Need Opinion?

[Anonymous]

Just finished up a few projects, installed my transgo shift kit and took it for a test drive this morning.

I like how you can hold a gear to any rpm but one thing I'm going to have to be carefull is that you can downshift any gear at any rpm

Dont ask....

Anyway,

I made up a new carb heatshield and I was curious if I should line the bottom side with any heat reflecting material? It's aluminum stock 6"x20" with the shiny aluminum facing up and the white powdercoated side facing the headers.

In the summer the carb bowl heats up hot enough that you can lay your hand on it for only a few seconds before it starts to burn.

Also got my cool can plumbed up.

Would there be any benefit in shielding the fuel line from the carb to the firewall filter with some of that foam pipe insulation that you can buy at the hardware store?

Thanks,

Doug

 

[FrankBoss]

Doug I think what you have done with the shield is a great start...a deflection plate under the carb would hurt at all either... it just seems there is so much heat soaking threw the intake as well. air movement in this area might be the next best thing. I dougt that reflective paint would help.

I'm a big fan of isulation on the fuel lines... after doing a few hot laps at the track you can feel the diffrence of the fuel temps right threw the bowls on my Pinto.

You cant really compair this situation with main stream motors because the intake and ehauste is so close together in the head casting.. the simese port is more of a henderance indesign. So I think your on the right track to over come the temp issue.

 

[mach1 mark]

I don't know about that heat sheild, but that engine compartent is one of the best I've seen. WOW Looks good. The shield looks like it belongs, but those headers look great, hate hidding those. I always thought the heat wrap for the headers is a good Idea. How about the underside,(photos) it gives the rest of us something to strive for!!

 

[shmoozo]

Anyway,

I made up a new carb heatshield and I was curious if I should line the bottom side with any heat reflecting material? It's aluminum stock 6"x20" with the shiny aluminum facing up and the white powdercoated side facing the headers....

Would there be any benefit in shielding the fuel line from the carb to the firewall filter with some of that foam pipe insulation that you can buy at the hardware store?

First of all, I would urge you to take that thing and round the corners on it with a grinder or something so you don't accidentally cut yourself one of these days. Safety first and all that.



As for the rest of your idea, well, I'd say play it by ear. If you still have problems then perhaps additional measures would be needed. Otherwise, why bother?



An alternative would be to add a second heat shield plate a little way above the first one (assuming there's room) Mount it on the first plate with some spacers. Half an inch or so would be great. Make a few small cut outs or dips in it for clearance where needed. That would probably solve any remaining problems.



Insulating the fuel line might help, but so could rerouting it a little to avoid exhaust heat.

 

[wsa111]

Doug, yes get some reflective heat shield insulation on the fuel lines & also on the bottom of the heat shield.

The reflective insulation is available from summit for the fuel lines & as cloth for the underside of the carb shield.

I used toyota FIPG sealer as the means of attaching the insulation cloth
on the bottom of my heat shield.

The FIPG sealer is fantastic, i used it to fasten the same reflective cloth to the bottom of the evaporator box on my previous vehicle the 87 el camino, since the headers ran only 1 1/2 " below the plastic case, never had a problem.

PM me with the size reflective cloth you need since i have some left from that vehicle. Bill

 

[Anlushac11]

8)

Do you have a insulating carb spacer between intake and carb? Might cut down on heat soaking into carb from intake.

Are you are going to have header side of heat shield coated with a thermal barrier? If not the shiny reflective surface will reflect more heat.

I would also insulate the fuel lines to the cool can.

 

[Anonymous]

Doug I think what you have done with the shield is a great start...a deflection plate under the carb would hurt at all either... it just seems there is so much heat soaking threw the intake as well. air movement in this area might be the next best thing. I dougt that reflective paint would help.

I'm a big fan of isulation on the fuel lines... after doing a few hot laps at the track you can feel the diffrence of the fuel temps right threw the bowls on my Pinto.

You cant really compair this situation with main stream motors because the intake and ehauste is so close together in the head casting.. the simese port is more of a henderance indesign. So I think your on the right track to over come the temp issue.

I'll insulate the fuel line to say 18" back from the engine also then. The reason I mention the hardware store black foam pipe insulation was I saw it in Car Crafts latest issue.

It has one of those 1/4" thick phenolic gaskets under the carb allready so hopefully between the 2 it should be enough.

Are you are going to have header side of heat shield coated with a thermal barrier? If not the shiny reflective surface will reflect more heat.

Yep,

It appears Bill is going to help me out there!

First of all, I would urge you to take that thing and round the corners on it with a grinder or something so you don't accidentally cut yourself one of these days. Safety first and all that.

Great idea! I'm sure I woulda figured that out on my own after the 1st couple of cuts but the pain...

I don't know about that heat sheild, but that engine compartent is one of the best I've seen. WOW Looks good. The shield looks like it belongs, but those headers look great, hate hidding those. I always thought the heat wrap for the headers is a good Idea. How about the underside,(photos) it gives the rest of us something to strive for!!

Thanks you! Been a lot of work and as you can see, I have a great love for bling, bling decals under the hood!

Which underside photos are you talking about?

The FIPG sealer is fantastic, i used it to fasten the same reflective cloth to the bottom of the evaporator box on my previous vehicle the 87 el camino, since the headers ran only 1 1/2 " below the plastic case, never had a problem.

PM me with the size reflective cloth you need since i have some left from that vehicle. Bill

Bill, I'll PM you in alittle bit and thank you!!! Is that FIPG sealer the same stuff you sent me last summer?

Thanks for all the ideas!!

Doug

 

[lightnin-boy]

Doug,

I think you just want to make us drool... Awesome work!

Kirk

 

[woodbutcher]

Outstanding.
Leo

 

[teslafan]

your engine looks way cool.. man i got a lot of work to do..i can't see your heater hoses, so i guess you have no heater how did you by-pass it? thanks for the motivation to make me work mine.. 8)

 

[Russ]

What is the brass colored item tapped into the intake log opposite the breather cap? Great looking engine bay!

 

[Anonymous]

your engine looks way cool.. man i got a lot of work to do..i can't see your heater hoses, so i guess you have no heater how did you by-pass it? thanks for the motivation to make me work mine.. 8)

I removed the heater system to save weight (27 lbs total) since I dont drive it in the winter dont make no differance to me

I went to the hardware store and bought a couple of those allen head brass pipe plugs, screwed them in and called it good.

Russ,

Vacuum hose tree I liberated from a V8. The 1978 and later heads have a vacuum fitting up front on the intake instead of back by the carb like the earlier heads.

Thanks all!!

Doug