The Stovebolt Site Forums The Shop Area Engine Shop heat riser

I got around to unsticking my heat riser and now I have a question. I read every post on the subject on here and have looked at the shop manual but am still confused.

1. With the engine cold in what position should the counter weight be when you hook the spring up?

2. Does the counter weight move to towards the engine when it gets hot and if so how far? mine hits the manifold with no spring attached, should that happen?

3. When I let the counter weight drop away from the engine it has a hard stop and the. Is that open or closed?

If someone had a picture that would be even better! thanks for your help!

When it is closed the flat part on the bottom should be horizontal. When open the weight pivots toward the engine against spring pressure about 35-45 degrees. When released it should go back to the closed position. The spring relaxes when it gets hot & it opens from exhaust pressure as you are driving. It still remains closed at idle but opens freely when driving.

1. The flat on the counterweight should be approximately parallel with the ground when cold.
2.Yes, it should tip until the flap rests against a small tab on the inside which should stop it from turning further.
3.??? Clockwise from the weight end is heat on (cold) and ccw is heat off (warm engine). The flap is what stops rotation in both directions.

Here's all I have for a picture:

http://rides.webshots.com/photo/2495723850023244788ATCiri

So in its cold position with he flat part of the weight approx. parallel with the ground. between both of your explanations, I think I got it. I will install the spring tonight. Thanks for the clear explanations. the pic helped as well!