65GS.com - Buick Gran Sport Enthusiasts!

Drivetrain => The Nailhead => Topic started by: bbbbuick on December 07, 2017, 02:28:30 PM

Title: Phenolic spacers for Carter AFB
Post by: bbbbuick on December 07, 2017, 02:28:30 PM

Hi All,

Has anyone had any experience with adding a phenolic spacer (1/4") to separate the Carter AFB from the heat of the manifold? Trying to combat fuel boil over after I park. I understand the car originally had a bakelite spacer so thinking it should work. Feedback much appreciated.

Elvin

Title: Re: Phenolic spacers for Carter AFB
Post by: telriv on December 08, 2017, 12:59:35 AM

It was a metal plate. Bakelight or Phenolic WILL NOT take the heat from the exhaust.

Title: Re: Phenolic spacers for Carter AFB
Post by: bbbbuick on December 09, 2017, 01:53:47 PM

Can anything be done to better insulate the carb from the manifold? Can you add a gasket to have a manifold-gasket-metal gasket- gasket- carb setup?

Title: Re: Phenolic spacers for Carter AFB
Post by: GS66 on December 09, 2017, 01:59:04 PM

I think you can do that, seems like I?ve seen it before somewhere and they claimed it worked.

Title: Re: Phenolic spacers for Carter AFB
Post by: WkillGS on December 09, 2017, 02:15:22 PM

You can plug the exhaust heat passage in the manifold, that'll keep the carb a bit cooler. I drill and tap with a 3/8" and install some set screws.
Once that heat passage is blocked off, you can use any carb spacer.
Manifold is still heated by exhaust gasses. Heat in the manifold will help atomize the fuel.

Another option is to buy better fuel.