Heat riser

Clutch · Post by **Clutch** » October 17, 2006, 7:06 pm

Where can I get a new heat riser or at least a bimetal for my 223?

ICEMAN6166 · Post by **ICEMAN6166** » October 18, 2006, 2:06 am

i have seen some on e-bay from time to time.the 292 uses the same one.not sure about other engines but as long as the size of the hole and bolt pattern match you can use it.

Clutch · Post by **Clutch** » October 18, 2006, 1:57 pm

Thanks for the info!

ABA · Post by **ABA** » October 18, 2006, 6:36 pm

What is a heat riser?

ICEMAN6166 · Post by **ICEMAN6166** » October 19, 2006, 12:02 am

the little flapper valve in the exhaust manifold.the bi-metal is the curled spring.the butterfly stays closed until the engine warms up,heating the spring which opens it.

ezernut9mm · Post by **ezernut9mm** » October 19, 2006, 12:31 am

ABA wrote:What is a heat riser?

that thing that will make a good motor smoke when warm if it's a sticking in the closed position. lol. :wink:

ABA · Post by **ABA** » October 19, 2006, 6:47 am

Oh ok, that's what I thought it was just didn't know what it was called.
I got the one that came off my 352, told my nieghbor it was a 1 barrel carb. :lol: