915 Ring and Pinion Options

[mikedsilva]

Pulled this 915 apart and found this:

So I need a new ring and pinion. Rest of the trans looks ok. Not sure why this has happened. The pinion race is not loose in the housing and I don't believe this has been apart before. Owner said it didn't whine and that it just was a little hard to get into 1st and 2nd.

Do I assume that buying 2nd hand is not a good idea? Any feedback on Albins items?
Open to suggestions...

[Matt Monson]

Something went through there and chipped it.

I have a super nice used 8/31 with speedo drive. I also have new Hoer 7:31 for about $1000 less than Porsche Classic’s price. If you’re interested email me at gtgears@yahoo.com. I don’t PM.

Last I checked Porsche Classic only has 7:31 available. No 8:31. But it never hurts to ask them.

Albins are noisy.

Tandler in Germany makes nice stuff and has an 8:35 option available. Don’t k ow anyone in the States who stocks them.

[mepstein]

I would buy Matt’s good used set.

[pmax]

There's is a correspondng gouge the ring I suppose.

[NPR]

Hi,

We have new 8:35 ring and pinions in stock. No Politics Racing. Hope this helps.

[mikedsilva]

Originally Posted by NPR

Hi,

We have new 8:35 ring and pinions in stock. No Politics Racing. Hope this helps.

mmmm 1st post too...

[gled49]

Met the NPR guys at RennSport, lots of great products, and good people.

[Helix8]

I have a Guard 930 Pro in my 915 and it has been a great improvement on the racetrack. I just had installed a NPR LSD in my Cayman as Guard's lead time was too long for my needs and so far the NPR has been pretty d*mn good on the track too.

[NPR]

Hi Guys! Sorry about the double post... Thank you for your kind words

[mikedsilva]

Originally Posted by NPR

Hi,

We have new 8:35 ring and pinions in stock. No Politics Racing. Hope this helps.

Which brand is that?

[winders]

Mike,

That is an NPR ring and pinion. You cannot beat the quality of their products. Paul Guard is deeply involved with NPR.

[Matt Monson]

Originally Posted by winders

Mike,

That is an NPR ring and pinion. You cannot beat the quality of their products. Paul Guard is deeply involved with NPR.

You can’t believe everything you read on the internet. They’ve been going around telling people they bought my factory and that I’m out of business. If they bought a ring and pinion machine, that would be big news.

No Poltics Racing is a vendetta business, with the express intent of putting me out of business. I bought Guard Transmission 15 years ago. Paul doesn’t like what I’ve made the company and NPR is their answer to that. Their marketing flyers look like old GT flyers. Their product looks just like GT product. It’s a copycat business deliberately presented in a way to create market confusion and make the consumer think it’s the same thing, because Paul Guard.

[winders]

Originally Posted by Matt Monson

You can’t believe everything you read on the internet. They’ve been going around telling people they bought my factory and that I’m out of business. If they bought a ring and pinion machine, that would be big news.

No Poltics Racing is a vendetta business, with the express intent of putting me out of business. I bought Guard Transmission 15 years ago. Paul doesn’t like what I’ve made the company and NPR is their answer to that. Their marketing flyers look like old GT flyers. Their product looks just like GT product. It’s a copycat business deliberately presented in a way to create market confusion and make the consumer think it’s the same thing, because Paul Guard.

Are you calling me a liar?

Assuming NPR did not make the ring and pinion themselves but had it made for them...how is that any different than your business?

I have no comment on the rest of your rant...

[Matt Monson]

Originally Posted by winders

Are you calling me a liar?

Assuming NPR did not make the ring and pinion themselves but had it made for them...how is that any different than your business?

I have no comment on the rest of your rant...

Every ring and pinion I've ever manufactured, I have showed the makers mark and openly said who made it. Ricardo, Hoer, etc. That's because they are established brands, with a known track record. Even in Porsche boxes, every day here on this forum there are conversations about chinese or eastern bloc made junk. Mike asking who made it is a very legitimate question. Has the company been making them a while? How were they tested and by whom? A brand new vendor doesn't get some pass because of some family connection. I'm guessing it's a tandler, which is reputible, but also something anyone here could buy directly if they care to import.

As for the rest? I meant that everything is not as it seems. I've attached a couple pictures. The clutches on the left are our coated clutches, the cornerstone of our brand and performance. The ones on the right are just polished and not the same at all.

When covid happened, the coating facility closed down and was gone for 18 months. During that time, NPR was producing and selling diffs. They approached Singer, a customer of mine since 2012, who I have made well over 100 LSDs for. Desperate they bought some NPR LSDs, while leaving their POs open with me. Here we are now and I've filled those old POs. And have been helping to retrofit some new NPR LSDs with actual friction clutches so they can deliver the level of car they always have.

I only know what I know. Do you guys with NPR LSDs in your cars have friction clutches or just polished plates? I don't know. I know that they sold some to Singer like that, and Singer caught it on the test drive. You can't see what's inside that pretty LSD housing. Just because something looks like what you're used to, doesn't mean that it is. YMMV.