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> So what’s the thinking on 915 gearbox kits for a/6 build these days
Tdskip
post Oct 7 2021, 12:21 PM
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I’ve had a chance to go through some very useful past discussions, but as always win a couple years has gone by it’s worthwhile to revisit this topic The latest thinking and experiences. Looks like there’s a trade off between buying a pre-packaged kit versus trying to roll it all yourself, while expensive having someone else have done the brain damage does have a certain appeal to it.

Any thoughts or coaching out there on this?

I’m assuming if you go the route of a kit do you want to have the kit in hand when the gearbox servicing and flip is done, yes?

Thanks!

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Tdskip
post Oct 7 2021, 12:29 PM
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Tdskip
post Oct 10 2021, 07:49 AM
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Is the Bug@5-Speed still the go to?
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mepstein
post Oct 10 2021, 08:03 AM
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QUOTE(Tdskip @ Oct 10 2021, 09:49 AM) *

Is the Bug@5-Speed still the go to?

They are the only one making a kit to convert a 915 to mid engine use.
I do still have my wevo converted 915 for sale.
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rgalla9146
post Oct 10 2021, 09:42 AM
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I'm in the process.
I have a Martin Bott (Bug@5speed) 916 set-up in hand for years now. I'm using an early mag case
and mechanical speedo drive
I refreshed the shafts, flipped the diff. and assembled it temporarily years ago.
I don't have the factory tools for drag and backlash on the pinion.
Rather than take any chances I recently sent that work to a friend who has the tools
and experience. I should have it back by the end of the month.
THEN .....I can finally install it behind the long anticipated 3.0 in my GT project.
By the time this is over it'll be a very expensive item. That is with me buying the
trans, doing the cleaning, buying all the parts, drilling and tapping for an internal
shaft support, assembling it and fabricating shift linkage.
Try finding a '72 911 shift tower. Or OEM shift knob. Not easy.
My goal is for it to look and work as close to original as I can make it.
Next spring.
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mepstein
post Oct 10 2021, 10:51 AM
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QUOTE(rgalla9146 @ Oct 10 2021, 11:42 AM) *

I'm in the process.
I have a Martin Bott (Bug@5speed) 916 set-up in hand for years now. I'm using an early mag case
and mechanical speedo drive
I refreshed the shafts, flipped the diff. and assembled it temporarily years ago.
I don't have the factory tools for drag and backlash on the pinion.
Rather than take any chances I recently sent that work to a friend who has the tools
and experience. I should have it back by the end of the month.
THEN .....I can finally install it behind the long anticipated 3.0 in my GT project.
By the time this is over it'll be a very expensive item. That is with me buying the
trans, doing the cleaning, buying all the parts, drilling and tapping for an internal
shaft support, assembling it and fabricating shift linkage.
Try finding a '72 911 shift tower. Or OEM shift knob. Not easy.
My goal is for it to look and work as close to original as I can make it.
Next spring.

We just purchased the factory R&P tools.
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Tdskip
post Oct 10 2021, 03:42 PM
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First of all I hope everybody’s having a good weekend. Thank you for the responses.

I thought that I had seen Patrick motorsports offering these, but I think that cost was similar to the vendor in Germany, and it seems like the vendor in Germany is well regarded and has stood by their work.

I’m expecting us to run about $10,000 all in, it seems like that’s close to where you’re going to be.
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Steve
post Oct 10 2021, 04:05 PM
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I’ve been running the Martin Bott kit for years. Unless a shop has built one before, I wouldn’t trust them. Two well known shops in so cal, couldn’t figure it out. I ended up driving my car to PMS and flew back, so they could work on it. The trans now shifts like it’s supposed too. I’m also running PMS shift linkage and a 911 rennshift. If your going to the WCR, I will be there with my car and you can go for a ride.
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Steve
post Oct 10 2021, 04:10 PM
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PMS also sells the kit. I don’t know if it’s any cheaper buying it direct from Martin. Personally I would ship the trans and kit to PMS and let them build it or buy the kit from PMS. As mentioned wevo stopped selling there kit, so the 916 kit is the only option out there and Martins is the cheapest.
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Luke M
post Oct 10 2021, 05:28 PM
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I have a 84 815 trans with the Bott kit installed. I also had a Wavetrac diff installed while at it. I went back n forth with Steve on his Bott 915 trans. I then went with his recommendation to use PMS. PMS did all of the trans work and I also got all of their shift linkage. Not cheap by any means.

http://www.914world.com/bbs2/index.php?sho...67624&st=40
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930cabman
post Oct 10 2021, 05:39 PM
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Has anyone tried a G50?
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mepstein
post Oct 10 2021, 06:11 PM
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QUOTE(930cabman @ Oct 10 2021, 07:39 PM) *

Has anyone tried a G50?

They can’t easily be reversed for mid engine use.
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sixnotfour
post Oct 10 2021, 06:27 PM
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Just had CMS do a 915 ring and pinion setup..plus parts...and diff case...8K
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Tdskip
post Oct 10 2021, 06:31 PM
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You guys are great, really appreciate the coaching here. Looks like I’m going to road trip to PMS soon, at least I know where to find great pizza in Phoenix.
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9146BRUCE
post Oct 15 2021, 09:49 PM
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Hi Guys who is PMS and where are they located.
Thanks Bruce
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SO.O.C914er
post Oct 15 2021, 09:59 PM
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Patrick motor sports in Arizona top shelf work.
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Cairo94507
post Oct 16 2021, 04:53 AM
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Yeah- James Patrick is the guy when it comes to 914s for sure. His shop is well known for custom hi-horsepower Porsches. I would love to take my 6 to him and have him do the 915 conversion. (IMG:style_emoticons/default/beerchug.gif)
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Beach914
post Oct 16 2021, 07:45 AM
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My setup waiting for me to get to it.
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speed metal army
post Oct 17 2021, 05:23 PM
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I have a flipped r&p 915.. no side shift conversion bits though.
For a smaller displacement engine say 2.7 and under is a 915 even necessary?
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sixnotfour
post Oct 17 2021, 05:42 PM
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QUOTE(speed metal army @ Oct 17 2021, 05:23 PM) *

I have a flipped r&p 915.. no side shift conversion bits though.
For a smaller displacement engine say 2.7 and under is a 915 even necessary?

Is it Mag case 7:31 ??
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