Diff....icult decisions

Dave81 · Post by **Dave81** » Thu Oct 25, 12 1:09 pm

Right then Chaps........

Need your advice on this one:

http://www.ebay.com/itm/Mopar-8-75-8-3- ... ccessories

This is from a guy called Dr Diff and he appears to have a good reputation!

Is it worth the $$

Looking at this i'd still need the pumpkin and gears???? Is that correct?

Cheers

Cannonball · Post by **Cannonball** » Thu Oct 25, 12 1:30 pm

perfect for you

Dave-R · Post by **Dave-R** » Thu Oct 25, 12 1:31 pm

Yes Dr Diff is a good supplier.

The "3rd-member" you need that he refers to is what you call the "pumpkin and gears". So yes you will need to source those seperatly.

Dave81 · Post by **Dave81** » Thu Oct 25, 12 1:36 pm

Dave wrote:Yes Dr Diff is a good supplier.

The "3rd-member" you need that he refers to is what you call the "pumpkin and gears". So yes you will need to source those seperatly.

Are these '3rd members' more readily available in the UK, and cross compatable across all 8.75's?

Any idea Dunc?

Have also Emailed Dr Diff to see what the cost of shipping will be........

Cannonball · Post by **Cannonball** » Thu Oct 25, 12 1:43 pm

Dave81 wrote:
Dave wrote:Yes Dr Diff is a good supplier.

The "3rd-member" you need that he refers to is what you call the "pumpkin and gears". So yes you will need to source those seperatly.
Are these '3rd members' more readily available in the UK, and cross compatable across all 8.75's?

Any idea Dunc?

Have also Emailed Dr Diff to see what the cost of shipping will be........

yes all 83/4 diffs will fit all casings so your fine and yes centre sections come up for sale i have severall open centres maybe 1 suregrip left,

Dave81 · Post by **Dave81** » Thu Oct 25, 12 1:44 pm

Cannonball wrote:
Dave81 wrote:
Dave wrote:Yes Dr Diff is a good supplier.

The "3rd-member" you need that he refers to is what you call the "pumpkin and gears". So yes you will need to source those seperatly.
Are these '3rd members' more readily available in the UK, and cross compatable across all 8.75's?

Any idea Dunc?

Have also Emailed Dr Diff to see what the cost of shipping will be........

yes all 83/4 diffs will fit all casings so your fine and yes centre sections come up for sale i have severall open centres maybe 1 suregrip left,

Thanks for the info Mate!

I'll let you know if the shipping comes back okay......

Dave999 · Post by **Dave999** » Thu Oct 25, 12 2:27 pm

ask him if you can have standard bearings...

green bearing discussion?

some would say drag race only
some would say standard is best

others would say used green bearings on the street no problem...

Dave

Dave999 · Post by **Dave999** » Thu Oct 25, 12 2:30 pm

Green Bearing Company builds a bearing kit that replaces the cone-type wheel bearings. These are sealed roller bearing units that do not require end play adjustment, however they offer no side to side support, and fail quickly in street applications. These are drag race bearings only (the manufacturer even lists them under the “Racing” segment of their catalog). Green Part No. RP400.

Pete · Post by **Pete** » Thu Oct 25, 12 2:30 pm

Don't forget brakes, backing plates, etc that work with the axles...

Dave81 · Post by **Dave81** » Thu Oct 25, 12 8:08 pm

Dave999 wrote:Green Bearing Company builds a bearing kit that replaces the cone-type wheel bearings. These are sealed roller bearing units that do not require end play adjustment, however they offer no side to side support, and fail quickly in street applications. These are drag race bearings only (the manufacturer even lists them under the “Racing” segment of their catalog). Green Part No. RP400.

Dave,

found this on A Bodies Only =

For A Bodies Only wrote:I kept encountering opposing opinions on whether the Green 8-3/4 axle bearing were suitable for street use. So I wrote to Bearing Technologies Ltd. to get the story directly from the source.

