TR6 Differences in Chassis on 67 TR4A and 73 TR6?

[karls59tr]

Are there any differences or are they basically the same? Karl

 

[justin_mercier]

The transmission mounts changed from being up closer to the front to being in the rear with the bridge in 73. I dont know any other changes offhand.

 

[karls59tr]

I wonder how difficult or practical it would be to relocate the motor mounts?

 

[Marvin Gruber]

Its been done, I bought a TR4a years ago with a TR250 engine in it. I was surprised when I lifted the hood and saw that 6 cyl in there. You should be able to measure and weld.

Marv

 

[trrdster2000]

Oh, and the '73 should have the uprated front support bracing for the A arms.

Wayne

 

[HerronScott]

I thought I recalled a thread about this a while back. In addition to the engine mounts, I believe the radiator and steering rack mounts would be different.

Scott

 

[glemon]

I think Scott is right, I beleive they had to move everything forward a bit because of the longer motor.

 

[DanB]

The front of the frame where the engine sits is wider on a TR6.

 

[HerronScott]

The front of the frame where the engine sits is wider on a TR6.

Dan,

The TR4A and TR6 workshop manuals show the same dimensions for the frame so I don't believe there is any difference in that area (dimensions 1, 2, 3, 4 and 5 in both drawings). Dimensions drawings show the rack mounting moved forward and a slight change in the front body mounting area.

Scott