I don't think it's a drop in swap but I've never looked under to compare.
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An MX63 Sedan IRS would be an easy fit.
If you are in the US, this would be a better choice.
If you are in Australia (like me) then the MX63 was never sold here
I measured up a 1980 RA40 Celica and a 1983 MA61 Supra and found that they have the same chassis rails.
Since the MX73 has close enough to the same rear end as the MA61, there is a reasonable chance that the MX62 chassis rails are also compatible.
The IRS is mounted on a K-frame.
This K-frame is mounted to the chassis rails by 4 bolts.
Measure the positions of the bolts (including height) and see if the MX62 rails are close enough to these measurements so that you can drill 4 new holes to hold the K-frame.
You will also have to remove the panhard rod.
It will also probably involve a swap to rear disc brakes, which requires a change to the proportioning valve.
- Stepho
If you are in the US, this would be a better choice.
If you are in Australia (like me) then the MX63 was never sold here
I measured up a 1980 RA40 Celica and a 1983 MA61 Supra and found that they have the same chassis rails.
Since the MX73 has close enough to the same rear end as the MA61, there is a reasonable chance that the MX62 chassis rails are also compatible.
The IRS is mounted on a K-frame.
This K-frame is mounted to the chassis rails by 4 bolts.
Measure the positions of the bolts (including height) and see if the MX62 rails are close enough to these measurements so that you can drill 4 new holes to hold the K-frame.
You will also have to remove the panhard rod.
It will also probably involve a swap to rear disc brakes, which requires a change to the proportioning valve.
- Stepho
1 - 5 of 5 Posts
