Cryo Treated Diff

[S2000T]

Does anybody know about cryo treating the Diff (or is currently running one) as oppossed to a Skyline rear end swap? I don't quite get how cryo treating the diff is going to be of benefit, but would like to explore it as an option.

I don't intend to turn it into a Dragster but want the piece of mind of a little more safety for the odd occassion when i do take it to the strip.

I am running a turbo set up on a JDM S2000 with 340 hp at the wheels. I do nurse it off the line and am more concerned at blowing the Diff when warming the tires pre-race.

Any input appreciated.

[Java Junky]

Aaay T . . . owyadoon pal?
That cryo treatment's a new one on me (but, there's alodda current stuff that's new to this ol' dog) n' I'd be curious if anybody else on the site's got any info on it.
Heat treatin' yeah . . . but cryo? Dunno T, dunno.
Be well.
Java

[Kalm_Traveler]

man I would like to find this out too.... for a few years I don't plan on doing any forced-induction, but I want the peace of mind that I can dump the clutch to launch without breaking my car

[Java Junky]

Dunno Kalm. Jus' seems like the wrong tool for the job.
Two words for dumpin' the clutch: Mus tang.
'Sounds like you're tryin' to extract Cobra oud'a Stewie n' that's only a continuin' supply'a busted stuff. Replace the weakest link when it fails n' you move on to the next weakest link.
N' for what? Even if you could clutch dump successfully without leavin' a trail'a little piecey-parts in your wake, the pimply-faced kid in the clapped out Mustang's still gonna kick yer ass.
Go beat a Mustang up until you've gotten your fill'a clutch dumpin'ness n' then come back n' enjoy Stewie for what it excels at.
Diff'rent critters.
N' in the interest'a fairness: The preceedin' was totally personal opinion n' in no way frowns upon opposin' points'a view. (Even if they are wrong)
Be well guys.
Java

[Kalm_Traveler]

You're probably on the right path, JJ...but as all my buddies on PreludePower have found out over the last 6 years.... simply enjoying something the way it came isn't exactly my strong suit

My old car was a 1988 Prelude 2.0Si 5spd; I swapped in the mechanical 4-wheel steering system, made solid urethane motor mounts, did the typical CAI/H/E mods, high-flow cat, cam gears, clutch & flywheel, hand-ported and polished my own IM, had a TB bored out 8mm, swapped to a 91 trans for lower gears, full urethane sway bar bushings, custom-made STBs.... etc.

And I had a spare trans that was to receive a CTR LSD, along with custom carbon-coated synchros, and an Accord 5th gear. This is beside the hybrid VTEC motor I was building. Ever seen a B20A bottom end with VTEC?

Sufficeth to say, I like taking good things and turning them into better things. It must be the Soichiro in me

or maybe I'm just cocky and always wanting the impossible...
I make you this one promise though. Somehow, somewhere, some way.... my Stewie will have a tuff heiny if it's the last thing we do together

[bobby2002S2K]

Keep it up kalm, people like you are the reason our cars get better. trial and error is the way to go. It can only go the right way in the end.

[Java Junky]

N', in the end . . I also agree with ya Kalm. Truth be told, pickin' which side'a this argument I take pretty much depends on how long I've been without the ability to, well . . . . maybe not clutch-dump, but, launch with considerable authority on jus' the edge'a wheelspin.
Jus' a couple'a weeks back I was moanin' like a . . well, I was moanin' about Stewie's lack'a 'nads.
Some time with my rump in the seat of a '93 Mustang renewed my ability to be satisfied with Stewie for what it is.
So, I may be arguin' with you, but, the "side" of the arguement that I take is like Joisey weather, if you don't like it at this particular point in time, come back in 5 minutes.
I won't even attempt to tell you how many vehicles that I went from bein' satisfied with to dissatisfied with, n' how much time, sweat, plannin' (okay, okay. So I only planned a little bit'a the time), busted knuckles n' wallets I went through. (Okay, okay. Sheesh! So I only planned one of 'em . . kind'a)
'Bottom line is this: it's all therapy. You do whu'cha goddadoo ta get by.
I'll drink ta that.
Be well.
Java

[S2000T]

The S2000 was a great car before strapping a turbo on, but now I think its even better. It is suppossed to be my weekdend car, but I end up driving it to work 3 days out of every 5, just because there is a nice twisty bit on the way and I love feeling those G's.

