Triumph Sports Cars

engine swaps and other performance upgrades, plus "factory" V8s (Stag and TR8)

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Moderator
Curtis Jacobson
Portland Oregon
(4577 posts)

Registered:
10/12/2007 02:16AM

Main British Car:
71 MGBGT, Buick 215

authors avatar
Rear end identification
Posted by: Moderator
Date: October 18, 2012 03:38AM

Please have a look at this photo of a semi-famous vintage racecar:
http://www.britishracecar.com/BillHart-Triumph-TR250K/BillHart-Triumph-TR250K-DA.jpg

It's not one of my better photos... but you can see a battery on the left. An aluminum fuel tank, a fuel pump, and a pressure regulator are on the right. Hoses for brake cooling are on both sides. Underneath all that, you should see a modified Triumph TR-4A frame. (I expect it's extensively modified if not entirely new... but I'm told it's a "TR-4A frame". Who am I to argue?)

Here's my question: "From this photo, can you tell or even guess anything at all about the rear end?"


roverman
Art Gertz
Winchester, CA.
(3188 posts)

Registered:
04/24/2009 11:02AM

Main British Car:
74' Jensen Healy, 79 Huff. GT 1, 74 MGB Lotus 907,2L

Re: Rear end identification
Posted by: roverman
Date: October 18, 2012 11:08AM

IRS, DeDion, 3.577/1 ratio, with Laycock limited slip. If your going to guess, why hold back ? roverman.


Moderator
Curtis Jacobson
Portland Oregon
(4577 posts)

Registered:
10/12/2007 02:16AM

Main British Car:
71 MGBGT, Buick 215

authors avatar
Re: Rear end identification
Posted by: Moderator
Date: October 18, 2012 01:08PM

Clearly IRS.

Nissan differential? Lexus? BMW? Certainly not Triumph, right?
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MGBV8
Carl Floyd
Kingsport, TN
(4512 posts)

Registered:
10/23/2007 11:32PM

Main British Car:
1979 MGB Buick 215

authors avatar
Re: Rear end identification
Posted by: MGBV8
Date: October 20, 2012 11:03AM

What rear end? ;)

What little you can see looks like a stock TR4A frame, which was IRS from the factory. So whatever is a near bolt-in upgrade.

Apparently, some TR folks are using BMW & Nissan R200 diffs.

Where's Dan Blackwood when you need him? Probably off watching a Marshall football game....



Edited 1 time(s). Last edit at 10/20/2012 11:09AM by MGBV8.


mgb260
Jim Nichols
Sequim,WA
(2463 posts)

Registered:
02/29/2008 08:29PM

Main British Car:
1973 MGB roadster 260 Ford V8

Re: Rear end identification
Posted by: mgb260
Date: October 20, 2012 08:58PM

Looks like Richard Good's mounts. He uses a Nissan R200 in his kit. Calvin Grannis would know.



Edited 1 time(s). Last edit at 10/20/2012 08:59PM by mgb260.


MGBV8
Carl Floyd
Kingsport, TN
(4512 posts)

Registered:
10/23/2007 11:32PM

Main British Car:
1979 MGB Buick 215

authors avatar
Re: Rear end identification
Posted by: MGBV8
Date: October 21, 2012 09:13AM

More info:

[www.goodparts.com]

[tr6.danielsonfamily.org]


Dan B
Dan Blackwood
South Charleston, WV
(1007 posts)

Registered:
11/06/2007 01:55PM

Main British Car:
1966 TR4A, 1980 TR7 Multiport EFI MegaSquirt on the TR4A. Lexus V8 pl

authors avatar
Re: Rear end identification
Posted by: Dan B
Date: October 21, 2012 02:47PM

Could it be this? [forum.britishv8.org]

The mounting ears look stock to me.



Edited 1 time(s). Last edit at 10/22/2012 01:37PM by Dan B.



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