Rear engine seal

[bjudd]

Thank you for the feedback.

[doitwright]

I would be interested to hear what experts believe is the best way to prepare the front and rear crank seals when doing a replacement. Is it true that front seals are prone to leaking more than rear seals? Are new seals made from a more advanced composition to reduce wear?

[wwheeler]

I do know with the front seal that there are MANY versions and materials. The last one that I received from the Classic Center was a light brown color and had a three letters that indicated it was molded with a high temperature and chemically resistant Fluoroelastomer. Viton is DuPont's trade name for that and most recognize that. Probably about as good as you are going to get and superior to the original Buna-N or (Nitrile) material.

There are also a couple of tricks like replacing the crankshaft sleeve and using sealant on the end of that where it mates with the crank gear. These can help ensure a leak free installation. Others that are experienced with this can elaborate.