Bigdeezs

I've been following for years as well. You do great work and this is probably like feedback in general....if no one says anything you are doing well but then it just takes those one or two knuckle heads to ruin it for everyone else who enjoy seeing your updates here.

given the new information....my statement stands

awesome

this guy and his "new" fuel system ... more like secondary boost referenced fuel system that takes over spraying whatever fuel you choose, so regular fuel out of boost and race gas in boost ...think NRE (Nelson Racing Engines) !

Sorry to jump on the LS bandwagon but put the LS in for "resale" reasons and then drive the car at track as a last hurrah. We'll see if it gets sold after that. My cammed LS1 has been solidly putting down 420 hp for years without issue except a spun rod bearing on a 140k LS1 that saw probably 50 bottles of N20 and countless 500whp passes in my 3800lb Blazer before it was ever put in the Datsun. The Datsun does nothing but hard canyon driving, track days and sporadic straight line racing all while demolishing GTRs, Corvettes, Lambos etc in all of those areas. I have about 13k in it and I've had failures around the motor and that's about it. Most if not all the problems you've seemed to have involve that SBC and supporting equipment.

^^^^ Very much enjoyed reading that enjoyed that Cobramatt

Maybe drop the shot a bit to 100 or 75 just to keep it planted...? What tires you running?

oh man...any vids?

Awesome results! I'm suprised the Walbro is capable to that level. Cant wait for track #s! I been a bit leary to run the N2O on mine.

^^^^LOL^^^

badass

Thanks for the heads up Clive...That axle angle combined with cornering forces is exactly why I dont have much faith in this spring idea. I considered welding a ring in the CV housing itself to stop the balls from popping out but my buddy suggested the spring idea to me and I figure since i have some stock LS1 valve springs sitting around may as well put em to use. Hopefully this will shush up that knocking too

Clive, that would allow the axle to travel too far...which is the main problem. The stop is what keeps the axle from popping out of the CV housing at the other end of the axle...as it wears (or if I was to cut it down as you say) that axles slowly gets closer to the end of the cv housing eventually popping out and causing a ratcheting sound as the balls skip past their slots. Like this:

Well I suffered another axle failure this time with cages installed correctly. The weak link is still the axle stops. I hadn't had any failures before running coil overs and 275 NT01 tires. This leads me to believe that the increased cornering forces are causing the wear to increase rapidly as this time I only got 2-3000 miles out of the stops. I also noticed the axle stops on the outside (wheel side,not diff side) are the only ones with significant wear due to the axle being flung at the stop upon transitions (like being at the outside edge of a spinning merry-go-round). I've always heard the axles banging around when driving spiritedly. I have welded some old valve springs to the axle stops in hopes of reducing the impact forces as well as to try to keep the axles centered. I don't have high hopes for this arrangement but I'll give it a shot.

whoa...when was the N2O added? NICE

fwiw I have been running the VW Sirocco/rabbit/jetta F4-P30-0032-M0 shock with shortened strut tubes for about a year now with out changing the stock valving. I'm using 250 Front and 275 Rear In/lbs springs. Many spirited runs through the local mountains and a couple of track days to willow springs and these have felt great. I was using a 235/45/17 continental tire and they seemed well matched...but I went to a 275/40/17 NT01 and the car feels under sprung. (no rear sway bar and stock front) Just figured I'd contribute my 2 cents

I went to the track about a week ago and cut few 1.6s and a 1.5 on my LS6/T56/Q45 280Z on Mickey Ts. I know ColtGT4g63 was doing the same with his T56/Q45 setup. Do you think the diff being welded may have something to do the breakages? I was thinking that all that power is likely being transferred to the right rear wheel (right side axle the one that breaks?) under load snapping the shaft...maybe having the viscous coupling or some other sort of LSD would keep from loading up that right side too much? I bring this up because snapping an axle was on my mind after reading your thread then going to the track. I think the 8.8 is an awesome upgrade but I'm hoping us Q45 guys don't have too much to worry about ...lol

...and the badassedness continues

how much $?

two very important things in a mans life

Much appreciated Josey...I already put it back together tho..thankyou. How did you end up with 1 anyhow? incorrectly mounted cage left...correctly mounted cage right

After pulling the driver side axle to see if it had any damage as well...I realized that the cages had been installed backwards on the damaged axle. I believe this is why the axle stop is so excessively worn. The axle stops on the good axle (correctly installed cages) were in excellent condition. It also effectively shortened the axle enough for the balls to come out of the CV housing and cause the wear and ratcheting. A friend of mine assembled that damaged axle for me but did not have the luxury of the pics in the first post when he did it...oh well live and learn.

Well, after ~8000 miles of very hard use, my Modern Motorsport (MMS) axle/Q45 CV setup has given out. Well technically just the MMS axle stops gave out . The axles have been banging around in the CVs under hard cornering for quite some time and I knew something would give eventually. I was at Streets of Willow when a terrible vibration/ratcheting began coming from the rear when accelerating out of right hand corners. The "axle stop" (on the left) used to be a flat surface where the circular indentation is worn. This wear allowed the axle/cage/balls to travel outside the CV housing's slots. I think I might try welding in a ring in the worn area (where the retaing clip used to be) to limit the balls ability to travel outside the CV housing grooves. Basically creating another type of axle stop.

this one http://sphotos-b.xx.fbcdn.net/hphotos-ash3/562878_10151182254137112_1609989583_n.jpg

your setup has to have some of the least amount of plumbing possible...lol