Where I live it's been so cold your nostril hairs freeze, so naturally I've been enjoying my Greddy turbo's first winter a little too much. First and second gear are pretty useless, especially with the white salty coating on the roads. The problem is that I've gone beyond redline many many times because the RPMs are climbing faster than ever before with my new Hallman MBC and this cold weather. The tires just spin to redline instantly. Since I've over-revved the car still runs fine, but is there a way to check to make sure no damage was done by me going beyond the redline? Compression test good enough? I'm using the infamous blue box, btw with only 6.5psi.

 

i'm pretty sure your ok, I had a freind who removed his rev limiter(sp) on his d16z6 and was reving to 8k ona stock block

his motor is still really strong though...

 

im curious to! also what happens when u misshift? and that needle hits 9000 rpms?


[Modified by axion7606, 8:47 AM 12/7/2002]

 

Hitting rev limiter means hitting fuel cutoff, which is not good. That means you have all that extra air with no fuel = lean condition for a fraction of a second.

Try to avoid doing it. Learn to react quicker to your spinning tires darting to redline.

 

time to boost some more with that cold weather lets go 25psi (please don't think im serious)

 

I didn't hit the fuel cutoff, but I was definitely over redline. I've only hit the rev limiter once in my car and that was when I was NA, on the highway in 3rd gear. It wasn't a nice feeling and caught me by surprise. The engine is so smooth it feels like it can keep going so you really have to pay attention.

 

The problem with fuel cut-off is that there still is a small amount of fuel in the cylinder which causes a lean burn situation which means really F@#%ing hot burn IE BOOM!!! BANG!!!!!! melted stock pistons. Get the picture? I did it with my old CRX and Nitrous the piston actually went threw the head and hood and landed half a mile down the road. Scared the crap out of me. I beat the Rustang though. That was a fun car up till then

 

>>The problem with fuel cut-off is that there still is a small amount of fuel in the cylinder which causes a lean burn situation which means really F@#%ing hot burn IE BOOM!!! BANG!!!!!!<<

The problem with this whole thread is that fuel does not cut at the rev limit. It's an IGNITION CUT people.

A lean condition is bad for N.A. motors too. I've spent LOT'S of time sitting on the rev limiter in my D16 (autocross). No problems whatsoever. Hondas have excellent rev limiters. If it were a fuel cut, N.A. motors would be popping all over the place too.

 

I reved my old CRX DX past the end of the tach (like 8500 RPM) bone stock. It kept pulling!!! It still runs good on its 2nd owner after me, about 12,000 miles since, 140k total.

I have a friend who has hit 75 in 2nd in his 5 speed Golf. Aperently CIS has no revlimiter. I have another friend who broke the rev limiter on his stock 90 civic 4 door, he hits 8000 regularly, but he is on his second engine, the first one died from the oil draining out.

-Dustin

 

well this is just my 2 cents, but honda computers do have fuel cut, wich means that spark is still going, it doesn't cut the igniont and it does run lean, and it DOES BLOW MOTORS, i've had 2 stock FI b16's pop, blew all 4 pistons ringlands b/c of the stupid fuel cutoff..........wich is not a good setup on either a NA or FI setup, so i would recomend no rev limiter with close eye on the tach, and a quick hand, or get somekinda msd setup......