On Feb 12, 2015 3:11 PM, "Dan Heath via KRnet" wrote:
>
> Yes, keep the heat in the pipe. This is good for many reasons. Get your
pipes coated inside and out, or do it yourself. I had Jet Hot do mine and
I believe that Mark L. does his.
>
>
That's very interesting. Is it enough to keep head te
I wrapped my bd4 crossover pipes with ceramic tape from JC Whitney, to minimize
heat conduction inside the cowl. I painted the engine white and the cowl
interior black to maximize heat radiation to the cowl. The cowl exterior became
noticeably hotter to the touch, so ideally you would use a cond
KRnet
Subject: Re: KR> OT: heat rejection capacity from exhaust port walls
On Feb 12, 2015 3:11 PM, "Dan Heath via KRnet" wrote:
>
> Yes, keep the heat in the pipe.
___
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Yes, keep the heat in the pipe. This is good for many reasons. Get your pipes
coated inside and out, or do it yourself. I had Jet Hot do mine and I believe
that Mark L. does his.
It appears keeping
the heat in the exhaust flow is the key.
I met a guy at Oshkosh who had an RV 6 with a Lyc 360. He had the piston tops,
exhaust ports and exhaust pipes ceramic coated. The cooling air inlets are 2
1/8 diameter and he has no problems with cooling issues. It appears keeping
the heat in the exhaust flow is the key. Interesting stuff.
Hi,
Slightly OT but i don't know where to ask.
Is heat absorption from exhaust port walls more significant than that
absorbed from chamber walls?
That means if we don't alter anything else but reduce absorption, can
we see a significant drop in cylinder head temps?
Maybe an effective thermal ba
Depends on port and chamber design of a given engine. The exhaust ports
are typically the hottest areas on the cylinder head. If we're talking
VWs, the exhaust port areas are designed to be fan-cooled. Thermal
barriers work, so I would think a reduction in heat absorption would
occur. Significa
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