302 Reverse Rotation Rear Seal
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=47398
Printed Date: May-02-2024 at 3:58am
Topic: 302 Reverse Rotation Rear Seal
Posted By: TwoPalms
Subject: 302 Reverse Rotation Rear Seal
Date Posted: April-30-2019 at 7:47pm
Hey Guys, New to the Forum and CCs.
I recently purchased a 1980 Tique in remarkable condition, previous owner was up front about the "common" rear seal leak that the 302 seems to have, it just seems to be a bit more than I was expecting. I am typically going through a quart about every 3 hours of run time at an average of 20-25 MPH cruising speed. again, to me, this seems like a lot, and I'm just wanting to know if this is considered normal for an engine that has roughly 100 hours on a ten year old rebuild, is there anything I can do to lessen this, like additives, or different oil, or am I just going to have to pull the motor and tear it down to replace the seal? The previous owner was running Valvoline standard 10W40, I have only had the boat a few weeks and have continued with that oil so far, while getting to know the boat. I have read a fair amount of debate about the different oils and was planning to make a decision on the new oil I would run as I got closer to my first oil change.
FYI, I do have a catch pan under the rear seal with oil diapers in it, so I am not creating an ecological disaster.
Sorry the post is a bit long, just wanted to get the relevant info in up front.
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Replies:
Posted By: 8122pbrainard
Date Posted: April-30-2019 at 9:00pm
Derek,
Welcome to CCfan.
I feel you will need to replace the seal as there really isn't any additive that will completely cure the problem.
Regarding oil, do look into one that has proper ZDDP levels to prevent damage to your flat tappet engine.
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/diaries/details.asp?ID=1622" rel="nofollow -
54 Atom
/diaries/details.asp?ID=2179" rel="nofollow - 77 Tique
64 X55 Dunphy
Keep it original, Pete
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