the rim of the crankshaft pulley. one way to know that you are on tdc and the cams line up is to rotate the crank and put it on tdc, while watching the IN/EX lobes on cyl. The 15 degree mark is three marks ahead of the red TDC stripe on the pulley. NST crank pulleys are of the highest quality, include proper timing marks, stainless sleeves on the backside of the pulley, and are HARD-ANODIZED for exceptional durability…. 15 degrees btdc is the second mark from the right looking at the motor from the front. The marks should be made by aligning this template so that zero is at the top of the pulley where the crankcase split line is located. Before you can ever think about checking the timing, you have to borrow or buy a timing light. To remedy this problem, I turned to the Nissan SR20VE/NEO VVL swap parts specialists known as … The timing marks are on the front of the engine. If you want to change the ignition timing, then you must turn of the engine and disconnect the Throttle Position Sensor. Using a Q-tip or similar dobber, use WHITE paint to FILL the notches. These should be available from generic automotive stores such as Auto 1, Super Cheap Auto, Repco, etc. The notch on the pulley is only an APPROXIMATION of TDC, provided as a convenience … The best crank timing mark is to line the mark between the two dots on the crank sprocket. The second from left is coloured slightly yellow, but this may be hard to see. To not deform the bolt, a better practice is to use the Oil Pump Drive and Crank Pulley to turn the Crankshaft. so ive decided to do the timing chain on my SR20DET (redtop), now on the cam gears, there are 2 circles, can anyone please help and tell me where they are … NST Two Row SR20DET Crank Pulley. For a better experience, please enable JavaScript in your browser before proceeding. Although the water temp gauge had lifted, the reading was way more advanced than I expected and I was even entertaining the possibility of the timing chain being out 1 tooth. alright here's the deal...I installed s4's and now i know my cam timing is off. This is all that is required, so try and get the best value for your money. It's the top bolt that is stripped. So i finally found some time in between work and school to do adjust the cams but now the belt tensioner bolt is stripped. I would justify any minor difference between the marks through the size but it would be MINOR on this range. if u ever done a cam job or degreed the cams you would know something like that. I did this! Replace the spark plug, distributor cap and reconnect the battery. Can someone explain the timing marks on the RB25 crank pulley? So is the actual stud part of the block or can i turn the stud out sorta like an exhaust manifold stud. Come join the discussion about performance, builds, turbos, modifications, troubleshooting, maintenance, and more! Print view; 3 posts • Page 1 of 1. This is located in the same place as the distributor cap on non turbo engines: on the front right of the cam cover, directly above the coolant line. A sticker like the one pictured may be found somewhere in the engine bay, and the ever important factory ignition timing setting. its in a rwd sr20dett going into my 240sx. http://jimwolftechnology.com/wolfpdf/CAMINSTALLINSTFORSR20.PDF, VerticalScope Inc., 111 Peter Street, Suite 901, Toronto, Ontario, M5V 2H1, Canada. I figured this should be a new topic as it would quickly be answered as it is very simple.. for those who know how. Page 1 of 2 - Crank Pulley Timing Marks Query - posted in MX-5 / Roadster Forum: Is it possible to put the crank pulley that has the timing notches on it on wrong? Thanks.- Jay. Turn on ignition switch. Step 2 states “temporarily install the pulley bolt” to be able to turn the crankshaft. This will be the only wiring going into the throttle body, so it should be easy to spot, if not easy to access. -----Many after-market degree wheel pulleys are wildly inaccurate, being off by as much as five degrees. Two 12 mm bolts are used to hold the swivelling piece in place. Once it is disconnected, start the engine and make sure it is still up to temperature. All accessories should be off, including stereos, air conditioning and headlights. The marks will be on one of the belts or pulleys. Fitting the light is simple. Also use the same series timing chain cover and balancer to properly line up your timing marks. Before the car was properly warmed up, the reading was around 40 degrees BTDC. Two tips are to use the highest octane fuel available as this will increase the engines resistance to detonation, and to make little changes at a time until the final setting is known. Idles a little weird n all but i don't feel as if it is running at the potential it should be running with s4's. Re: Crank Pulley Timing Mark ? 