Got Over 400kw Atw?

[NYTSKY]

That is extremely conservative for such a big turbo.

Seems to be pretty responsive though. Twin scroll?

[SCR48]

T4 1.0. Standard box still

[NYTSKY]

Standard boxes are strong enough.

[SCR48]

I'll see how it goes over the next few months and go from there.

I've got oil cooling problems and such to deal with first

[The Bogan]

Standard gearboxes are fine if you run normal street rubber or drive like miss daisy, but when you throw on some Drag Radials or Semis when they are at temp and use that over 400kw in anger things change in my opinion.

Well, this is from my experience of 2 very sick gearboxes and others I have known with some big powahs that get used in anger that is.

Some guy on here has a shop that hardens the cogs with some chemical or magical dust or something, might be worth looking into that if you plan on using the powahs in anger.

Piggaz is looking into a new box, might pay to see what he has to say as he does a lot of research on his car parts and he doesn't baby the thing.

Got to love big torque.

[Marko R1]

Might be cryogenic treatment to the gears

[GTRPSI]

I dont think even cryo is enough when driving in anger with slicks and over 400kw, some aftermarket boxes use hardened larger input shafts to take the beating, wider gear sets to transmit the load across a wider tooth etc amoungst other things..

Id say the best way is to go auto if its a drag application with hard launches.

Problem is saying auto and GTR in the same sentance is like getting your left nut cut off.

[ido09s]

I ran close to 60 passes in the mid 11's on ET Streets with a stock R33 gtst box. Wasnt until the car got a 2 step and the mechanic at the time decided to 2 step it into the burnout in third that it finally gave up. Next to nothing left of third. That was always running a twin plate clutch and 7000rpm plus launches

We ended up putting an OS 1st to 5th set in it, hopefully it lasts

[B-rice]

gents have any of you guys here installed metal gaskets without machining the block. Its just a pain to take it out and have it machined. I am chasing 400kw eventually from the engine. RB25neo.

[Piggaz]

Going by matts NEO, you shouldn't need to.

[scotty nm35]

Simply Hylomar spray the MLS gasket before fitting it. Should be fine if you bolt it down hard with ARP studs.

[4bidn1]

Like scotty said! studs, hylomar , and a very good scrape clean.

You will be fine

[SiR_RB]

Definetly head studs if your gonna be running high boost

[33GTRV]

I dont have a dyno sheet, buuuut, I made 447kw at 5850rpm and 1120ftlb at 5670 with the 2.8 and 6466 before we lifted the head. Ill have more results by the end of january subject to a head bieng taken off.

Lights the tyres on the dyno. Was teh lulz watching the operator shit himself

[tricstar]

Might be cryogenic treatment to the gears

just tried that.. didn't last one Rally Sprint..

[SimonR32]

just tried that.. didn't last one Rally Sprint..

You're clutch is savage!

Have you got short shifter?

[tricstar]

Yeah savage clutch. No short shifter.

Might try it again after I change clutch. The Cyro itself only cost about $300

[Marko R1]

Triple plate? They suck.

I've heard short shifters do no good, just like a short skirt on a fat hefa.

[SimonR32]

Triple plate? They suck.

I've heard short shifters do no good, just like a short skirt on a fat hefa.

Richard has a OS Giken R3C (ally plate) which seems to be very savage, I have a TS3B (steel plate) which doesn't "suck"

[Marko R1]

Mine had the alloy plate and that was absolute rubbish...I dont know why I put up with it for a few years.

When I sold it, I was told that OS supplied the incorrect thrust bearing, being a smaller diameter bearing was too aggressive on the diaphragm fingers.

Edited December 27, 2013 by Marko R1