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Heat riser position (photos)
#1
Quite a regular
Quite a regular

Chiefdan
See User information
I am having trouble with the car running when hot. ( See: HELP, car dies when hot ). I got to thinking about my heat riser position and it's possible relationship to my current problem. Can anyone tell if the riser is in the open or closed position from these photos? It is rusted in this position and does not move. Thanks again, Dan

Attach file:



jpg  IMG_4230.JPG (275.61 KB)
225857_642e6e0fa898a.jpg 1440X1920 px

jpg  IMG_4229.JPG (298.57 KB)
225857_642e6e3000e8a.jpg 1440X1920 px

Posted on: 2023/4/6 2:01
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Re: Heat riser position (photos)
#2
Just can't stay away
Just can't stay away

Gary49eight
See User information
Dan, my manifold has never had the bimetal spring on it. The flap isn't siezed, but the weight on the shaft is hanging down, this puts the flap in the "warmed up" position. I have had my manifolds off recvently, so I have seen this.
The intake gets plenty of heat from the exhaust manifold anyway, so unless you live on the Arctic circle, you really don't need this flap to work at all.
If your car is overheating, it is probably other causes. like the block full of rust or the distribution tube not doing its job.
Gary

Posted on: 2023/4/6 4:33
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