Subject: [Tigers] Rear Main Seal Question

From: Joe Brown via Tigers <[email-masked]>
Date: Tue, 22 Jan 2019 16:55:34 -0600

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Here is a question for you guys that are old hands at rebuilding engines.
I am putting my original 260 back together after it came back from the
machine shop and I am struggling a little bit with the two-piece rear main
seal that came with my FelPro gasket set.  The instructions say to insert
one half of the seal into the block with about 3/8" sticking up on one
side. This should result in the other side being about 3/8" below the edge
of the block.  The other half goes into the rear main cap with the same
offset so that it mates up with the half that is in the block.

My problem is that the two halves of the seal seem to be too long.  If I
insert one half so that 3/8" is sticking up on side it is only about .2"
down on the other side.  So I can't get the rear main cap to seat
correctly.  Is it common to have to trim the two halves so that they will
mate correctly?  Or should I just go buy another seal and hope it works
better?  (Thankfully I live just a few miles from a Summit Racing warehouse)

Thanks,
Joe Brown

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<div dir=3D"ltr">Here is a question for you guys that are old hands at rebu=
ilding engines.=C2=A0 I am putting my original 260 back together after it c=
ame back from the machine shop and I am struggling a little bit with the tw=
o-piece rear main seal that came with my FelPro gasket set.=C2=A0 The instr=
uctions say to insert one half of the seal into the block with about 3/8&qu=
ot; sticking up on one side. This should result in the other side being abo=
ut 3/8&quot; below the edge of the block.=C2=A0 The other half goes into th=
e rear main cap with the same offset so that it mates up with the half that=
 is in the block.<div><br></div><div style=3D"text-align:right">My problem =
is that the two halves of the seal seem to be too long.=C2=A0 If I insert o=
ne half so that 3/8&quot; is sticking up on side it is only about .2&quot; =
down on the other side.=C2=A0 So I can&#39;t get the rear main cap to seat =
correctly.=C2=A0 Is it common to have to trim the two halves so that they w=
ill mate correctly?=C2=A0 Or should I just go buy another seal and hope it =
works better?=C2=A0 (Thankfully I live just a few miles from a Summit Racin=
g warehouse)</div><div><br></div><div>Thanks,</div><div>Joe Brown</div></di=
v>

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