I have had a ih8ricerz chipped P28 in my car for awhile and its got a rev limit of 8400 rpms. I have hit the rev limiter a few times not on purpose just not paying close enough attention to the tach and never had a problem. I just want to know if anyone else has had any problems with a slightly higher rev limit than the stock limit on stock cams and valvetrain. My car actually feels like it pulls all way to the limit with the stock cams which is also surprising to me.

 

not very safe. rev little over rev limit will be fine. i believe they design to be ok to rev over little red line..some case, just show them dont rev over pass 8200 what ever GSR red line is.

 

Its not safe. Stock gsr is not meant to rev past 8100. Anything after that you begin to get valve float, which could allow a piston to hit a valve. Plus stock gsr cams don't make any more power past redline, believe it or not you will actually be slower in a race.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by AlpineIntegra01 &raquo;</TD></TR><TR><TD CLASS="quote">Its not safe. Stock gsr is not meant to rev past 8100. Anything after that you begin to get valve float, which could allow a piston to hit a valve. Plus stock gsr cams don't make any more power past redline, believe it or not you will actually be slower in a race.</TD></TR></TABLE>

I dont think Im any slower since I just pulled on an 05 RSX-S the other night and I probably reved a little over 8000 rpms. I dont think Acura would have made some valve springs that couldnt take a little over 8000 rpms and stick them in an engine that was designed to spin that high. Doesnt seem like a good idea it seems that the springs would break all the time due to being worn out and I have seen numerous B18's that have over 100k on the odometer and still get abused and run just fine. I personally think there isnt a big problem with a slightly higher rev limit on the GSR valvetrain?

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Chris DC2 &raquo;</TD></TR><TR><TD CLASS="quote">not very safe. rev little over rev limit will be fine. i believe they design to be ok to rev over little red line..some case, just show them dont rev over pass 8200 what ever GSR red line is.</TD></TR></TABLE>

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by AlpineIntegra01 &raquo;</TD></TR><TR><TD CLASS="quote">Its not safe. Stock gsr is not meant to rev past 8100. Anything after that you begin to get valve float, which could allow a piston to hit a valve. Plus stock gsr cams don't make any more power past redline, believe it or not you will actually be slower in a race.</TD></TR></TABLE>

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by ringgold &raquo;</TD></TR><TR><TD CLASS="quote">
I dont think Im any slower since I just pulled on an 05 RSX-S the other night and I probably reved a little over 8000 rpms. I dont think Acura would have made some valve springs that couldnt take a little over 8000 rpms and stick them in an engine that was designed to spin that high. Doesnt seem like a good idea it seems that the springs would break all the time due to being worn out and I have seen numerous B18's that have over 100k on the odometer and still get abused and run just fine. I personally think there isnt a big problem with a slightly higher rev limit on the GSR valvetrain? </TD></TR></TABLE>

 

All i know is that honda put the redline where it is for a reason. And I know for a fact that a stock gsr does not make power past 8000rpms. Look at any stock dyno graph of a gsr, the hp and tq begin to nose dive after 7900.

 

keep going past the stock redline and you'll be on your way to a rebuild/new motor real soon. Its not worth the risk of grenading your motor.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by ringgold &raquo;</TD></TR><TR><TD CLASS="quote">I dont think Im any slower since I just pulled on an 05 RSX-S the other night and I probably reved a little over 8000 rpms.</TD></TR></TABLE>

the driver probably sucked. u aren't doing your motor any good, it's gonna die an early death. don't do it.

 

Ok whatever you guys say I still havent seen one person chime in here yet with a story of where they blew their engine up becuase they reved 400 rpms past where the stock rev limit is supposed to be and Im not talking about a miss shift or anything like that. Im not convinced yet with anything you guys have told me. Actually the guy that rechipped my ecu hasnt heard of any bad reports either and he uses or used the same chip that im using in his stock valvetrain GSR engine.

How bad can a driver be racing a stock car from a roll? Is there really that much to driving a stock RSX-S? He didnt miss any gears!!

 

 

i find that i do better in races when i go as close to the redline as possible (8200rpm)

maybe power does decline after 7900, its not noticible if it does, but shifting at 8200 from 1st to 2nd will keep me in the power band (&gt;5800 rpm).

 

I have my redline set at 8500rpm. I don't see a point of going that high on stock internals and a GSR tranny, I have it there so I have a nice little window between 8100 and 8500 to shift in

I don't see anything THAT bad happening from hitting a little over redline once in a while (like maybe gunning it on the weekend or something). It's not like you are staying in high RPM for an extended period of time like on a road course.

 

their is a redline for a reason.....

 

and I passed that red line for a reason and my car is running great for a reason

 

still no one posted anything in here about their engine blowing up because of a slightly higher redline. WORD

 

dude.. look.. chances are that by going just a little over redline once in awhile youll be okay.. ive done it occasionally and my buddy used to have a single cam civic he didnt give a **** about that used to try to shift off of the rev limiter every time.. but the point is, honda put a redline/rev limiter because the valvetrain is engineered to rev to a certain limit. I wouldnt try to guess at how generous they made the redline/rev limiter with respect to blowing your motor. if you want to do it then go for it. But when people tell you its not a good idea and you say you want proof..... cmon dude... get real.. either take some good advice from your fellow HT members and be careful when you do it ( it wont help you any, your HP drops after prolly 78-7900 anyways). there really is no point in doing it, so why even bother?

your valves could bind/float causing a piston to have a not so friendly meeting with a valve and bye bye motor.

 

Look dude i rev that high not because it makes more power but because it drops my rpm's in a nice good part of the power band on my engine. I personally have never heard or knew anyone that blew their GSR engine up doing anything like what Im doing. Also half of the GSR valvesprings are the same part number as ITR valvesprings and for sure they are made to rev higher. Either way not one person came in this thread posted that they blew their engine up. If anything it was people with no personal experience telling me stuff that I could care less about like "There is that stock rev limit for a reason" and stuff like that.

So either you have a story where you blew up your B18C GSR engine because you had a higher rev limit or you shouldnt have posted in this thread. Thats my opinion.

 

the only valvesprings that are the same are that the stock intake valvesprings on the gsr match the exaust valvesprings on the ITR.. (i think) although I personally have never blown a motor revving too high, im sure its happened.

and in response to me posting on this thread... you asked if anyone had a horror story.. my response (post) is no i dont personally, but i dont recommend doing what your doing.. but my overall advice is do it and you'll find out whether its bad or not.

 

oh and by the way... if you are using a p28 how are you controlling your butterflies? or do you have an aftermarket IM??

 

Blox intake mani

 

im thinkin about doing the same... was it a bitch? i saw a thread on installation and i heard you gotta use the itr cable/bracket or whatever because it sticks?? how did you solve that problem?

 

used ITR throttle cable and bracket. Had to extend my fuel line in my car also. Other than that it was straight forward.

 

are people running into the same problem with the skunk2 mani??? and where did you get the itr cable and bracket?? also if you got a p72 ecu what do you do about the ecu looking for the iab?

 

You get the ITR cable and bracket from the dealership parts dept. And the P72 doesnt look for the IAB. it doesnt give any CEL's.

 

the p72 does look for the iab.. your running a p28 right? i heard that people running the stock ecu had power loss due to the ecu trying to find the iab