Going to FC Performance ... Results.. 401bhp!

Engine built and ran in, so as long as transport company don't let me down it will be in Bristol Mon 15th.

C'mon Leighton, work your magic

I will be clucking to see what power he can get out of my new build

Really hope after all the work you put in you get what you want, fingers crossed it all goes well mate.

I want a ride in it once you get it back up the road

Up to you now leighton, good luck

Looks good, what you aiming for 400+?

We all know Leighton will and always does his best, good luck.

Thanks Ronnie!

Yeah aiming for 400+ ... will be rather gutting if it fails to reach it tbh.

Pistons, rods, turbo etc aint cheap and quick to do

What's the complete spec mate?

Also good luck!!

Yeah I know. Well fingers crossed, look forward to seeing the result!

Thanks, i'll post it up in 5 mins Marco

I've just had mine rebuilt as well, wonder if there the same spec, lol, as I'll be aming for same figures!!

Good luck and hope you get the figures you want or more

I thin I remember seeing your spec list Razor, GT2871r right?

What turbo you going for Zonta?

GT2871r i have now,,, as my rsr had to much play to put back on the car

High Flow K&N Air filter
*Big MAF conversion
*Uprated EBV
GT2871r Turbo
Massive Front mount Intercooler
Gas Flowed Throttle Body with knife edged butterfly
Ported Plenum chamber
Ported and Gas Flowed Inlet Manifold (Will add pic)
Gas flowed cylinder head, picture above.
C&B High lift camshafts
Balance shaft removed
H-beam conrods
Accralite 83mm Forged Pistons
Larger Mocal Oil Cooler
515cc Bosch Grey injectors
4 bar FPR
Walbro 305l/h Fuel Pump
Tubular Banana Exhaust manifold
Custom Downpipe
Custom Decat
Blueflame cat back.

*These will be fitted in Bristol

I have prob forgot some parts but thats the main?!?

@ Zonta, thats interesting as I have a GT28RSR at the minute and will be going bigger soon, good luck

@Razor, sounds promising for 400bhp.

Fingers crossed anyway mate!

Don't forget to add pic's please.......

i added a couple of pic's at the top mate

With all the work you put in and forged components, why did you not go for a bigger turbo?

Because i dont want lag lag lag boost.

GT2871r is apparently good enough for 450bhp, i thought it was a big-ish turbo to be honest.

Also being a turbo known to spool up quite quickly.

What housing on your turbo are you running out of interest?

Hmm, no SIP...

You should make the magic 400bhp club!
The manifold looks nice... Fingers crossed that's the key to more power for you

I like the look of the belt guard. Any other benefits over the OE unit or just fancy something different ?

.64 housing apparently.


Yeah fancied something different with the cam cover but ofcourse its stronger than the plastic, if one of those power steering belts decides to break up then it aint coming through to cutt the timing belt

Good luck,yup good choice of turbo for everyday use,fast spool up and beefy too....rest of spec sounds good too

If you dont mind me asking, who is taking the car down ? my car has been due to go down to Barbz and then leighton for ages, but I`ve been let down 3 times transport wise...
Best colour of coupe by the way

Ahh i forgot ....Just so happens mines is Sprint Blue too

Thanks lad

5 star vehicle deliveries... Owner is a good friend ;-)

Ahh the good old sprint blue, a fine colour if i may say so myself lol

better when its got a bit of sparckle in it

What's the logic for the ebv over an ebc like avcr etc?

Good luck looks like a great spec.

I love the look of that tubular, who made it? I want I want

Marco you would have to show off ;-)


The tubular was made by a Chap from Russia, i wont name names at this time... Multiple PM's lol

Your engine, my body work... Match made in heaven!!

Marco, I always knew you were but sheesh dude, calm down.

PMSL

Well my bodywork will be getting a makeover after Bristol ;-)
... Just Sprint Blue again though :-)

Come on man, go wild and try some thing different!!

Ok, it's a sexy sprinty plus with a massive engine which will give great results....

But try some thing new!!

Pearl blue?

If Razor gets it in Pearly blue, yours won't be so special no more Marco

Looking good Razor

As tempting as it is to go a bit different with the sprint blue Kelv.. i'm going to stay original

Can't wait to get it back now ha!

it will always be special kelv... Always!!

In a needs way

Hopefully dyno'd tomorrow :-)

i'll guess first then.....
i'm expecting very similar results to nigels so.... 448bhp & 390 ft lb.... @ 1.7 bar

have you specified max boost to leighton??

nick

It is not physically possible for the GT2871R with .64 housing to make 450bhp I thought.

I would love to see that kinda power... but its too many customs mods to guess in my eyes...

I thought it was a 0.64 but leighton thinks its the 0.86 by how it drives and boosts, i really should have double checked when it was off.

What the hell, good luck mate!

My guess, 441bhp (I hope it's alot more!)

isn't that the turbo Nigel is running?? And he made 457 if i remember right??

On a dastek dyno yes.

