Futofab wolf creek z car garage Porsche axles

[240ztino]

What's up guys I have a 72 240z with a 500hp ls with a t56 transmission with 275/60/15 Hoosier dot tires  I currently have a r200 with a kaaz lsd with 89 300zx turbo axles I keep breaking the driver side axle with the 2 step at 3300 rpm launch has anyone had any luck with the  Porsche style axle from futofab 108mm or wolf creek or z car garage has anyone broke any and how I'm wondering if these axles can handle a 5k launch any help would be appreciated thank you

[datzenmike]

Why would you launch at those RPMs with a 500 hp engine? Broken equipment is trying to tell you something.... like they were designed to run 200 hp through them not 2 1/2 times that. Get narrower tires like 225/75R15 or 4.11 gears that will spin the tires easier and take the shock load off the axles. Maybe a custom shortened Ford 9" and some leaf springs.

[240ztino]

I was told them axles could handle 500hp🤷‍♂️ but I was also told them after market Ebay axles suck.and I also hear that them futofab axles will handle the power regardless of what rpm launch. im just trying to find someone with a current same set up who's running them axles to see if there worth the 1400 investment.i like to race my car and I'm trying to keep it irs and I'm trying to stick with a r200 if its possible still lol 

[datzenmike]

Must be drag racing. IRS is no good for that.

[thisismatt]

Plenty of new cars putting down more power than that with irs, so it certainly is possible. Can't answer the ops question though 🤷🏼‍♂️

[datzenmike]

They can but for straight ahead racing a solid is simpler and better. All kinds of toe in and camber happens on an IRS under load.

[]2eDeYe]

Porsche 930 CVs are what they are using in Ultra 4 cars and some trophy trucks. Should be ok in a Z-car with HP and a heavy right foot.

 

Ebay special of anything is another thing entirely. 

[240ztino]

I was thinking the same @thisismatt look at the vette etc it IRS not the best but it'll do 

[hosestop@msn.com]

I have some Vette rear diffs with axles wanted to put in ls1 Zcar have three for sale .

 

[Stoffregen Motorsports]

The 930 CV name is thrown around so much these days, I wonder if a lot of them are cheap knock-offs. I do know that 930 CVs for Ultra 4 are very expensive.

 

Kartek sells 930 CVs from $30 each to $250 each, so there are obviously massively different levels of quality.