C2 Rear Main Seal GM10121044

[Jim V.]

Just picked up the GM flouroelastomer rear main seal and have a few comments/questions.

First, the package does NOT contain the little plastic shoe-horn. Is this only used on the neoprene seals or is it also recommended for the flouroelastomer unit as well?

Secondly, the supplied GM instruction sheet says to be careful to keep sealant off of the ends of the seal. Should sealer be applied to the mating ends of the flouroelastomer seal in addition to the bearing cap mating surface?

Lastly, is it a good idea to rotate the seal a few degrees (3/8 in) so the mating halves of the seal are offset from rear bearing cap mating line?

Thanks

[Jim R.]

Re: C2 Rear Main Seal GM10121044

It is a good idea to rotate the seal it will help prevent leaks.

[Bill S.]

Re: C2 Rear Main Seal GM10121044

Just did a rear main seal on a 68 here is the procedure:

http://www.corvettehacks.com/article5.html

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[John H.]

Re: C2 Rear Main Seal GM10121044

Bill -

The write-up is very specific about NOT getting any RTV on the seal split line, but the photo of the main cap shows RTV both on the cap mating surfaces AND on the ends of the seal?

[Bill S.]

Re: C2 Rear Main Seal Update

I corrected the procedure in the article. The picture of the sealer on the seal is correct (as per shop manual)
Bill




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[Paul L.]

Re: C2 Rear Main Seal Update

These instructions came with GM #31022667 for my 1979.