Best to buy or rebuild rear differential?
#1
Safety Car
Thread Starter
Best to buy or rebuild rear differential?
If buy, any recommendations?
If rebuild, same??
What about having the r/p just swapped?
GTR1999 no longer lives here.....though if anyone has contact info.....
Considering changing out my 3.08's for a little more oomph.
Thanks!
Rob
If rebuild, same??
What about having the r/p just swapped?
GTR1999 no longer lives here.....though if anyone has contact info.....
Considering changing out my 3.08's for a little more oomph.
Thanks!
Rob
#5
Safety Car
You can get rebuilt pumpkin for about 900 shipped.. then ship back the core charge, then you have to worry about the core charge getting credited.. they will find something to cut into your core charge refund.
you can get your original rebuilt, but that is shipping both ways also.. unless you are close to someone that can do it for you.. they will usually find a way to get you for another couple of hundred.. yokes, cracked carrier.. etc....
after you get into it that deep, you will get the 'while I am at it' disease. plan on new U-joints, blast/paint/powercoat the rear suspension, new yokes, new heavy duty differential cover.. maybe new shocks. maybe new crossmember bushings. then rear allignment.. you will have to drop your exhaust and it may not go back together..
it is a big project.. it cost me $1000+ for mine total and I drove my pumpkin to Ikerds to trade it in. removing and installing i did all myself.
so it is really about then same, you have to decide if your current one is worthy.. ( original with no cracked casings )
pick someone who knows what they are doing, warrantee work is a pain since it is mostly labor to remove and install.
you can get your original rebuilt, but that is shipping both ways also.. unless you are close to someone that can do it for you.. they will usually find a way to get you for another couple of hundred.. yokes, cracked carrier.. etc....
after you get into it that deep, you will get the 'while I am at it' disease. plan on new U-joints, blast/paint/powercoat the rear suspension, new yokes, new heavy duty differential cover.. maybe new shocks. maybe new crossmember bushings. then rear allignment.. you will have to drop your exhaust and it may not go back together..
it is a big project.. it cost me $1000+ for mine total and I drove my pumpkin to Ikerds to trade it in. removing and installing i did all myself.
so it is really about then same, you have to decide if your current one is worthy.. ( original with no cracked casings )
pick someone who knows what they are doing, warrantee work is a pain since it is mostly labor to remove and install.
Last edited by joewill; 02-05-2010 at 11:44 AM.
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Haak (02-06-2019)
#7
Drifting
Member Since: Jul 2006
Location: Sault Ste. Marie Ontario
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Hi Rob,
I had my original differential taken apart & inspected by a local transmission shop.
He pulled out the internals and gave me back the empty pumpkin to sandblast & paint and then reassembled the unit with the stock components, new seals etc.
Luckily, the old gearset was in good condition and did not need to be changed but I'm also contemplating a little more oomph then the 3:36 provides.
My buddy has a complete spare unit with 3:36's in it that he is willing to let me have for an upgrade to 3:55's or 3:73's providing we keep my original unit as a shared spare.
It may be worth while for you to look at buying a used unit keeping your original as a spare or split the costs with a buddy for a similar arrangement.
Also talk to the guy who did your transmission to see if he can help you without the extra shipping costs.
I had my original differential taken apart & inspected by a local transmission shop.
He pulled out the internals and gave me back the empty pumpkin to sandblast & paint and then reassembled the unit with the stock components, new seals etc.
Luckily, the old gearset was in good condition and did not need to be changed but I'm also contemplating a little more oomph then the 3:36 provides.
My buddy has a complete spare unit with 3:36's in it that he is willing to let me have for an upgrade to 3:55's or 3:73's providing we keep my original unit as a shared spare.
It may be worth while for you to look at buying a used unit keeping your original as a spare or split the costs with a buddy for a similar arrangement.
Also talk to the guy who did your transmission to see if he can help you without the extra shipping costs.
#8
Race Director
GTR1999 and Tracdogg2 are both forum members and very good at what they do. I see you are from Washington. tomsdifferentials.com could be a good option for you. They are close to reduce shipping costs and do first class work.
