I normally don't street race, but I suppose something was in the air today and I felt like spanking the modded import car next to me at the stop light that had been riding my ass for the last few minutes. I stopped paying attention to my shifting for a split sec and I hit the rev limiter in 1st gear. It kind of surprised me since I'd never hit it before. The engine lost power for a sec and then I shifted into 2nd.
It depends on your timming chain. some stok chains have too much slack in them and will snap. It is rare in vipers but it does happen.
Also, because you on bumped it once and not 30 times in a row...you are most likely in the clear.
Back when my car was stock I did it and nothing happened.
You will know if you hurt something. it will run rough(bent pushrod, valve ect.) Or it will not run at all(timing chain, oil pump, cam bolt, locked motor ect)
with the durability testing that new engines go through I would have to say no. You could probably drive to work bouncing off the rev limiter the entire time and be fine.......now go try and see if I'm right.
Come on guys - your telling me these motors "might" be damaged by hitting the rev limiter but that your "probably" ok if you only did it a few times? I don't know alot about the rev limiters on these cars bit aren't they a soft limiter like a MSD? If not they ought to be. Help me out here. I have SB Chevys and BB Fords I bounce of the MSD box all the time and have never had any damage. Course I built these motors and run the limiter 500 RPM below the ratings.
The real question is did you beat the rice burner!!!!!!!!
Most of them. I went to a school of 36 people on Saturday and at they end of the day they set up a course and we ran. First and Second place were Evos at 37.1 and 37.5. I ran third at 37.8. One of the instructors ran my car to a 35.5. So I have a lot of work to do. This is on street tires and stock alignment.
Running autocross will give you a whole new outlook on imports.
The real question is did you beat the rice burner!!!!!!!!
It was no contest. He was in my rear view mirror from the time we left the stoplight, at least until I got to 3rd gear and I let up off the gas. When I let off the gas, he whizzed by me. He kept accelerating for another block or two ahead of me after I slowed down. It was kind of funny that he kept going, but I was more concerned at that moment about whether or not I'd damaged my engine when I hit the rev limiter. It's good to read here that I probably didn't.
with the durability testing that new engines go through I would have to say no. You could probably drive to work bouncing off the rev limiter the entire time and be fine.......now go try and see if I'm right.
Hmm...and how much will a new engine cost me after my test?
Would you mind elaborating on "it depends"? I've heard that it's worse to downshift and hit the rev-limiter than to hit it while accelerating.
with a stock valve train @ high revs your valves will float, aka: not be in the location that is intended at a certain crank position. this can cause a valve to meet up with a piston and bend. (chance comes in here, not guaranteed to float - engine heat, spring tolerance, rocker tolerance, push rod tolerance, etc come into play)
the rev limiter works while accelerating, but not decelerating. if you downshift there is no limiter, keep that in mind when rowing the gears. Get a good ratchety shifter so you know without a doubt what gear your in, (and dont miss!).
the v10 is a large displacement motor & is designed for low rpm TQ. the stock motor has pore oiling even at low rpms. at high rpms its even worse. in stock form keeping the revs below 5500 will keep the life up. Get yourself a shift light & set it to 5400. Raptor Shift Light
If you plan to keep racing - modify your oil pan with trap doors, or buy a comp coupe oil pan /w pickup. this keeps the oil near the pickup instead of jammed to the back/sides of the pan. during your 1st rebuild you can modify the crank to help oiling. 1000$ will get you an accusump setup that will keep your oil pressure up during dips that would normally cause extreme wear.
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2001 Sapphire GTS - Daily driven Street Monster
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Last edited by KepRght : March 30th, 2007 at 06:47 PM.
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