KeithC2Turto

Carrera,s are are thought to have issue with the strength of their rod bolts.

Anyone seen a failure.

Wonder if they can handle up to 7300 rpms on the track.

Ed Hughes

There's not really an issue with the strength, it is just that with the Carrera 3.2's, the rod bolt diameter was reduced to fit, thereby creating a situation where they can stretch in an overrev. My guess is 7300 isn't an issue? What happened, a missed shift?

I ran my engine up a lot higher than that when I did the deed last year...bent the exhaust valves, which I think is the determining factor on whether you did damage with an overrev. If you get to that point, and have to tear down to redo the heads, then the rod bolts are on the must-do list. That, and racing valve springs and Ti retainers IMO. YMMV.

How is the engine running?

KeithC2Turto

Ed, thanks. I have not had any problems. Just wonder if I set it up righ and burn a chip for 7300 rpm like an S, will it hold.

K

spence88mph

still gonna boost it Keith?! you wont need anymore than 6500 with boost.

Steve Weiner-Rennsport Systems

JMHO, but I would not run those 9mm stock bolts at 7300 due to bolt stretch issues. Thats looking for a heap of expensive trouble.

Ed Hughes

7300 on a stock bottom end for a redline is probably not wise. I thought you'd spun it up once. Depending on mods, you're probably not making more HP at that top end.