Ok here is a fun one for you, customer removed his own gearbox when rebuilding his engine, was surprised to find the damage you can see in the pics, so he replaced the front gearbox section ( the new silver bit) when unfortunately the box was removed again ( another issue) he was disappointed to find the damage had occurred again, so hence we ended up with the task of finding the cause and the cure, so ok guys get guessing.

 

Will add more details / clues as we go on.

 

 

Jeff TT

 

 

 

 

 

 

after market clutch. (twin or triple disc possibly)

 

being larger its rubbing on the ally part?

or the friction disc was installed the wrong way around?

Whats that ring thing on the spline? must have something to do with the problem lol

Edited November 4, 201015 yr by groover

wrong pressure plate?

one thing, whats going on with the release bearing??!! heres mine its seems the bearing on yours is the wrong way around or something!!

Did a manual conversion and didn't fit the bush?

one thing, whats going on with the release bearing??!! heres mine its seems the bearing on yours is the wrong way around or something!!

 

or the wrong one all together... may be its the older z31 bearing?

Its a non turbo release bearing, and yes its an after market clutch.

 

Jeff

ok Jeff, a question

 

TT or NA Car?

bearing deffo looks the wrong way around!

ok Jeff, a question

 

TT or NA Car?

 

 

Twin Turbo

 

Jeff

bearing deffo looks the wrong way around!

 

Yes they do look horrid don`t they, we always use the twin turbo one even on non turbo because they look weak to us.

 

Jeff

jeff so your saying the brg is the right way around and is not damaged in any way!

jeff so your saying the brg is the right way around and is not damaged in any way!

 

Thats correct.

 

 

Jeff

Clue......lightweight flywheel fitted.

 

Jeff TT

gotta be something to do with the pressure plate id imagine

Clue......lightweight flywheel fitted.

 

Jeff TT

 

fly wheel too thick?

Thats correct.

 

 

Jeff

humm well im stumped as my one is nothing like that LOL.

 

 

 

I have a lightweight flywheel too... which one is it?

wrong flywheel bolts or spacer plate missing

fly wheel too thick?

 

 

Close...... another clue the clutch unit and flywheel had been fitted by a Nissan Skyline specialist.

 

Jeff

is it a combined clutch and flywheel kit? and the ally sleeve should have been shortened to accommodate it

skyline flywheel?

is it a combined clutch and flywheel kit? and the ally sleeve should have been shortened to accommodate it

 

BINGO!!!!!

 

Well done, the clutch unit is a rather special one often used on Skylines and comes with a shortened nose section, someone clearly forgot to fit it and so when the damage was later found the owner did not know this and replaced it again with a standard one.

 

The damage was been done when the gearbox was fitted, the owner later told us that when he fitted the box up he had to use long bolts in the bellhousing to pull it together!!! the clue something was wrong was there all of the time, oddly even when the Skyline specialist fitted it...tut tut!

 

Nice one hellraiser:clap:

 

Jeff

BINGO!!!!!

 

Well done, the clutch unit is a rather special one often used on Skylines and comes with a shortened nose section, someone clearly forgot to fit it and so when the damage was later found the owner did not know this and replaced it again with a standard one.

 

The damage was been done when the gearbox was fitted, the owner later told us that when he fitted the box up he had to use long bolts in the bellhousing to pull it together!!! the clue something was wrong was there all of the time, oddly even when the Skyline specialist fitted it...tut tut!

 

Nice one hellraiser:clap:

 

Jeff

got there in the end :):clap: