Recently I have been hitting 100% duty @ 5500rpm with the 440cc injectors at 3.8bar fuel pressure. This was running 1.95bar peak boost but having to use the Apexi to drop to 1.5bar at 5000rpm in order to keep the fueling in check until redline. No longer...

Stage 1.
Changed the crank sensor yesterday so the car can actually start.

Stage 2.
Install 580cc low impedance injectors with external peak and hold injector driver.

Stage 3.
Map car to full boost, that's 2bar peak holding 1.85bar at 7500rpm with fueling at 11.5 afr until redline.

Result
Well it was fast before, no question, but now...

There have been a few little modifications along the way to get to this point but at the moment she is just singing like a songbird

That is incredible Leighton, you will have to take me out in it at powerstation, i bet its brutal.
I need to have a chat to you about mine too mate, i will send you a pm soon about it.

Ash

Extremely glad your enjoying the car again Leighton. Sounds like some interesting development work you've been doing too.

Sounds like it's going to be lots of fun to drive

Incredible stuff !! What's the approx BHP now ??

good to hear the crank sensor worked for you!

you'll have to take me for a blast at some point now its all setup

Good to hear you've joined the 2Bar club
One can assume you’re not missing?
Is it still a standard ignition system or have you upped the 12V primary voltage?

Soo youve not just been having fun in one coop this weekend end then lol

omg that will surely be un-driveable? unless its dry

are we going to find out what turbo it is???

maybe one off these???? http://www.automk.com/media/2007/12/big_turbo_250-op.jpg

nahhh im pretty sure it was this one


http://img98.imageshack.us/img98/5499/post71187277929iy7.jpg

or possibly

http://www.toyotaownersclub.com/gallery/albums/Misc/huge_turbo.jpg

is it gt3071r by any chance

i think its bigger than that as he was selling a 3071r a while back. maybe a 3076r??

Sweet baby J, the work your putting in Leight is phenomenal. Wanna actually see this thing in action!

Top work Leighton, as always.

Nice Leighton





Same question here

Holy Hell, I bet that shifts!

That's my boy! Get it out at one of the Time attack events and give me some back-up.

No idea on power, will find out more at the end of the month. The turbo is a GT3076R with a ported shroud, makes it very smooth on part throttle boost (along with the green dump valve spring).

Still on the standard ignition system and obviously ecu. I get a slight missfire if I up the boost to 2.1bar so I have found the limit for now. I am also running a big MAF conversion, this gives much better airflow resolution when running high boost so it can be mapped for 2bar and 1.5bar without the fueling going too rich or lean

Mate.. why don't you throw out that maf sensor and go for map sensor..

630ccm injectors and stand alone ecu..

being that you know what you're doing, why not try to get dealership for something like VEMS or VIPEC or etc etc..
price range from 1000 - 2000 pounds, it would beat the hell out of Motec or any other expensive ecu's..

cheers and keep up the good work!

fantastic Leighton,I know who will be mapping my coupe inthe future

Great improvement leighton! Keep it coming!

Well it was making 415bhp @ 5,800rpm a while back. That's with around 2,000rpm to go with soild boost to the redlin

I'vw knocked up an excel sheet to have a stab at an estimate and I'm going with 510bhp

Awesome work Leighton

Scared any more 600cc bikes lately?

Sounds mental Leighton. I shall request another ride at Castle Combe this year (just try not to kill me again)

It is possible to drive the coils up to 16V on the primary circuit with the standard ECU that’s why I asked. You tried copper plugs yet? I've also found a set of coils from another car which might be quite useful if your coils begin to miss in the near future, just keep an eye on my coil thread.

GT3076R still internal WG?

Bet the torque is nice , I wonder how long the box will last. Interested to see a decent dyno graph. I would guess around 450WBHP if you can lay it down

What's a ported shroud Flea?

Bagsie first, just in case it doesn't make it more than one session I'm sure the car would lap all day, it's just the driver is very enthusiastic

Actually I'll try and kill you in the 75

Death by alfa........ Sweeeeeeet

ported shroud, is that like haveing a dump valve on the turbo then our that sort of thing

D'oh!

