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Rb20 Gearbox Input Shaft Play - Whats Tolerable?

jaik
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jaik Mentor

jaik

Posted
Posted (edited)

Folks,

I have a RP71C #1 gearbox and it was making all sorts of noises when in gear and clutch disengaged.

Ive taken it apart and there is alot of play in the input shaft. I could feel this when the casing was still on the gearing but now its even more apparant without the casing supporting the shaft. I originally thought it was the main input shaft bearing, but this appears to be smooth as silk.

Ive checked out this SDU thread and nabbed some of his pics. Here is what the gearbox looks like when apart - looking at the input shaft. I havent managed to pull mine apart to this extent yet, but i can move my input shaft in and out alot about 4-5mm - and nearly so the synchro comes out of its place, but also left to right, which is where my box is stuffed i reckon.

Can anyone confirm that this shaft should only have longdetudinal movement, and not latitudinal?

If so - could it be
thats stuffed or clapped out?

Thanks guys!

JK
Edited by jaik
turboedsloth Grand Master

turboedsloth

Posted
Posted (edited)

wats the condition of the inside of the input shaft where the bearing runs? has it gone throu the case hardening? 4-5mm sounds like a bit to much it should only be about .010" (.25mm) if that, just enough to let oil get throu. as for the side to side movement there shouldnt be any. also why is the synchro land off, did u have to press it off or did it just fall off?

Edited by turboedsloth

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