Plenum Port + Standard Gaskets = Bad Idea - Page 3 - ZR-1 Net Registry Forums

carter200 · 05-18-2012

Quote:

Originally Posted by rhipsher

No! It's one of my big black butt hairs.

Obama......You are such a kidder

gbmidyear66 · 05-18-2012

Before I ported the top end, I had a problem with the TB and the secondaries did not seal. I could not get the engine to idle below about 850 RPM (with A/C On).

Now - it idles right down at 650 (so I'm sure vacuum pressure is higher) AND the gaskets were thinned to accommodate the port - so they are definitely dealing with a higher vac pressure and have less meat to them.

Next time its apart (hopefully not soon) I will check the planarity of the IH and Plenum faces and let you know Lee.

rhipsher · 05-18-2012

Quote:

Originally Posted by carter200

Obama......You are such a kidder

Hey I shed allot. What can I say. Saloma lake loka.

05-18-2012	#22
gbmidyear66 Join Date: Feb 2008 Location: Vancouver, BC Posts: 252	Re: Plenum Port + Standard Gaskets = Bad Idea Before I ported the top end, I had a problem with the TB and the secondaries did not seal. I could not get the engine to idle below about 850 RPM (with A/C On). Now - it idles right down at 650 (so I'm sure vacuum pressure is higher) AND the gaskets were thinned to accommodate the port - so they are definitely dealing with a higher vac pressure and have less meat to them. Next time its apart (hopefully not soon) I will check the planarity of the IH and Plenum faces and let you know Lee. __________________ [SIGPIC][/SIGPIC] __________________ 1990 Corvette ZR-1 #2824 4.10's, Custom PROM, Flowmaster, Top End Port NCRS BC Chapter