See below

Not really Nobby.

http://www.turbobygarrett.com/turbobygarrett/tech_center/turbo_tech103.html

http://www.supramania.com/forums/showthread.php?t=45013

Helps to prevent surge. Of particular concern when running big turbo's like this one.

they have little "cuts" (naff way of explaining it) just before the comp wheel.

Basically a ported shroud helps eliminate compressor surge by porting the compressor inlet so that excess air can be diverted back to the inlet. It makes a huge difference on part throttle for my car.

I have mapped a couple of high boosting RSR turbos that boost too quickly in high gears i.e. more air than can be consumed by the engine at a particular rpm. Basically they have crossed the surge line where the turbo wants to give more so you get the air backing up and stalling the turbo. As long as it doesn't last too long then it won't damage the turbo.

Trappy, 510bhp??? Not sure about that but I can confirm it is faster

If you can carry that 379lbs/ft @ 5,800rpm another 1,200rpm, then you'll be at 500bhp @ 7,000rpm. Where is this turbo likely to make peak power? I'd assume higher than Matty's 6,500rpm as it's a bigger unit.

If torque does trail off dramatically over 6,000rpm then you're probably looking at a frankly pathetic 450bhp

Yee-haa where are all the datsun boys when you need them!

Great figures Leighton.

its quick but not going to really worry the datsun boys sorry.

great work though and stunning car

Depends on which Datsun boys Yet to come across one on track that is quicker but of course there will be some one day. Anyway, I'm quite happy keeping Ferraris, Lamborghinis, Corvettes, Porsche Turbos all honest... and that was with a little less oomph

Have you driven a R32 GTR??

I cant see any coupe out handling a R32 GTR TBH, mine will be back from spain soon, maybe we should put it to the test but i have over 600BHP, 4WD, 4 wheel steer and 9.5 inch wide tyres in each corner.....

To take out driver skill maybe we should take a lap in each others cars??

200sx is a different story though, much closer matched

Well I did say it depends on which Datsun. I have never seen a big power Skyline on track, they all appear to be too busy running up the dragstrip which is such a waste of a fantastic handling car.

Anyway, I would love to have a crack in your car, anything that well sorted is an exciting track opportunity.

Me too and i agree it depends on which Datsun boys and how many million bhp they have. Lets remember the coupe is only fwd and i have frightened a good few supposed well known cars with lots more bhp. What i do find interesting in the Time attack series is why a Skyline is not winning any of the classes?

well the car will be sorted soon so i will let you know ASAP

This is

Nah, it generally does what its supposed to do, which is shift some lardy bastard from A-B while wallowing around under its huge girth.

Although occasionally you will see one or two doing some track work:

Ringliner

to be honest it won't keep with 900bhp skylines but for what it is its a really stunning bit of kit and i would love to be taken out in it sometime.
if i am fair i ahve had quite a few skylines and with much more power than the coop and with full coilovers and track setup and although it was quicker than the coop i find the coop so much easier to drive fast and don't worry what it will do to me so if i had a choice or a very high powered skyline again or fleas car i would take fleas car!

A standard coupe is 1320KG and a R32 GTR is 1430KG, hardly lardy.

Standard brakes are shit on the R32 though

top work flea,,,cant wait to see the HP figures though

Peanuthead - there were several Skylines at TOTB this year that were slower round the handling circuit than my Coupe - its not all about power you know - several of them had about double what I'm running

CLASS A - FWD
1 A12 Nigel Ogram Fiat Coupe Turbo 52.907 (5th of 5)

