Lloyd was that at the wheels?

 

yes mate done on thor racings dyno pack,but in rwd the front wheels do not turn,so it cant measure losses.the test was a set up of the gearbox control,looking at torque splits at different pressures.

 

ahhh so it was on a dyno pack so at the hubs - even better for that test i guess as no tyres to add factors. Wouldnt want to be giving 30hp away so RWD it is for topend.

So with no pressure - eg rwd is a skyline conversion in drag terms somewhere between a RWD cossie and a 4wd one as it has to still turn the gubbings in the front diff with the front wheels even if the centre prop is not driving it?

 

yes mate that is what the tests have proven so far. santa pod next weekend will put the figures into mph at the 1/4.ie full 50/50 runs .full rwd runs, then full 50/50 fading to rwd when ive got traction.

 

trial and error trying to find the fastest set up.

 

lloyd, cant wait for your car to run a ten mate

 

 

well iam not 100% sure on the weight,but when i was taking some rubbish to the local tip,lol,i asked the chap on the weigh bridge and he said just over a ton,

 

Would be good to see what she does wiegh.


Mine comes in at 1220kg, everything removed (tools etc), no driver and full tank of fuel (45ltrs)

But thats
a modified xr2i shell,std wings,bonnet, boot, and PSG kit and bumpers
all glass, and full interior,
Full cossie engine,transmission, brakes, beam etc etc.
Steel fuel tank,
17" wheels, 330 6 pot brakes.

 

On the top speed subject (as this thread has turned into one)

Has anyone read about Mick with the Jun super lemon on the GTR register?

He's going for 250mph

.

 

jameswrx Link?

 

http://www.gtr.co.uk/forum/upload/86...ghlight=250mph

 

Thankyou.

 

tottally off topic but i saw your 911 blasting down the M25 yesterday evening Lee,it looked and sounded

 

YUM..just break and buy a Porsche..get rid of that chav image

 

Thats correct, Daves 178.5 with a mere 440 equates to Martin having 590 when he ran 194.7 & I expect thats close to his actual figure.
The Saff with the spoiler on would need 30/40 more horses to pull those speeds. Ive no facts on the Escort with the wing on but I suspect its inferior to the Saff.

 

fooking quality .yes he must of left the house today

 

Haven't read it all.

Sell it and buy an Evo, or go with a liner setup if that keeps AWD.

I'm guessing your car's big power, so 2wd will be pointless on the road. I've been out tonight in my evo and it struggled to grip in 3rd most of the time. I can't imagine what that would be like to the rear wheels. You'd only grip in 5th, you might as well have 4wd and 400bhp, surely this would be quicker on the road.

 

winning TA or TOTB aint in the Guiness books either but tell those guys it aint worth a light. Worlds fastest Cossie is just that Charlie im proud of it & wont let it go easily, to some holding the lap record at Donno would be an achievment they strive for , its horses for courses mate & not deserving of your slur, unless you have been to Brunters & tried you cant really comment on its worth.

 

Yum,
It's difficult for anyone to advise what to do, as only you know the reasons you built the car to the spec you did. However, I personally built mine DOWN to a power level, in a hope that this would give me more reliability from the transmission (yet despite this, I have still had issues with the front pinion lunching itself, albeit after a lot of miles ). However, despite my considerably lower power and torque figures, I won't EVER launch the car in the same way that you have / do . The reason being, although I would LOVE to know what it is capable of acceleration wise, I'm not prepared to throw several thousand at the transmission to find out . And as my car was built to go round track relatively fast, this is not something that interests me in the same way it does you (my car runs 3.9 gearing, so won't even do a high top speed).

Looking from the outside in, it would appear that what you have created is a rod for your own back, as you WANT a car that is regularly measured on acceleration / top speed runs and unfortunately this set-up requires the type of gearbox you say you want to avoid.

You could always accept the fact that with your current transmission, that launching the car is a no-no and then just enjoy doing top speed runs / track days (however that would require a quieter exhaust as well )? It's only launching the car that is causing you the major problems, so ipso-facto - DON'T launch .