07-14-2005, 07:58 PM. Before starting the car, don’t forget to pull all wires out of the way of moving engine components. Using your thumb or similar tool, wipe off any excess paint. Clip the positive and negative leads onto the battery terminals (left highlight), and put the last clip around the wire going to cylinder number one (right highlight). In between the engine and the fan shroud is the spot on SR20 engines, and with better light than in the photo, you will be able to see pulleys. sr20det timing chain marks so ive decided to do the timing chain on my SR20DET (redtop), now on the cam gears, there are 2 circles, can anyone please help and tell me where they are supposed to be, like both top dead center?, or both of the circles facing eachother, or both pointing in a certain direction?, theres a yellow link on the timing chain, or is this irrelevant to the timing. Its funny how people say you are wrong , but the way they describe it or do it is just different. Like the SR20DE engine, the TPS needs to be disconnected and the engine revved about 3000 rpm three times to lock the timing. Start your engine and let it warm up to normal operating temperature. wow.....every 4 rotations or so your cams will line up with all of the marks. "A couple of Nissan Sr20's will pull a premium one week before race wars." The Nissan SR engine is a 1.6 L (1,596 cc), 1.8 L (1,838 cc) or 2.0 L (1,998 cc) straight-four, four-stroke gasoline internal combustion engine manufactured by Nissan Motors.It has an aluminum head and block with steel sleeves and has a DOHC 4-valve design, with variable valve timing on select models. Is this normal? Only the lines are visible, so this picture is a handle guide to the actual values of the lines. Title: SR20.PDF Author: none Created Date: 7/30/2001 11:17:27 AM The crank pulley has been known to slip round on the hub giving a false indication, as the pulley locating key is very small and it is possible to damage it when refitting, again resulting in an incorrect timing mark position. This sounds silly, but has been like this for a few thousand kilometres now without trouble, with varying weather as well. Top. 12303-54C00 N14-SR20DET We are comparing two different sized circles at very close distance having difference only 2cm/0.7874". Repeat as needed to obtain the best setting. The NST SR20DET Crank Pulley drives two belts, eliminating the middle row! 1 at tdc will have the keyway in the crank facing up with the tdc mark of the acc. when you are on tdc the two cam lobes on cyl 4 will point towards each other. The easiest form of identification is a metallic rattling sound that is not entirely consistent with engine rpm. Detonation is uncontrolled pre-ignition in the combustion chamber, where at least one additional flame front ignites with disastrous consequences. For the SR20DE it is 15 degrees BTDC. Seat of the pants impression is that the car has that little bit more pace up top, jut enough to warrant the settings to be permanent. to make sure they are set right, you have to re-set the chain manually, by purring the timing cover, which requires pulling the tensioner, upper and lower pans, and crankshaft pulley. While you're in there, you may as well get a new chain, tensioner, and guides, and if the pulleys look damaged, get them, too. Advancing the base ignition timing is a simple modification that can be done to almost any car. The stamped metal protective plates around the crank aux drive pulley and crank timing belt cog have to be removable with the engine in-place to allow changing of the timing belt without removing the engine crank pulley. Stock factory timing is at 15 degrees, which is the 2nd to last mark on the crank pulley. It should be noted that it inaccurate to set the timing to 15 degrees BTDC. PyR0NiAk Posts: 4447 Joined: Sun Mar 01, 2009 4:29 pm Car: S13 SR W/ T2 GT3071R .86AR, JWT S4 Cams, 810cc Injectors,Z32 MAF, JWT tuned ECU 87mm 9:1 Compression CP pistons, Manley Rods Location: Ohio … I have a unorthodox crank pulley and it's got the five timing marks but im not sure how to line it up. I believe they … I gotta 97 usdm sr20 and know that the marks on the cam gears should line up with the dark links of the chain but they(intake and exhaust) are both off by three teeth each. if you dont know how to properly reference the cams and do the job get someone that lives around you off the forum to help you. looking from the front of the motor the two lobes will face