So I swapped a 3.5L I5 into my toyota pickup and for the most part its all good but I keep blowing slave cylenders, the first one I thought it was becuase I accidently released the plastic restraining clips prior to install, the second one I installed perfectly and it still eventually blew out allthough I must say it seemed to take longer.
The setup goes like this:
jeep ax15 pressure kit (pressure plate disk and slave)
ax15 input shaft
ax15 bearing retainer (internal slave)
it all fits well and the clearances all work out, I needed to make a bushing to get the input shaft seated properly but that all apears to be in good shape.
At this point in time my leading ideas are the slave is over extending and I'd need to shim it a bit but this makes no sense as it's just barely contacting the pressrue plate like it should, I would try a slave for a 3.5L but I'm pretty sure it won't sit on the jeep bearing retainer.
Is there supposed to be a litle clearance betweent he throwout bearing and pressure plate or is there supposed to be a degree of contact and pressure? the way the jeep slave is atached (on a single pin with a retaining clip) would allow it to move around slightly when there is little or no pressure on the throwout bearing, maybe this is a cuase.
Second idea is the fluid (dot 3) is getting too hot and boiling in the slave, maybe ruining the seals, with all aluminum block there seems to be a lot of heat transfered to the bellhousing and trans, this clutch setup being for an older iron block engine may stay a bit cooler? Maybe upping it to dot 4 or 5 will keep the fluid from boiling.....
a 3rd idea is that my piolot beaing isn't quite in there right and some driveline vibrations are shaking the slave up too much and wrecking it somehow, this also sems unlikely as it runs smooth as eggs aside from some high speed vibrations I'm sure are the tires, any vibration in that area would be linked to engine speed anyway and not vehicle speed.
I guess i'm looking for advice and ideas since this setup has not been done, atleast not publicly, so thanks in advance for your time.