- Joined
- Apr 15, 2004
- Messages
- 1,616
Hi folks,
Once again I seek advice
I'm starting the reassembly of my 850 engine (look for a project report soon) and am wondering what to use for sealing those problem cylinder studs. There's the one at the base that sits directly over the cam, and those two studs near the pushrod tunnel at the top. The drilling for the base stud goes all the way through, and the drilling for one of the upper studs breaks through into the pushrod tunnel. So they have to be sealed.
I have a variety of fine Permatex products at my disposal, including:
red, blue, and green "loctite"
"high temperature automotive grade thread sealant"
copper high-temp RTV
good old #2 gasket dressing
I also have a tube of Threebond 1104 (like Yamabond). I have some Hylomar too, but I don't think it would be up to the job.
I was thinking of using the red loctite. It's rated to 300 degrees F. Is that good enough? I'm not sure how hot these areas get. And would the red loctite cause trouble if I ever have to remove the studs? The crankcase threads are all helicoiled at the factory.
thanks again,
Debby
Once again I seek advice
I'm starting the reassembly of my 850 engine (look for a project report soon) and am wondering what to use for sealing those problem cylinder studs. There's the one at the base that sits directly over the cam, and those two studs near the pushrod tunnel at the top. The drilling for the base stud goes all the way through, and the drilling for one of the upper studs breaks through into the pushrod tunnel. So they have to be sealed.
I have a variety of fine Permatex products at my disposal, including:
red, blue, and green "loctite"
"high temperature automotive grade thread sealant"
copper high-temp RTV
good old #2 gasket dressing
I also have a tube of Threebond 1104 (like Yamabond). I have some Hylomar too, but I don't think it would be up to the job.
I was thinking of using the red loctite. It's rated to 300 degrees F. Is that good enough? I'm not sure how hot these areas get. And would the red loctite cause trouble if I ever have to remove the studs? The crankcase threads are all helicoiled at the factory.
thanks again,
Debby