Rear Main seal area question

Tech tips and how to's

Moderators: notoptoy, garth, S Allen

User avatar
nismou20
Roadsteraholic
Posts: 1242
Joined: Thu Jul 07, 2005 2:16 pm
Location: Pasadena, Ca

Rear Main seal area question

Post by nismou20 » Sat Feb 23, 2019 4:33 pm

So I’m only familiar with later model L-series with rubber donut seals. This is my first rope seal install. Other than the 2-vertical side rubber inserts does the pillow block next to the crank bearing bolts need RTV? This is a U20. It’s just metal block to shelf. Thanks

baxtersit
Roadster Nut
Posts: 25
Joined: Wed Aug 03, 2016 3:05 pm
Location: North Olmsted, Ohio

Re: Rear Main seal area question

Post by baxtersit » Sat Feb 23, 2019 4:43 pm

Check my post on the Wiki but it was for an R. Not sure if they're the same.

User avatar
nismou20
Roadsteraholic
Posts: 1242
Joined: Thu Jul 07, 2005 2:16 pm
Location: Pasadena, Ca

Re: Rear Main seal area question

Post by nismou20 » Sat Feb 23, 2019 6:17 pm

Thanx it’s done.

User avatar
Gregs672000
Roadster Fanatic-Site Supporter
Posts: 6641
Joined: Fri Aug 07, 2009 11:47 pm
Location: Tacoma, WA

Re: Rear Main seal area question

Post by Gregs672000 » Sat Feb 23, 2019 6:22 pm

Not sure exactly what you're referring to, but as I recall maybe a little RTV on the rubber sides (?), but mainly just making sure the rope seal seats in well, cut flush to the top of the bearing cap, then install the crank and torque to spec. I don't recall using any RTV at all.
Greg Burrows
'67 2000 #588
Tacoma, WA

User avatar
nismou20
Roadsteraholic
Posts: 1242
Joined: Thu Jul 07, 2005 2:16 pm
Location: Pasadena, Ca

Re: Rear Main seal area question

Post by nismou20 » Sun Feb 24, 2019 1:46 pm

Again, it’s installed but the rope seal puts up a real fight when trying to turn the crank. The best I can describe the resistance is I can’t turn the crank by hand with just harmonic balancer on. I can turn it with just a wrench on just the crank bolt without balancer. Is this rather normal as it will free up some when driven?

User avatar
Linda
Roadster Enthusiast
Posts: 6960
Joined: Sat Nov 05, 2005 11:37 pm
Location: Los Angeles
Model: 1500/1600
Year: High Windshield-68-70

Re: Rear Main seal area question

Post by Linda » Sun Feb 24, 2019 4:13 pm

Mine was like that, and machinist said don't worry, after it starts it will settle in.
Linda
68 1600
Los Angeles, CA
Tech Wiki->Parts->Parts Interchange
Archives has it all

C.Costine
Roadster Nut-Site Supporter
Posts: 1078
Joined: Fri Feb 13, 2015 8:08 pm

Re: Rear Main seal area question

Post by C.Costine » Sun Feb 24, 2019 10:16 pm

nismou20 wrote:
Sun Feb 24, 2019 1:46 pm
Again, it’s installed but the rope seal puts up a real fight when trying to turn the crank. The best I can describe the resistance is I can’t turn the crank by hand with just harmonic balancer on. I can turn it with just a wrench on just the crank bolt without balancer. Is this rather normal as it will free up some when driven?

Try viewing a You tube video on installing the rear main seal in a Holden V8. I have installed a few rope seals and found this very informative.
located in Chester NH
1967 1600 in restoration
2013 Arctic Cat F-1100 turbo
Ford F-350 6.0
Ford 9000 puller, Ford 960 puller, Ford 901show, Ford 971 worker, Oliver 70 waiting its turn

User avatar
23yrRebuild
Roadster Fanatic-Site Supporter
Posts: 846
Joined: Sat Oct 25, 2003 2:19 pm

Re: Rear Main seal area question

Post by 23yrRebuild » Mon Feb 25, 2019 12:31 am

VERY informative video ! ...it makes me want to pull the engine and do the rear seal all over again, even though after 7,000 miles it doesn't seem to have any leaks from there, I did soak the rope seals in oil for a dew days, but I did not do the twisting and turning out of the package first, as they suggested...that seems like a good idea to help the seal soak in more oil....

however...I do have minor seepage everywhere else, ....oil pan, fuel pump to block, and oil filter holder to block gaskets....oddly, the cylinder head, valve cover, and timing cover are dry as a bone, though ...LOL, !
Mike - '67 Stroker / 5-Speed

User avatar
nismou20
Roadsteraholic
Posts: 1242
Joined: Thu Jul 07, 2005 2:16 pm
Location: Pasadena, Ca

Re: Rear Main seal area question

Post by nismou20 » Mon Feb 25, 2019 1:56 am

The assembly lube over the seals seems like a good idea to initially overcome resistance. I’d hate to put it all together to find that the starter doesn’t have enough oomph to turn the Flywheel over. That would be a nightmare!

Toptech360
Roadsteraholic
Posts: 676
Joined: Mon Oct 28, 2013 1:59 pm
Location: Bellingham, Washington

Re: Rear Main seal area question

Post by Toptech360 » Tue Feb 26, 2019 8:38 pm

nismou20 wrote:
Sun Feb 24, 2019 1:46 pm
Again, it’s installed but the rope seal puts up a real fight when trying to turn the crank. The best I can describe the resistance is I can’t turn the crank by hand with just harmonic balancer on. I can turn it with just a wrench on just the crank bolt without balancer. Is this rather normal as it will free up some when driven?
My experience was the same. It made me worried but had come to find it's pretty normal. All has been good for several years now.
Dan
1964 Datsun SPL310. The Datsun
1997 Toyota Tacoma LX 4wd. The Truck
2009 Subaru Forester XT.
2017 Toyota AWD Swagger Wagon.