fuel boiling

[565bbchevy]

The ones that are only wood laminate do an excellent job of insulating the carb but they can crack so I do not feel they are as durable.
The Jomar ones I use now can be contoured, drilled, slotted and even used as 2 to 4 barrel adapters since they are far stronger than the wood or wood laminate ones.
If the spacer you are looking at is listed as "phenolic" but looks kind if like wood these will be more durable than one made of "wood or wood laminate" but still have excellent insulating qualities.

 

[1Bad4558]

Okay thanks for all the info it's been real helpful.

 

[DoubleV]

Doesn't anybody find it odd that fuel would be boiling in the carb with the engine temps at only 165?

 

[1Bad4558]

I do. But my spacer came in today I'm gonna get it on tomorrow and see what happens.

 

[jacobdavis1979]

Doesn't anybody find it odd that fuel would be boiling in the carb with the engine temps at only 165?

Not at all my malibu pulled the same crap a few years ago and it never runs any hotter than 170 even when its 100 degrees outside.
Theres 2 problems that cause this mostly and thats ethanol gas nowadays and the aluminum body of an edelbrock carb with those to combined its a vapor lock disaster. Thats why my fuel line is all rubber now no metal line routed along the wheel well as far from the block as possible and why i got my 1 inch phenolic spacer under the carb. Todays gas boils like crazy and edelbrock carbs are huge heat conductors.

 

[Clone TIE Pilot]

Doesn't anybody find it odd that fuel would be boiling in the carb with the engine temps at only 165?

Not at all my malibu pulled the same crap a few years ago and it never runs any hotter than 170 even when its 100 degrees outside.
Theres 2 problems that cause this mostly and thats ethanol gas nowadays and the aluminum body of an edelbrock carb with those to combined its a vapor lock disaster. Thats why my fuel line is all rubber now no metal line routed along the wheel well as far from the block as possible and why i got my 1 inch phenolic spacer under the carb. Todays gas boils like crazy and edelbrock carbs are huge heat conductors.

What about the stock Qjets, would they be as prone to boiling? I think they are pot metal instead of aluminum and the mounting gaskets are usually pretty thick.

For some engines they sell lifter valley splash shields to keep hot oil off of the bottom of the intake.

 

[foxtrot]

For some engines they sell lifter valley splash shields to keep hot oil off of the bottom of the intake.

I would more likely think that the valley pan gaskets are more designed for ease of installation than for thermal reasons. After all, most GM intakes have an exhaust crossover. Just my two cents..

 

[foxtrot]

Doesn't anybody find it odd that fuel would be boiling in the carb with the engine temps at only 165?

That's exactly why I asked about the fuel pressure when he mention fuel squirting out of the jets. Anywho, let us know what you find.

 

[1Bad4558]

Got my spacer put on last night and took here for a good long drive. That seem to do the trick. Used my ir thermometer to check the carb. temp and it was only 93 degrees.

 

[foxtrot]

Glad to hear that you solved your issue!