livewire
NAXJA Forum User
- Location
- Burbank CA
I am going to change my dads cracked exaust. What i need to know is do I need to use gaska cinch on the gasket when i put the new headers on? If there are any other tricks I should know please tell me.
5-90 said:And, make sure that you have the Belleville washers (the dish-looking ones) on all the bolts and nuts, since they help with clamp load spreading.
5-90 said:If you have to replace the studs at the ends and in the centre, I find it helpful to replace them with studs cut out of brass all-thread rod (which most hardware stores will have,) and that will be easier a little later. All holes are threaded 3/8"-16, cut the studs to about 2" long and the bolts are all 1-1/4" under the head. There are, I believe, either ten or eleven bolts and two or three studs (I've noted changes.)
5-90
In the dozens of threads I've read on replacing exhaust manifolds, everyone recommends Permatex copper RTV or spray. Since I know you have experience, have you gotten a look at an exhaust gasket coated with permatex copper after it's been on for a while?- does the RTV burn up at all?- I ask because I used some as a temporary seal on an outboard motor and it got all soft and seemed to lose its sealing properties after about an hour of running. -5-90 said:I also use RTV copper on the converter flange gasket - and DO NOT use any other sort of RTV on either one! Copper is the only one that won't burn out from the heat...
5-90
5-90 said:Using it alone to seal an exhaust wouldn't work - since there's nothing for it to bind to. However, having the gasket as a substrate works very well 5-90