JHM Group Buy: 4:1 Center Diff Upgrade(01E, 0A3, 02X, 01A)(Manual Trans only)

[BITRBO]

Motul is good stuff as well as the redline mt90 which we sell and use.

The amount of fluid that drains out of the trans will depend on the angle really, usually not too much comes out though. It would be a good time to change out your trans fluid with the diff swap if you have not recently done so.

This is soo true... I unknowingly had my front jacks one notch lower than the rear jacks (maaaaybe one inch overall??), and that's how I drained the car.... It wasn't until I put the plug back in and started refilling the rear when I realized the problem, cause it started overflowing 1/2 quart before it was supposed too

[617 Bones]

This is soo true... I unknowingly had my front jacks one notch lower than the rear jacks (maaaaybe one inch overall??), and that's how I drained the car.... It wasn't until I put the plug back in and started refilling the rear when I realized the problem, cause it started overflowing 1/2 quart before it was supposed too

Is that the best way to flush it out?? By giving it a little Reverse Rake stance? Sounds like a bad kung fu movie! LOL
Or is there a nice big 'ol tranny drain plug down there??

[mnooooa4]

For those in the Minneapolis area Tristan at Further Performance has a 2x diff for B6/B7 that I'm borrowing to send in so that my car is in & out in one day. He's open to keeping it in rotation for anyone who will have the swap done at Further. $325 installed with red line MT90 trans fluid replacement and includes shipping the core out to JHM.

Just came from Further. He has a 03A (not 02X). Too bad for me, but good for B6 S4 and others.

[alwaysaudi]

Paid

[alwaysaudi]

Hey Dan. Anyway to get B6/B7 S4 center diff core to the guys at VAST since they are like a midwest hub for you guys?? ; > Can't hurt to ask

Otherwise anyone know if Tristan at Further Performance in Minn would like to rent one of his b6/b7 cores? Trying not to be without the car for more than a day or two.

[boostbxc123]

Want to be part of the gb i have a 01e tranny

[BITRBO]

f*ck it... I'm in too!

Dan, sign me up for a 2001.5 01E 6MT

TIA

[Dan@JHM]

For anybody else that is still interested in this GB, please follow these instructions:

Looks like we are good to go on the pricing for now, here are the instructions for payment and shipment:


Payment:

Please click the following link and log into our store for payment:

http://www.jhmotorsports.com/shop/ca...only-p-46.html


You will see there are 3 drop down options:

1. Center Diff Core: Please select NO (please do not select a core, this gb is for non core customers only)

2. GROUP BUY: Please select YES(this will give you the gb discount)

3. Transmission Type: Please select your correct center differential by following the provided instructions


You will also see the various options you have as far as shipment goes when you check out.


Note: Please leave your audizine name in the comments when you process your order, that way I know who has paid.



Shipment:

Once you have paid for and completed your order it is now time to ship your center diff into us for modification. Please package up your center diff well and send it to the following address:

JH Motorsports Inc.
17508 Murphy Pkwy.
Lathrop, CA 95330

Note: If we receive your center diff early enough in the day we will be able to ship it back out same day. If we do not receive the diff in time we will send it the very next business day.

Note: Please include your information inside the box with your center diff, at the very least please include your order number.


We should be able to keep this GB open for at least a couple of weeks from this point, please follow the previous instructions if you are seeing this update at a later time.

[doctorheine]

how do you package a diff to send it in? will newspaper and clear tape work :-)

[617 Bones]

Just got back from the post office and my center diff is otw to JHM!!!

Btw, I have the front jacked up higher than the rear and I didn't dump THAT much gear oil... I will try removing the drain plug this w/e, but I thought it was all supposed to poor out the rear housing when I removed it.

[BITRBO]

Just got back from the post office and my center diff is otw to JHM!!!

Btw, I have the front jacked up higher than the rear and I didn't dump THAT much gear oil... I will try removing the drain plug this w/e, but I thought it was all supposed to poor out the rear housing when I removed it.

LOL - sorry if you misunderstood me man, but what I did was an accident and actually caused me to overfill the rear diff (cause it still had a little extra fluid inside from being tilted fwd)... you're supposed to have the car LEVEL when draining oils

[617 Bones]

LOL - sorry if you misunderstood me man, but what I did was an accident and actually caused me to overfill the rear diff (cause it still had a little extra fluid inside from being tilted fwd)... you're supposed to have the car LEVEL when draining oils

Ah, that makes more sense. I was all excited to tear that mother out and I def misread your post. I'll level it out and drain out the rest when I put it back together.
Thanks for the follow-up post!

[jaybquick@JHM]

Thanks again everyone. We are ready to receive your diffs, ship them ASAP and we will crank them out as fast as possible (in most cases they should go out same day received)

Also due to the great response we will leave this group buy wide open for a bit longer to anyone who wants to jump in. So feel free to make the purchase if you want to join in and ship us your diff ASAP.

[twiztids4]

hey i was wondering is there any special tools needed for this install and are there instructions anywhere for center differential swap? i have been loooking everywhere and my mechanic never did one before and just wanted to look it over before we do it tomorrow night.thanks

[mikekehler]

In, 01E, paid.

[tbomb80]

In/Paid -order# 6160

[sholitz]

Mine is shipped and will be there on Tuesday! Thanks JHM.
P.S. For anyone having trouble getting their diff out. Bigger hammer/Impact.

