Power Graph Thread

[Japster]

Originally Posted by Pukkasilvia

It would make sence for the heading to be wrong but give them a call anyway.. By all means take me out in it.Ive been in shauns at jae last year and it was rather hectic so you should go out in that too. The thing sounded like a motorbike on boost .... Either that or a few of us can get out on the track at Rockingham at the same time and have a friendly boot round with each other

Yep - Will def. have to go out in Shaun's mowtah! - Real shame I don't have that external wastegate - May have to ask Simon if he can fit another...

I've rang Thor up, but Pete and Lyndon are out road-testing - Will ring in an hour or so...

As for Rockingham, the woman rang me back asking for engine size - Halfway through the conversation it clicked that she was gonna stick me on a track session with 1600-1800cc cars - I thought it wise to mention the BHP...

After double-checking that she'd heard right, she said that she'd check with the organiser about re-classifying me... (Didn't want 15 minutes of trying to overtake what were probably going to be MUCH slower cars
(XR3i's, RS Turbo's etc... )

[Japster]

Originally Posted by Japster

Heh heh... I certainly bow down to your pristine paintwork! - Mine's right f*cked...

Cheers Rob! - Yep 442 at the fly equates to more at the wheels - most places factor in an 18% transmission loss on older r/wheel cars like the S12...

Haven't got a calculator, but 442.5 *1.18 should give the answer?...

(Just checked - 521.56) - close enough....

Yep - My f*ckup on the way round - That should have been 442.5 at the wheels equates to 521.56 at the fly - Still yet to confirm that Thor's heading was wrong!

[s13eater]

but it would have been funny slaughtering them underpowerd moters , surely you can have an external wastegate fitted, mines only a t 3/4oe, but got an external wastegate, i wun't be without one now, the noise exites me ,den, that silvia when you took me out was a beast

[Japster]

Originally Posted by s13eater

but it would have been funny slaughtering them underpowerd moters , surely you can have an external wastegate fitted, mines only a t 3/4oe, but got an external wastegate, i wun't be without one now, the noise exites me ,den, that silvia when you took me out was a beast

Heh heh - I loved the noise too - Way glad you still remember the trip mate! - we'll do it again matey - I didn't order those bloody calipers though - Will do so tomorrow if I can - D'oh! (Got my replacement studs from Nissan though! )

Good news! - I checked with Thor, and Lyndon said that the heading IS incorrect for my graphs, and that the figure for the flywheel should be calculated by using a multiplier, which they don't use for most setups.

Thor therefore normally leave it set to 1.0 (i.e. the same amount - What it *should* be for my Silvia is 1.18 (i.e. 18% transmission loss (it's the figure that reads 1.0 on the graph, and is called TCF - It's to do with the transmission loss calculation, to put the extra horses BACK into the equation, as Thor measure power from the wheels.)

Hopefully that clears it up! - So, as I say, I deffo had at LEAST 520BHP when the graph was printed...

( Incidentally, Lyndon mentioned that he's ordered himself a Hyper-bearing turbo for his Supra, which he says starts making boost from as little as 1,000rpm! gimmee sum o' dat! )

[s13eater]

andy at AMT engines did a head for paul whiffins supra that produces over 800lbs/ft and near on 1000bhp and thats with a little tubby.

[Japster]

Originally Posted by s13eater

andy at AMT engines did a head for paul whiffins supra that produces over 800lbs/ft and near on 1000bhp and thats with a little tubby.

Heh heh.... Little tubby, whacking great engine! (CC-wise... ) - I think we can be proud of what our little 1800's are running in comparison... (If we had an extra 1200cc (or possibly even more - i.e. 1500-1600cc extra, depending on that Supra's possibly increased capacity?) - Then I daresay it'd give us the ability to push a similar amount of horses - i.e. Just saying that per CC, I think that I'm running near as much BHP...

[adzs12]

Soon as my car is mapped fully and everythings settled il be doing a power run so il put my graph up asap

[wacomuk]

179.0 bhp 1st run. with some fannying about 2nd run 199.8bhp

175.8 lb 1st run 205.1 2nd run


this was my old silvia (RIP)

CAR MODS:
standard t2 running 1bar
1 bar actuator
Volvo 740 IC and water rad front mounted
k&n air filter
custom made SS exhaust (1box)
walbro fuel pump
timing set to 15DBTC (on dyno)
plug gaps made smaller, got an extra 5bhp
i had a timing kick back system @12 psi it took the timing to 10DBTC the guy at the dyno told me to get rid of it, so I did the next day
after the run i set my timing to 17DBTC it gave more low down power, i never got any detonation

[s13eater]

where you had that, folded up in ya back pocket,lol.

[rpettafor]

i ran mine on saturday, i got 185.9bhp at the flywheel and 185 ft/lb torque, but is running lean at the top, so i am thinking that i need to get some bigger injectors and/or a better fuel pump - ill get the graphs up later, but for now heres an action shot -