CLASS B - RWD
1 B1 Duncan Cowper DAX Rush Turbo 47.703 (5th of 5)
2 B2 Stu Blackery Westfield Cosworth 48.531 (2nd of 2)
3 B39 Phil English Lotus 211 50.390 (1 of 1)
4 B42 Craig Dolby Lotus Elise Type R 50.531 (1 of 1)
5 B18 Daniel Lark Nissan 200 SX 50.891 (3rd of 3)
6 B39 Phil English Lotus 211 50.969 (5th of 5)
7 B42 Craig Dolby Lotus Elise Type R 51.015 (5th of 5)
8 B7 Jack Frost Holeshot Racing DAX 51.172 (4th of 5)
9 B33 Paul Norris Lotus Sunbeam 51.250 (5th of 5)
10 B34 Nick Hedley Ford Escort MKI Turbo 51.828 (4th of 4)
11 B3 Avi Morade KMS Mini Club Sport 52.125 (3rd of 3)
12 B14 Kevin Duckworth Nissan 200 SX 52.188 (2nd of 2)
13 B14 Kevin Duckworth Nissan 200 SX 52.250 (5th of 5)
14 B36 Richard Elliker Lotus Exige 52.562 (4th of 4)
15 B22 Chris Pearson Lotus Exige Type R 52.610 (3rd of 4)
16 B32 Lee Redgrave Ford Escort MKI Turbo 53.109 (5th of 5)
17 B38 Russ Treasure Lotus Exige 53.891 (5th of 5)
18 B40 Andy Kear Lotus Exigie GT 54.516 (3rd of 5)
19 B6 Nadine Geary Dodge Viper 54.547 (3rd of 5)
20 B18 Daniel Lark Nissan 200 SX 54.734 (3rd of 5)
21 B24 Nathan Freke Toyota MR2 55.109 (3rd of 4)
22 B37 Simon Walker Lotus Exige 55.890 (5th of 5)
23 B30 Stephen Ross Ford Granada Twin 55.969 (1 of 1)
24 B9 Westley Cox Supra 57.218 (3rd of 3)
25 B15 Steve Hawkes Nissan 200 SX 57.438 (2nd of 2)
26 B29 Robbie Calder Mazda RX7 V8 57.672 (2nd of 4)
27 B10 Michel Lane Supra 58.640 (2nd of 2)
28 B11 Jay Evans Supra 58.719 (2nd of 2)
29 B44 Lee Catermole Sierra RS Cosworth 58.750 (1 of 1)
30 B19 Larry Vallot Toyota MR2 69.812 (3rd of 3)

CLASS C - 4WD
1 C61 Gavin Renshaw Mitsubishi EVO 5 RS 47.797 (4th of 4)
2 C66 Olly Clarke RCM Subaru Impreza 48.484 (3rd of 5)
3 C65 John Stevenson Subaru Impreza 48.719 (5th of 5)
4 C60 Jason Hulbert Mitsubishi EVO 4 48.891 (1st of 2)
5 C55 Martyn Green Mitsubishi EVO 5 RS 48.906 (3rd of 3)
6 C59 Phillip Young Mitsubishi EVO 6 GSR 49.000 (1 of 1)
7 C61 Gavin Renshaw Mitsubishi EVO 5 RS 49.250 (5th of 5)
8 C57 Clive Seddon RC Developments EVO 49.391 (4th of 5)
9 C59 Phillip Young Mitsubishi EVO 6 GSR 49.406 (5th of 5)
10 C64 Paul Blamire ZEN Subaru Impreza 49.422 (5th of 5)
11 C62 Paul North Mitsubishi EVO 8 49.453 (1 of 1)
12 C60 Jason Hulbert Mitsubishi EVO 4 49.531 (4th of 5)
13 C56 Paul Martin Mitsubishi EVO 6 GSR 49.641 (4th of 5)
14 C62 Paul North Mitsubishi EVO 8 50.547 (5th of 5)
15 C72 Gulli Halldorsson Team Ice Subaru 50.828 (3rd of 4)
16 C69 Dale Howard Subaru Impreza 50.844 (4th of 4)
17 C53 Simon Norris Norris Designs EVO 50.937 (3rd of 3)
18 C69 Dale Howard Subaru Impreza 51.203 (5th of 5)
19 C58 Ian Smith Mitsubishi EVO 5 GSR 51.281 (4th of 4)
20 C79 Robbie Thornton TDP Skyline R32 GTR 51.312 (4th of 4)
21 C68 Kevin Horsley Scooby Clinic Impreza 51.500 (2nd of 2)
22 C56 Paul Martin Mitsubishi EVO 6 GSR 51.562 (1 of 1)
23 C54 Norman Murray Mitsubishi EVO 6 RSX 51.875 (2nd of 2)
24 C75 John Begley Nissan Skyline R32 52.062 (5th of 5)
25 C71 Rob Harriman Subaru impreza 52.141 (5th of 5)
26 C83 Richard Douglas Subaru Impreza 53.187 (3rd of 5)
27 C77 Neil Wrenn Nissan Skyline R32 54.296 (2nd of 2)
28 C84 Andrew Melling GTi-R 54.766 (4th of 5)
29 C70 Andy Napier AWD Subaru Impreza 55.031 (1st of 2)
30 C81 Barry Howieson Skyline R33 GTR V 55.265 (4th of 4)
31 C45 Renton Nissan Skyline R33 55.797 (2nd of 2)
32 C78 Pete Kettleboro Nissan Skyline R32 57.656 (1 of 1)
33 C80 Anthony Edmundson Nissan Skyline R33 58.063 (2nd of 3)
34 C89 Derek Milton Mitsubishi 3000 GT 58.359 (5th of 5)
35 C86 Chris Murty GTi-R 60.437 (2nd of 2)
36 C76 Karl Farrar Nissan Skyline R32 62.343 (1 of 1)
37 C52 Adrian Smith Fensport Celica 65.078 (1 of 1)

