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hoffbug
Tony Hoffer
Minnesota
(323 posts)

Registered:
10/15/2007 05:25PM

Main British Car:
Olds 215 EFI

Head gaskets.. Buick 300 or Rover 4.6 bore size.
Posted by: hoffbug
Date: December 02, 2008 12:58PM

For those of you who have big bore 215 or Rover 4.6 based engines.. Im guessing a few have high compression..
Im wondering what you are using for head gaskets.. are there any aftermarket composite or MLS type gaskets available?


hoffbug
Tony Hoffer
Minnesota
(323 posts)

Registered:
10/15/2007 05:25PM

Main British Car:
Olds 215 EFI

Re: Head gaskets.. Buick 300 or Rover 4.6 bore size.
Posted by: hoffbug
Date: December 02, 2008 01:24PM

OK..
Cometic can make MLS for Rover 4.6 size.. $92 each.
anyone else?? The only other gasket I found for a Buick 300 was a basic felpro.. I think it was a stock type steel shim.



Edited 2 time(s). Last edit at 12/02/2008 01:40PM by hoffbug.


BlownMGB-V8
Jim Blackwood
9406 Gunpowder Rd., Florence, KY 41042
(6470 posts)

Registered:
10/23/2007 12:59PM

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

authors avatar
Re: Head gaskets.. Buick 300 or Rover 4.6 bore size.
Posted by: BlownMGB-V8
Date: December 02, 2008 02:54PM

hoffbug Wrote:
-------------------------------------------------------
> OK..
> Cometic can make MLS for Rover 4.6 size.. $92
> each.

Really? They wanted double that to make a set of 340 gaskets. Which is really the same thing except maybe a slight difference in bore size. So I o-ringed the deck and decided to re-use my copper head gaskets for the 215 after I punch out the bores.

Jim
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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
Re: Head gaskets.. Buick 300 or Rover 4.6 bore size.
Posted by: NixVegaGT
Date: December 04, 2008 11:59AM

I'm pretty sure I just ordered Buick 300 head gaskets from D&D. They seem to fit OK. I wonder how they will hold up to 11.5:1ish CR.


spridget
bill green
Maine
(68 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: Head gaskets.. Buick 300 or Rover 4.6 bore size.
Posted by: spridget
Date: December 15, 2008 04:41PM

I am in the final stages of a 4.0/Buick crankshaft stroker build. I decided to use the Rover composite gaskets. The decision was made because the fire ring on the Rover gasket covers the steel sleeve of the Rover 4.0 and the Buick 300 gasket does not. The rover gasket does extend into the chamber on the Buick 300 head but Woody at The Wedgeshop tells me he has used this setup for many years without problem. I was concerned using the buick gasket would not lock the sleeve into the block the way the Rover gasket would. Since the 4.0/4,6 blocks are prone to sleeve slip I didn.t want to take a chance


BlownMGB-V8
Jim Blackwood
9406 Gunpowder Rd., Florence, KY 41042
(6470 posts)

Registered:
10/23/2007 12:59PM

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

authors avatar
Re: Head gaskets.. Buick 300 or Rover 4.6 bore size.
Posted by: BlownMGB-V8
Date: December 16, 2008 09:11AM

Seems sensible to me. I decided to re-use my copper 215 gaskets so I had Dale o-ring the deck of my 340 block. Now I have to make a die to punch the bores in the gasket out to the right size but it's too cold right now to mess with it.

Jim


hoffbug
Tony Hoffer
Minnesota
(323 posts)

Registered:
10/15/2007 05:25PM

Main British Car:
Olds 215 EFI

Re: Head gaskets.. Buick 300 or Rover 4.6 bore size.
Posted by: hoffbug
Date: December 16, 2008 02:43PM

Thanks Bill
I am going to an aftermarket T-top sleeve... ( westwood).. so that wont be an issue with my block.



V8Tech
Shaun O'Donnell

(19 posts)

Registered:
01/12/2009 11:37AM

Main British Car:
Re: Head gaskets.. Buick 300 or Rover 4.6 bore size.
Posted by: V8Tech
Date: January 12, 2009 01:09PM

There are a few available .. we supply either 88, 95 or 97mm ... if memory serves they are around £35 ($60) a pair. If you need tin gaskets to get the right compression then the biggest bore size i know of is 94.04mm for standard 3.9 litre engine.
The t-liner will work with either version .. if you have 4.0/4.6 heads (10 bolt) then composites will give 9.35:1 and tins 10.3:1 on standard High Comp pistons .. if you have 3.5 / 3.9 heads (14 bolt) then you CR would be 8.6:1 on composites and 9.35:1 on tins.
I hope this helps.
Shaun


BlownMGB-V8
Jim Blackwood
9406 Gunpowder Rd., Florence, KY 41042
(6470 posts)

Registered:
10/23/2007 12:59PM

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

authors avatar
Re: Head gaskets.. Buick 300 or Rover 4.6 bore size.
Posted by: BlownMGB-V8
Date: January 12, 2009 02:16PM

I have a set of 215 copper head gaskets I can sell, they've been punched out to a 3.825" bore. Have been used once without o-rings so they're nice and flat. Should be annealed and cleaned with scotchbrite. Turned out they wouldn't work with the 340.

Jim



Edited 1 time(s). Last edit at 01/13/2009 06:24PM by BlownMGB-V8.


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