Carb insulating spacer / shield Opinoins?

Marco, use the second one which extends under the float bowl.
The exhaust headers produce a huge amount of heat & they are right under the carb's bowl.
 
Laugh or say what you want, but I have a plywood spacer under my 1100 1v to help with vapor lock.
I also have one under an Edelbrock 4V carb on a 351 windsor.
I havent had a vapor lock on either car sinc I put them on.
If you know anyone that was around the old flatheads back in the day they used the same setup.

Also use a lead additive and ethanol treatment. I think the ethanol in the gas makes it a lot easier for a car in hot weather to vapor lock.
 
I think I will order the second one, with bowl shield. For the $30 it is not a bad investment. Considering how much money we put into
these cars anyways. :shock:
 
I believe several companies (DEI might be one) that makes a laminated aluminum product (two or more layers of aluminum separated by some other material) that is intended as a heat shield. I believe it can be used to shield starters from header heat. Were it me, I would use a material like this, and create as much a heat seration layer as I could.

Maybe something similar to this: http://www.speedwaymotors.com/Aluminum- ... ,1900.html
 
Watching the forum, this does not seem to be an anomaly like the head bolt/water pump area for many posters. Is it only when using larger carbs?
Thank you for your expertise! Still learnin
 
chad":19f28bp1 said:
Watching the forum, this does not seem to be an anomaly like the head bolt/water pump area for many posters. Is it only when using larger carbs?
Thank you for your expertise! Still learning
Click to expand...

I often travel in high temp area's in a lot of traffic. Some time's the car would be hard to start because of fuel boil. The electric fuel pump and new line I installed helped a lot. But, anything I can do to keep the carb cooler is worth it to me. Plus, from what I have "read" you can gain some HP (2-12 horses on the dyno) and some torque. There are many articles on the net. I have also seen dyno numbers posted to back things up. Was just wondering what people on this forum thought. Here are two articles:

http://www.motorsportsvillage.com/carbu ... acers.html
http://www.hotrod.com/techarticles/engi ... r_spacers/
 
I think you will find the potential for benefit in (at least) two ways.

One, is from a spacer adding increased plenum volume and having the potential for geater fuel atomization.

The other is from heat reduction. While a warmer mixture will usually benefit mileage, a cooler, denser charge may incrase power.

I would suggest looking for a way to divert or redirect heat away from the intake manifold and carb (via a shield) as well as a non-heat-conducting spacer to reduce transference of heat from the manifold to the carb.
 
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