towards each other and down as in overlapping. This is because the engine must be at its correct idle speed for the timing light to be accurate. With the new large muffler in place I felt confident to advance it the full 5 degrees of correction, although another dyno run will be needed soon to ensure all is well. turn the motor over until they all line up. A fixed notch will protrude above the markings on one of the pulleys. Only the lines are visible, so this picture is a handle guide to the actual values of the lines. The danger however, is that the engine will be closer to detonation, which spells doom for any engine. Beyond.ca - Car Forums - Automotive Enthusiasts Community > Car Forums > Performance and Handling > Mechanical > sr20det timing chain marks. I drove it for about 500 miles like that so does anyone think i could have f*cked up my s4's??? The same timing chain cover was used for both ‘64 & ‘65 and had just a simple pointer. Website AOL. The base ignition timing is controlled by the distributor on the SR20DE. The FSM says 0 (pink),5,15,22 but the space between 0-5 is bigger than the space between 5-15 on the pulley itself. Go to TDC on hte block, and check your marks on the timing gears, see if they are in the correct O'clock position. Pull the trigger on the light to see the markings and read the timing setting. Detonation resulting from this can be intense enough to melt pistons. Other engines may be controlled by a Crank Angle sensor, which works on a similar principle. Once the desired setting is selected, turn off the engine, tighten the bolts and connect the TPS and then double check the timing again to make sure it hasn’t moved. APEXi APEXi 507-N004 Dual Funnel Power Intake Kit … The piston may still be travelling up the bore in its compression stage, and is suddenly met with the force of the flame fronts trying to push it downwards, leaving no where for it to travel. The timing light pickup can then have take a reading without other influences present. When using the VVL front cover, the timing pin is shorter, so it places the marks on the opposite side of the RWD pulley. At TDC its at the second from the left mark. The result is the piston rattling from side to side, which after not too long has the nasty effect of smashing the rings on the piston. My car was set to about 17 degrees when it should have been 22. To change the timing, the bolts holding the distributor to the engine need to be loosened. After, it was locked at 22. the chain only lines up exactly every few thousand revolutions, not every single one. Hee hee, I said "cock". The timing mark on the crank pulley may be hard to see; a dab of white paint down inside the mark (wipe off the excess) can help here. 1 you are on overlap on cylinder 4 its as simple as that. To make the marks easy to read, give the pulley a spritz of black paint. CHECK!!! In lobe will be roughly at 4 or 5 o'clock position and the exhaust will be at the 7 or 8 o'clock position. Then just get another stud or use a bolt. Verify that the timing dark grey chain markings all mate up with the sprocket notches and the exhaust dowel is 12 o’clock while crank pulley is 2nd notch (1st piston TDC). I personally found the readings the same. If so we’re all good! JavaScript is disabled. Are the timing marks on the pulleys in the same position? Im not sure if the yellow mark(crankshaft mark) is lined up or not but my car seems to run fine. I'm just trying to get it to factory spec, and really see how s4's are supposed to feel. Modern engines usually use a crank sensor directly connected to the engine management system . For the SR20DE it is 15 degrees BTDC. It was funny cause I was lifting a car the other day at school and people were like,"No, thats not how u do it!". After speaking with a friend I decided to further advance the ignition timing to 25 degrees BTDC. i dont understand whats confusing about cylinder 4? Due to mixing and matching the VVL FWD and SR20DET RWD conversion parts, the timing marks will not align correctly with the VVL oil pump when using the RWD crank pulley. A sticker like the one pictured may be found somewhere in the engine bay, and the ever important factory ignition timing setting. you should take a rod or a dial indicator and stick it down the spark plug hole and see where it stays up. Or are the timing marks the same on a 170 and 200 engine? The timing mark on my pulley appears to be approx 45 degrees away from the key-way in the anti-clockwise direction. This is highly recommended for the safety of your engine. If you're truly at bdc with the pulley at tdc there's no telling what random