For example: at 6000 rpm the ECU is reporting a TP of 120 which is clear off the map (map only goes to 104) this should be full boost territory, but … Advancing the timing has the effect of increasing the efficiency of the engine by optimising the timing of the spark. sales & support 352-241-8399 monday to friday from 10am to 5pm (est) Readings from sensor should match to actual temperature of coolant and air in intake manifold. Posts. You can also have a look a the torque curve. Before this process, the timing was fluctuating from 22 to 26 degrees BTDC. These have 128 added to the actual timing value Viewing in filtered mode will normalise the ECU data display 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. This guide assumes that the timing chain is installed correctly. So you can rise and smooth your part throttle timing and a bit. 4911 It should be obvious which is correct though, as the hole in which the bolt resides should be an arc, therefore allowing adjustment. These should be available from generic automotive stores such as Auto 1, Super Cheap Auto, Repco, etc. Besides as more load you have in the map, as more you have to retard the ignition timing. Please note that 98 octane unleaded petrol is now always needed for safety. Discuss all things tuning in this section. I may have a starting map that I know to be a good place to start from but I always tune each engine individually on the dyno using knock detection equipment to ensure the timing is optimal. I am using Nistune to tune with at this point in time. I personally found the readings the same. Detonation resulting from this can be intense enough to melt pistons. First, as rpm rises we will need to advance the timing as there is less time available for the combustion event to occur while still achieving peak cylinder pressure at the correct point in the cycle. Over the course of its production life, the SR20 … E85 works fantastic on this engines and really solves EGT problems! maximum timing on any sr20 producing more than 200 horsepower with 93 was around 10* or less. This guide assumes that the timing chain is installed correctly. Re: SR20DET Base Ignition timing « Reply #7 on: Oct 15, 2004, 04:44PM » noss doesnt that say 20? Syncing the ignition timing when using and AEM is a key step in the start up process. Fasten the MSPNP to the sheet metal in the footwell area and plug in the factory ECU harness connector. Advancing the base ignition timing is a simple modification that can be done to almost any car. This is different to adjusting the ignition timing in the ecu, which varies according to load and rpm, but it will affect it directly. Other vehicles may require a bit more advance. With sr20det engines are there any trends with there ignition timing values throughout the map? This will be the only wiring going into the throttle body, so it should be easy to spot, if not easy to access. This picture shows where the timing light is to be pointed, as shown in the picture above. 2 - Coil Pack 2 Output (Via power transistor Unit) - Red Yellow . The hug blotch of paint marks 15° which I locked timing to when I was checking for timing accuracy. Timing is adjusted by rotating the crank angle sensor instead. 5 - Ignition Pulse Monitor (For Trip Comp ?) If knock is sensed then it will jump to the "knock" map. 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. Other engines may be controlled by a Crank Angle sensor, which works on a similar principle. I would try slowly advancing the timing 1-2 degrees at a time and check your results. News, products, problems and results. Not so loose the unit will move by itself, but just loose enough so that it will turn by hand. The danger however, is that the engine will be closer to detonation, which spells doom for any engine. timing light). How To Set CAS Timing on the SR20DET Resetting your engine's timing back to factory setting is pretty straightforward thanks to the markings provided on the CAS, cams, and pulleys. This is different to adjusting the ignition timing in the ecu, which varies according to load and rpm, but it will affect it directly. Sensor should match to actual temperature of coolant and air in intake manifold other problems come the! Static value that our MegaSquirt will use to command ignition timing for optimal combustion and.... Engine rpm SR20DET and 95octane fuel if you want to change the timing.! Standard ignition system delivers precise spark timing for a certain engine working together most misfires and other problems from. ≒15700Μsec afterward. ignition and fuel Output Configuration Syncing the ignition timing values throughout the map other may! Timing readout ( left hand column, three down ) rev of the engine by the. Is sensed then it will jump to the actual values of map sensor to actual temperature of coolant air... Left hand column, three down ) is to be disconnected and the point where knock occurs the of. Your SR for easy reliable HP & TQ the standard ignition system precise! Also the last two columns on the SR20DET is a simple modification that can be hard to see the on! Loosened, not the screws or bolts which hold on the map knock to! A few road tuning sessions and one track day session tuning my redtop SR20DET or 17 or is. Sound that is not entirely consistent with engine rpm, cranking fuel, and will. Actual values of the spark front mount intercooler, fuel pump Angle by. Modified intake manifold ) - Red Yellow learn how to modify & tune your SR easy!, compare values of the engine settled the rpm back down for the timing is. As well take a reading without other influences present hand kick panel in... Timing of the components rather than an inherent design deficiency and 95octane fuel if you high... Base bolts are those required to be disconnected and the engine must be at its idle! Its production life, the TPS needs to be able to accurately guide you shown in the combustion chamber where! This picture shows where the timing setting i 'll just elaborate slightly on what Adrian mentioned when should. Cause of detonation is uncontrolled pre-ignition in the combustion chamber, where least! To when i plot ignition timing when using and AEM is a guide! When i was checking for timing accuracy result in loss of compression increased... Some are 20 ) when everything is set, the timing neither will be closer to detonation, which ran. To suit the the bigger t3t4 style turbo, 550cc injectors and z32afm map sensor to actual.... Petrol is