Blown77Z

Mine would fall out the same way ! I went to a local hardware store and had four 3mm rubber o-rings made (2 per axle). I'm going to put them on top of the end stops inside their lip and sandwich them in between the Q45 housing and their coresponding flanges to help put some tension on the end stops so they don't move out those 3mm or so. The rubber o-rings will fit inside this lip here:

The end stops are installed with the RAISED portion INSIDE the Q45 housing towards the axle. The end stops should be spinning along with the housing assembly itself, why yours has the marks they do is interesting to say the least The MM axles are of equal length, although I never measured mine when I received them.... I still need to fix my passenger side problem I'm currently having, maybe tomorrow BTW, are your end stops loose fitting inside the Q45 housing???

I will post an update soon. I just bought my daughter (and myself ) a 2 seater go kart to play around with so my car time has been limited...

Yes, they are the same. Call them around 1-2pm or so. I just ordered my driveshaft from them a few weeks back

JCI: Phone:(214) 426-4100

As you already know, the Q45 has a lip where the end stop rests inside the housing. When the axle hits the end stop it pushes the end stop to the outer edge of this lip causing the axle to move further than it should. If I can get the tin cap back in it should prevent this from happening.. Here's a picture of the lip on my axle with NO tin cap installed, the axle is pushing the end cap to this outer lip until it hits the companion flange edge. Hope I made sense describing it, lol.

You put the stock tin cap OVER the end stops and snug fit them in??? I didn't catch that in your earlier posts Wow, I feel dumb now......... I shortened the length of the control arm is what I meant to type earlier BTW, I have a part number for the retaining ring for reference as well. I have bent these before and had a hard time sourcing them. Part # 281-14 http://www.rockfordcv.com/PDF%20Downloads/Retaining_Rings.PDF Reference image

I have a part number for the retaining ring for reference as well. I have bent these before and had a hard time sourcing them. Part # 281-14 http://www.rockfordcv.com/PDF%20Downloads/Retaining_Rings.PDF

Jay what rear end / CV setup are you running? I'm having issues with my passenger side axle for my Q45 swap popping out on me atm

Moving the control arm inward about 1/4" or so did not work by itself. I double checked the movement of the axle and it was not bottoming out while the car was sitting. Do the axles move from side to side when the car is moving? I reversed the cage assemblies on both sides of the axle, but I have to wait until I receive another Q45 assembly before I can test it again, since this one got chewed up this time... Mark, do your end stops move at all, or are they air tight??? Mine are not air tight and will move with no resistance what so ever.....

Mark, thanks for that thought ! I have not had the rear end alligned yet, because I can't drive it, so I have no clue what the allignment is atm or how close it is to stock.... I will move the control arm in some more to redo the CV housing and see if that holds. I have thought about reversing the cages as a last resort, but I'm going to move the control arm inward some more first to see if that fixes the problem. Thanks

I got a new keeper ring, installed it today and the axle still popped out of joint..... IDK what the hell is wrong with this axle. The only thing I can think of is the Q45 housing is somehow warped and is letting the ball bearings/guts spin INSIDE the housing itself. I'm going to buy another Q45 housing and go from there.

These photos bring back terrible memories about the crash I had with mine with only a month of finally having it on road.... Hope everyone involved is OK. Like everyone else said, cars can be replaced.

Yes, the end stops are installed correctly with the raised portion inside the Q45 housing, lol. I talked to Ross earlier and he told me some of the end stops will be a little loose because of the way they are made, and in the past they have been made to large and would not fit. I need to double check the bearing assembly to see if I reversed it somehow when I installed it.....

Woot, I just bought my "new" metal ring from 1 tuff z, thanks dude ! I just went outside to mess with the axle some more and noticed the end stops on BOTH ends are loose fitting and move when I bottom out the axle on them. NOW I'm thinking my problem might be because the end stops move along with the axle and are not stopping it......

Mark, I have the axle end stops installed in the housings......

My "fix" did not work.... The metal ring that holds the cage assembly inside the Q45 housing popped out again. I took a look at it after I removed it and it's bent to hell now. So, I have to source another one and hopefully won't have to buy another Q45 axle to get it.... Does Nissan sell these by themselves? On a side note, I measured both sides of the diff to it's corresponding companion flange and they do not match, the passenger side is about 3/4" LONGER than the driver side. Are both sides suppose to be of equal length?

Today I was suppose to have the rear tires alligned...... On the way to the shop, I heard a clunking sound from the passenger side axle area. I pulled the car over and noticed the outer boot had twisted itself around the axle.... meaning the INSIDE cage and ball bearing assembly had spun around So, I limped the car home, took the axle off to disassembe the outer boot. When I popped the boot off I noticed the large metal ring that holds the cage assembly inside the Q45 housing had come loose and popped out of it's groove !!! My theory is this metal ring was not fully seated in the groove when I installed it and had popped out allowing the cage assembly to come out to the edge and start to spin a little. I repaired the metal clip and made sure it was snug inside its groove, added more grease and reinstalled the axle. I'll test my "fix" tomorrow to see if it works................

I just recently finished up my Q45 rear end upgrade on my 280z yesterday I've been working on this swap for about 5-6 weeks now. It's pretty straight forward once you have all the necessary parts in order. I basically changed out EVERYTHING in the rear to limit my chance of having to do it over again, lol. Unfortunately I did NOT have a digital camera that worked at the time I had everything apart Ross from Modern Motorsports (MM) was awesome to deal with ! THANKS !!! www.modernmotorsports.com Details on the parts: 1995 Q45 R200 VLSD w/ new poly bushing kit 4 Q45 inner axle assemblies w/ new boots installed Custom MM axles MM billet companion flanges MM R230/R200 Diff mount kit MM Adjustable control arms New struts New spindle pins, lock bolts, nuts and washers New brake shoes (Upgrading to disk brakes in future) The MM pieces are VERY well made and bolt to the car like it came from the factory with it ! VERY pleased with the items I did a lot of research on the swap to make sure I purchased the right items needed. It was a fun learning experience for myself, which enabled me to better understand how the "rear end" of the car works, lol Now off to the dragstrip on Sunday to see what she does