Repainting Throttle Body Cover - ZR-1 Net Registry Forums

JThomas · 06-16-2023

The color may be hard to match, especially if you're considering NCRS. If not, I would have the plenum, cam covers, snorkel and throttle body powder coated and dress it up a bit, then it will all match.

WARP TEN · 06-17-2023

Quote:

Originally Posted by JThomas

The color may be hard to match, especially if you're considering NCRS. If not, I would have the plenum, cam covers, snorkel and throttle body powder coated and dress it up a bit, then it will all match.

I agree with Joe. Contact Marc Haibeck about it. --Bob

Jetjock · 06-17-2023

Quote:

Originally Posted by JThomas

The color may be hard to match, especially if you're considering NCRS. If not, I would have the plenum, cam covers, snorkel and throttle body powder coated and dress it up a bit, then it will all match.

Joe, not doing NCRS, I just want the throttle body to match up with the rest of the plenum. The color on the is the original color for that year as it was stored and then put in the body. It looks like a different color than my 92 was. Another thing is that Marc said don't powder coat the engine as it can warp the cam covers. He said to paint it.

Roy

WARP TEN · 06-18-2023

Quote:

Originally Posted by Jetjock

Joe, not doing NCRS, I just want the throttle body to match up with the rest of the plenum. The color on the is the original color for that year as it was stored and then put in the body. It looks like a different color than my 92 was. Another thing is that Marc said don't powder coat the engine as it can warp the cam covers. He said to paint it.

Roy

I agree with Marc--paint it. He has been doing that for years with great results. Did you ask him about a paint to match a stock plenum? He should know about that. For touch ups I think he uses a paint he gets from Summit Racing, but can't remember exactly what it was. --Bob

Meanmyz · 06-27-2023

I thought I would relay my own experience with this. I too, repainted my plenum cover with the Lingenfelter paint. Trying to do it correctly, I removed all traces of old gasket material and cleaned up coolant residue under the cover. I recut and used my own bulk gasket material of the same thickness. Inside two years, the paint lifted again.

THIS Time, after cleaning everything up and repainting, I used permatex (orange, I think) to coat my cut gasket material and then let it dry. I reassembled. That was 20 years ago and I haven't had a problem since with electrolysis, or whatever causes the lifting. And yes, this on a car, that still runs the coolant through the throttle body.

As far as "match", for the fact that it was the Lingenfelter paint and somewhat close (but not perfect), I decided to leave it alone as is.

Case in point, I seem to think that coating the material helped against electrolysis. I did not paint the underside of the cover (not that anyone would), but I think that is important too...not to give avenues for the electrolysis to travel if it gets under any paint and just continues on... I only painted the top and sides of the cover (masked off bottom).

Hope my post makes sense and provides some degree of insight to someone. -Meanmyz.

06-27-2023	#5
Meanmyz Join Date: Feb 2006 Location: Springfield, Minnesota Posts: 444	Re: Repainting Throttle Body Cover I thought I would relay my own experience with this. I too, repainted my plenum cover with the Lingenfelter paint. Trying to do it correctly, I removed all traces of old gasket material and cleaned up coolant residue under the cover. I recut and used my own bulk gasket material of the same thickness. Inside two years, the paint lifted again. THIS Time, after cleaning everything up and repainting, I used permatex (orange, I think) to coat my cut gasket material and then let it dry. I reassembled. That was 20 years ago and I haven't had a problem since with electrolysis, or whatever causes the lifting. And yes, this on a car, that still runs the coolant through the throttle body. As far as "match", for the fact that it was the Lingenfelter paint and somewhat close (but not perfect), I decided to leave it alone as is. Case in point, I seem to think that coating the material helped against electrolysis. I did not paint the underside of the cover (not that anyone would), but I think that is important too...not to give avenues for the electrolysis to travel if it gets under any paint and just continues on... I only painted the top and sides of the cover (masked off bottom). Hope my post makes sense and provides some degree of insight to someone. -Meanmyz.