sealing head bolts
hi,just wondering ,when reffiting head bolts in chevy block,what type of sealant should be used to stop coolant escaping. is regular threadlock ok?im thinking probly not
sorry ,think i posted this in the wrong place! |
I would suggest replacing all your head and exhaust manifold bolts while doing this. It will look good and you know your threads haven't stretched. A good bolt kit comes with thread locker already on them. AutoZone carries some good brands. I have not done it myself, but have heard older Chevy guys say a stainless bolt on the exhaust headers will keep from rusting and hold better. I just used good grade 8 bolts and washers that the local hardware store matched to my old ones.
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Here is part of the procedure covering reinstalation. If you can afford the new bolts get them, if not clean the threads on the bolts and run a tap through the holes in the block. I just use RTV on the threads and tighten according to specs.
Pushrods MUST be returned to their original locations.
Different types of head gaskets are available. If you are using a steel/asbestos composition gasket, do not use gasket sealer.
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thanks for that,especially the gm part number for the sealant!
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I recently changed the cyl. head bolt set to upgrades stainless steel. The kit I bought included stainless steel studs. And these studs do not rust out like the stock pieces and will save me the agony of removing snapped studs..
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HI There. I had the same on my 1995 Grand Cherokee. Had the dealers replace the pinion seal and it fixed the leak. 12 months later had a bad nasty sound like a wheel bering going. Went to a local garage (no jeep dealer) and he said that it sounded like when they replaced the pinion seal they put the rattle gun on the nut and over tightened it and put too much per-load on the pinion bearings. It is important that the right tension is applied to the nut.
Upon stripping the diff we found that this was the case, the dealer workshop had over tightened the pinion yoke nut. This has the same effect on the bearings as it would have on a set of wheel bearings being over tightened. So be carefull of getting the seal fitted by a guy who knows what he is doing. |
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