Jump to content
SAU Community

Recommended Posts

Im getting my R33 GTR engine rebuilt with forged pistons and standard everything else, and i was wondering about cryogenically treating the rotating assembly. Does anyone know more about this process and the results achieved. I would also like to know where in sydney i can get this done.

I understand that it involves cooling the material to -240 degrees celcius so that the grains in the metal realign, therefore destressing the component. Some more info would be appreciated.

Thanks, Shaun.

0414972596

I think they were called the LSW group (02)9708 0888. They were claiming 200-600% in strength and durability. I looked into the process when it was only available in the US.

The companies over there were at the time first dropping the temp of the components down to -240 degrees C and bringing it up to 125 degrees C then back to ambient temp over about 48 hours I think. It is a destressing process designed to negate the micocracking in the metal structure. From what I remember of my metal technology I dont think it actually realigns the the granular structure of the metal. To do so youd have to first heat the metal to about 900 degrees C or so so it becomes semi plastic and hold it there for quite a while to allow dendritic structures to grow with in the metal for extra strength. Then it must be cooled very slowly to allow the entire structure to hold in its present pattern. But its been awhile since I looked into the process and maybe things have changed

Hope this helps

Create an account or sign in to comment

You need to be a member in order to leave a comment

Create an account

Sign up for a new account in our community. It's easy!

Register a new account

Sign in

Already have an account? Sign in here.

Sign In Now


  • Similar Content

  • Latest Posts

    • Welcome to Skyline ownership. Yes, it is entirely possible parts websites get things wrong. There's a whole world of inaccuracies out there when it comes to R34 stuff (and probably 33 and 32). Lots of things that are 'just bolt on, entirely interchangable' aren't. Even between S1 and S2 R34's. Yes they have a GTT item supposedly being 296mm. This is incorrect. I would call whoever you got them from and return them and let them know the GTT actually uses 310mm rotors. Depending on where you got them from your experience and success will obviously vary.
    • Hi...a bit a "development" on the brakes. I spoke to the guys where i get brakes from...and they are saying that 296mm EBC are for R34 GT-T. I then went to their site: https://www.ebcbrakes.com/vehicle/uk-row/NISSAN/Skyline (R34)/ and search for my car(R34 GT 1998 - it has GTT brakes) and it show me this USR1229 number and they are rly 296mm rotors... So now iam rly confused... The rotors i have now on the car are 310mm asi shown... So where is the problem? Does the whole EBC got it wrong or my calipers are just...idk know what?  
    • Oh What the hell, I used to get a "are you sure you want to reply, this thread is XX months old" message. Maybe a software update remove that. My bad.
    • This is a recipe for disaster* Note: Disaster is relative. The thing that often gets lost in threads like this is what is considered acceptable poke and compromise between what one person considers 'good' looks and what someone else does. The quoted specs would sit absurdly outside the guards with the spacers mentioned and need  REALLY thin tyres and a LOT of camber AND rolling the guards to fit. Some people love this. Some people consider this a ruined car. One thing is for certain though, rolling the guards is pretty much mandatory for any 'good' fitment (of either variety). It is often the difference between any fitment remotely close to the guards. "Not to mention the rears were like a mm from hitting the coilovers." I have a question though - This spec is VERY close to what I was planning to buy relative to the inboard suspension - I have an offset measuring tool on the way to confirm it. When you say "like a mm" do you mean literally 1mm? Or 2mm? Cause that's enough clearance for me in the rear :p I actually found the more limiting factor ISNT the coilover but the actual suspension arms. Did you take a look at how close those were?
    • @GTSBoy yeah sorry i know thery are known for colors bud those DBA are too in colors 🙂 Green will be good enough for me  
×
×
  • Create New...