Put him on a 'heart breaker' and I'm sure you'll see a different story.

well as its getting dyno'd on a dastek.... The same one as most other peoples on here, i'll base my guess round that.
Heart breaker is obviously a REAL dyno for REAL men!

nick

Tbh, what does it matter what dyne it's on??

Flea use's 1 dyno and every car he maps and set's up runs on that dyno, gives every one a reference poit and so on.

We can discuss the "Dyno saga" till we die... Why don't we just accept the figures as they are!?

I've made the mistake of putting my car on a Dyno Dynamics RR once, and I nearly cried. lol

Was that from your under arm smell

Mate, I beg you to take your car to a Dyno Dynamics RR once you've had it mapped by Flea.

I will bring a box of tissues for all those crocodile tears!!!!

I've only ever had it on Dastek rollers... would be interesting to see the difference but Dastek is by far the best RR to use from what i've heard. Most accurate etc.

hahaha i dont really care any more mate!!
im just interested in getting it running right lol

I'm a realist - I accept that my car will be down on power if I ran it on a different dyno, but the fact that Leighton maps on the same dyno all the time means that the results are broadly comparable

A GT2871 0.64 is good for around 400bhp, maybe a bit more with lots of extra supporting mods (such as high comp pistons, high-lift cams and flowed head, all of which I have)

One day, I'll put it on another dyno so that we can see what difference it makes, but I'm happy enough with what it does on the road, rather than the numbers on a bit of paper

Don't do it Nigel! Lol

well there was only 20ish bhp diference between dyno's when barbz visited fleas and heartbreaker..... Think it was same boost both times aswell, 1.3 bar!

TBH, you can get a 20bhp difference on the SAME dyno if its a few days apart, especially when you're up in the 400s to start with (it's only 5% at these levels - easy to lose with a drop in tyre pressure, an increase in ambient temp, a drop in octane on the fuel if its been in the tank for a couple of weeks - that sort of thing)

Agree with Nigel, its all about what it does on the black stuff. When I did the Auto Italia feature with 2 other cars which also had "around 400bhp" mine went 170 down the runway, where the next fastest got to 155 (a big difference). Mine was 429bhp on Fleas rollers.

^^ Exactly - I've embarrassed cars with significantly higher bhp figures or greater sporting credentials and that's the appeal for me (and the look on the face of the Conti/DBS/M6/SL65AMG/F360 owner as I do it )

Results please??!!! I've only checked the forum about 50 times today...... I'm about to pee myself in atticipation!
it will hopefully be me in this situation in a week or so, after nearly another 2 years off the road!!

nick

come on, you got us waiting now..

not cool... Not cool..

Haha final results should be tomorrow... possible faulty coil or plug holding us up :-)

sounds good!
fingers crossed!!

Even on the same dyno on the same day but with a different operator can loose or gain you power. On the jap car forums, everyone quotes actual wheel horse power which is a better comparison between dynos / circumstances.

Well misfire cured, I'll let Roger fill you in with that one

The final results are 401bhp & 351lbs/ft (1.7bar dropping to 1.2bar)



It is an interesting spec, not your usual mix of goodies. The turbo is an unknown quantity, but it is from a Nissan Skyline (GTR I think), although not sure if it had been modified prior to Roger purchasing. The only real restriction on the setup is the standard downpipe (yes standard!), which was converted to a 5-stud flange. It would likely spool up a bit quicker and perhaps a little more top end too with a larger downpipe, although the boost would still drop off naturally due to turbo efficiency.

It's very fast, strangely feels quicker than 400bhp. The only other problem is that the CG Motorsport paddle clutch is not coping very well at all!

I am sure you will love it Roger

A misfire well cured then haha!!

Thanks again Leighton.
A larger downpipe will be on my shopping list

Roll on next week for getting it back

if you change downpipe, wont a new remap be needed to optimise as more top end fueling may be possible ?

id be keen to see before and after graphs, my experience in turboing a rover v8 was that the exhaust restrictions were secondary to the poor flow of the heads and increasing boost didnt liberate any more power but shifted the torque lower down the rev range, which for a road car was ideal.

Good result there, especially with the oe DP!

Thanks mate ! Turbo has a unique 5 stud flange so more cutt and welding needed to the 3' downpipe whenever i get it.

Yes it will need the map tweaking if the downpipe is changed, but I would add that it certainly doesn't require it. As it stands, it is setup perfectly so while there may be further gains to be had, Roger may feel it is plenty quick enough once he has driven it!

In terms of flow, the 20vt head is remarkably good despite the small valve size, and will achieve 500bhp with no work at all. However, exhaust size is more significant in general, so for maximum performance you should always increase diameter appropriate to the demands of the engine.

I was hoping for 400bhp and i got 400bhp

I will prob end up changing the downpipe over time but my main issue is the new CG Motorsport Paddle clutch, rather annoyed about that but s**t happens. I am very happy with the results, torque is quite similar to that of the cars 430bhp+

Do you see a shift in terms of high end gain at the expense of (relative) bottom end loss?

Ive generally seen low torque loss when exhausts are fitted to facilitate higher rpm gains - unless of course the std pipe is causing a restriction throughout the rev range.

Cracking result guys!!