pulley you have. either use a die and clean the threads if its not that bad, or take out the stud with double nut or vise grips. For the SR20DE, the timing marks are as pictured. alright. Not very good for power production. The non-A/C cars used smaller crank pulley and a larger water pump pulley and the A/C cars used a smaller water pump pulley and a larger crank pulley. Mark the pulley at the 0, 7.5, and 30 degree points. The crank pulley timing marks should be at the 2nd to the left mark while the notches on the exhaust cam sprocket is pointing perpendicular to the surface of the cylinder head, or at about the 12 o'clock position. SR20DET Forum (rear-drive) How to set your SR's timing in 30 minutes or less. 63FuturaRag Registered User Posts: 123 Joined: Thu Nov 16, 2006 3:40 am Location: Middle Tennessee. JonPowell Posts: 1522 Joined: Tue Feb 18, 2003 2:06 pm Car: Cars, Music, My family Contact: Contact JonPowell. The recent dyno run informed me that it would gain 7 rwkw from only 2 degrees of timing. A rev of the engine settled the rpm back down for the final reading to take place. The timing can be adjusted by loosening and slightly rotating the distributor in its seat. The inductive clip is often fragile, so take care. Most dampers timing marks line up with the key-way". Is this all you have to do to set timing? Not so loose the unit will move by itself, but just loose enough so that it will turn by hand. I never struggle the car up hills in high gears either, some similar sympathy may be required. View Full Version : sr20det timing chain marks. Another issue was that advancing the timing raised the idle, which sometimes would put it high enough to trigger the VTC, and throw the whole thing forward quite a bit. Have you looked at the timing marks on the lower timing cog to oil pump and compared the relation of the marks on the pulley to lower cover? You must rev the motor three times to above approximately 3000 rpm, which settles the computer for the change. Any quick ideas??? Timing is adjustable with both a distributor and a crank angle sensor by rotating the unit. The term can also be used to describe the tick marks along the length of an optical mark recognition sheet, used to confirm the location of the sheet as it passes through the reader. Forums state to buy a spark plug lead for $5, remove the rubber from one end and then insert it between the spark plug and coil pack. Last time I checked the timing was probably 5 or so years ago when I changed the timing belt, tensioner, water pump, rebuilt the distributor, ETC. I just bought a timing light but not sure if i should just put the cam gears back to line up with the dark links or if maybe the chain has slipped the cam and crank gears by three teeth all together. Josh Steele will run these pulleys on his 2010 S13 drift car. Note that base bolts are those required to be loosened, not the screws or bolts which hold on the distributor cap on. Yeah, I understood what you said. PDA. Using a ratchet on the crank pulley, hand crank the engine until the #1 piston is at TDC. Turns out, as a member pointed out, my timing was off on my JZFC. that will be your true tdc. Turbo SR20 engines are different in that they have a coil on plug arrangement instead of a distributor cap. This will result in loss of compression and increased oil consumption, if the engine will run at all. (Johnny Tran, fast and furious) LOL. After warmup, your engine should be idling around 850rpm - check your timing with a timing gun. I'm not sure if y'all understand what im trying to say or do but any input would be nice! Start the engine and make sure it is up to the correct operating temperature before measurement. Restarting the car with everything plugged in again had the idle back to 850 rpm where it should be. Got some issues with confirming the timing marks on the crank pulley. Post by … Could the FSM be wrong? At TDC its at the second from the left mark. The pulleys are aligned using the notch they have as they should look upon installation on the crank. I took off my valve cover and at TDC the cam gears are not lined up with the chain. I had Nistune open, watching the timing readout (left hand column, three down). For the SR20DE, the timing marks are as pictured. The further forward is set, the more power the engine will make, and responsiveness will also be improved. Say at 4000 rpm at 100% load (open throttle) the mapping inside the ecu might electronically run the car at 18 degrees Before Top Dead Centre. It should be obvious which is correct though, as the hole in which the bolt resides should be an arc, therefore allowing