TR3a Rear suspension measures low

[pcwesthead]

Hello all, I read that the ride height measured at the sill should be 6 inches for a TR3a.  Mine was lower than this at about 4.5 inches.  I was changing the bushes anyway, so decided to replace the springs with Heritage standard springs.  Having done these jobs, the ride height is about the same, 4.5 to 5 inches.  Didn’t see any spacers on the car or in the Haynes manual.   Is that height wrong?  Any insights would be appreciated.  

[BlueTR3A-5EKT]

Just measured mine.
My tyres and wheels are standard 165/80x15 on TR6 5.5 wide rims. 

6“ bottom of outer sill to floor at the rear wing to quarter panel stone guard.  

7” bottom of front wing lower edge to floor.

My car has Regular rear leaf springs and Triumph Tune tall updated front coil springs.  I chose to raise the front of the car to stop the chassis being smashed by the lumps of tarmac the local council have added to the roads.

Peter W

Edited September 22, 2021 by BlueTR3A-5EKT

[stuart]

15 hours ago, pcwesthead said:

Hello all, I read that the ride height measured at the sill should be 6 inches for a TR3a.  Mine was lower than this at about 4.5 inches.  I was changing the bushes anyway, so decided to replace the springs with Heritage standard springs.  Having done these jobs, the ride height is about the same, 4.5 to 5 inches.  Didn’t see any spacers on the car or in the Haynes manual.   Is that height wrong?  Any insights would be appreciated.  

Do you have the correct rear shackles fitted? The solid axle 4a ones are longer.

Stuart.

[pcwesthead]

Thanks Peter and Stuart.  I found the old thread on this so looking at that also.  My shackles measure 2.5 inches between pins.  Which i believe is correct.