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Thorley Header leaking at manifold [message #100992] Sat, 25 September 2010 19:30 Go to previous message
Jon payne is currently offline  Jon payne   United States
Messages: 495
Registered: May 2008
Karma:
Senior Member
Hi all,

Hope those who are at Duquoin are having a great time! Wish I was able to attend.

My RH Thorley is leaking at the forward tube. When I installed the headers I used Remflex gaskets. When I received the gaskets they were damaged on one end but only at the bolt hole. I was told it would be okay and I agreed. Well 1200 miles later it started to leak. So today I removed the bolts and pulled the header far enough back to remove the gasket. Sure enough I could see evidence of a leak at the damaged gasket end. No problem I will install the Thorley gasket that came with the headers. The old gasket came off cleanly on the header side but left some gasket material on the head.I was able to clean off the gasket material easily with out removing the header. After cleaning I installed the new gasket, torqued the bolts to 45 lbft leaving the center bolt hand tight.

I then fired it up and to my dismay I still have a leak and it sounds like it is still at the forward tube. There is no external evidence of a leak that I can see and I can't feel any exhaust when I "carefully" feel around the flange while running.

My next step is to remove and inspect the header. Has anyone with Thorley's had a similar experience? Any suggestions?

ALSO when I remove the header I'll need to replace the collector gasket. Does anyone know if you can buy these collector/doughnut gaskets locally?

Jon


Jon Payne
76 Palm Beach
Westfield,IN
 
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