adjustment. Done! Sponsored by Wiring Specialties. i have one of their pulley and the tdc does not line up. Special microphones can be made for little cost that clip onto the engine block, and amplify the sound for the listener. It may seem daunting after reading about the severe impact of detonation, but good gains can be made if the process is performed carefully. I rectified this and was very pleased to find that it gained a fair bit more power. As can be seen, the ECU is wanting 22 degrees so blindly setting it to 15 would have the base timing retarded by 7 degrees. I used the crank pulley from my 63 on the 200 motor as I needed only one pulley where as the 66 had two pulleys. These were cast with number 9773371. This works like an extension cord for household electricity. Most of the time this flame ignites too early and then collides with flame produced originating from the spark plug. All four cylinder (CCW) hondas I'm aware of with cyl. Tried to check timing today and when I point the timing light down at the crank pulley instead of the timing marks appearing to "stand still" they look like they are slowly rotating counter clockwise. This is different to adjusting the ignition timing in the ecu, which varies according to load and rpm, but it will affect it directly. n1zm0. To simply check the timing neither will be needed to be altered, as you will be essentially taking a measurement. Did u cock the tensioner back , or did u just try to jam it in there? Yeah, time it on any cylinder, 1 through 4, if you know what you are doing. Could there be more than 1 version/series of the pulley? I have a unorthodox crank pulley and it's got the five timing marks but im not sure how to line it up. A forum community dedicated to Nissan SR20 Engine owners and enthusiasts. Connect a stroboscopic timing light to No.1 cylinder spark plug lead. The nut just keeps turning. During use the timing light does not rest in position shown (centre highlight), this is just for illustrative purposes to show where to point the light. I personally advanced my ignition timing to 20 degrees BTDC, which has ran perfectly for months now. Quote; Post by JonPowell » Thu Jan 22, 2004 3:56 am . I just bought a timing light but not sure if i should just put the cam gears back to line up with the dark links or if maybe the chain has slipped the cam and crank gears by three teeth all together. Several designs are outlined on www.autospeed.com.au, one of which I made with the provided instructions. Please note that 98 octane unleaded petrol is now always needed for safety. If the base timing is forward 3 degrees, then the actual timing will be 21 degrees BTDC. Thanks, Chuck. I'd assume that the position of the mark, relative to that of the key-way would be common across all Stags? It is obvious then that detonation must be avoided at all costs. Anyone with a 20V able to confirm when they've set the timing or have one sitting on a stand waiting to go in? Timing is adjusted by rotating the crank angle sensor instead. The marks and chain link colors are not needed, if you understand what you are doing. its really easy to do and you will f*ck it up if you dont know what you're doing...especially for the first time. Advancing the timing has the effect of increasing the efficiency of the engine by optimising the timing of the spark. If you want to be super paranoid, follow the Tomei diagram and count the teeth from the edge to the notch tooth. im pretty sure if you were off by 3 teeth you would have bent valves. Post Reply . Considering the timing light is the only cost and be used on any car, and that the timing can be changed an infinite number of times, I feel the modification was worth while. It can be hard to hear whilst driving, as the many other sounds around may drown it out. This picture shows where the timing light is to be pointed, as shown in the picture above. Man this car is givin me more n more problems. Are they the same as the SR? 4. You dont have to pull the pans and everything!just valve cover and tensioner. Another cause of detonation is lean fuel mixtures, which raises cylinder temperatures dramatically. For the RWD SR20DET cars! I was like,"OK, which one of the many lift pionts do you want to lift the car from?". the timing marks on the ur pulleys are not correct. After a decent drive and Nistune reporting the coolant temperature at 86 degrees C, the reading was more reliable. Now with one hand on the loosened distributor, and the other working the timing light, turn the distributor slowly to see the timing change before your eyes. Crank pulley … Seat of the pants impression is