Info wanted on output flanges for MT75 gearboxes
Posted: Wed Apr 18, 2012 6:49 pm
Hi
Can any owner out there (or non-owner if they know the answer) of a Spyder modded car fitted with a MT75 box clue me in on what's available in terms of gearbox output flanges. As far as I know there are 2 types only- a 3 lug type that takes a doughnut and a 6 bolt round one. I'm asking because I'm hoping that a small flange is also available- I'm looking for one of a size that will fit within the centre spine of the chassis. I know the 6 bolt one can be machined down to a 4 bolt one but ideally I'm looking for one small enough to spin within the opening of the centre spine (because the bellhousing in question that I'm considering using will place the flange at that point).
This issue has arisen because the measurements I've worked to pertain to the depth of a std Rocket to BDA bellhousing. A std one is 173-173.5 mm deep. Guess what- mine is clearly non std and is 184mm deep. The result is that the splines on the input shaft are 9mm too far away from the clutch disc. Result is the friction plate splines overhang the splines of the box. Swapping to a std depth bellhousing would obviously solve this problem but would result in the output flange of the box lining up quite nicely with the narrowest part of the chassis centre spine. A small output flange would solve the problem quite nicely leaving about 12-14mm space each side- hence my question.
Regards and thanks
John
Can any owner out there (or non-owner if they know the answer) of a Spyder modded car fitted with a MT75 box clue me in on what's available in terms of gearbox output flanges. As far as I know there are 2 types only- a 3 lug type that takes a doughnut and a 6 bolt round one. I'm asking because I'm hoping that a small flange is also available- I'm looking for one of a size that will fit within the centre spine of the chassis. I know the 6 bolt one can be machined down to a 4 bolt one but ideally I'm looking for one small enough to spin within the opening of the centre spine (because the bellhousing in question that I'm considering using will place the flange at that point).
This issue has arisen because the measurements I've worked to pertain to the depth of a std Rocket to BDA bellhousing. A std one is 173-173.5 mm deep. Guess what- mine is clearly non std and is 184mm deep. The result is that the splines on the input shaft are 9mm too far away from the clutch disc. Result is the friction plate splines overhang the splines of the box. Swapping to a std depth bellhousing would obviously solve this problem but would result in the output flange of the box lining up quite nicely with the narrowest part of the chassis centre spine. A small output flange would solve the problem quite nicely leaving about 12-14mm space each side- hence my question.
Regards and thanks
John