BoltsMissing
Active Member
Here is a possible solution to prevent leaking exhaust due to expansion from heat
Motor bikes have fins on the exhaust pipes at the header/port section.
It was also suggested at a car exhaust place, to try a heat sink principle.
The way it seems to work is, heat causes the plate on the HT's exhaust pipe
header to warp.
If that heat is transfered away, then it may reduced the tendency of warping.
The way I've done a test is remove the HT exhaust studs, replaced with longer allen key bolts, filled the slack with spring washers and the HT's nut.
Spring washers may be an advantage over flat washers.
Not had any major leaks since, infact none.
Gasket is home made using exhaust gasket material from speed shop and it's cut to suit the engine's port shape and sealed with Stag.
BoltsM.
Motor bikes have fins on the exhaust pipes at the header/port section.
It was also suggested at a car exhaust place, to try a heat sink principle.
The way it seems to work is, heat causes the plate on the HT's exhaust pipe
header to warp.
If that heat is transfered away, then it may reduced the tendency of warping.
The way I've done a test is remove the HT exhaust studs, replaced with longer allen key bolts, filled the slack with spring washers and the HT's nut.
Spring washers may be an advantage over flat washers.
Not had any major leaks since, infact none.
Gasket is home made using exhaust gasket material from speed shop and it's cut to suit the engine's port shape and sealed with Stag.
BoltsM.