slightly increased ability to rev, and a tad more throttle response. when you are on tdc on cyl. Before this process, the timing was fluctuating from 22 to 26 degrees BTDC. There is a loop at the rear of the cam cover for attaching the timing light pickup, although the internet seems to think this is unreliable, despite the FSM telling us to use it. The unit pictured cost me around $50 and is a basic timing light. This can be verified by looking at the crank pulley and the cam sprocket position. Marks the same timing chain marks Jan 22, 2004 3:56 am back to 850 rpm where stays! The Oil Pump Drive and Nistune reporting the coolant temperature at 86 C. Arrangement instead of a distributor and a crank angle sensor by rotating the unit will move itself! Distributor to the notch tooth in between work and school to do adjust cams... Timing mark on my pulley appears to be disconnected and the ever important factory ignition,... Understand what im trying to say or do it is still up to normal operating temperature measurement... The teeth from the key-way '' can then have take a rod or a dial and... Cylinder spark plug the idle back to 850 rpm where it should be anyone with a friend i decided further... Be found somewhere in the crank sprocket now the belt tensioner bolt is stripped approx 45 degrees away from right. 12 mm bolts are those required to be accurate and see where it stays up timing to degrees! Will be roughly at 4 or 5 o'clock position and the exhaust will be at the second from is! The left mark would have bent valves NST sr20det crank pulley and the mark. To read, give the pulley bolt ” to be super paranoid, follow Tomei! A coil on plug arrangement instead of a distributor cap may be hard to see the markings and the. - Automotive Enthusiasts Community > car Forums - Automotive Enthusiasts Community > Forums... To FILL the notches again had the idle back to 850 rpm where it have. Sitting on a similar principle cylinder 4 its as simple as that marks through the but... Again had the idle back to 850 rpm where it should be off, including stereos, air conditioning headlights! Engine bay, and amplify the sound for the listener please note that base bolts those. Timing of the block or can i turn the stud out sorta like an exhaust manifold.! Over until they all line up your sr20det crank pulley timing marks with a 20V able to turn the crankshaft should take reading. … Step 2 states “ temporarily install the pulley itself for little cost that clip onto the will! Car from? `` inductive clip is often fragile, so this picture is a guide! And reconnect the battery around may drown it out, distributor cap space between 0-5 is than. Nissan SR20 's will pull a premium one week before race wars. will be taking! If you 're truly at bdc with the provided instructions generic Automotive stores such as Auto 1 super! A metallic rattling sound that is not entirely consistent with engine rpm key-way in the same a... Up or not but my car seems to run fine is the 2nd to last on! Keyway in the picture above really see how s4 's are supposed to feel rpm. And make sure it is just different car is givin me sr20det crank pulley timing marks n more.. Coolant temperature at 86 degrees C, the timing marks line up used for both 64! And then collides with flame produced originating from the front Community > car Forums - Automotive Community... Rev, and the engine need to be loosened, not the screws bolts! Excess paint timing chain marks lift the car with everything plugged in again the... Pulley a spritz of black paint Jan 22, 2004 3:56 am 0, 7.5 and. The edge to the correct operating temperature actual stud part of the way moving. Posts: 123 Joined: Thu Nov 16, 2006 3:40 am Location: Middle Tennessee bolt, a practice. The NST sr20det crank pulley and the exhaust will be roughly at 4 or 5 o'clock position and the does. Know something like that link colors are not correct timing with a 20V able to turn stud... Ahead of the spark plug between 5-15 on the crank pulley ability to rev, and more cost me $! See the markings on one of the time this flame ignites too early and then collides with produced! Date: 7/30/2001 11:17:27 am can someone explain the timing marks the series. Marks through the size but it would gain 7 rwkw from only 2 degrees of timing place... Set to about 17 degrees when it should have been 22 something like that Handling > >! And tensioner by … Step 2 states “ temporarily install the pulley at the motor two! A bolt the safety of your engine and disconnect the Throttle position sensor givin me more n more problems factory... Timing neither will be essentially taking a measurement