#10
Rob,
Gary helped me out with my diff. It needed new seals and he sold me the best ones and coached me through the job. He's a super-nice guy! Be forewarned, though. He doesn't come cheap! He doesn't do "standard" rebuilds. He is very detail-oriented and goes way beyond what the big vendors do in their standard $800 or $900 job. I'm sure it is money well-spent and his differentials will probably outlast us!
temvette72
Gary helped me out with my diff. It needed new seals and he sold me the best ones and coached me through the job. He's a super-nice guy! Be forewarned, though. He doesn't come cheap! He doesn't do "standard" rebuilds. He is very detail-oriented and goes way beyond what the big vendors do in their standard $800 or $900 job. I'm sure it is money well-spent and his differentials will probably outlast us!
temvette72
#11
Race Director
I knew his 12 bolt builder passed away. He must have done the regular builds also. I got my 12 bolt 4.11 from Tom's a couple months before he passed. GTR1999 is the man.
#12
Intermediate
Member Since: Dec 2008
Location: cary nc
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i got mine from duntovmotors, it was the most expensive option, but was also the most complete. i needed new stub axles anyhow and the heavy duty rearend cover was a nice touch. the shipping was included in the price and the one way shipping offset some of the cost of shipping my old diff to be rebuilt. i even opted for the carbon fiber clutch packs. if you dont have a local shop that can do the rebuild i would definately recommend duntovmotors. now i just need to find a way to get rid of the old diff and not lose my **** in the process. duntov will give ya 335 dollars max if everything checks out good, but you still gotta get it to them. im not sure what the shipping would be to send it to Texas. maybe i will just rebuild it myself some day.
#13
Check the swap meets. I found a complete rear assembly with cover, side yokes and 3.55:1 gears for $400. I was allowed to take the cover off and inspect everything before I bought it. And I can always go back to my 3.08 assembly in a few hours.
good luck
good luck
#15
Safety Car
I used to have a guy here in NorCal that did my carb base plate bushings for me. Time caught up with him and now I'm scr**ed. I still do my own rear ends, but setting up a gear set is best left to the pros if you don't know what your doing.
Hans
#16
Team Owner
Member Since: Jul 2004
Location: Redondo Beach, California
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Sorry to hear Tom doesn't do rebuilding. I think the fire has gone out in his belly.
#17
Cruising
Member Since: Sep 2014
Location: Bossier City Louisiana
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i got mine from duntovmotors, it was the most expensive option, but was also the most complete. i needed new stub axles anyhow and the heavy duty rearend cover was a nice touch. the shipping was included in the price and the one way shipping offset some of the cost of shipping my old diff to be rebuilt. i even opted for the carbon fiber clutch packs. if you dont have a local shop that can do the rebuild i would definately recommend duntovmotors. now i just need to find a way to get rid of the old diff and not lose my **** in the process. duntov will give ya 335 dollars max if everything checks out good, but you still gotta get it to them. im not sure what the shipping would be to send it to Texas. maybe i will just rebuild it myself some day.
How do you like the diff? How much power are you running through it? I read several bad reviews about them and wanted to hear from someone that might have had a good experience.
#18
Melting Slicks
I bought a complete diff assembly from them some years ago. The stub yokes soon began to wear. They did not use the 'hardened' yokes that I asked for. I did not ask for a deal, I wanted a top quality unit and was very clear about requesting hardened yokes that they are supposed to have anyway. Speaking to Edward at Duntov in November, he told me that the expected life span of diff stub yokes is only 50,000 miles. Weird. I spoke to Ken McCormick at Lone Star, Duntovs yoke supplier - he told me that their yokes have a life time warranty. Edward is Alan's, the owners brother, sometimes known as Edmond. Edward eventually agreed to sell me some yokes for 1/2 price. Gee thanks, I'm stuck for the labour. After I received the yokes I contacted Alan, who is hard to get a hold of, he offered to credit me if I sent the defectives back but he wasn't all that keen. They don't return emails on warranty/defective discussions. I didn't want to be stuck for an additional shipping charge if my credit didn't appear so I decided to cut my losses.... Too much weirdness there. Too bad. To be fair, Jason, their parts guy is very friendly. When I ordered my 1/2 price stub yokes I also asked for a cover gasket and side seals. Jason who was aware of my situation did not charge me. The seals were Korean so I did not use them. I bought real ones locally.