2 Piece Rear Main 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=51051
Printed Date: November-22-2024 at 9:15am
Topic: 2 Piece Rear Main Seal
Posted By: NeilMcG
Subject: 2 Piece Rear Main Seal
Date Posted: March-02-2023 at 3:57pm
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Still plugging away on the '78 Nautique. The replacement engine, a 1980 RH 351 will be ready for assembly soon. As this is a pre '83, it also requires a 2-piece rear main seal. After reading through some posts, it appears that seals specifically labled as RH may not be mandatory. However, I also gathered that it may not apply to all seals; they need to be a smooth ones, lest it guide oil outside the engine. Online research didn't produce much enlightenment, so if anyone has thoughts or advice on what to use, I'd greatly appreciate it. Thanks! |
Replies:
Posted By: KENO
Date Posted: March-02-2023 at 5:44pm
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A Felpro BS 40042 will work with either rotation, since the wick lines are in the crankshaft on the engines that use the 2 piece seal like your 1980 It's a smooth seal that "goes both ways"  Lots of other brands that will cross reference to the Felpro number too. Front seal for Reverse Rotation only is Felpro 17795
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Posted By: NeilMcG
Date Posted: March-02-2023 at 6:21pm
Thank you good Sir !
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KENO wrote:Posted By: NeilMcG
Date Posted: March-15-2023 at 8:48pm
I noticed on Felpro's front seal that it has a SKF part number on it (CR18562) same with Skidim. I can find this for 10 bucks online. I wonder if SKF is private labeling this for Fel Pro. " rel="nofollow - " rel="nofollow - " rel="nofollow - |
Posted By: KENO
Date Posted: March-16-2023 at 8:01am
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You'll find other names on Felpro oil seals too, like National for example. I think when it comes to oil seals Felpro is a "repackager"
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Posted By: Wilhelm Hertzog
Date Posted: March-16-2023 at 4:29pm
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I can confirm the SKF CR18562 seal works fine: https://www.correctcraftfan.com/forum/forum_posts.asp?TID=38164&title=351w-rr-seals ------------- 1982 Ski Nautique PCM351W RR II Velvet Drive 10-17-003 1:1 II PerfectPass Stargazer Do not go gentle into that good night. Rage, rage against the dying of the light. |
Posted By: MrMcD
Date Posted: March-17-2023 at 3:54am
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Fel Pro and National are owned by the same company. Today I think that is Apollo. Last year it was Tenneco, for 30 years prior it was Federal Mogul. Federal-Mogul was bought by Tenneco and Apollo bought out Tenneco. How the world turns. In the year 2000 Fel Pro manufactured 98% in house in Skokie IL. Carl Icahn owned Federal Mogul at the time and decided they should only make the Key Parts in house and farm out everything else. I still use many sets of the Fel Pro per year but it is sad to see a company broken apart like that in the name of corporate profits. Fel Pro still manufactures Millions of parts each year in house but the small misc parts are now farmed out. I would bet the in house number is still at least 65% and key parts like head gaskets are near 100% in house. ------------- |
Posted By: KENO
Date Posted: March-17-2023 at 7:43am
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So Neil...........after a small detour through the incestuous, inbred world of auto parts, you know the SKF seal will work based on Wilhelm's link it might make you wonder how a SKF seal gets repackaged by Felpro when they could have repackaged a seal from National. or why they repackage from both outfits when one (SKF) is not even a member of the same incestuous family. Myself, I don't really care as long as the part that I get works, wherever in the world it might have come from or who might or might not own the company |
Posted By: MrMcD
Date Posted: March-17-2023 at 2:05pm
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It has to do with production runs efficiency and annual demand. As parts slow down in sales companies make decisions to continue making the part or to source it. On slow selling parts it will gravitate to one company still making the part and the others just re box it. They tool up to make a part and that has costs involved. They may build 1,000 to 5,000 parts in a production run. Building less is just not efficient. 5,000 may be a 4 year supply so they sell to all the other vendors. The next step is they stop making them completely and they become un obtainable. This is common as parts hit the end of their run. Try and find parts for a Model A. I think we are years away from small block Ford parts going away but at some point it happens.
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Posted By: KENO
Date Posted: March-17-2023 at 5:41pm
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So Neil, it looks like you have a tough choice to make here. Since they're both readily available, would you rather buy the SKF seal at a pretty cheap price or buy the same SKF seal at 2 or 3 times the price from a "repackager" ? You're a banker, I think you'll probably make a good choice
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Posted By: NeilMcG
Date Posted: March-17-2023 at 6:01pm
Tell you one thing...if this canoe ends up leaking oil, I just hope I don't turn into Woody Hayes. |
Posted By: KENO
Date Posted: March-17-2023 at 6:30pm
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How about a quick recap of what's happening with this new engine so far?
You doing the work or is a shop doing it? Got all your other gaskets figured out or more questions to come?
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Posted By: NeilMcG
Date Posted: March-17-2023 at 11:07pm
I started a new thread. One thing I forgot to mention is difficulty in finding a builder once it's been machined. |