Hello,
Does anyone have a good picture of how the Jag IRS ties into a hawk chassis.
I have a BRA with a jag rear end that was done a long time ago, I think I need to improve how it is attached to the chassis.
The car came with letters from BRA dated 1988 suggesting using a jag IRS is not a good idea.
thanks
Jag IRS into chassis
Re: Jag IRS into chassis
Hi,
Are these any good?
Are these any good?
Cheers, Clive.
(If I'm not here I'm in my workshop or on the golf course!)
(If I'm not here I'm in my workshop or on the golf course!)
Re: Jag IRS into chassis
I assume you also have a bracket that picks up the four bolts on the top of the diff casing. In the case of the Hawk that bracket is held at both the top front onto the chassis and underneath to take the shock of the spring loads.
Additionally a heavy piece of angle also takes some of the vertical load from the front pivots by being bolted up underneath the chassis. So its only the rear pivot points that are not supported.
Working from a pit I was able to slacken off all the bolts to shim the assembly without fear of the car dropping. I have since discovered I should have been shimming each part of the assembly. e.g. driveshafts for camber and pivots for toe in.
Peter C
Additionally a heavy piece of angle also takes some of the vertical load from the front pivots by being bolted up underneath the chassis. So its only the rear pivot points that are not supported.
Working from a pit I was able to slacken off all the bolts to shim the assembly without fear of the car dropping. I have since discovered I should have been shimming each part of the assembly. e.g. driveshafts for camber and pivots for toe in.
Peter C
Re: Jag IRS into chassis
Yes the four bolts at the top are picked up, then the rear lower bolts are picked up by a separate frame the runs down behind. I will add a load path to the front lower pick up direct to the chassis.peterc wrote: ↑Sun Sep 19, 2021 12:15 pm I assume you also have a bracket that picks up the four bolts on the top of the diff casing. In the case of the Hawk that bracket is held at both the top front onto the chassis and underneath to take the shock of the spring loads.
Additionally a heavy piece of angle also takes some of the vertical load from the front pivots by being bolted up underneath the chassis. So its only the rear pivot points that are not supported.
Working from a pit I was able to slacken off all the bolts to shim the assembly without fear of the car dropping. I have since discovered I should have been shimming each part of the assembly. e.g. driveshafts for camber and pivots for toe in.
Peter C