DupermanDave

on the 22re, what are some affects of having an exhaust leak? When I did the head a while back, we found about 2 stripped holes in the head. We never got around to fixing them. Will 2 or even 3 stripped studs cause a major exhaust leak, and what are the affects of such a leak?

Matt16

[youtube]http://www.youtube.com/watch?v=RFYa6sjhh_E&feature=related[/youtube]

The only real concerns are noise, and possibly allowing exhaust into the cab. Small leaks are mechanically not a big issue.

Trustyrusty

Crappy uhmm... performance? Little bit of power loss prolly? and im sure its leaking... yeh.. leaking..

okie81

Other than driving you crazy and haunting your dreams, not much to worry about a small leak.

Matt16

nope, no performance loss.

YoYoMa

I noticed a small power increase after fixing the leak I had post o2 sensor. It fixed my lean issues too. I would presume that one pre o2 would be much worse.

Matt16

O2 sensor measures the concentration of O2, not the "quantity", so a leak above the O2 sensor isn't going to mess with the reading.

I can think of no way for a small leak to reduce performance. Seat of the pants is really unreliable as a means of guessing power gains. If my engine were sounding better, I might subconsciously assume it had more power as well.

DupermanDave

Thanks for the info. I still plan on fixing the stripped head holes, but I never sprang the $50 for a heli coil kit. I'll be doing that soon though. As soon as the weather gets nice.

ozziesironmanoffroad

isnt there something about an exhaust leak frying a valve or something? or is that a MAJOR one?

Matt16

Valves warp if they are cooled too fast, but that's like tossing a red hot valve into a bucket of ice water, not air flowing through the tiniest of leaks and cooling off the valve stem.