how high have you modified your car to rev?
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Originally Posted by hotrodcivic2004
i know for a fact that mine has gone over 7000 and ventured into the 7200 mark..i've seen it with my own eyes..
Originally Posted by _Viper_
I love hearing the Vtec engage when I rev my engine....Its like im boosted...
Vtec and Turbo are about the same in my book....
Vtec and Turbo are about the same in my book....
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Originally Posted by aznboysrfr
you must have some magical vtec that nobody else can hear ... can you FEEL it too?
oh, s2kman ... this is exactly the quote I was looking for, but I couldn't find it ... it's out of the K series FAQ ...
Originally Posted by Hondata
I heard Hondata increases the rev limiter. Is that safe?
Hondata says: "The JDM J20A has a 8600 rpm limiter, whilst the US K20A2 with the same internal parts has a 8100 rpm limiter, so we are comfortable increasing the rev limiter to 8600 or 8800 rpm. One important point is that hitting the rev limit places a lot of stress on the engine, no matter where the limiter is. It is better to rev to 8500 rpm than hit the limiter at 8100 rpm. Also do not hold the engine on the rev limiter if you miss a gear - I've seen more than one engine expire this way. Another factor with the rev limiter is that the early K20A & K20A2 engines had weaker dual intake valve springs. Honda upgraded these some time in 2002 to a single valve spring (supposedly from the S2000). Owners of the earlier engines should consider changing the valve springs if they race the car. You'll lose a little power doing this. Connecting rods are a point of debate at the moment. We know they can fail at 9500 rpm, so setting the rev limit below 9000 rpm seems like a good idea.
Hondata says: "The JDM J20A has a 8600 rpm limiter, whilst the US K20A2 with the same internal parts has a 8100 rpm limiter, so we are comfortable increasing the rev limiter to 8600 or 8800 rpm. One important point is that hitting the rev limit places a lot of stress on the engine, no matter where the limiter is. It is better to rev to 8500 rpm than hit the limiter at 8100 rpm. Also do not hold the engine on the rev limiter if you miss a gear - I've seen more than one engine expire this way. Another factor with the rev limiter is that the early K20A & K20A2 engines had weaker dual intake valve springs. Honda upgraded these some time in 2002 to a single valve spring (supposedly from the S2000). Owners of the earlier engines should consider changing the valve springs if they race the car. You'll lose a little power doing this. Connecting rods are a point of debate at the moment. We know they can fail at 9500 rpm, so setting the rev limit below 9000 rpm seems like a good idea.
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Originally Posted by _Viper_
Ask S2000 He knoes my Vtec is special...I changed the selenoid that engages the vtec.and now its really crazy I burn through my front tires every month...
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Originally Posted by aznboysrfr
oh, s2kman ... this is exactly the quote I was looking for, but I couldn't find it ... it's out of the K series FAQ ...
notice this part?
Originally Posted by Hondata
I heard Hondata increases the rev limiter. Is that safe?
Hondata says: "The JDM J20A has a 8600 rpm limiter, whilst the US K20A2 with the same internal parts has a 8100 rpm limiter, so we are comfortable increasing the rev limiter to 8600 or 8800 rpm. One important point is that hitting the rev limit places a lot of stress on the engine, no matter where the limiter is. It is better to rev to 8500 rpm than hit the limiter at 8100 rpm. Also do not hold the engine on the rev limiter if you miss a gear - I've seen more than one engine expire this way. Another factor with the rev limiter is that the early K20A & K20A2 engines had weaker dual intake valve springs. Honda upgraded these some time in 2002 to a single valve spring (supposedly from the S2000). Owners of the earlier engines should consider changing the valve springs if they race the car. You'll lose a little power doing this. Connecting rods are a point of debate at the moment. We know they can fail at 9500 rpm, so setting the rev limit below 9000 rpm seems like a good idea.