Plus it will now beat anything factory standard from Ford or General Motors in a straightline, and whips them when it comes to corners, of course.

But Java Junky is right. S2000 drive train wasn't designed for big power, and strengthening any one part only passes the problem along to the next weakest link.

[S2KL33N]

Originally Posted by S2000T

Does anybody know about cryo treating the Diff (or is currently running one) as oppossed to a Skyline rear end swap? I don't quite get how cryo treating the diff is going to be of benefit, but would like to explore it as an option.

Hopefully this will help you: Cryogenics - Facts and Fiction

$100 to treat the gear, Skyline swap will cost time and much $$$.

[Java Junky]

Aaay, 33N, you have any info on that Skyline swap? (Not for me a'course. I have this friend)
Be well.
Java

[S2KL33N]

Originally Posted by Java Junky

Aaay, 33N, you have any info on that Skyline swap? (Not for me a'course. I have this friend)
Be well.
Java

Not sure, but ask these guys: Fifty Fifty Racing

They're the one with the 2JZ swap and I think they went the Skyline drivetrain route. If not, they can definitely answer any questions you have and prolly ran into every problem you can think of doing a 2JZ swap.

Good luck.

[Kalm_Traveler]

last time at the track some guys suggested a 300ZX rear end, claiming that it would hold any stock-ish N/A power, and probably be good to 350rwhp boosted.

I'm currently investigating this. TOnight's runs down the strip made me want to cry... every single blasted one I hit 15.7xx. 2 weeks ago I was able to run a 15.327 @92.8. Stupid Utah and our high elevation desert!

[S2000T]

Thanks for the help L33N. You sent me in the right direction and I have found the info I was looking for. The serious Drag guys commonly use Cryo treatment for diffs, gearboxes etc. They reckon it strengthens and stretches the life of parts. Costs $100-200, so a lot cheaper than an after market diff. Reckon I'll try it and see if it goes bang.

Regarding Skyline/300ZX swap. I think it wouldn't matter alot. Skyline would probably be the pick due to the availability of aftermarket gear. I know of a guy that did it in Australia but it took a lot of work to get it right and didn't end up being cheap. But he has a bullet proof rear end now and is currently running in excess of 450bhp at the wheels.

[S2KL33N]

Originally Posted by S2000T

Thanks for the help L33N. You sent me in the right direction and I have found the info I was looking for. The serious Drag guys commonly use Cryo treatment for diffs, gearboxes etc. They reckon it strengthens and stretches the life of parts. Costs $100-200, so a lot cheaper than an after market diff. Reckon I'll try it and see if it goes bang.

Regarding Skyline/300ZX swap. I think it wouldn't matter alot. Skyline would probably be the pick due to the availability of aftermarket gear. I know of a guy that did it in Australia but it took a lot of work to get it right and didn't end up being cheap. But he has a bullet proof rear end now and is currently running in excess of 450bhp at the wheels.

Glad they can help! Definitely let us know how it goes! I changed out my diff. to 4.56 because I broke 3 teeths off the stock one. I didn't cryo-treat mine because I'm not launching or popping the clutch while down shifting.

You can go through hardtopguy.com to get both the gear + cryo done, or throw comptech pumpkin too if you money on fabricating a rear end anyway.

[Kalm_Traveler]

My dilemma is that I don't want to change the gearing at all - just want to not have to worry about driving too hard that I'll break the diff housing.

It's aggravating to go from a FWD where all I ever broke were sway-bar end-links, to this "nice" RWD car that has a paper diff case