Merli

What a shambles. Unstickied

Got any GTRs I can borrow for the day?

I gotta say that people are getting very skewed in their perspectives if they think that 285awkw is "not being much" That is MORE than enough power for the street and weekend circuit racing Well done Paul

I'll try my best to make it

Hello??? I asked what time it was booked for, not remove me from the list!!! :bonk:

Put it on an engine dyno whilst you have the engine dropped to install sump baffles/extension

What time is this booked for? I have a feeling I'm going to have to work late and may not be able to make this

30psi!!! DOOO EEEET!!!! :uh-huh: It's all about how you look at things For example: If you blow your gearbox, it's a good excuse to whack an OS Giken or a Pfitzner gearset in there If you blow your engine, it's a good excuse to put in that stroker kit See? That should be more than enough incentive to wind it up and see what she'll do :uh-huh:

Marko, I can't remember what the compressor flow map for the GT-RS looked like, but I'd be surprised if you couldn't run upto 1.8 bar (26 psi) on those babies

Oh yes... And a little extra "kick" in case anyone with a couple of GT-RS's tries to pick a fight

The car has made 316awkw on 20-22psi (eBoost was fluctuating at anything over 20psi) on CRD dyno with the same setup plus cams. Should be good for about 330awkw at 24-25psi with the 260/260 cams and proper boost control...

I'm very interested I'm always up for go-karting if I can make it on the scheduled date!! Time to go on a diet

You're absolutely right there :uh-huh: Everyone is after something different from their cars... That's what makes it interesting!! Yah, I built my car/Kabab's car for circuit racing and being tough street bully, so everything I did was aimed at getting as much low down torque as possible, whilst still having a respectable top end. Unfortunately I couldn't stretch the budget to accomodate an OS Giken 3.0L kit Sorry Kabab!

According to HKS's website, the GT-RS and GT2835 have the same size comp wheels :spcow:

Marko, I wasn't intending to put your car down, far from it actually. All I was saying was that GT-RS turbos on a standard capacity engine will result in the engine producing LESS torque than a standard turbo setup on a standard capacity engine. This is painfully obvious for some people, but many people won't actually realise just HOW MUCH less torque the engine will make with GT-RS as compared to smaller turbos. Just as a comparison, the difference between low-rpm torque of Kabab's GT-SS and your GT-RS: GT-SS GT-RS 70km/h - 2500N 2400N 90km/h - 3800N 2900N 110km/h - 5800N 3200N Of course above 140km/h (5000rpm) the GT-RS come on song and make a tremendous amount of torque and power, but no-one is doubting that.... It's the LACK of torque down low (tractability off the line) that I was addressing. I know you can say that ANY turbo upgrade can benefit in increased capacity, but I think it's pretty plain to see that the GT-RS will benefit a lot more than smaller turbo solutions GT-RS turbos are a MAJOR upgrade for the RB26, and it is general consensus amongst the UK tuners who have had access to them for a few years now, that they need a stroker kit to remain tractable for daily driving and are not really suited for circuit racing... If you're just using the car for drag racing, then I guess increased capacity is a luxury, but not a necessity

HKS GT-RS are rated at 400ps each, and have the same compressor wheel diameter as the HKS GT2835 which are only rated at about 380ps each (IIRC). So yes, they are just as big as GT2835s and are MASSIVE low mounts They need a 2.8L or 3.0L stroker to retain low-rpm tractability and torque...

Fixed.

If I had a dollar for every GTR that had dead O2 sensors........... Yes, I knew that the Pro had launch control, but what it does, is cut ignition spark which causes it to dump a ton of unburnt fuel into the exhaust where it promptly ignites and tries to blow MASSIVE flames. Don't use it unless you bolt in a straight through pipe or hollow cat-convertor, because it's the fastest way you can reduce an expensive cat-convertor into a molten lump of restrictive metal Try not to hit the rev-limiter too much too, because it's an ignition cut as well, which causes the same dumping of unburnt fuel. I purposely got the PowerFC Pro because the ignition cut is much much nicer on the engine than a fuel cut which normal PowerFCs use for a rev-limiter.

If I remember correctly, it was part of the purchase contract that you were to wash the car AT LEAST once a week, and have a harem of bikini-clad girls surrounding the car with umbrellas if you ever had to drive it in the rain

Sorry for not returning your calls on Saturday mate, I had my phone on silent from when I went to the gym the night before and only realised when I was out painting the town red Saturday night! Interesting that the car lost 30awkw just from the change back to stock cams... Also interesting that the torque falls over after peaking so early. What boost was this run at? 1.6 bar/24psi right? From all accounts, that's the limit of the GT-SS efficiency curve, so perhaps the camshafts DO make a big difference? It will be interesting to see how the bottom end is affected by the bigger cams. I distinctly remember the car pulling a little harder down low with the stock cams (which is what I was after)... I'll see if I can dig up the old dyno graph of the car with the 260/260 poncams. I'll also dig through the garage to find those cams... I have no idea where I put them after we renovated the garage :-/