Need a new starter - Hi-Torque or rebuilt Bosch?

[dustim04]

The high torque is worth the extra cost. Mine has never let me down.

[Tommy Z]

It's ordered and on it's way. Fingers crossed that I won't have too much trouble with the bolt above the tranny!

[brshap]

Originally Posted by Tommy Z

It's ordered and on it's way. Fingers crossed that I won't have too much trouble with the bolt above the tranny!

Take a pick and clean out the crud then tap the allen socket into the bolt head with a hammer to make sure it well seated.

[GH85Carrera]

If you have a 915 transmission the starter is not too bad to replace. Just have the car jacked up high enough for you to slide underneath. Put on some clothes that you don't mind getting really dirty. Slide under the transmission and give it a big hug like you love it. You can put your hand ring up on the bolt with ease. Just work by feel on the top bolt.

For the bottom bolt, you can see it and do it last. Of course disconnect the battery as the first step of the project.

If you have a G-50 transmission you have to do a partial engine drop. Lots more work involved.

[JSV798]

The problem in my experience is the solenoid; it takes a big current and the internal contacts burn, leading to no start when hot. Recently replaced the solenoid for £25 on my 1978SC and now the starter works great, even when hot. Of course when you buy a new starter it comes with a new solenoid so the problem has been masked. The starter on my car is now 42 years old. There must be a lot of perfectly good starter motors out there that just need a new solenoid! I wonder how long the high torque starters last; any one beat 42 years and counting?

[GH85Carrera]

Originally Posted by JSV798

The problem in my experience is the solenoid; it takes a big current and the internal contacts burn, leading to no start when hot. Recently replaced the solenoid for £25 on my 1978SC and now the starter works great, even when hot. Of course when you buy a new starter it comes with a new solenoid so the problem has been masked. The starter on my car is now 42 years old. There must be a lot of perfectly good starter motors out there that just need a new solenoid! I wonder how long the high torque starters last; any one beat 42 years and counting?

I have had my high torque one for only 8 or 9 years. Lots of miles and long trips, but a long way from 40+ years. My Bosch starters worked fine in local driving even when hot. Trips down R-66 for several hours in August were no issue. It just stopped working after a long 8 hour or longer trip. It will cause one to make up new curse words on the spot when all you want to do is get to the room at the hotel and unload the car but it refuses to start at the front door of the hotel.

[sus911]

I'm no auto electrician and rebuilding the Bosch isn't too difficult.

[88911coupe]

FYI on the hi torque unit, it may need to be "reclocked" to get it to fit. Mine did and when you see it you'll know what I mean. There are several threads if you do a search for issues installing the HT unit. Search "recheck" or issues installing hi torque starter. It will depend on how it's bolted together when shipped but changing it is a piece of cake. I've been reading for years the rebuilt Bosch units are poorly done and I can attest to that fact.

[Sabai]

Got a rebuilt Bosch unit after the original failed however the car is now experiencing the no-start heat soak issue mentioned in this thread.

Installing a hi-torque WOSP unit on a G50 car today..will provide an update after the swap..

[Ian Comerford]

I think Wosp are good quality units using well known parts from Denso etc. If you want very low weight and competition quality go for Brise. https://brise.co.uk/Porsche-7633091AXGAC.html

[Ian Comerford]

This is the Brise against my old one.

[jac1976]

Originally Posted by brshap

Take a pick and clean out the crud then tap the allen socket into the bolt head with a hammer to make sure it well seated.

This. I also filed down the head of a cheap Allen key so the edges were no longer chamfered. The socket head on the bolt was so shallow, I felt this approach gave more points of contact within the bolt head.

[jbahrami]

I put the hi-torque starter start on my 911SC. Startups seem to be improved and it weighs less.

If I recall there is a wire from the cold start injector that gets connected to the yellow starter trigger wire. On the Bosche, there was a connector for this already, but not on the hi-torque starter, so you will need to ensure they are connected. This is what engages the cold start injector to spray while you are cranking the motor.

I ended up wiring the cold start injector to a button on the dash to avoid flooding the airbox with fuel while cranking. This is what happens when the motor is cold and reluctant to start. Fuel accumulates in the intake and sometimes explodes. For this reason, I opted to not install the airbox pop-off.

I also rarely use the cold start injector after installing the new starter. The higher cranking speed seems to help.

As for the starter itself, I believe it is a Denso (Toyota) starter which are typically very reliable.

Hope this helps!

[Jeff Alton]

Have had good luck with the high torque starters. Also, note that rebuild Bosch Starters/Alternators etc are not what they used to be, actually, they can be crap. Most of their NEW parts have a lifetime warranty.

You could also get your starter rebuild locally I am sure.

Cheers

[Sabai]

Happy to report that all went well. The gear is correct and the flange was only 1mm thinner than original - no stacked washers needed. We did have to reindex the unit one notch over (counter-clockwise).

The unit also came with a cable to extend/adapt the yellow ignition wire which was nice.




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[Tommy Z]

Mine went well too, all though it is a bit of a PITA. That top barrel nut is a bear to get to. The WOSP unit came with this extension wire that I used to piggy back the two yellow wires into. Thing sounds great at start up and turns over lickity split now!

[7783911]

tommy, which HT starter is that?

[Tommy Z]

Originally Posted by 7783911

tommy, which HT starter is that?

7783991

It's the WOSP from our host. Link below. Cheers!

https://www.pelicanparts.com/More_Info/WSPLMS1102.htm?pn=WSP-LMS1102&SVSVSI=792&fs=0

[mike fitz]

I have had my high tech starter for three years now works great

[mike fitz]

Oops sorry was never any good at uploading pictures