G50/52 starter motor

[GT40Lee]

Forgive me for asking a question to do with GT40s here but hopefully someone out there can give me the answers I can't find elsewhere.
What I'm ideally looking for is an uprated starter motor for a 91 Turbo Porsche transmission - G50/52. Does such a beast exist - if so who makes it (Tilton don't)?
I know about converting the clutch back to the 89 version but I don't want to go that route.
Alternatively is there somewhere that can rebuild my starter motor to a higher spec?
I have a 96460410400 which I believe is off the Non Turbo motor. Can anyone tell me what the difference is between this and the Turbo starter 96560410400.
The reason I want an uprated starter is because I will be joining it to a high compression Ford V8.

[jschwartz]

I put a standard Bosch replacement one on my g50/52.
It's got a 11:1 LS6 engine, nearly 12,000 miles with no trouble at all.
jeff

[BigAl1]

Jeff,
Is this a standard Bosch replacement for the Porsche starter?

Allan

[ultimichael]

IMI High-Torque starters for example.
Bought mine (IMI-101-N) from Good Vibrations Motorsports.
www.goodvibesracing.com/IMI%20Performance%20Products.htm
As I switched to a G96 box I now cannot use it and would give it away.

Michael

[gt40lee]

Michael
Are you sure about the IMI 101 N. It doesn't appear to have the reach needed? I think the 101N is for the earlier clutch with the ring gear near the diff. The 91 Turbo has the ring gear near the engine - which is where I would prefer to leave it.
Lee

[slangley]

gt40lee

Have you spoken with Kennedy Engineering in California? This is what they do for a living. I have a 50/52 and they have been the best source for options based on my needs and configuration.

[andycanam]

Not sure if the G50 one is identical but there is a heavy duty porsche starter option for the 930.....
I have a second hand one but wanted a new one on my Ult but when I got it on the car it didn't turn as easily. Took it back and swaped it for the bigger one.

Worth checking into as it turned my High cr 383 chevy very easily.

[jschwartz]

I got mine from Kennedy, at the time there was no HD one available for the 50/52 without machining the transaxle. I checked with IMI also, but it was a coupole years ago. The std one works fine.
jeff s

[ultimichael]

Lee
you are right. If your ring gear is near the engine
the IMI-101-N will never reach it.
As I know most (or even all) Porsche starters are made by Bosch. If there is a Bosch number on your starter I can check my Bosch starter catalogue if it is listed.

Michael

[jschwartz]

I Can't check as the car's stored off site.
As i recall it was the standard starter listed in the bosch catalog for the 89-93 Turbo Porsche. I ordered from Kennedy thinking it was something special, It wasn't, could have got it locally and saved a few bucks.
jeff s

[GT40Lee]

I have found 2 starters which appear to fit. As I understand they are
96560410400 for the Turbo and
96460410400 for the Non-Turbo
I've been told (by Kennedy) that these 2 starters for the later box are identical. They spoke to Bosch who could not tell any difference between the two.
I think Bosch also use two different numbers for the rebuilt versions of each.
Kennedy are not aware of any other starters to fit this box with ring gear in standard position ...... but I'm still looking. I have another couple of leads.

[andycanam]

gt40lee said:

Michael The 91 Turbo has the ring gear near the engine Lee

Sorry missed that bit.... therefore the starter I had is unsuitable.

[ultimichael]

Lee
I found some infos in the Bosch catalogue:
96460410400, Bosch-Nr: 0 001 110 059 new, 0 986 016 250 exchange, used in Carreras and 993 Turbo.
96560410400, Bosch number 0 001 110 081 new, 0 986 016 250 exchange, used in 964 Turbo.
Only difference is an additional contact to connect to the ignition, but as they both have the same exchange number I think it was never used for whatever.
Both have 1,7 kW.
Another starter that can be used is from the 996 Turbo, GT2, GT3, 99660410700, Bosch number 0 001 115 011 new. As it is used at the boxes with cable gear shift its motor housing is 28 mm shorter. It also has
1,7 kW. All these starters need the gear ring near the engine and a counter bearing in the clutch housing.
Hope this helps.

Michael

[andycanam]

ultimichael said:

Lee Another starter that can be used is from the 996 Turbo, GT2, GT3, 99660410700, Bosch number 0 001 115 011 new. As it is used at the boxes with cable gear shift its motor housing is 28 mm shorter. It also has 1,7 kW. All these starters need the gear ring near the engine and a counter bearing in the clutch housing. Hope this helps. Michael

Thanks you've saved me having to do my homework for sourcing a starter of my GT3 box..... I'd already found that the normal starter was too long and that I'd need a shorter one but hadn't got round to looking into it..... Excellent

[ultimichael]

Andy,
glad that I could help.

Michael

[GT40Lee]

Thanks for the Bosch info. Very useful.
The only other option I've discovered is a Tilton starter with an unfinished shaft which can be cut, chamfered and hardened to suit.
I'll try one of the normal starters before going down that route.
Lee