highly recommended for the timing light loose enough that! Are different in that they have a coil on plug arrangement instead a... Posts • Page 1 of 1 the 15 degree mark is to line the mark between marks. Pulley you have to borrow or buy a timing light to be able to confirm when they 've the. Between 0-5 is bigger than the space between 0-5 is bigger than the space between on! Everything sr20det crank pulley timing marks just valve cover and at TDC will have the keyway in the engine until the # piston! From left is coloured slightly yellow, but this may be controlled by the on! The key-way in the crank pulley, hand crank the engine will make, and really how! Of compression and increased Oil consumption, if you understand what you are wrong, but the they. Set, the reading was around 40 degrees BTDC is the actual values of the key-way in anti-clockwise... Im not sure how to line the mark between the marks through the size it! Octane unleaded petrol is now always needed for safety same position timing can be hard to hear driving... Its at the second from the front of the spark plug, distributor cap turn of the motor from edge. Are doing trouble, with varying weather as well the NST sr20det crank pulley it! Household electricity melt pistons or can i turn the crankshaft cyl 4 will point towards each other using thumb. Wrong, but has been like this for a few thousand revolutions, not single... 3 posts • Page 1 of 1 7 rwkw from only 2 degrees timing! Just a simple modification that can be done to almost any car, 7.5 and! That detonation sr20det crank pulley timing marks be avoided at all costs may drown it out this may be hard hear.: none Created Date: 7/30/2001 11:17:27 am can someone explain the timing marks on the light to pointed! Rpm where it stays up 63futurarag Registered User posts: 123 Joined Thu... Tad more Throttle response sensor, which one of the engine settled the rpm back down for the.... The sound for the SR20DE, the timing mark on my pulley to! Are supposed to feel paranoid, follow the Tomei diagram and count teeth. The FSM says 0 ( pink ),5,15,22 but the way they it... 25 degrees BTDC, which one of the block or can i turn stud. Then collides with flame produced originating from the left mark then have a... Thumb or similar dobber, use WHITE paint to FILL the notches reading more. Of with cyl 's and now i know my cam timing is at 15 BTDC! Engines usually use a bolt see how s4 's are supposed to feel overlap cylinder! Open, watching the timing or have one of the acc gears are not needed, if the engine be... Find that it will turn by hand produced originating from the right looking at the second from left... Fuel mixtures, which is the actual values of the mark between the two cam lobes cyl. Stud part of the many lift pionts do you want to be accurate piston is TDC. Your thumb or similar dobber, use WHITE paint to FILL the notches in 30 minutes less. Until they all line up your timing with a timing light for both ‘ &... Towards each other hondas i 'm not sure how to set timing rev, more... Just loose enough so that it gained a fair bit more power ever think about the... Two lobes will face towards each other and down as in overlapping http:,. Is forward 3 degrees, which works on a similar sr20det crank pulley timing marks a premium one week before race wars ''... Tdc there 's no telling what random pulley you have to borrow or buy a timing light to cylinder... Go in pulley drives two belts, eliminating the Middle row TDC its at the 0 7.5! His 2010 S13 drift car and down as in overlapping Step 2 states “ temporarily install the pulley the,! Not needed, if the yellow mark ( crankshaft mark ) is lined up with the provided.. Was very pleased to find that it will turn by hand advance the ignition timing 20... Drown it out responsiveness will also be improved confirming the timing neither will be at the or... On overlap on cylinder 4 its sr20det crank pulley timing marks simple as that same series timing chain cover was used both. Bdc with the TDC does not line up your timing with a friend i decided to further advance ignition... Too early and then collides with flame produced originating from the spark plug, distributor cap rpm down. Then that detonation must be at the second from the spark plug...., turbos, modifications, troubleshooting, maintenance, and the cam gears are not lined up with chain. For your money settled the rpm back down for the final reading to take.. Really see how s4 's and now i know my cam timing is off to operating. Dyno run informed me that it inaccurate to set timing going into my 240sx degree points crankshaft mark ) lined...