[617 Bones]

P.S. For anyone having trouble getting their diff out. Bigger hammer/Impact.

Yeah, BIG F'IN HAMMER!! Those pins that hold the housing on were tight as Fxxx on my 2002 1.8T!
Then i needed a light 'tap' with a plastic dowel to pop the diff out of the housing.

[downhillracer]

Dan, pm sent

[BITRBO]

Dan: paid, shipped, and PM sent...

[AUDIocee]

I will check with my mechanic to see if he's got room to do this.

Just ordered and Paid.
Appt with my mechanic is Oct 18, 2010
-Raj

[cjernigan]

I'm interested in this Group Buy. Is the price supposed to be $250, $100 off from the retail price of $350? or is that supposed to be $300 off from $400? The website currently shows $350 so I wanted to be sure.

[AUDIocee]

The website currently shows $350 so I wanted to be sure.

Instructions are here

The price will come down to $250 once the option for the group buy is selected.

Here's a graphic of it:

[sholitz]

I got my diff back in my car. The test drive was awesome. Heading to lake superior performance rally this weekend and happy to report that my car will point before corners now! Thanks for the group buy!

[leonbtwo]

Yeah, BIG F'IN HAMMER!! Those pins that hold the housing on were tight as Fxxx on my 2002 1.8T!
Then i needed a light 'tap' with a plastic dowel to pop the diff out of the housing.

I thought it's only compatible with 3.0 02, or did they mean 3.0 and 02 1.8? If so i'm in!!!

[AUDIocee]

Hi Guys, my S4 has about 95000km/59000 miles on it and still on the original clutch. I was wondering if while changing the center diff would it be the right time to change the clutch? Or does it not really make a difference in labour times/cost if I do it later.
The underlying reason is that while the car is in the shop, I was gonna do the diff and downpipes, but if it needs a clutch soon (not having any issues at the moment) I'd just do the diff and clutch.

Thanks,
Raj

[617 Bones]

I thought it's only compatible with 3.0 02, or did they mean 3.0 and 02 1.8? If so i'm in!!!

My 2002 B6 1.8T Avant is a 5-Spd with the 01A transmission, so it was listed in the offerings on the JHM site and page 1 of this thread.

[617 Bones]

General question regarding the 4:1 center diff upgrade...
now that I have it installed, how should I be altering my driving style to maximum the "FUN" factor of this mod??
i have some big sweeping on/off ramps and big empty parking lots in my area if there are any suggestions

[racing_fan]

617 Bones...
Go fast, hit the brakes, turn in and stab the gas.

Just a suggestion.

[617 Bones]

617 Bones...
Go fast, hit the brakes, turn in and stab the gas.

Just a suggestion.

Sounds simple enough, thanks racing_fan! I'll give it a try when I get back from vacation!

[robpenn]

Dan, I'm interested for a 2005 O1E 6sp allroad. Will include a couple other purchases too. Thanks.

Rob

[jaybquick@JHM]

hey i was wondering is there any special tools needed for this install and are there instructions anywhere for center differential swap? i have been loooking everywhere and my mechanic never did one before and just wanted to look it over before we do it tomorrow night.thanks

6mm allen for the driveshaft bolts and T45 torx for the rear cover. If you need to refill the trans fluid you need a 10mm allen. That is it. V6s and V8s usually take a little more work moving the exhaust out of the way. But 4cylinder turbo cars don't require this. There is a short write up on our product page.

I thought it's only compatible with 3.0 02, or did they mean 3.0 and 02 1.8? If so i'm in!!!

The 02 1.8tis a 5-speed. yes we can do those. We can actually do ALL of them from 99.5 and up (except 06 and up B7 S4s and RS4s which we are working on now)

Hi Guys, my S4 has about 95000km/59000 miles on it and still on the original clutch. I was wondering if while changing the center diff would it be the right time to change the clutch? Or does it not really make a difference in labour times/cost if I do it later.
The underlying reason is that while the car is in the shop, I was gonna do the diff and downpipes, but if it needs a clutch soon (not having any issues at the moment) I'd just do the diff and clutch.

Thanks,
Raj

The downpipes do need to be disconnected from the cat back but not removed to do this. But if you are changing the downpipes it will save on the diff labor.

Also if the downpipes are out it should save on the transmission labor for sure. Since they will pull the downpipes regardless to do the trans your downpipe install would basically be free.

Dan, I'm interested for a 2005 O1E 6sp allroad. Will include a couple other purchases too. Thanks.

Rob

Shoot us an email at [email protected]

Thanks.

[Dan@JHM]

Sorry about the late update guys, It really does not matter at this point but if you are on the list and have paid and want to be marked as paid please shoot me a pm so I can mark you off the list. We just got a few orders from customers that did not put their screen names in the comments.


Obviously we met our goal for this GB but we are going to leave it open and the price where its at for an additional period of time for the late crowd.


Thanks for everyone's participation!

[Turtle]

I still want in on this. give me a week please



Marc

[JHaag13]

I'm in.

02X 6-Speed A4 B7

Justin

[s44ever]

I am in for a 0A3 - 6-speed = B6 S4 diff.

[Terence]

I'm in.

02X 6MT quattro A4 B7

[JHaag13]

Will there be a group buy on the BBK anytime soon?

[Matt_D]

Pm sent ref shipping costs to uk

[xccess]

is this still open ? web site only show 315 and not gb found