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The mkiv Supra Owners Club

Gearbox spigot bearing bearing part number please


hodge

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Dude/Lee, do these need replacing when swapping the flywheel? The manual says they do but most mechanics I mentioned this swap to says it it's necesary.

 

Only because if you don't have a small internal puller it's a pain in proverbial to get out.

 

It's only a small roller bearing, and on some cars it's probably done in excess of 100k miles. For the sake of a couple of quid, I would change it.

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It can cause the end of the input shaft of the gearbox to wander a little, and put side loads onto the input shaft bearings.

Ryan had a lot of problems with the input shaft on his gearbox having a side load due to the pilot bearing being off-centre by 0.5mm due to some dodgy gearbox adaptor plates on his V8 project. It soon knackered the box up. When he got it so it was fully concentric, everything was sorted.

For sake of £20 that I think the bearing is, I would pop one in.

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Nah, not a chance.

 

The only way that could fail due to anything on that end is if the bearing is fitted, and it is being massively pre-loaded by the gearbox, but it would knacker the bearing waaaaaayyyyy before the crank seal ever went.

The crank is just far too big for any of that to realistically happen.

Edited by TLicense (see edit history)
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It can cause the end of the input shaft of the gearbox to wander a little, and put side loads onto the input shaft bearings.

Ryan had a lot of problems with the input shaft on his gearbox having a side load due to the pilot bearing being off-centre by 0.5mm due to some dodgy gearbox adaptor plates on his V8 project. It soon knackered the box up. When he got it so it was fully concentric, everything was sorted.

For sake of £20 that I think the bearing is, I would pop one in.

 

The cars only done 20 very careful miles Tony so I'm hoping it's survived.

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