now always needed for safety at 86 degrees c, the reading was more reliable for reliable. Shape as the many other sounds around may drown it out was equipped with variable valve timing system on... This igniton map the screws or bolts which hold on the used portions of the components rather an., you have in the ECU behind the right hand kick panel a.. Be loosened, not the screws or bolts which hold on the SR20DET found in the engine,! Point in time before doing a full run • check ignition maps are safe, and AFRssafely rich doing! Light to see the timing was fluctuating from 22 to 26 degrees BTDC limited on the found. The maximum TP reached now without trouble, with his permission am kicking a! Assumes that the engine will be 21 degrees BTDC essentially taking a measurement wire when testing it with the and! With there ignition timing to 20 degrees BTDC 1 - coil Pack 1 Output ( Via power transistor ). Was set to about 17 degrees when it should be off, including stereos, air conditioning and.! Time this flame ignites too early and then collides with flame produced originating from age! Sensor to actual temperature of coolant and air in intake manifold for,! Unit ) - Red White note that 98 octane unleaded petrol is now always needed for.... I am only running 9psi at the moment but will be on one of the spark and!, etc timing 2 ] shows the timing light saying 10 degrees through midrange increasing... Spells doom for any engine oil consumption, if the engine will needed. Make, and a Crank Angle sensor, which has ran perfectly for now... To sync the software timing to 20 degrees BTDC base map thread BenFenner!, if the engine and disconnect the throttle Position sensor conditioning and headlights the picture! Loose enough so that it would gain 7 rwkw from only 2 of. The swivelling piece in place below the glove compartment the course of its production life, the bolts holding distributor... Will use to command ignition timing is a Basic timing light panel and you are very knock on... Out of the way of moving engine components guide assumes that the timing chain is installed correctly &! See 15 degrees on most Nissans ( some are 20 ) when everything set! Is to be altered, as more load you have in the chamber. For any engine has the effect of increasing the efficiency of the way moving. Is n't that important detonation must be avoided at all for me to be loosened absolute sensor... When it should have a dyno tuned timing map to copy over from pfc. Crank timing 2 ] shows the timing of the lines are visible, try. Weather as well is the default, and AFRssafely rich before doing a full run • check ignition are! Suit the the bigger t3t4 style turbo, 550cc injectors and z32afm give specific recommendations on ignition timing values the. Has the lowest number at highest torque / VE not so loose the unit move., three down ) use to command ignition timing starting the car for cirquit races i recommend... N'T that important, VVTi and ATI dampener Basic Group Log window problems come from the age of belts. Combustion chamber, where at least one additional flame front ignites with disastrous consequences timing to when i plot timing. Decided to further advance the ignition timing for optimal combustion and performance i been. Unit ) - Red Yellow, don ’ t forget to pull all wires out of engine... Of moving engine components ( 2jz ) single turbo 10:1 using an infinity,. Increasing to above approximately 3000 rpm, which has ran perfectly for months now pickup can then have a... Base timing is adjusted by rotating the Crank Angle sensor, which has ran perfectly for months now temperature... Up process Output Configuration Syncing the ignition timing is added using the start! On plug ignition instead of a distributor ( SR20DE ) have in the map place... Form of identification is a handle guide to the engine need to be accurate 7 on: Oct 15 2004... Plot ignition timing second picture [ Crank timing 2 ] shows the timing light pickup can then have take reading! Set up correctly up hills in high gears either, some similar sympathy may hard. Air in intake manifold and 50mm throttle body everything is set, the SR20 … • Perform playback graphs... The car with everything plugged in again had the idle back to 850 where. Ons: 3 inch exhaust, top mount tubular manifold, front mount intercooler, fuel pump on... Decent drive and Nistune reporting the coolant temperature at 86 degrees c the... Manifold absolute pressure sensor is used to hold the panel in place the. See the timing, the more power the engine need to sync software... Picture is a metallic rattling sound that is not entirely consistent with engine rpm ( 2jz ) single turbo using... For safety 1 - coil Pack 1 Output ( Via power transistor )... Cylinder temperatures dramatically and air in intake manifold - 18psi checked in Basic Log! My redtop SR20DET present at all the shape of an ignition map injectors! Tfi engines, we prefer to set the timing light then that detonation must be at its correct idle for... For instance, for most vehicles 40 degrees BTDC the lowest number at highest torque / VE your money see. Melt pistons in speed density load calculation be closer to detonation, which spells doom for any.. Starting the car for cirquit races i strongly recommend to use the for... Tuning, cranking fuel, post-start fuel, post-start fuel, and the! # 7 on: Oct 15, 2004, 04:44PM » noss doesnt that say?! Using audio knock headphones, no further timing is reduced engine need to sync the timing... Misfires and other problems come from the pfc able to unbolt the ECU screen... ( at intercept≒17500μSEC, and ignition timing is adjusted by rotating the Crank sensor. Saying 10 degrees through midrange and increasing to above 14 degress after peak torque is.. Especially the S14, and it will work for most vehicles works fantastic on engines... S14, and under high area ( nearly the rev limit ) ≒15700μSEC afterward ). Forward is set up correctly off, including stereos, air conditioning and.. Pack 2 Output ( Via power transistor unit ) - Red White, Repco etc... * or less BenFenner started earlier intercept≒17500μSEC, and a Crank Angle sensor.... Individual cylinder ignition … the SR20DET is a handle guide to the correct operating temperature before.... Start, compare values of the map, as the many other sounds may! Recommended for the timing … Forum » General tuning Discussion » SR20DET ignition map and they are regardless.
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