Re: Feckin Starter Motor
Posted: Wed Nov 15, 2017 8:21 am
I have a UK high torque light weight starter on my 3.2 in my 73T.
Been there 3 years, maybe more.
Bolted straight on and has never failed to work.
The car has the usual engine/body earth, not new, 10 years old but clean and corrosion free.
Cannot recall the make now, but the same as Andy Lightweight has used, maybe he can help as his recall is far better than mine.
Further, I have another make, now ceased production on my Porsche hill climb engine, 3.2/915, and that has worked perfectly for 6 years. It is a very different design to the usual ones (which Sladey's is) with a planet gear system, small in diameter. I hope the picture here might help.
When I bought the motor for my road 911T I was quizzed to the teeth on the pinion and the flywheel type. Seems at the time there was a bit of confusion in the industry of a 10 or 9 tooth, 3.2/915 or 3.2/G50. iirc, the 10 tooth is for the G50.
I have never had one of these high torque starters fail of either design.
Both have correct sized holes in their mounting flanges, no slots and simply bolt on just as the factory item does, thus the alignment of the starter gear is assured to the ring gear. Each design has a shoulder that is machined to sit in the counter bore in the box's bell housing, so even if slotted the starter is perfectly aligned for meshing. This feature is about 4mm deep.
I guess (note) that if the motor here in question has a slotted mount, then the location feature is not used. Why you need to change this alignment is a question, but I guess again it is to allow the same design to fit 915 and G50 bell housings? This may be back spacing the new started back 4mm (maybe 5mm) thus reducing the engagement of the pinion?
Good luck sorting it out, very frustrating and a really awkward job to do.
Been there 3 years, maybe more.
Bolted straight on and has never failed to work.
The car has the usual engine/body earth, not new, 10 years old but clean and corrosion free.
Cannot recall the make now, but the same as Andy Lightweight has used, maybe he can help as his recall is far better than mine.
Further, I have another make, now ceased production on my Porsche hill climb engine, 3.2/915, and that has worked perfectly for 6 years. It is a very different design to the usual ones (which Sladey's is) with a planet gear system, small in diameter. I hope the picture here might help.
When I bought the motor for my road 911T I was quizzed to the teeth on the pinion and the flywheel type. Seems at the time there was a bit of confusion in the industry of a 10 or 9 tooth, 3.2/915 or 3.2/G50. iirc, the 10 tooth is for the G50.
I have never had one of these high torque starters fail of either design.
Both have correct sized holes in their mounting flanges, no slots and simply bolt on just as the factory item does, thus the alignment of the starter gear is assured to the ring gear. Each design has a shoulder that is machined to sit in the counter bore in the box's bell housing, so even if slotted the starter is perfectly aligned for meshing. This feature is about 4mm deep.
I guess (note) that if the motor here in question has a slotted mount, then the location feature is not used. Why you need to change this alignment is a question, but I guess again it is to allow the same design to fit 915 and G50 bell housings? This may be back spacing the new started back 4mm (maybe 5mm) thus reducing the engagement of the pinion?
Good luck sorting it out, very frustrating and a really awkward job to do.