gearbox shimming
01 June 2008, 11:59 AM
#1
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gearbox shimming
does anyone know how to shim a ppg kit properly so that gear line up correctly
i have a syncro problem in third and fourth so going to change that but noticed gears dont line up too wel so decided to try to build it myself better
any help appreciated
gazza
i have a syncro problem in third and fourth so going to change that but noticed gears dont line up too wel so decided to try to build it myself better
any help appreciated
gazza
04 June 2008, 01:42 AM
#4
I been to 2 gearbox builders after I got a 5 speed PPG fitted in a TY754 geabox case.
You cannot shim each gear, just the pinion that allows the length of shift throw between 1,3 and 2, 4. And I think some other main shaft.
I get howl louder than expected since it's a helical syncro box.
And within 2000 miles it's very poor if changing reasonably quickly into 4th, and also into 2nd when cold. Very fast shifts e/g/ drag racing, I can beat the syncro's in 3rd and 4th .. which isn't good, even after changing oil to Mobil HDC ( which did improve matters. )
I am told the PPG gearset is not ideal on gear angle, and should have gone for a Possum Bourne gear kit for a few hundred more, almost factory like to drive.
You cannot shim each gear, just the pinion that allows the length of shift throw between 1,3 and 2, 4. And I think some other main shaft.
I get howl louder than expected since it's a helical syncro box.
And within 2000 miles it's very poor if changing reasonably quickly into 4th, and also into 2nd when cold. Very fast shifts e/g/ drag racing, I can beat the syncro's in 3rd and 4th .. which isn't good, even after changing oil to Mobil HDC ( which did improve matters. )
I am told the PPG gearset is not ideal on gear angle, and should have gone for a Possum Bourne gear kit for a few hundred more, almost factory like to drive.
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