As Gunzi says below - I beat all but two of the Skylines, and I was less than a second behind John Begley's monster

I checked and it was 6 slower and 2 faster on that track

5 of the slower ones ran low 11 sec 1/4's.

It show's what a Coupe is capable of in the right hands (even with some 2nd hand suspension parts)

very true but totb isn't set up for skylines s its so tight and with it being mainly rwd they do better on larger tracks.

the thing is nigel i respect what you do with your coop it is a fine machine and you set great times but where are the other coops on that list? they don't really compete on the same level so either your a amazing driver or your car is far above the other coops?

to be fair the skylines are falling behind on to scoobys and evos and untill the new gtr is cheaper and played with this will remain the case.

i would love to build a coop that would be as quick as the skylines but doubt it will happen.

oh and all the skylines bar two went in setup for drag i know i helped pick them lol they knew we wouldn't do well so setup for what there good for.

there was only one other Coupe this year (Flea) and he was having a lot of problems on the day!

I don't think tight tracks really suit the coupe!

they have more instant grip than a skyline does thats why they are better.
the skyline is rwd and not that well setup for rwd untill the back breaks traction then sends power to the front so it goes very sideways then front pulls you out of it and capterpults you but you need room to do this and the rear can't be setup very well because of this so you need a more flowing track.

if you get the back out on a gtr just as the front kicks in and let off the gas you spin so you have to be brave and keep the foot to the floor.

no such drama in the coop just be gental on the gas so it doesn't break traction.

Guys, if you want to have a discussion about Skylines lets move it to a separate thread in 'other cars' can we please?

yeah fair play. i thought it was going abit off subject and ott. ask flea if he want that deleted as i don't mind my posts going off this thread

all hail king of the 2liter coupes (FLEA)
we're not worthy

GOOD WORK! why do these things always have to turn into a comparison with another car cant we just be happy with out cars we didnt choose them because there FWD we chose them because we like them! otherwise we would all drive pulsa GTIR's cheep and super fast with little mods.

Well I took it out for a few tweaks today, the roads were a bit dryer. As a result I managed to hook up 3rd gear for the first time... I'm grinning writing this, it's getting a little silly now even for me

Good stuff Leighton

Nice Leighton...



the magic 3rd gear

good work Leight - glad you're enjoying the car again. Let's have some graphs please.

