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Vibrated the gearbox...


evilscorp

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So it turns out ive messed up my gearbox output shaft collar or something, trying to search through the web to see if it can be lived with or the box is coming out for tear down.

Basically when I cut and shortened the 350z propshaft I only changed one of the bearings (they are staked and I wasnt sure if my replacement internal circlip mod would work) the diff U joint was a bit notchy but didn't think it would cause many problems... which bit me in the ass.

 

The sr20det motor is nearly solid mouted (japspeed poly mounts-rubbish) and the gearbox still used the oem 200sx bush which is a bit worn, then the diff is solid mounted.

 

This coupled with the bad u joint has caused the tail shaft of the gearbox to wiggle about during tunning. (the strange vibration we felt)

 

Now I couldn't slide the propshaft back into the gearbox (even though I left 1/2" approx for movement) ended up having to drop the diff at an angle to pull the prop off.

 

This is what I found (minus the destroyed black rubber seal- which needs a small puller or me grinding down a tool).

 

The collar thing around the output shaft is damaged and has a crack, bent areas.

 

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The actual shaft looks fine and the slip section on the prop has slight markings but nothing that can be felt with a finger.

 

Anyone know the part number or if its able to be cut down? Need to double check but I assume this part spins with the rest of the shaft and acts as a oil sheild for the splines.

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seal out, and damage doesn't look easy to sort/assess properly without the box being apart.

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sliming down a puller to fit the gap.

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removed and bashed off some folded over parts but its just too difficult to see down the sides. 

Gearbox is probably too big to slide out the car while its up on jack stands and I am not sure how easy it will be to remove the tail housing in situ.

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  • 6 months later...

Gearbox apart, just need to find out if the bearing has a part number as the two ive used are not correct. Also the bearing is more important than I thought and is oil fed from a gutter and has return grooves to spit oil back into the gearbox.

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Busted up bush removed, now just the hard task of finding out who made it in the first place 🤨 Worst case Zmanalex said he could save the day with his old rear housing or I just buff the worst of the damaged part away (two cylinders only the inner layer is fookkddd, it wont oil the same but its not an everyday car and I still have other teething problems to work out probably.

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