Dyno Day Confirmed! June 12th at 8:00am

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Jun 17, 2004 | 08:28 PM

#161

ChrisMCagle

Registered User

Joined: Aug 2003

Posts: 1,612

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From: Massillon, OH

Re: Plenum cracked

Quote:

Originally posted by scz
Plastic intake tbing is one thing, but a plastic intake manifold that has bolts which must be torqued is a whole nother thing. It might be safe in some applications, but from all of the feedback about those plenums, they obviously are not working.

Well, that is not entirely accurate. They do work... VERY well. The problem is that the material used combined with the stress of the engine vaccum is causing cracks. When the plenum is new (not cracked) it works beautifully. In fact, my plenum which is currently cracked is still running quite well. The only noticible thing wrong is my idle which now is a little rough, but once the rpms get above 2000... it's pristine. I just hope that the V4 will be the LAST version that we have to deal with and it will be functionally and structurally flawless.

-Chris