BenLewisMAV
Active member
- Joined
- Feb 10, 2018
- Messages
- 78
It'd be interesting to have a j-auto one to see.... I assume your in the bearing trade or similar it'd be good to get some of the old minatour racing /atomicrex bearings.... They seem to have the correct o.d. and just use some washers to offset the centre and a middle spindle spacer, http://www.fduk.org/forum/showpost.php?p=289122&postcount=159
Did you make any more housings?
Not in the bearing trade fella, I'm a senior design engineer working on the Dyson electric vehicle project , I've spent the past few years designing and prototyping our first electric powertrain so am used to searching around for all kinds of parts/materials/technology/etc, applying or adapting them to solve problems so we can prototype stuff quickly. Can come in handy when messing around with obscure aging Japanese sports cars..
..Funny you should mention the AtomicRex/Minotaur bushes, I'd forgotten they are different from the J Auto ones. I remember I was looking into these a few years ago. Actually I did find some that looked very likely to be the same part, although the load ratings weren't particularly high (perhaps explaining the early failures!).
- They were most likely to be GXSW-M20 or equivalent (<that is the plated steel version, a stainless-steel version is also available: GXSW-M20-SS for x4 the price, although the load rating is seemingly the same, just maybe improved corrosion resistance).

- Perhaps the same thing ^ with a slightly different part no. GXSW20 from a UK supplier.
There are a few other bearings I believe that work could in it's place if thicker shims were used (all with similar load ratings);
According to the FDUK link in Markr's previous post, the shims provided in the AtomicRex kit are a total of 4mm thick (2 x 2mm), this is why I believe the first bearing I mentioned (GXSW-M20) is the most likely candidate; the outer race (the bit that gets pressed into the suspension arm, shown as dimension 'H' on the attached image) on the stock Mazda Pillowball is 22-22.5mm thick, the GXSW-M20 is 18mm thick in this area.. 18 + 4mm...
That's the reason that you need more shims for the 2nd set of bearings I listed, as they are typically around 15-16mm thick..