Installed everything, car started no leaks, no rocker noise, except high pitched ringing. Disappears on RPM increase and when the engine gets warm. ( still the odd ring).

high pitched Rings at Idle. I installed rockers 1.84, 3.25 pulley, 3 inch down pipe, PCM, new plugs 180 t stat, Throttle body HV and SS inter cooler.

I think its the two plates?

If it only does it when cold, try cleaning the IAC valve... That's the valve that makes the noise that people complain about making a sucking sound at idle when the car is cold.

check your gaskets around the intake and intercooler.i had same promblem bad gasket made a high pitch sound,take a soap and water solution in spray bottle and spray around the intercooler.if it goes away you have a gasket leak.i used the gm gaskets when installed intercooler bad mistake!!i hope this helps


99 gtp coupe

You can spray carb cleaner or starting fluid around it to find any leaks as well. You'll hear the engine rpms go up if there is a leak.

are you sure thats not the sound of you S/C? It will probably be a lot louder now

As Aaron suggested I used soapy water. It appears that it is being suck in at the rear right side by the snout.
I will also apply what Rook suggested in 5 minutes.

The seal look fine when install, any takes on that one?

Can I drive the car safely until I fix it?

Contact..I sprayed carb stuff, engine reacted. Thank you one and all.
Hopefuly tommorrow "I get her done..."

Way to go!!!

Good luck with the repair!!

that is totaly wierd my leak was in the same exact spot!!makes me wonder??


99 gtp

And you used the GM gasket and I used the ZZP ones? Now I am not sure what to use...but the closes gasket is in town. I am going to take a long hard look in that area. Sounds like a question for the forum.
I am going to use a GM gasket, hopefully they have one in town.
Man does that car haul, the black marks must of been 20 feet long...
The sound disappears when the car warms up so I hope with the hole plugged the black marks on the pavement will get longer.

When you get some new gaskets, try using some of that Permatex copper gasket spray. You just spray the gasket prior to installation and it helps fill the crevices. Might assist in getting a nice seal.

would that spray work with my valve cover gaskets?

The spray is mainly for metal/stiff paper gaskets to help fill voids and create a better seal. Head gaskets are an example of a good use. Using it on cork or rubber doesn't really help anything since they swell/compress naturally. Best thing for those is proper torque and a clean mating surface.

Improper torque sequence?

No I dont think so Herc, we followed the instructions. alternated sides like a tire. The guy that helped me with the work is a good lic Mech.
We took 3 times longer than we should of, just to make sure things went right. And every new piece we put in (except sc leak) is running very well.
Perhaps me and Aaron just happen to get that type of gasket.

Just a thought. Maybe gasket surfaces damaged durring gasket removal? Or a defect in the machining of the I/C.

I used new ZZP gasket and Aaron used GM Gaskets.

Any how.....more work..

i hope it is not a flaw in their machine work !!


99 gtp coupe

ZZP replied that I should use RTV and that should seal it. Rook suggested I use gasket spray and I will.

I don't want to take it apart a third time.

Good luck with the repair dude...I wanna see what this car can do though...hit us up w/ some numbers once everything is working properly.

I already had to cancel first Dyno run...before the leak got big, the tires would burn rubber for a long way.......
any how back to work....

Car is repaired. When installing a gasket on the supercharger look very closely at the end where the supercharger snout is. You will see there is very little room for error. My gasket was only on at that point by 1/8 th of an inch even though the bolt holes where lined up and the rest of the gasket matched fine. There is room for at least 3/8 of an inch.
This problem was reported with two different makes of gaskets.
I have pictures not to sure how to post them.

To post a photo, go to photobucket and upload it there (it's free). That will give you a web address to view the photos.

Come back here, and type (IMG)www.website for your photo.com(/img)

But instead of the () brackets, use []

Top photo shows the only spot it is in contact with.
IMG]http://i142.photobucket.com/albums/r85/whitegtp01/Picture176.jpg[/IMG]

A good gasket on the bottom (black) Pontiac. Seems to be missing the notch cut out.