So here's the scoop:
The question is whether or not the RP400 bearing kit for Mopar 8-3/4" axles is suitable for street car applications. There has been a lot of discussion that since your catalog lists it under "Racing" that racing is the only application. Some have also said that the RP400 doesn't have enough lateral retention for street use. Others have said that they have several thousand miles of street use with the RP400s in their axles and have encountered no problem. Can you clear up the issue for me?

Dear XXXXXXXXX,

I received your question about the RP400. I'll try to answer this to the best of my ability. The original intent of the RP400 designed by the Green Bearing Company was meant as a replacement for the original taper bearings in the rear end of Chrysler / Mopar applications. It was made for street vehicles, as were all of Green's automotive bearings. Over time these products became favorites of custom axle manufacturers such as Moser Engineering, Strange Engineering and Mark Williams Enterprises. Green, being a job shop, manufactured a multitude of bearings for these outfits and started categorizing them as "Racing" bearings due to the fact that the products were becoming popular in that application.

There are a lot of these bearings on the road in both street applications as well as on track applications. As far as performance, all I can say is that these have been a staple in our product line with no revisions / issues for a long time. The experts on the performance of the product in various applications would be Moser or Strange. If you would like to contact them, you have to ask specifically for the RP400 with the fixed flange because there is a modified version (MO400) which was designed by request for Moser and has a slide over flange with a snap ring retainer.

You can visit www.moserengineering.com or call 260-726-6689 for more information.

Thank you for your interest in our products.

Best Regards.

So from the above statement and from the posts i've looked at it seems most people have no issues, and the green bearing (sealed bearing by other names), is now on most modern cars.

Hmmmmmm.....Will look a little deeper at it!

Dave81 · Post by **Dave81** » Thu Oct 25, 12 8:11 pm

Pete wrote:Don't forget brakes, backing plates, etc that work with the axles...

Duly noted Pete.

Looking at what this is gonna cost then, i'll focus on getting the axle over first and then go from there...............

Jeff · Post by **Jeff** » Fri Oct 26, 12 4:26 am

Blimey... Planning time Dave. I agree with the others, don't take it to far. Else they turn into big projects. I try to keep them so If needs be I can get it running asap.... Only one I took right back was Billy's old beetle. Just a shell. Then I ordered all new panels, even doors. Biggest mistake I ever made, those new beetle panels dont fit!

On the SBP and the LBP front.... There are quite a lot of SBP wheels over here for sale. Seen some real nice ones lately. But shipping is a killer. Unless one of ypu blokes buy my Fury, and load the container and car up with spares.

Jeff · Post by **Jeff** » Fri Oct 26, 12 4:34 am

List of local stuff right now...

DANA 60 DIFFERENTIAL DATE CODED 1968..NO HOUSING..BEEN IN MY GARAGE FOR YEARS..HAVE NO USE FOR IT NOW..HOPE IT MAY HELP SOMEONE RESTORING A MOPAR MUSCLE CAR..CALL IF INTERESTED. WILL CONSIDER ALL OFFERS $100ono

Mopar Posi 8 3/4 ,Brand new Richmond gears(3:7:7), in a 742 case.For the serious Mopar guy,you know how hard these are to find.Large yoke drive shaft flange...This is for complete pot/pig/3rd member only.Bolt in and GO!!!!! $350ono

MilesnMiles · Post by **MilesnMiles** » Fri Oct 26, 12 8:22 am

$350 to drop in and go!!! Bargain, best get onto Mr Fenton, Dave.

Dave81 · Post by **Dave81** » Fri Oct 26, 12 12:39 pm

MilesnMiles wrote:$350 to drop in and go!!! Bargain, best get onto Mr Fenton, Dave.

Have spoken to Mr Fenton today as sending it by UPS is a no go........(i asked out of interest and knew it would cost....more than the diff itself).

Very good price on shipping, so will be using him for whatever i buy!!

At the mo, going by what has been stated i recon the axle, shipped and landed will be about £650. Just got to pay the man on top of that!

Have to say the $350 job sounds good, but at the mo would happily buy the rebuilt one. Cass (Dr Diff) has also been very helpful with info via email!

Just a shame that a lump of metal costs so much.........