66DartConvert
Member
Hello all. I'm having heat soak issues with my Carter BBS on my 225 slant six (the fuel in my carb and stock metal fuel line is boiling from heat build up about 10 minutes after engine shut off when the hood is closed). I plan to do the following to resolve it...
1 - Reroute the fuel line straight up from the fuel pump and over the value cover with rubber fuel line (to keep it as far away from the hot exhaust manifold as possible).
2 - Install a phenolic spacer between the carb and the intake manifold to minimize heat transfer from manifold to carb.
3 - Install a heat shield between the carb and intake manifold to minimize heat transfer from manifold to carb.
A few questions...
The spacer...Where can I find the correct phenolic spacer? I have been coming up empty in some internet searches to find one. What thickness is suggested for the spacer (I saw one post that used a 3/8" spacer with good results). I'm assuming the spacer will need to have the same shape, notches and holes as the carb/intake manifold gasket - good assumption?
Heat shield...I am assuming I will need to fabricate my own. I've seen some diagrams/plans for making one of these. I am assuming I will need to duplicate the openings and notches of the carb/intake manifold gasket in the area of the shield that will be sandwiched between the carb and intake manifold - good assumption?
And one final question...Has anyone installed an electric fan to exhaust hot air out of the engine compartment after engine shut down? If so what type and where did you mount it. I would only do this if the changes mentioned above don't solve all of the heat soak.
Thanks all!!
1 - Reroute the fuel line straight up from the fuel pump and over the value cover with rubber fuel line (to keep it as far away from the hot exhaust manifold as possible).
2 - Install a phenolic spacer between the carb and the intake manifold to minimize heat transfer from manifold to carb.
3 - Install a heat shield between the carb and intake manifold to minimize heat transfer from manifold to carb.
A few questions...
The spacer...Where can I find the correct phenolic spacer? I have been coming up empty in some internet searches to find one. What thickness is suggested for the spacer (I saw one post that used a 3/8" spacer with good results). I'm assuming the spacer will need to have the same shape, notches and holes as the carb/intake manifold gasket - good assumption?
Heat shield...I am assuming I will need to fabricate my own. I've seen some diagrams/plans for making one of these. I am assuming I will need to duplicate the openings and notches of the carb/intake manifold gasket in the area of the shield that will be sandwiched between the carb and intake manifold - good assumption?
And one final question...Has anyone installed an electric fan to exhaust hot air out of the engine compartment after engine shut down? If so what type and where did you mount it. I would only do this if the changes mentioned above don't solve all of the heat soak.
Thanks all!!