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I reckon Danny/Paul and myself have the most powerful 2.0 - 186bhp ATFW - I take it were measuring at the wheels - dont really matter any way coz the losss will be the same or thereabouts for most modern engines due to friction and heat etc. I have the most powerful 1600........137BHP at the wheels............
No im only using Pauls as a go by so to speak - must get mine tested but dont know any rollers over here - wait till i get the Grp N filter in and then Ill see but |I reckon the cups are pretty much even across the board power wise!
You cant acurately, but the best youll get is going on an RR that does run down, where once the car has reached peak revs its thrown into neutral and the rollers calulate the resistance of the running gear as everything slows down again, this figure can then be used to estimate your flywheel figure, but it is only an estimate at best, and a complete lie at worst
We need to have a dyno day, where a team of trustworthy mechanics take our engines out and run them on a test bench, then we can get acurate flywheel figures LoL (Oh, and of course put them back in again, once Ive pinched the best one )
Nothing that would lead me to believe that 188 is accurate really (although you never know I suppose). Magnex cat-back, Pipercross filter, Cliosport sticker and Silvervision bulbs. I always said the sticker was worth 10bhp - wow I was right! One of the Cups came out almost the same as mine on Saturday, and Wayne got a few hp more.
I guess that unless you do a RR session before you do any of the mods you never know what you had to start with.
Am I the only person thinking this is utter rollocks? Dont mean to cause any offense, but here goes!...
a) You cant compare outputs off different rollers!!!
Case in point: I got 131.5bhp ATW at John Nobles in Chesterfield over a year ago - yet I could stick like glue to the back of Mikes 159.3bhp ATW motor round Donnington and I aint a good driver! On a high-speed track like Donnington, my cars (slightly) taller gearing shouldve hurt me on acceleration down the straight, if anything - so I cant believe theres honestly a 27.8bhp difference between our cars... He should have destroyed me if those figures were actually comparable. They arent. Different rollers get wildly different figures - and dont forget that your car has good / bad days so maybe your car on the day was performing markedly better / worse than normal?
b) Cupsize says that "Danny/Paul and myself" have the most powerful at 186bhp, yet then says hes not even had his near the rollers - how the hell do you know what youve got then mate ??!! Also, how on earth did you get a 1.6 16v to put out 137bhp ATW then without a hefty dose of laughing gas? Thats surely around 180bhp ATFW - sh*t, even Renault can only get 220bhp out of it for their Super 1600 - your talents are clearly being wasted!
c) As was mentioned earlier, take out your air-conditioning compressor and youd be pretty surprised not to see around 5-6bhp increase in output. Hang on, what a surprise the Cups seem to put out a little more than most 172s... Whod have though eh? If someone thinks the Cup engines are in some fashion mechanically different, I think theyre deluding themselves - the Cup is the cheaper model aimed at Trackday enthusiasts who dont want creature comforts, would Renault seriously take the Cup engines to one side and sprinkle magic dust on them? If there was an easy step to a stronger engine, theyd do it to all the cars, not just the cheaper ones...
<flame suit off>
All just my opinion, of course, feel free to disagree if you like... Im also in a rather bad mood, so sorry if its a little blunt!
think anyone with a williams would be hard pressed to match jons figures, but hopefully well see at the rr day, especially as john nobles has a rep for realistic/low figures, if anyone, including some 172s can match his power. good thing is york is not long after the rr so it should be good for comparing rr notes and the power to weight ratios, im sure we can hook up some software to calculate our fastest 1/4 mile time.
well there was the 1.4 rt with nos and extensive engine work project, your well into fiddling with gas flow, and now your xr2 with 150 ponies, id say that qualifies you for the mad scientist dude off fast and furious!
bloody ell, my williams engine in the long run needs to be worked on, wanna get the body immaculate first and steering rack, clutch, mounts, already have gearbox. then i want about 190-200 horses. dreaming atm tho. would be rather cool having a huge induction roar a 800rpm or summat daft if thats possible on the 2.0