I wil see them in the flesh unless flea gets it rr'd before next saturday at powerstation. will make my car seem slow

maybe he might let me drive it as after all he has driven mine for a couple hundred miles i only want 5 milesin his

flea how drivable is it if you aren't getting grip in 3rd lol.

Hopefully get some figures in a weeks time Si, all I know is that it's made some big gains on the road.

Peanut, my front tyres have seen better days which isn't helping at the minute. However, in the dry it will take all the power in 2nd and 3rd gear, but if the roads are greasy or wet then it it's a problem at full boost. The solution is part throttle or lower the boost

Oh and Luke

ok thats sounds good. :-) what tyres do you run and maybe looking at even better 1/4 mile times this year?
i think wet or greasy roads will catch any car out apart from trick rally slags so if you can hook up in 2nd i bet its a real machine.

out of intrest how much would a remap on a stage one coop be? and what sort of gains would i get over my gtech 1?

Follow the link in his sig

Have a look here for stage 1 prices peanut

Hmmmmmm.

more or less every 'performance' car owner i have spoke to has claimed a magic second or third gear, from escort rs turbo's to cosworths, Renault 19 16v's and 5 turbo's to tubby mr2's, and newer stuff like evo's and focus ST's.

Somehow i believe Flea's second and third gear experiences may be slightly more magical than most !

Flea, would you hazzard a guess to what your top end would be now? not neccessarily provable at a testing ground, but potentially if you had more or less unlimited space (like on a private motorway for instance )

we need a couple of V-Max entries - I reckon my car is good for around 175 - Flea's should be 180 - 185

would the standard gearing allow that?

It's not just about gearing it's also about rpms. The standard limiter is 6800rpm, I have mine set at 7850rpm, the extra 1000rpms goes a long way in 5th gear. Theoretically I could see 195mph given enough power on a long enough straight. Nigel also has the option of the 6th gear.

The standard 5 speed gearing would allow for 171mph @ 6,800rpm on standard rolling radius wheels.

It basically turns at 25.2mph/1,000rpm in 5th gear. I think Leighton runs at 7,800rpm and so should be capable of 196mph on the standard rims.

yeah the gearing is well up to it mate

thats good to know then like i will ever have the power to achive it.
do you think you would have enough power to push that speed though?

In in practice doubt it as the coefficient drag will be too great. Flea will need a Areo package next

you say that i have seen a r33 gtst with 629bhp hit 212mph on gps and to be fair the coop has less drag than a skyline so if he can get the power above 500bhp i think he could do it

Is anyone else thinking Gearbox Oil Cooler?

with a six speed box and an increased rev limiter, the Coupe will do 200 (with the requisite power of course)

Mine is showing about 3,600rpm at 100mph in 6th, so should be hitting an indicated 200mph at an indicated 7,200rpm

However, the speedo is not deadly accurate and neither is the rev counter (it actually reads slightly high)

With 17" wheels, the speedo is only about 5mph out at 100 (although its not linear - its about 3mph out at 30, 4mph by 60 and 5mph out by 100). I'm guessing completely, but I reckon its no worse than 10mph out by 200mph, especially with new tyres.

I have a slightly raised rev limit (about 7,300 IIRC - Flea can you confirm?) and I reckon its geared for about 190-195 at the limiter.

It would be nice if it had the power to get anywhere near this, but I'm fairly confident it would run out of puff by about 175

Its my belief that the underside of the car is too cluttered to give it true supercar speeds - most proper supercars have very flat undersides - the Coupe is just a normal car in this respect - floorpan mouldings, brake pipes, heatshields, gear linkages, mountings - all sorts of protuberances that will destroy airflow (and probably create lift as well)

Top speed is about overcoming air resistance which is proportional to the square of your speed so doubling your speed quadruples your drag.

I'm not saying it’s not possible just there are many factors to consider: frontal area, coefficient drag, rolling resistance, transmission losses, air density, weight, gear ration, wheel size, power etc...

If he can overcome these by sheer power then we have a new record

*Cough* Brize Norton.....

