1976 351w Rear Main Oil Leak - Help
Printed From: CorrectCraftFan.com
Category: Repairs and Maintenance
Forum Name: Engine Repair
Forum Discription: Engine problems and solutions
URL: http://www.CorrectCraftFan.com/forum/forum_posts.asp?TID=36292
Printed Date: October-05-2024 at 6:31pm
Topic: 1976 351w Rear Main Oil Leak - Help
Posted By: sberard5
Subject: 1976 351w Rear Main Oil Leak - Help
Date Posted: June-09-2015 at 10:18pm
Bought a 76' Ski Nautique with a 351w that has sat for a few years. After a good compression test, and tune-up, carb rebuild and oil change, got her running like a top. Took it for a couple of rides and it runs amazing except for one problem.... The rear main leaks into the bilge.
It's not a show stopper but I don't want to pump bilge water into the lake and its a pain to clean up the bilge each ride. Also worried it'll get worse. With that said, wondering what I have for options to get me through the rest of the summer. I'll pull engine in fall and reseal it up over the winter but for now what can I do? Does anyone have any experience with oil leak sealers you add to the motor oil? I was also thinking of tightening the oil pan bolts. If you have any advice, shoot me a message. I'd appreciate it.
Thanks,
Steve
East Waterboro, ME
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Replies:
Posted By: SNobsessed
Date Posted: June-10-2015 at 10:30am
http://www.newpig.com/pig/US/pig-absorbent-mat-pad-in-dispenser-box-mat240?cm_mmc=R-_-key-_-B-_-PigAbszz1001&utm_source=bing&utm_medium=cpc&utm_campaign=..BING+%5bBRAND" rel="nofollow - +Pig+Absorbent+-+1001&utm_term=oil%20pig - Pig
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“Beer is proof that God loves us and wants us to be happy.”
Ben Franklin
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Posted By: halfnelly
Date Posted: June-10-2015 at 10:35am
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Sounds like you need a http://www.westmarine.com/buy/west-marine--two-quart-bilge-absorber-boom--244822" rel="nofollow - "bilge buoy" . Stick one in the bilge and it'll absorb the oil but not the water.
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Posted By: Gary S
Date Posted: June-10-2015 at 10:43am
Verify what block you have so you can start looking for a reverse rotation seal set now.
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http://www.correctcraftfan.com/diaries/details.asp?ID=1711&sort=&pagenum=1&yrstart=1966&yrend=1970" rel="nofollow - 69 Mustang HM SS
95 Nautique Super Sport
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Posted By: sberard5
Date Posted: June-13-2015 at 4:15pm
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So besides replacing the seal there's nothing I can do except replace? I can deal with a small leak, just worried about it getting worse
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Posted By: Gary S
Date Posted: June-13-2015 at 5:04pm
Unfortunately no. Your problem will be tracking down a seal,the 2 piece ones have been discontinued. You boat should have the 2 piece one but you never know if the block has been replaced. Mid 80's engines switched to a 1 piece seal
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http://www.correctcraftfan.com/diaries/details.asp?ID=1711&sort=&pagenum=1&yrstart=1966&yrend=1970" rel="nofollow - 69 Mustang HM SS
95 Nautique Super Sport
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Posted By: sberard5
Date Posted: June-15-2015 at 8:05pm
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I believe skidim sells what I need. Anyone had any luck with ordering 2 of the 2 piece seals?
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Posted By: TRBenj
Date Posted: June-15-2015 at 8:50pm
The 2-piece seals are not hard to find. They're not rotation specific so id hesitate paying a premium for one that says it is.
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Posted By: Gary S
Date Posted: June-15-2015 at 9:00pm
I know not to question your memory but I thought the 2 piece ones were n/a? Which are the ones you can't get any more? As to his crank being tricky I think it was someone else who needed one.
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http://www.correctcraftfan.com/diaries/details.asp?ID=1711&sort=&pagenum=1&yrstart=1966&yrend=1970" rel="nofollow - 69 Mustang HM SS
95 Nautique Super Sport
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Posted By: TRBenj
Date Posted: June-15-2015 at 9:29pm
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You're thinking of the RH 1-piece 302 seals that Reid had custom made.
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Posted By: Gary S
Date Posted: June-15-2015 at 10:24pm
Who knows Tim,I'm just glad I don't have to worry about it,nothing I have would need one!
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http://www.correctcraftfan.com/diaries/details.asp?ID=1711&sort=&pagenum=1&yrstart=1966&yrend=1970" rel="nofollow - 69 Mustang HM SS
95 Nautique Super Sport
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