Safe time, money and skip the upset stomach......................

There is no need to break in the gears with the figure 8s. That is only neccesary for plate type diffs.

Assuming that there will be metal chips coming from the brand new gears is ridiculous.


Thanks for the pics. Is gonna be a big help.

Onno

 

Long story short - dude drove from laredo cause he saw my DIY and wanted me to install his Quaife LSD. Well he got bearings from Oreilly and they were WRONG. NO one in DFW had them in stock cept courtesyparts.com - BUT they only had one. Snagged that one - and got some new tools from Harbor Freight and did my best. - OUTCOME - a smiling customer who already gave up on getting the install completed.. Ballin! :biggthumpup:

Mannys Car - NIIIICE


LE37s with a +12 offset


FRONT side shot


Open DIFF out..






Jason Z-YA - FRANKENSTEIN SOCKET FTMFW!!!!!!






completed - used Bearings off of his Diff and put them on the Quaiffe.






The look on his face when we went for a ride was Priceless.. worth the time and effort I put into getting this job done.

 

So I cant seem to get my Quaife to go back into the case all the way. It seems bearing on the backside of the ring gear wont seat. I think it has something to do with the teeth on the pinion and ring gears not meshing. It the same ring gear from the old diff. Any ideas? I'm stumped, I try to rotate the gears as I put it in and it doesn't help.

Thanks guys.

 

dead blow hammer dont help any...? a few taps and it should go in...

dont forget about gear marker to make sure your spot on.

 

Gear marker? I'm in the dark on this. I see some marks on the pinion gear thats the only think I can think of. This sounds bad. Please explain.

 

So it seems I had a bad case of the miscommunications. I was sold a 3.3 gear ratio diff typically found in Automatics under the guise that it was from a manual G35. Be aware that to my knowledge there is no such thing as a automatic 350z with an open diff, however that is not the same for the G35. Apparently the 3.3 gear that comes with the automatic cars is 10mm wider which caused major fitment issues when combined with the quaife model I bought. It was clearly meant for use with the 3.5 gear ratio set.

That being said, I pulled the diff out of my Z and just did the swap that way with no problems at all. Be careful when buying an extra pumpkin from auto wreckers if you plan to build this final drive assembly while still having you car to drive every day. I have to say, the Quaife is absolutely worth every penny once you get that puppy in! Thanks for the help guys!

 

Yeah! Thank you! I guess the moral of the story is pay attention to detail and trust but verify. So far I am loving this Diff! Your DIY was insanely helpful! Thank you so much for putting it together.

 

Acid Do you know what the torque rating is for the pinion nut? I've tryed searching but I cant find it.

 

So there is no process of setting backlash after the install with the Quaife?

 

any LSD install involves setting backlash - the ring gear has to come out of the car as part of any differential installation, as it bolts to the diff

 

Gotcha - thank you. That's the part I feel uncomfortable with (setting correctly) and I didn't see it addressed in the DIY unless I missed it.

 

^^^^ just use gear marker on the ring gear - I didnt need to use any shims or anything - just made sure it was spot on.. Use link below for reference on acceptable patterns..

http://www.differentials.com/install.html

 

I was wondering why no one mentioned shimming until this page?? I guess a re-shim would only be required if the ring and pinion are changed?
Nice install guy's!!! I wish i did mine myself, but my diff was rebuilt entirely... Everything was replaced but the pumpkin.

 

It's my understanding that for Zs with OE LSD (which is all Zs except base models?), the OE stub axles are not compatible with the Quaife QDF11L (for manual transmission cars) and that appropriate stub axles must be installed along with the Quafe. What do the required stub axles cost and where can you get them?

 

I have flanges from a open diff if you need them.

 

Flanges? That doesn't sound like stub axles, so I'm not sure what you're getting at.

 

QDF11L is the diff for base model cars. Quaife offers a different part # for 03-most 06 cars with factory VLSD as well. Some 06, 07 and 08 with VLSD may need their output shaft/flange/stub axle/whatever you want to call it trimmed down by a machinist, and we include the instructions showing exactly where this needs to be done (Nissan in their infinite wisdom uses a bunch of different output shafts even among VLSD cars....sorta annoying)

 

Can I drain the diff fluid before I pull it out? Seems like that would be easier than holding it while it drains

 

^^^sure...

 

Can I use the same oil grade listed in the owners manual when I install the Quaife?