Although 2wd will give you some reliability, it WILL make the car slower below 100mph (traction issues) and definitely slower on track.

 

Good summary.

It seems like Dave has the following requirements:
Must be a quiet and civilised gearbox
Must be able to take massive launches
Must be 4wd

Its only a swap for a standard skyline transmission that seems to offer that combination IMHO, and even then you are pushing your luck launching it very often probably!

 

Aint got a clue about all the maths (NOT that I care either , it did what it did whether it should or shouldnt lol )

But managed to find a couple slips and charts for you to pull apart mathematicaly

Do these "maths" workings allow for Nitrous and the way it delivers its power and the fitment of a Nitrous controller that alters the delivery of its power ?





The figure in the printout below is 484.6 lbft ok maybe not 500 but also not far off (100 shot not 150 )



For WHATEVER reason my car used to make its times off the line NOT top end , often used to have cars catching me near the top, didnt do its times with all out power, I always used to run slower MPH speeds than others with the same et's , THAT is what I used to always put down to the torque of the car pulling off the line, hence why I mentioned its torque and said my gearbox and std diffs did OK

Steve

 

thanks, was either going or coming back from Saracens

where was it, what were you in

Was I going fast

 

i was turning off at junction 28 and in my Esc Cos when i heard this "BLLLLAAAAAAAAAAAAAAAHHHHHHH" NOISE and a silver 911 TURBO went flying past....i just caught a glimpse of the dream number plate so i knew it was you!!....it did sound the nuts though!

 

It really is batshit fast for a roadcar and because I hardly ever drive... and so when I do I get a bit excited

 

lmao

you just need to add "your honour" to the end of your defence Lee

 

so would i!

 

rapid 1, if you ran 100 shot of nos how did you control the nos pressure for 11 seconds?the most i have managed is a 40 shot,controlled by a bottle warmer.i found that when bottle pressure fell the mixture went rich and i lost power.that might explain your low speed at the end of the strip.

 

It may lol

But When I first started using "Nos" I also used the bottle heating technique, too unreliable.

After time I switched to adding Nitrogen to the bottle, this sits at the top of the bottle above the Nitrous at a higher pressure thus creating a higher pressure pushing the nitrous out.

Obviously if the day heats up so the pressure also would then go up, so I also had installed a bleed valve on the bottle sold by Wizard of Noz, which you can set to release pressure from the bottle at what pressure you want, so could inject the Nitrogen early in the day to set the bottle at 1000psi and as the day heated up it would gently bleed off the excessive Nitrogen and maintain 1000 psi, obviously as the day cooled again you then started to loose pressure again, but nowhere near as unreliable as the heater method, and if imperetive for pure max (didnt really see that great a drop off over the day to evening etc) could give another shot of Nitrogen into the bottle

I THINK im correct in saying Rod has/had/tried a similar setup, but his was plumbed in to KEEP the pressure exact at all times ?

Steve

 

Yeah the system we came up with for Rods car has a bottle of nitrogen in the boot too and bleeds that into the top of the ntirous bottle as the pressure drops.

 

Thought so

Bit better than my concoction of "Y" pieces and lugging a bottle of Nitrogen about lol

BUT mine did what I wanted it to

 

I can adjust the pressure that is required to be maintained in my case 1000psi. At the start the Nitrous is purged & then a reset button is pushed that brings bottle pressure up to 1000psi where it stays all the run, the effect is devastating, you can hear it pumping the Nitrous up to pressure .
The car has never been timed Topspeed with this active but in tests its on a different planet to when the 206 was recorded.

 

steve, did you monitor afr in the car?

 

Not "properly" lol

As Lee said my car was VERY budget orientated lol

All I had was one of these



With an Escos Lamda sensor, No Widebands im affraid

BUT enough to show gross swings in AFR

Steve

 

thanks steve,very interesting .hopefully i will not need more than a 40 shot of nos.

 

DOH

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