Emulsifide

iTrader: (22)

Hey everybody,

I just wanted to do a quick query and see how the QP 9" running crowd is doing with their rear ends. Talking about this rear on my local forum, there seems to be a decent amount of hearsay about this rear having problems, with nobody actually saying what the problems are.

I specifically want to know the following:

Purchase date
Rear end specs
Who built your center section?
Any installation problems?
Current mileage
Horsepower behind it
Transmission type
Any problems since install?

If you'd be so kind to respond, I ask that you PLEASE stick to the questions asked. I don't want this to turn into a QP vs MWC crapfest that plagues all of the other QP threads I've read on here. No hearsay either please. If you don't have a QP rear, please don't post.

Thanks in advance!

Emulsifide

iTrader: (22)

Come on guys. I know you're running QP housings. Please speak up. Thanks.

slow67

iTrader: (2)

Purchase date August 2009
Rear end specs stock width, 35 spline axles, HRW Pro Cas and spool
Who built your center section? QP
Any installation problems? Adjustable PHB needed, otherwise rearend was offset, and very tight fit on the PHB bushing
Current mileage ~20K
Horsepower behind it Stock
Transmission type 4L80E
Any problems since install? Gears are a little noisy

Mikey 97Z M6

iTrader: (37)

Purchase date: 02-25-09
Rear end specs: Stock Width, Spohn LCA Relocation Brackets, Strange 'S' Case, Detroit Locker, 3.89 Gears, QP Billet Yoke
Who built your center section?: I Did
Any installation problems?: The Spohn torque arm needed modifications to fit well
Current mileage: Unknown, over 100 track passes
Horsepower behind it: 550+
Transmission type: T56
Any problems since install?: Blew out a axle bearing seal on passenger side. Not QP's fault considering the cheap chinese made bearing came with the Moser Axles that were drop shipped directly from Moser...

Additional Info: I sold the original QP rearend in 2010, and bought another QP housing and 35sp axles. The new one is narrowed 3" on each side. Running the same center I had before except with 4.30 gears and a QP spool. No problems with this one to speak of.

Mike

SIC LSX

iTrader: (10)

I have over 3 k miles on mine
Narrowed 2.5" each side. Strange s center , 35 spline spool, 4.30 gears, moser axles. I love it. Has very very miner whine I mean u have to get it just right to hear it and u have to be looking for it to hear it. Mine I had to drill bigger holes for shocks and phb. For $2,000 shipped u can't beat it.

RARON455

iTrader: (35)

Ive had my QP for about 2 years now, moser center sectionNo complaints, on install I had to ding a few spots to make a lil room for my torque arm, QP uses a mount with heim joints, although this could be due to my aftermarket torque arm. I had it built to use my stock brakes. it has never given me any trouble, and that was behind a six speed dumping the clutch at 5500. Engine back then was making 463RWHP.

SIC LSX

iTrader: (10)

My car is lowered with no bump stops so I have to hammer some stuff too. If I had some good shocks and not 130,000 mile stock shocks it may not of hit.

Oh another thing they don't send it with the t bolts for the backing plates. They send Allen head bolts and u have to grind down one side of the head of the bolt to fit. They were also a little short for my taste. Couldn't fit any washers on it. Also I'm having trouble getting the axle tubes to seal. What did y'all do? I know all 9" have this problem I've seen it on me and moser and strange do the same thing.

Mikey 97Z M6

iTrader: (37)

When I replaced the axle bearing on mine, the guy at NAPA recomended adding a separate axle seal from a mid 70's Ford truck or van. Can't remember the part number but it installed just inside of where the bearing rides and relieves some of the internal pressure on the bearing seals. I also used a small amount of black RTV around the outside of the bearing before installing the axle. Haven't had any leaking issues since.

Mike

SIC LSX

iTrader: (10)

Yeah found the part #. Going to pull it out and add it in the tube. Just rtv wouldn't work I tried that twice so I'm sure the seal will fix it.

Emulsifide

iTrader: (22)

What's the part #?

Thank you all for responding.

SIC LSX

iTrader: (10)

I search 9 inch leaks and it was posted like 10times. I driving so can't look truck 75 Ford truck I remeber

donalr76

Purchase date: August 2008
Rear end specs: Stock Width 35 spline Axles
Who built your center section? Aluminium Center Monty from Hughes Springs, TX
Any installation problems? Nope I had an Adjustable panhard already.
Current mileage: 30k
Horsepower behind it: 500 rwhp
Transmission type: M6
Any problems since install? Nope when it hooks it goes no breaks yet with routine maintence.

93v8clone

p/d .2-2011
rear spec . stock width 35 spline axles
c/section . strange s case, richmond 3.90 street gears,daytona pinion support ,3150 yoke , moser alum spool built by me
install problems . had to drill the shock mounts out to a 9/16th hole for the qa1,s had to drill a 9/16,s hole for the p/h/b bolt to go thru as well .
mieage. 10 passes
h/p is 490 and 6xx trq
performabuilt lvl3 4l60 e
problems since .... a seapy axle seal, kinda cumbersome trq arm mnt setup , had to grind the supplied allen bolts down to bolt brakes on as they didnt send t-bolts .


all in all though i am very happy with it , i mean it is aftermarket and nothing goes as planned or easy lol

shepss217

iTrader: (5)

man if you guys could get that part number for the axle seals it would be great, i didn't install mine yet but am going to the end of this week and want everything done right, cuz sunday i'm supposed to be racing a gm vs. mopar shootout and it sure would be nice to eat up some challengers

shepss217

iTrader: (5)

got the part# from QP, they said a National brand seal#51098 will work, i also asked QP about the extra movement in the rearend and he said he hasn't had any reports of anyone having any issues, he said the only cars that might have a problem is like a 1,000 hp turbo car, but he said they do make a kit that has solid rod ends and a couple mounts that you weld in to eliminate any side to side movement. my rear end came with the t bolts instead of the allen heads to mount the backing plates

TSAEB

iTrader: (5)

Im liking this option rather then the 8.8 build. Can you guys share the over all price at the end what it cost you to piece the qp 9 rear together?

shepss217

iTrader: (5)

i was under $2,000, that was including me buying a UMI adjustable torque arm used for $300, and a new ring and pinion for $135, i got the complete center section for $50..that was really cheap, but i rebuilt that for $80, got a full 31 spline spool for $115, a 1350 series yoke for $85, the housing and axle package from quick performance was $1065 shipped( word of advise if you buy it on ebay you get the adjustable lower control arm brackets for free) atleast that is what they told me, it was a $30 option or something like that. and 3 quarts of advance auto parts part synthetic oil for $21, and i got 2 inner axle seals national part# 51098 for $17, and i had to get a conversion u joint to make work, u can get that at napa for $25 i believe the part number is a 447