.

[AK72]

In for a 3.91

1. Bigjae46
2. Bigjae46
3. robgill
4. Randall921
5. Enjoy_m3
6. Cali chase
7 .wrongchi
8. AK72

[wrongchi]

In for a 3.91

1. Bigjae46
2. Bigjae46
3. robgill
4. Randall921
5. Enjoy_m3
6. Cali chase
7 .wrongchi

[Heirforce1]

I'm also interested in a 3.91

1. Bigjae46
2. Bigjae46
3. robgill
4. Randall921
5. Enjoy_m3
6. Cali chase

I removed myself from the list. Deciding on 4.1 instead.

[Epoustouflant]

I have posted an update to the initial GB redirected anyone looking for 3.91 gears to sign up here Let's get to 20!

[cali chase]

I'm also interested in a 3.91

1. Bigjae46
2. Bigjae46
3. robgill
4. Heirforce1
5. Randall921
6. Enjoy_m3
7. Cali chase

[Triqzy]

For those planning on having a local shop do the install, I recommend finding a place that is guaranteed that they'll do it (and for a good price) before committing. In my (limited) experience finding a place willing to do rebuild work on an M diff isn't as easy as you might expect. I had a hell of a time finding a place that would do it in LA. Almost every BMW place that got recommended to me told me that they don't do diff work anymore because it's not worth their time for what they'd charge because it's so finnicky. Standard transmission/diff shops didn't want to touch it because it was BMW/M. I only ended up finding one place in the LA area that would do it, and they charged a lot (wanted $600-$700, diff already out of car and parts provided by me, to do pinion and output bearings/seals, no ring and pinion swap or anything else).

This is super dependent on where you live, of course, but before my experience I just kind of assumed that of course I'd be able to find a place that would do my diff around here. Turns out it wasn't easy even in a huge city. Ymmv.

Experienced the same difficulty when calling shops around the LA/SoCal area. I bought a set of 4.10 motorsport gears a while ago and they're still sitting in the box for this exact reason.

[Epoustouflant]

I am going with 4.1, not 3.91

Pre-order here: https://euroconnex.co/products/forge...ears-pinions-1

[maupineda]

The GB goes live when 3.91 is at 20x committed. MFactory will issues invoices.

I am going with 4.1, not 3.91

[Epoustouflant]

What is the next step now? Will we get the invoice to pay? Or how does it work?

The GB goes live when 3.91 is at 20x committed. MFactory will issues invoices.

[maupineda]

That's the correct understanding. We have reached 20x for 4.10 - 3.45 is following up. I will have to create a different GB listing once we have enough 3.91 - I will most likely cross post this into the E46 M3 Facebook Groups afterwards to help us reach 20x.

What is the next step now? Will we get the invoice to pay? Or how does it work?

[Epoustouflant]

So just to be clear, we need to get 20 people together on the 3.91's for the $559 price? I see that the 20 piece requirement had been met for the 3.45/3.62/4.10.

I am making my mind up today and would be #7 for the 3.91's.

That's the correct understanding. We have reached 20x for 4.10 - 3.45 is following up. I will have to create a different GB listing once we have enough 3.91 - I will most likely cross post this into the E46 M3 Facebook Groups afterwards to help us reach 20x.

[enjoy_m3]

Thanks ATB, keep us updated with your diff if anything. I'll give both shops a call and talk them to see which I may be more comfortable with.

I'm also interested in a 3.91

1. Bigjae46
2. Bigjae46
3. robgill
4. Heirforce1
5. Randall921
6. Enjoy_m3

[ATB88]

ATB, mind me asking what shop did the work on your diff? I'm looking around for shops that can help with backlash adjustment.

Or if Bigjae46 has any tips and tricks on how to check the backlash and pinion pre load.

The place I mentioned earlier that wanted $600 for labor on bearing swap was Marc Norris at Bavarian Workshop in Woodland Hills. Nice and knowledgeable guy when I spoke with him on the phone. Sounded very confident that he knows how to dial these diffs in. Here he is on Leno with a heck of a 2002: https://www.youtube.com/watch?v=ICMS...ture=emb_title

We were gonna go with him, but, then, while I was doing my 6MT swap at a DIY garage in Baldwin Park, there just so happened to be a bunch of guys setting up their new shop next door (412 Motorsport: https://www.yelp.com/biz/412-motorsport-baldwin-park) and their owner Sam was super helpful and gave me some tips for the swap. I told him about my difficulty in finding a place to work on my diff and he offered to do the bearing job himself, while I finished my swap, and he did it on the cheap ($300ish?). But he said that was much cheaper than he'd normally charge for this work. I think this was before their shop was even open to the public I have no idea if their shop normally offers this service or if he was just doing me a favor while his shop was still getting off the ground because he was bored? Either way, good guy and it's worth giving 412 Motorsport a call to ask. But FWIW I really don't know their overall track record on diff rebuilds, just that mine's still going 25k miles later and that they're super friendly guys

[Cubieman]

NEW EUROCONNEX GB:
FORGED MOTORSPORT FINAL DRIVE GEARS & PINIONS (3.45, 3.62, 4.10)

So just to be clear, we need to get 20 people together on the 3.91's for the $559 price? I see that the 20 piece requirement had been met for the 3.45/3.62/4.10.

I am making my mind up today and would be #7 for the 3.91's.

[EthanolTurbo]

I'm also interested in finding a SoCal shop for my 3.91 swap and rebuild.