phenolic carb adapter
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Fleet Mechanic
Joined: Apr 2014
Posts: 1,790
Likes: 182
From: Oakland, AR
phenolic carb adapter
78 F150 460. I have a 460 with stock manifold, trans-dapt adapter spread bore to straight bore holley. Is there anyone who makes a phenolic adapter to replace the aluminum adapter?
I have searched and came up empty.
I have searched and came up empty.
Moderator & parts slinger
Joined: Feb 2007
Posts: 50,239
Likes: 5,811
From: S/W Missouri, Polk county
Also think stock car guy or local hot rod performance shop?
https://www.holley.com/products/fuel...s_and_spacers/
https://motorsportsofkc.com/browse?c...118281&page=11
https://www.google.com/search?q=phen...h=718&dpr=1.75
https://www.holley.com/products/fuel...s_and_spacers/
https://motorsportsofkc.com/browse?c...118281&page=11
https://www.google.com/search?q=phen...h=718&dpr=1.75
Moderator & parts slinger
Joined: Feb 2007
Posts: 50,239
Likes: 5,811
From: S/W Missouri, Polk county
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Fleet Mechanic
Joined: Apr 2014
Posts: 1,790
Likes: 182
From: Oakland, AR
In trying to cure my problem (vapor locking) is going to be either Mr. Gasket 3710 or 97. The 3710 is stacked gaskets with heat shield. The 97 is stacked gaskets and called heat dissipater.
Anyone have any opinions.
Anyone have any opinions.
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Post Fiend
Joined: Feb 2008
Posts: 5,831
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From: St Albert, Alberta
Are you getting vapour locking in the carb or fuel lines ?
Fleet Mechanic
Joined: Sep 2009
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From: Northern Virginia.
Post Fiend
Joined: Feb 2008
Posts: 5,831
Likes: 121
From: St Albert, Alberta
You are getting fuel boiling due to the ethanol content in the fuel, modern fuels are much lighter (in terms of heavy hydrocarbon chains) and the addition of ethanol compounds the problem further.
So you can fix this 2 ways insulated the carb from engine heat Phenolic spacers or more fibre spacers or the addition of a heat shield such as this. https://www.summitracing.com/parts/hly-108-70
The other solution is to add about a gallon of diesel to a tank for fuel, doing this will add in heavier hydrocarbon chains and lower the boiling point of the fuel. This is a common and easy solution that works for most people. Using Diesel also does not affect the octane rating of the fuel.
So you can fix this 2 ways insulated the carb from engine heat Phenolic spacers or more fibre spacers or the addition of a heat shield such as this. https://www.summitracing.com/parts/hly-108-70
The other solution is to add about a gallon of diesel to a tank for fuel, doing this will add in heavier hydrocarbon chains and lower the boiling point of the fuel. This is a common and easy solution that works for most people. Using Diesel also does not affect the octane rating of the fuel.
Moderator & parts slinger
Joined: Feb 2007
Posts: 50,239
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From: S/W Missouri, Polk county
I fought fuel boil/vapor lock with my Bronco for a while, ended up stacking a old Ford 2bbl EGR plate on top of the Mr gasket adapter. And insulated the fuel lines.