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R32GTR/Iceland
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Powertune Australia Contributor

Powertune Australia

Posted
Posted

I don't think it's a case of how long it will last, moreso how it will break. We pulled the head off on the weekend, pistons were absolutely mint, no detonation marks at all.

We're thinking it will be conrod or gudgeon pin related when it fails. Either way we're looking forward to seeing how.

It is our development car, and we have a BC 2.2L bottom end assembled ready to go when it goes boom!

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SimonR32
SimonR32

The 6262 sillyness is never ending... New cams just got the most power and torque it's ever made

SimonR32
SimonR32
Mick_o
Mick_o

Dale is 100% correct its a well proven fact that smaller cams in RB's aid in response. Even going from a stock cam to a type b pon cam will cost you response. Been many track guys that have thrown the

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SimonR32 Grand Master

SimonR32

Posted
Posted
As mentioned previously, we will offer free tuning to a donor RB25DET owner wanting to put one on a 5557 purchased from us. Don't be shy guys :verymad: If we had an RB25 as one of our project cars it would be on it!

Other side of Australia so no chance of that haha

What are the housing sizes on these things like, I assume you would need a spacer to bolt onto a standard RB25 manifold?

Powertune Australia Contributor

Powertune Australia

Posted
Posted

I tried (not to that extent) with my 3037S with a 1.12 a/r rear. It made 376kW on 25psi on my SR, we didn't got further as the boost line started to fall. I think that all I would have been doing is overspooling it.

Rolls Grand Master

Rolls

Posted
Posted
I don't think it's a case of how long it will last, moreso how it will break. We pulled the head off on the weekend, pistons were absolutely mint, no detonation marks at all.

We're thinking it will be conrod or gudgeon pin related when it fails. Either way we're looking forward to seeing how.

It is our development car, and we have a BC 2.2L bottom end assembled ready to go when it goes boom!

Very interested to see the mode of failure when it does go, could you post a thread up for all of us to see if (when) it does fail?

dori34 Grand Master

dori34

Posted
Posted
As mentioned previously, we will offer free tuning to a donor RB25DET owner wanting to put one on a 5557 purchased from us. Don't be shy guys :) If we had an RB25 as one of our project cars it would be on it!

Wow, good offer kemp, someone should take up on this offer :D

  • 2 weeks later...
Powertune Australia Contributor

Powertune Australia

Posted
Posted

Just to let you know guys, we are now offering the 62 and 67 range with divided split pulse T4 housings. This is something new from Precision, I'm sure it will make it a lot more attractive for some of you with twin scroll setups! We have .84 in stock and are able to offer 1.00 and .70

  • 2 weeks later...
Powertune Australia Contributor

Powertune Australia

Posted
Posted

We supply the whole billet range from the 5557 to 6765 comes with a 0.70 a/r comp cover, however we can special order the non ported covers which have a 2.8" intake, as far as I'm aware they are a 0.60a/r front, similar to a 3076R in size.

  • 2 weeks later...
Powertune Australia Contributor

Powertune Australia

Posted
Posted

Well after some Friday arvo beers I managed to Gee the boss up pretty hard, basically I stressed that there was no point in us going out to get kicked off for a mid 10, let's try to run a 9....

So, I came back around 30 seconds later with a 6262SP in hand and it didn't take much convincing. Friday was a party here at Powertune, music cranking, cashews, chips, and within a very short time the turbo was on and the Red Dragon was getting reversed onto the rollers.

Had a solid 5 passes on the dyno, but we knew the 6262 needed a bit more boost to get it in the zone, though 45psi didn't agree with something in the engine! It filled number 2 and 3 with water so we're thinking it's either lifted the head again or cracked the block around a water jacket.

Anyway, I've rocked up here this morning and the engine is out, and 2.2L stroker in ready to go, in fact they're finish up the install of the built engine now with the 6262SP on. Get ready for round 2 :)

ncsd5.jpg

Powertune Australia Contributor

Powertune Australia

Posted
Posted

We were getting frustrated with it living :)

The other passes were on a lower boost setting

Well it copped the initial load, then unleashed the tyres with 3 of us in the back which it has never done, it did hold 45psi flat though.

It would have definitely been over 430kW, I'd say 450kW at a guess. Sadly we'll never know!

Will keep you updated when we crack it open to find out the truth

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