Gasket replacements

huskilvr · Post by **huskilvr** » February 15, 2009, 2:39 am

Hi,

I'm ready to do the engine gaskets on my 66' and especially want to do cause I have a bad exhaust leak. I've heard changing can be a nightmare with old bolts being warped from heat. Anyone have some tips or advice before I tackle and open a can of worms?

Thanks for any advice!

don luster · Post by **don luster** » February 15, 2009, 8:20 am

It will depend upon which engine that you have. Some of the big blocks can be a real pain that requires days of preremoval techniques. First thing I like to do is to use the best penetrating oil and soak them for two-three days then use a six point socket to see if they come loose. If they dont want to come loose then I like to hit them a lick with a brass hammer or brass punch. apply more penetrating oil. Next I may use some heat and see if they will come out. NEVER JUST APPLY MORE TURNING TORQUE. You will get to drill them out and that a pain. I will then try by using my 3/8 drive air ratchet tuned down low. Be patient and they will come out. Force them and they will break off. I used to pride myself to be able to get them out without breaking them off. The garage would tell them be prepaired to leave the vehicle until we got them out or take it somewhere else. It was cheaper to stay for a few days than pull the heads of to drill them off. Some engine did not give you enought room to drill them off. If its the donute gasket where the manifold meets the exh pipe then I just use heat if it was safe and not burn something. Hope this helps. Don

BarnieTrk · Post by **BarnieTrk** » February 15, 2009, 8:24 am

huskilvr,

Some guys have good luck with only using sealant but I like to use a fiber gasket if possible. The condition of the two surfaces you are trying to seal are a big factor in that decision - usually the older the surfaces, the more chance of warpage and pitting and the need for a gasket.

Depending on your budget, you could consider using new replacement bolts and not mess around with the old bolts. You could also go with cadmium plated or even stainless steel bolts which would reduce or eliminate future corrosion. Some hardware stores may have them or you may have to order them in advance. As far as sealing, I've never had any problems as long as I got both sealing surfaces scraped clean of residual gasket material and any carbon & corrosion buildup.

I usually use some HI-TEMP sealer on gaskets where the surfaces have some pitting. Snug the bolts down evenly and then wait for a couple of hours or even over night before starting the engine to ensure you give the sealant a chance to cure.

Plan your work and work your plan - take your time and don't rush....
It works for me!

BarnieTrk

huskilvr · Post by **huskilvr** » February 15, 2009, 7:17 pm

Thanks guys! I really appreciate it. I'll take it slow!