[94300ex]

my 300ex has an oil leak between the cam cover and the head and when i checked it out i found 3 bolts that hold the cam cover on were stripped out.:icon_cussing: could i use a helicoil kit to fix them or should i just replace the head? thanks in advance.

 

[ostrx250]

have you seen the thread repair that is an epoxy like jbweld sorta. it is at most autoparts stores just check the directions im pretty sure it cant be submerged in oil

 

[TRX2fiveO]

HElicoils are going to be the best bet but if I had to guess where the ones that are stripped Id say the are the ones with the copper washers

 

[94300ex]

HElicoils are going to be the best bet but if I had to guess where the ones that are stripped Id say the are the ones with the copper washers

your right moose, the ones that are stripped are the 2 bolts that go through the rocker arm pins on the left side and they have the washers on them. the other bolt is on the left front corner. i will look at the epoxy stuff that ostrx mentioned but id say the helicoils would be stronger. thanks for the help!

 

[Helmut]

I've used the thread repair epoxy, but I don't think it's recommended for use on something that gets as hot as the head.

 

[Exaviator]

The stuff that I have--made by Permatex--says that it will repair and hold in spark plug threads, so it must supposedly be suitable for that kind of heat. But I have not had much success with it at all. Best use helicoils and the job is done right. OTOH, in places where you can step up a bolt size-say from 7 mm to 8 mm, you could try to redrill to the proper size for an 8 mm tap and tap the hole to fit the 8 mm bolt.

 

[ostrx250]

i think that the helicoil will be an only option im pretty sure that the permatex is who makes it isnt any good in oily locations and it will not hold. i tried for a neighbor with a nissan when someone broke a pedistal mount

 

[94300ex]

thanks for the suggestions guys. i will get a helicoil kit ordered this week and see what i can do.

 

[Helmut]

I agree, the helicoil kits would be the way to go.