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12-28-2019, 06:03 PM | #1 |
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Join Date: Dec 2015
Posts: 541
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Front and rear seal replacement
Painting the 8BA in our 52 build with Bill hirsch engine enamel, really good stuff. We pulled the crank pulley to paint it and my assumption was correct and I am leaking oil at the front and from under the front seal sleeve. I did not seal that when I installed it. Planning on pulling the timing cover and oil pan to pull the crank gear and sleeve to seal correctly. While at it replace with a new front rope seal. Is there a way to replace the upper rear seal without undoing the rods and pulling the crankshaft?
JB |
12-28-2019, 09:37 PM | #2 |
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Join Date: Nov 2012
Location: Wichita KS
Posts: 16,132
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Re: Front and rear seal replacement
Yes, but it takes a little effort. You would have to a least loosen the main cap to get the pressure off of the seal. Then there is a tool to help remove and install the seal. Unless it has a serious leak I would not attempt it.
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12-28-2019, 10:23 PM | #3 |
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Join Date: Dec 2015
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Re: Front and rear seal replacement
Thank you sir. This was my first build so I missed some of the details such as sealant in key places. I also did not seal the upper seal retainer in the block. I have read that since it’s not sealed it might rotate out with a punch. That way I can replace the seal, and seal the retainer in the block. Think the juice is worth the squeeze? It’s not leaking bad but only has about 2 miles on it!
JB |
12-29-2019, 02:11 PM | #4 |
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Location: Kansas
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Re: Front and rear seal replacement
I think you can seal the front externally by cleaning up the area at the front of the seal sleeve and using rtv between it and the pulley. Can't see why that won't work,and it saves pulling the crank gear.
At the rear,yes I think I'd loosen all the main caps and rotate the seal and retainer out and replace them with proper sealer and new rope. I would definitely use a "BEST" brand "graphtite" rear rope seal. Far better in my opinion than the others. I just built an 8BA and it's bone dry on both ends after 500 miles. Terry
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"It don't take but country smarts to solve the problem" (Smokey Yunick) '41 Merc Town Sedan / 260" 8CM engine '66 Fairlane four door / "warmed up" 302 |
12-29-2019, 03:02 PM | #5 | |
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Re: Front and rear seal replacement
Quote:
JB |
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12-29-2019, 03:43 PM | #6 |
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Location: Kansas
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Re: Front and rear seal replacement
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Yes, the front needed the same trimming and same gasket lapping. I oiled the ropes before bolting the pan on. Terry
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"It don't take but country smarts to solve the problem" (Smokey Yunick) '41 Merc Town Sedan / 260" 8CM engine '66 Fairlane four door / "warmed up" 302 |
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