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Heat riser
Posted: October 17, 2006, 7:06 pm
by Clutch
Where can I get a new heat riser or at least a bimetal for my 223?
Posted: October 18, 2006, 2:06 am
by ICEMAN6166
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.
Posted: October 18, 2006, 1:57 pm
by Clutch
Thanks for the info!
Posted: October 18, 2006, 6:36 pm
by ABA
What is a heat riser?
Posted: October 19, 2006, 12:02 am
by ICEMAN6166
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.
Posted: October 19, 2006, 12:31 am
by ezernut9mm
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.

Posted: October 19, 2006, 6:47 am
by ABA
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.
