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NixVegaGT
Nicolas Wiederhold
Minneapolis, MN
(659 posts)

Registered:
10/16/2007 05:30AM

Main British Car:
'73 Vega GT 4.9L Rover/Buick Stroker

authors avatar
Rear Main Cap sealing.
Posted by: NixVegaGT
Date: December 15, 2008 12:31PM

Sealing the crossed slots in the rear main bearing cap on the late block. Do I just use high temp RTV there??


BlownMGB-V8
Jim Blackwood
9406 Gunpowder Rd., Florence, KY 41042
(5762 posts)

Registered:
10/23/2007 12:59PM

Main British Car:
1971 MGB Blown,Injected,Intercooled Buick 340/AA80E/JagIRS

authors avatar
Re: Rear Main Cap sealing.
Posted by: BlownMGB-V8
Date: December 15, 2008 04:20PM

I'd use "Right Stuff" Nick. It isn't like it's got to come back apart anytime soon.

Jim


spridget
bill green
Maine
(49 posts)

Registered:
03/22/2008 01:29PM

Main British Car:
3 1980 TR8, 1 TR7 2 Bugeye Sprite 1 MG midget TR8 3.5 and 5.0, Sprite 1098 and ?

Re: Rear Main Cap sealing.
Posted by: spridget
Date: December 15, 2008 04:27PM

NixVegaGT Wrote:
-------------------------------------------------------
> Sealing the crossed slots in the rear main bearing
> cap on the late block. Do I just use high temp RTV
> there??


Thats what we are doing on a 4.0 Stroker.


NixVegaGT
Nicolas Wiederhold
Minneapolis, MN
(659 posts)

Registered:
10/16/2007 05:30AM

Main British Car:
'73 Vega GT 4.9L Rover/Buick Stroker

authors avatar
Re: Rear Main Cap sealing.
Posted by: NixVegaGT
Date: December 16, 2008 08:27AM

This stuff?:

[www.permatex.com]

I think this might be what was in there before. It was blacků Hmmm. This is what I have:

[www.permatex.com]


BlownMGB-V8
Jim Blackwood
9406 Gunpowder Rd., Florence, KY 41042
(5762 posts)

Registered:
10/23/2007 12:59PM

Main British Car:
1971 MGB Blown,Injected,Intercooled Buick 340/AA80E/JagIRS

authors avatar
Re: Rear Main Cap sealing.
Posted by: BlownMGB-V8
Date: December 16, 2008 09:06AM

I buy the 2 pack with the caulking gun. About $20 and lasts a long time. Don't mess with the aerosol, it's got bubbles and the nozzle clogs and is hard to clean out. With the caulking gun you just squeeze out a nib before you put it away, pull that out next time and go. (unless you store it for months) I just flat guarantee you it'll out perform any rtv you can get your hands on. Doesn't mind oil either. No way you'd get me to use rtv inside an engine.

Jim


Moderator
Curtis Jacobson
Portland Oregon
(4411 posts)

Registered:
10/12/2007 02:16AM

Main British Car:
71 MGBGT, Buick 215

authors avatar
Re: Rear Main Cap sealing.
Posted by: Moderator
Date: December 16, 2008 11:13AM

I like "Right Stuff" in the caulking gun too. Seems to work very well. (I used it when I tore this stuff apart to change a rear main seal.) It's much easier to use than toothpaste-style tubes.


V8Tech
Shaun O'Donnell

(19 posts)

Registered:
01/12/2009 11:37AM

Main British Car:


Re: Rear Main Cap sealing.
Posted by: V8Tech
Date: January 13, 2009 05:21AM

Forgive me if I have missed something .. but why do you not just use the crucifix seals that LandRover supply .. I have never had a problem with them sealing?

Shaun



BlownMGB-V8
Jim Blackwood
9406 Gunpowder Rd., Florence, KY 41042
(5762 posts)

Registered:
10/23/2007 12:59PM

Main British Car:
1971 MGB Blown,Injected,Intercooled Buick 340/AA80E/JagIRS

authors avatar
Re: Rear Main Cap sealing.
Posted by: BlownMGB-V8
Date: January 13, 2009 08:26AM

Sounds like a good suggestion Shaun, I for one have never seen those, having only dealt with Buick and Olds blocks. Apparently that is yet another difference. Nick's engine is something of a hybrid I believe, with Buick heads and crank and a sleeved Rover block. I'd guess he has it together by now, and if he used the sealant we recommended he'll have no problems. But if not, it sounds like those seals would be a good idea.

Jim


V8Tech
Shaun O'Donnell

(19 posts)

Registered:
01/12/2009 11:37AM

Main British Car:


Re: Rear Main Cap sealing.
Posted by: V8Tech
Date: January 22, 2009 04:28AM

In case you still need some ... the LandRover part number is LUN000010 ...

Shaun


Grover
Mike Finn

(1 posts)

Registered:
04/05/2016 08:02AM

Main British Car:


Re: Rear Main Cap sealing.
Posted by: Grover
Date: April 05, 2016 08:10AM

Hello, first post...
I have a leak coming from the rear bearing block. I believe the cause is the crucifix seals.
The engine is in the vehicle and is running great. I'd rather not pull the engine to fix this small issue.
My question is, can I remove the rear bearing block and replace the two crucifix seals without disturbing the rear main seal nor the bearings?
This is for a Rover EFI 3.9L V8

Cheers...


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