Hondata says: "The JDM J20A has a 8600 rpm limiter, whilst the US K20A2 with the same internal parts has a 8100 rpm limiter, so we are comfortable increasing the rev limiter to 8600 or 8800 rpm. One important point is that hitting the rev limit places a lot of stress on the engine, no matter where the limiter is. It is better to rev to 8500 rpm than hit the limiter at 8100 rpm. Also do not hold the engine on the rev limiter if you miss a gear - I've seen more than one engine expire this way. Another factor with the rev limiter is that the early K20A & K20A2 engines had weaker dual intake valve springs. Honda upgraded these some time in 2002 to a single valve spring (supposedly from the S2000). Owners of the earlier engines should consider changing the valve springs if they race the car. You'll lose a little power doing this. Connecting rods are a point of debate at the moment. We know they can fail at 9500 rpm, so setting the rev limit below 9000 rpm seems like a good idea.
^ I know that hitting fuel cutoff is a lot of stress on the engine ... I never debated that part. in one of my earlier posts, I was saying that hitting the limiter was worse for the engine than hitting 9000 rpms (in this case, I misquoted and is actually 8500).
I also went back and briefly skimmed through the s2ki.com thread and the stresses on the rods of bringing it to 8600 is gonna be GREATLY less on a 2.0L engine than bringing the car to 9000 rpms on a 2.2L engine, which was the argument on the s2ki.com ... with that being said, I don't see a problem with bringing the K20a2 to 8600 rpms, nor even 9000 rpms since the displacement and stroke is much smaller than the F22c
I also went back and briefly skimmed through the s2ki.com thread and the stresses on the rods of bringing it to 8600 is gonna be GREATLY less on a 2.0L engine than bringing the car to 9000 rpms on a 2.2L engine, which was the argument on the s2ki.com ... with that being said, I don't see a problem with bringing the K20a2 to 8600 rpms, nor even 9000 rpms since the displacement and stroke is much smaller than the F22c
I hit the limiter all of the time especially when it is wet out in 2nd because my shitty snow tires seem to slip the slightest bit around 6.5K in 2nd and then the revs jump into the redline. Ask hotrod he was with me when I did it once (i think maybe twice). I don't know that it is bad on the engine it just sounds shitty.
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it says.. Jet Re-programmed ECU (7900rpm redline)
it says.. Jet Re-programmed ECU (7900rpm redline)
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Rep Power: 374 aight someone get on there d17a2 and see where the fuel cut off happens using the stock tach and the vafc....end that debate please.....
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Originally Posted by S2000man01
i wonder how often he did that? did he ever dyno it? did he ever prove he ran it to 7900?
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Originally Posted by blouisgod
aight someone get on there d17a2 and see where the fuel cut off happens using the stock tach and the vafc....end that debate please.....
this was done in second gear. floored it all the way to the "fuel cut"
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Rep Power: 400 lol sorry let me explain then.
redline is the recommened shift point for your engine's safe operating rpm.
rev LIMITER is usually a couple hundred rpm above redline as a final fail-safe should you not shift at the redline. it prevents your car from actually going into an unsafe operating rpm.
redline is the recommened shift point for your engine's safe operating rpm.
rev LIMITER is usually a couple hundred rpm above redline as a final fail-safe should you not shift at the redline. it prevents your car from actually going into an unsafe operating rpm.
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Rep Power: 0 ive downshifted into 3rd at about 95 mph and it went to 8000rpms. nothing much happened. that was 20000 miles ago and the car is fine. other than that i can get it to rev to about 7000-7100 before the limiter kicks in.
Last edited by ASWZero; Feb 26, 2005 at 02:39 AM.
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Originally Posted by S2000man01
lol sorry let me explain then.
redline is the recommened shift point for your engine's safe operating rpm.
rev LIMITER is usually a couple hundred rpm above redline as a final fail-safe should you not shift at the redline. it prevents your car from actually going into an unsafe operating rpm.
redline is the recommened shift point for your engine's safe operating rpm.
rev LIMITER is usually a couple hundred rpm above redline as a final fail-safe should you not shift at the redline. it prevents your car from actually going into an unsafe operating rpm.
Originally Posted by S2000man01
lol sorry let me explain then.
redline is the recommened shift point for your engine's safe operating rpm.
rev LIMITER is usually a couple hundred rpm above redline as a final fail-safe should you not shift at the redline. it prevents your car from actually going into an unsafe operating rpm.
redline is the recommened shift point for your engine's safe operating rpm.
rev LIMITER is usually a couple hundred rpm above redline as a final fail-safe should you not shift at the redline. it prevents your car from actually going into an unsafe operating rpm.