Well not sure how long the V-Max runs are but I would only try it once. As Kenno says, keep doing long top speed runs and the gearbox might explode!

Nigel, yes your limiter is just about 7300rpm.

Sadly i think that option may now be out the window

Though i may be able to arrange something for an event at a different place

Milbrook? - would be nice to try the banked circle

TBH, 2 miles is probably not enough - even Bruntingthorpe can only offer this much AND this includes the braking area. The saving grace is that you can enter the straight at about 80mph, so you've already made up an eighth of a mile or so

I'm hitting 160 at a mile from a standing start - I expect Flea will be at 170

Whilst the car was still accelerating at 160, it was only creeping up gently and you have to realise that at 160, the next mile will disappear in just 22 seconds

I'd still love to give it a go though - getting to 160 is entertaining, but I imagine keeping it planted after this is quite scary

Even with an unlimited straight I wouldn’t attempt more than 150MPH without some way of measuring tyre temp/pressure on the fly.

And tyres that are rated to them speeds.....

so what speed would a coupe with about 260 270 bhp make?
i think the standard is 156 so would the extra 40 50 bhp take it past 160?

I did about 155 down the runway at brize (work here) earlier this year indicated on sat nav... its safe to say i was bricking it! and trying to pay more attention to the road than the sat nav. car is running around 270bhp at a guess.

The top lane of the "circle" is hands-off at 130mph, but after that you start to feel the cornering forces build up. Go much faster and its easier to start feeling nauseous (you are leaned over at about 20 degrees) and even easier to lose concentration and hit the wall which is right next to you! Not for the faint hearted

On the upside, it is a little known fact that Millbrook is available for hire by the general public, and the deal I was on allowed me use of all track facilities for £50/hour with minimum charge of £100. Go and play up and down the straight, the kappa was clearing 150mph just oer half way along - or do the same in monsoon conditions on slicks, wheelspin all the way down. Whizz round the bowl until you throw up, thrash round the Alpine handling course or the smaller track that 5th Gear use. And what fun we had going round in circles flat in second on the steering pan to test the Accusump really did work - and then the realisation that we were getting dizzy, and the only options were to go faster (and spin out), lift off (and spin out), oh, and to spin out!

Probably find a group buy could bring prices down, although I did have to go down to Millbrook separately beforehand to undergo an initiation in safety, how the walkie-talkies worked etc in order to get my track licence

Great place to play, but if you're going for top speed runs, stick to Bruntingthorpe or find a quiet straight junction-less piece of motorway!

Agreed - I really would not feel comfortable going over 160 in a coupe, they are really not designed for those kind of speeds.

Sounds great - would love to have a play there!

TBH, when I managed an official 166mph this Summer for a standing 7/8ths mile the car felt remarkably stable. It didn't give me any cause for concern, that said I wouldn't want to do it very often for obvious reasons!

I found 160 to be noisy (car was VERY stripped out and on track tyres) but very stable - no wandering around, no feeling of the steering going light - just like doing 100 but with the scenery on fast-forward

Its amazing how different it feels though - I think with the Coupe we can get a bit blasé about 100 - 140mph, as its so damned easy. However, despite there being only another 20mph difference, 160 suddenly seems very fast indeed.

You have to wonder what it feels like to be in the Ten of the Best winning car - last year, in a mile from a standing start, I got to a fraction under 160. Flea was about 167 IIRC, but the top cars were over 200mph - in a mile, from standing start - incredible

Reading the numbers for Kieth Cowie's R32 GTR from the redline magazine Flea was in, that car does 197mph at the half mile. 0-200mph in 823 metres...

Ask Peanuthead what that feels like

yeah its stupid mental.
i went in his car a couple of years a go and it is quicker now but its still mental.
the fastest i have beenn as a pasenger was 189 which was crazy and the fastest i have driven was 172 which was crap yourself time it was scary as it was in a old 3 door cossie with 562bhp and not what i would call stable

Keith's car will be even more interesting this year.

I can tell you from personal experience 175mph is very unpleasant

oh yes it will be.