Nice result and all that but I thought the purpose if this thread was to demonstrate the benefits (or lack of) in fitting the larger intake kits?
Hmmm throw the car on a rolling road dyno here and I'll be the return car freight that those results that it wouldn't produce the same results... So what's the difference? I'm not out to be a wet blanket (the car is obviously kicking arse) but while we're drawing comparissons...
It is but as I said we ran out of time to do any comparison testing on this car yesterday, The results do show IMO that there is something to be gained from the intake kit and/or the boost pipe kit, in the past it has been an absolute shit fight to get much more than 400Kws at the wheels - as Mad Mikes car has continued to show. In fact there is a fairly good comparison right there, same turbos, similar engine work, one car with stock sized intake and boost pipes but twin three inch exh. The other with 2.5" intake kit and boost pipes but only 2.5" exh. The one with stock sized inlet and boost pipes is struggling but the other is doing it EASILY with more to come no trouble at all, the one with stock boost pipes has very high inlet air temp compared to the other - that's where the bulk of the extra power comes from I'm picking. We need to find out if it's the bigger pipes or the work done on the intercoolers that is the biggest gain. Still early days and sometimes things are not what they seem, I still need to get back on the dyno and test more to try and establish exactly what gains are had from what.
To be honest I hate rolling roads and feel they are utter shite when you want to get accurate repeatable results, they are OK if you want to tune the car and just want the mixtures etc correct and OK for lower powered cars but completely useless to try and do comparisons internationally car Vs car. We've done a number of comparisons from hub dyno to rolling road and hub dyno to hub dyno, the only dynos that stand out from the crowd with having numbers very different to other dynos are rolling roads. If you pick a target power and a car with that then truck it around the country testing all the dynos the hub dynos will all be within say 5% of that power, SOME of the rolling roads will be within the same percentage but others will be down or up by as much as about 15%. People claim rolling roads give a more accurate representation of what your car puts on the road, the road is not a rounds steel drum with teeth cut in to it for traction and on the road you do not have six twenty litre drums of water and three mates in the boot and a couple of strops holding the tyres on the road. I posted the power results here for people to make there own thoughts on how things are going, the fact that this car has all the goodies on it and made good power with ease speaks for itself IMO When the car is finished and ready to go back to the owner I will post a thread about it then, THEN people can argue that I farted into the intake and the methane made the car more powerful etc :rofl: As it stands we have two cars here in NZ tuned by the same tuner with the same ECU, the same fuel, very similar engines but varying mods both at about the same power ~385Kw this was tested on a rolling road as well on one of the cars & gave the same power. We have a third that stands out from the crowd with only the intake and boost system being the stand out difference, I intend to sort the fuel issue on my own car then dyno and then add intake & boost kit then dyno again, wont be the same day though.
Plugs are brand new PFR6B11Bs gapped at 0.030" Cams are unknown but fixed with adjustable cam gears not yet dialled in - a LOT of potential as yet not taped in to. Heads are ported but I can't recall to what extent, I did not build the engine, I just bolted on a bunch of shiny go fast bits, exh manifolds were ported by myself.
Hate to say it mungyz but you pointed out before that there was a fueling problem. While I am not saying or asking in anyway that the comparetive testing has to continue or even should continue now that you have changed the fuel pumps I feel the comparisons are not equal. for all we know you could have got more from the stock system with better fueling as well. I will say however that this is a great result and I applaud the work put into this engine to get it here. good stuff boys.
This result is on another car, sorry if I didn't make that clear, if you ignore all the other posts in the thread and just follow my own then it does actually follow through and say that the kit I was testing was for another car and that that car is now running and so off to the dyno
my bad...... obviously missed that fact. and yes I have been reading the whole thread and following it as often as I can. so everyone ignore my ranting and mistakes.
:rofl: I didn't think that was a rant mate When I get a little further down the track I will do a "cliff notes" post so we can skip the clutter and have just the cold hard facts laid out in an easy to follow format
465rwkw on 18 psi even with race fuel, with out Nitrous is a happy dyno, or the missing link in physics. Correction factor on dyno must be . . . . ? Also why stop at 18psi? What would it make on 25psi? Take it to the drags and show me mph.
No offence intended John but go back and have a careful read, have a look at the photo from the dyno screen (taken by someone who would call us out immediately if we had fiddled anything by the way!). There is no tom foolery or lies and deception etc here, just the cold hard honest facts, the good and the bad. The dyno used is a Dynapack hub dyno - one of the best dynos money can buy, it reads the same as the other Dynapack hub dyno I use here in Hamilton, they both read the same as at least two other dynos that I know of that are rolling roads. (one in Hamilton and one in Tauranga) No happy dyno here just unhappy campers as records will fall PLEASE I want this thread to stay on topic, the power output isn't actually the point here, it's the difference in power that is critical.
Sorry but all i see is a typical NZ dyno result there........severly inflated figures and i'd bet money that car won't trap anywhere near what would be required for 465rwkw. I've seen a shitload of NZ results and sorry to say i believe they're all inflated, just like a few NA's doing 180+rwkw yet trapping ~94mph LOL! Just my 2c, don't mean to offend but that's the way i see it. Still interested to see your final results with and without the pipes.
Sorry just to clarify are you saying that all the dyno's in NZ are faulty and the Australian ones are accurate or that all the tuners in NZ are dodgy and the Australians ones are not? Out of interest way over NZ$30 000.00 has been spent on building that particular engine. Do you think 465Kw is or is not achieveable with spending that much? Thanks.
Not saying they're dodgy, i'm saying you guys seem to be closer to "US" dyno figures than AUS dyno figures. Over here those numbers would be hard to hit even on E85. Just because it has had 30k spent on it doesn't mean it will make that much power......ultimately the turbos will have a hell of a time trying to push that much air.....no matter if he spent $30k or $300k.
engine itself is probably capable of 500rwkw no prob. moreso the capability of 2 baby t28's pumping that much volume of air . running high lift solid cams? fuel used?
It is running the Z1 GT675RS Turbo Kit, BP 98 octane, Tomei cams but unfortunately I am not sure on the specs but they do sound good. The guy that owns it is not that interested in taking it to the track or drags yet but if Mungyz wants to take it down the strip that could be organized when everything is finished. The way I see the time could be affected by a few factors including how good the driver is, traction control, gear changes and reflexes.
Its not the end time that is of interest but the MPH. Trap speed is a better indicator of power than a dyno will ever be. Dyno's lie, the blacktop doesn't.
So what exactly are you saying is lying on the dyno? It has to measure only two things: RPM - so damn easy it's not funny ESPECIALLY with a hub dyno, far harder to measure accurately with a rolling road. Torque - a couple of load cells or hydraulic pressure senders, again very easy to do these days with an accuracy far greater than you will imagine. From there it's a simple mathematical equation - computers are normally fairly good at maths so I doubt they are getting that wrong. I'm thinking it's time for the blue car to put on some new shoes and head to Taupo, the strip at Meremere is crap & that is why you see low trap speeds in NZ. Anyway enough of this crap in this thread, it stops right here right now please. Those who want to discus dynos again for the fifteen billionth time please go and start another thread
Not with those turbos. It's cool, I don't think anyone is suggesting foul play, just that if you put the car on a dyno dynamics rolling dyno in AUS that it wouldn't produce the same results. Doesn't mean that anyone's dodgy, just that we need to be careful when drawing comparisons.
