Rear Main seal area question

Tech tips and how to's

Moderators: notoptoy, S Allen, Solex68

Post Reply
User avatar
nismou20
Roadsteraholic
Posts: 1485
Joined: Thu Jul 07, 2005 2:16 pm
Location: Pasadena, Ca

Rear Main seal area question

Post by nismou20 »

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
2004 Chevy Tracker
2010 RAV4
1969 Datsun Roadster
2005 Lotus Elise
1995 Toyota Tercel (Poormans Corolla)
2001 Fleetwood Jamboree RV
baxtersit
Roadster Nut
Posts: 68
Joined: Wed Aug 03, 2016 3:05 pm
Location: North Olmsted, Ohio
Model: 2000
Year: Low Windshield-64-67.5
Contact:

Re: Rear Main seal area question

Post by baxtersit »

Check my post on the Wiki but it was for an R. Not sure if they're the same.
2019 VW Allroad 6 sp
1966 Datsun Roadster stroker
1966 Alfa Romeo Giulia 1300TI
2021 Ducati 950S
1883 Honda VF750F Interceptor
User avatar
nismou20
Roadsteraholic
Posts: 1485
Joined: Thu Jul 07, 2005 2:16 pm
Location: Pasadena, Ca

Re: Rear Main seal area question

Post by nismou20 »

Thanx it’s done.
2004 Chevy Tracker
2010 RAV4
1969 Datsun Roadster
2005 Lotus Elise
1995 Toyota Tercel (Poormans Corolla)
2001 Fleetwood Jamboree RV
User avatar
Gregs672000
Roadster Fanatic-Site Supporter
Posts: 8923
Joined: Fri Aug 07, 2009 11:47 pm
Location: Tacoma, WA

Re: Rear Main seal area question

Post by Gregs672000 »

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: 1485
Joined: Thu Jul 07, 2005 2:16 pm
Location: Pasadena, Ca

Re: Rear Main seal area question

Post by nismou20 »

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?
2004 Chevy Tracker
2010 RAV4
1969 Datsun Roadster
2005 Lotus Elise
1995 Toyota Tercel (Poormans Corolla)
2001 Fleetwood Jamboree RV
User avatar
Linda
Fraternal Den Mother-RIP
Posts: 7807
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 »

Mine was like that, and machinist said don't worry, after it starts it will settle in.
Linda
Sadly-Linda has passed away 2022. She was the 311's den mother and drove the first Rare-Parts ball joint project. RIP.
C.Costine
Roadster Nut-Site Supporter
Posts: 1731
Joined: Fri Feb 13, 2015 8:08 pm

Re: Rear Main seal area question

Post by C.Costine »

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: 1067
Joined: Sat Oct 25, 2003 2:19 pm
Location: 3rd rock from the sun
Model: 1500/1600
Year: Low Windshield-64-67.5

Re: Rear Main seal area question

Post by 23yrRebuild »

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: 1485
Joined: Thu Jul 07, 2005 2:16 pm
Location: Pasadena, Ca

Re: Rear Main seal area question

Post by nismou20 »

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!
2004 Chevy Tracker
2010 RAV4
1969 Datsun Roadster
2005 Lotus Elise
1995 Toyota Tercel (Poormans Corolla)
2001 Fleetwood Jamboree RV
Toptech360
Roadsteraholic
Posts: 661
Joined: Mon Oct 28, 2013 1:59 pm
Location: Bellingham, Washington

Re: Rear Main seal area question

Post by Toptech360 »

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.
Post Reply