Hi Guys,
I'm just playing with starter/ring gear placement at the moment prior to machining up a flywheel. I have a 930 ring gear and a Hi Torque reduction drive starter. This starter is for the Porsche models which have the ring gear a long way back from the engine, I want to run the gear in the forward position close to the engine. I understand there is no long nose reduction starter available so will have to use the Porsche (Bosch) heavy duty unit, which by most accounts is well up to the job although expensive.
As I cannot lay my hands easily on a longnose Porsche starter, I was hoping someone on this forum may have an old one lying around that they could roughly measure the distance from the mounting flange to the front of the pinion teeth. Thanks in advance.
That is one way to go. There is another, which has just dawned on me and which I would prefer, that is to mount the starter on the front of the adaptor plate under the motor near the normal Ford position. Of course that Porsche starter would then turn the engine the wrong way! I need to find a 'normal rotation' starter motor with a pinion compatible with the Porsche ring gear. The Porsche ring gear has very square teeth compared to most others I have seen. Has anyone been down this track before? How is the starter on a 928 mounted? Would something off a 928 turn the right way and have the right teeth? That being the case I would use a new Hi Torque 928 unit.
I'm hoping the Porsche experts on this forum can help me out.
Unfortunately here in NZ this is exotic stuff and most of it is pretty thin on the ground, so it's not that easy to just go and look at something to check it out. If I take a stab and order it from overseas and it's not right, time and distance is against me for returns! I think I'm already the proud owner of a redundant brand new Hi Torque Porsche starter motor, I don't want to make it two if I can help it!!
However I do see the 928 option as the best bet. Is anyone able to compare the tooth profiles of the 928 and the 930 or G50 ring gears? Also would someone able to measure the OD of a 928 ring gear in case thats an option too?
BTW I have done extensive searching and reading on this forum and elsewhere, before asking these questions.
Any help or info much appreciated.
Thanks.
I'm just playing with starter/ring gear placement at the moment prior to machining up a flywheel. I have a 930 ring gear and a Hi Torque reduction drive starter. This starter is for the Porsche models which have the ring gear a long way back from the engine, I want to run the gear in the forward position close to the engine. I understand there is no long nose reduction starter available so will have to use the Porsche (Bosch) heavy duty unit, which by most accounts is well up to the job although expensive.
As I cannot lay my hands easily on a longnose Porsche starter, I was hoping someone on this forum may have an old one lying around that they could roughly measure the distance from the mounting flange to the front of the pinion teeth. Thanks in advance.
That is one way to go. There is another, which has just dawned on me and which I would prefer, that is to mount the starter on the front of the adaptor plate under the motor near the normal Ford position. Of course that Porsche starter would then turn the engine the wrong way! I need to find a 'normal rotation' starter motor with a pinion compatible with the Porsche ring gear. The Porsche ring gear has very square teeth compared to most others I have seen. Has anyone been down this track before? How is the starter on a 928 mounted? Would something off a 928 turn the right way and have the right teeth? That being the case I would use a new Hi Torque 928 unit.
I'm hoping the Porsche experts on this forum can help me out.
Unfortunately here in NZ this is exotic stuff and most of it is pretty thin on the ground, so it's not that easy to just go and look at something to check it out. If I take a stab and order it from overseas and it's not right, time and distance is against me for returns! I think I'm already the proud owner of a redundant brand new Hi Torque Porsche starter motor, I don't want to make it two if I can help it!!
However I do see the 928 option as the best bet. Is anyone able to compare the tooth profiles of the 928 and the 930 or G50 ring gears? Also would someone able to measure the OD of a 928 ring gear in case thats an option too?
BTW I have done extensive searching and reading on this forum and elsewhere, before asking these questions.
Any help or info much appreciated.
Thanks.
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