Am looking at doing the brake booster conversion. Most of the articles I’ve seen have mentioned the Series III booster. I’ve got both series I and Series II boosters hanging about - will either of these work for the conversion or are we locked in to Series III? Could another model car work - any suggestions? Or a universal one?
Just some extra info for anyone looking:
SI boosters seem to have the bolts in a different location to the SIII - the SI have a bit more space between them. Most of the gaskets and images of the conversion I’ve seen online are of the SIII with the smaller gap.
We have a few SI and SII boosters lying around, and only one SIII which is in use in a '75 XJ6. We’ve found the the rod can be taken out of the SIII and put in a SI booster which will now fit in an XJ40.
Just found this thread which mentions other vehicle boosters being used: