Exhaust ports and sealing...., ..how do you know? |
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Exhaust ports and sealing...., ..how do you know? |
falcor75 |
Feb 23 2017, 12:50 PM
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#1
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Senior Member Group: Members Posts: 1,579 Joined: 22-November 12 From: Sweden Member No.: 15,176 Region Association: Scandinavia |
How do you know you get a good seal at the exhaust port?
The only way to really know is to take down the heaterbox and look for soot on the copper gaskets. But by then you will need to anneal the gasket again and hope that you get a good seal the next time you mount the heater box too.... Tips and tricks are most welcome.... |
Rand |
Feb 23 2017, 05:16 PM
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#2
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Cross Member Group: Members Posts: 7,409 Joined: 8-February 05 From: OR Member No.: 3,573 Region Association: None |
QUOTE OK this might be crazy but what about a torque wrench? Nothing crazy about that! The nuts should absolutely be tightened appropriately. For anyone who isn't sure what that feels like, a torque wrench is important. The mating surfaces being clean and flat is most important. I've seen all kinds of things, from old gaskets left in, to erosion that started because of leaks at the head. Exhaust leaks at that location are a time bomb. Sometimes the tops of the pipes need filing to make sure the surfaces are flat and smooth. (Long file strokes across both pipe ends at the same time (per side pair) to make sure they are flat with each other.) Sometimes you need to keep the rear mounts loose so you can adjust the angle as you torque at the heads to preserve the flat mating at the heads first before tightening up the rest. Depends on your exhaust system though - this is why I love stub pipes. |
stugray |
Feb 23 2017, 05:29 PM
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#3
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Advanced Member Group: Members Posts: 3,824 Joined: 17-September 09 From: Longmont, CO Member No.: 10,819 Region Association: None |
- this is why I love stub pipes. (IMG:style_emoticons/default/agree.gif) I put them on while the engine is still on the stand and I can flip it upside down |
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