Flea, you sick of spontaneous blue coupes yet??


Shame it's not there on Thursday as it would be nice to see it!!

mine may be there thurs with a bit of luck, desperately needs some flea diagnostic work first before mapping.....

nice results by the way buddy!
i went from 267 to 306 bhp just by changing standard exhaust (and downpipe) to straight through 2.5" system.... Reckon you'd see nigels figures with full 3" system and map tweak??
thats gotta be highest power with standard dowpipe?? Luke had 357 iirc with standard dp?? Bigger turbo though so shows how good head work is prob the main component for making more POWA!

Great result!!

Wasn't the clutch absolutely new?

1.7 bar is massive. I also saw that on the rollers but don't use it on the road due to torque steer.

Nice results, I never had a guess but said you should just about see 400bhp with the setup you have. Nice.

Nice one Roger


By the way is your hair still pinkish in bits

Young guys these days and their hair, you diva

luke had a 3" DP and 2.5" system mate

whats the torque steer like when it transitions to full boost with throttle wide open?

You can certainly feel the torque steer mate but its nothing white knuckles would be required for.

Got my first blast in it tonight... awesome!! and agree with Leighton, it weirdly feels quicker than 401bhp

thats a good result on a standard down pipe which will be strangling it to death and maybe some bigger valves.

didnt you get the link for the 5 bolt turbo flange i sent you?

No mate i never saw the link, was no problem to make one up anyway :-)

could you quantify that? - I am looking to tune a 20VT and only limiting factor south of 350bhp would appear to be torquesteer - with normal grip and attention, how much does car move to the side during strong transition (with casual compensation when detected) - 6 inches, 1 ft....or worse?! - with the tired car i tested, even with keen attention and prompt correction, it still moved over a foot to the right coming onto boost at full throttle - dangerously uncontrollable - factor in that aking you over a backroad crown and you are then fighting to get back to your side of the road (est 290 bhp on tatty 98 car) - second and third gear were frightening, whilst fourth was more than mildly alarming cos of combination of speed and being in middle of road at best...!

I dont expect car to remain without deviation through max transition, hands off, even with 260 bhp, however it is vital that whatever power I plump for is no more than a gentle rock of the wheel and with a sensible grip, no appreciable sideward movement - is this really possible with 300+bhp folks? - Tight second gear corners, how prone to spinning nearside wheel rather than getting power down - my test car was ok and put power down well - but 300+bhp?

Now get yourself onto 'Countdown'!

sounds like the 98 coupe was well ill. your to the fact the front wish bones were probably shot and so was the rest of the running gear. ive drove a few well sorted coupes and they dont torque steer that badly

either that or i just have more strength and dont notice the pull that much

My last coupe had a full front suspension refresh (new polyflex'd wishbones, drop links, top mounts, and bilstein/eibachs) and it didn't torque steer.

My new one hasn't had all that and it does - getting them done this month and fully expect it to feel more controlled at the front.

As others have said it's all in the front suspension components. If they are worn you will get FAR worse torque steer. As I've said before mines had a full front suspension refresh and I get no torque steer. Granted I'm not running 350bhp. However I did get to drive OO7's car which is ~310bhp on a GT series turbo and going onto the motorway through 2nd and 3rd there was no torque steer on WOT.

Maybe see if you can meet up with someone else with a high powered Coupe and ask for a passenger ride.

I got rid of most torque steer with the lower brace.

all very encouraging .. I cant imagine what 350bhp feels like in a Coop ...310 in an STI PPP was pretty alarming, and i am assuming Coop to be far lighter and far less parasitic mechanical losses ...err, if it weighs 10% less and looses 10% less drivetrain friction and is 13% more powerful..err that would suggest it should feel 30% quicker with similar gearing and when the tyre smoke settles down...hmmm, call me sceptical,I am dubious...that would be truly alarming, if not darn right frightening!! - It would also imply easy single figure 0-100 figs... - any 350 Coops out there achieving this?

I'd wager the Subaru would be much easier to get a decent launch, and Coupes aren't that light, around 1350kgs kerb weight.

Eldinho's 429bhp Coupe can theoretically achieve a sub 10 sec 0-100, with a 12.4 1/4 mile at the 'pod.

H2ypr's old Coupe had 334bhp and ran mid 13's 1/4 mile, ~10s 0-100.

IMO it's all about the 60-100 figure anyways!

Using bhp/wheels figures for graphs I have on Track'n'Road's dyno, my calculator gives the following 60-100mph times;
214bhp (standard) 8.95s
292bhp (GTiR) 6.45s
315bhp (GT28RS) 5.64s

My estimated wheel power graphs return;
220bhp (estimated) 8.89s
360bhp (estimated) 4.87s

Autocar reported a 60-100mph time of 8.5s for a standard car and Top Gear 8.6s for reference.

any known modded 20vts going to Gaydon at the weekend?

Anyone know what the show is? - a gathering outside a museum or a proper show? - Trade / tuner stands?

There will be a few there, myself included. It's an outside show next to the Gaydon museum. Couple of trade stands, no real tuning stands

Which insurers are best for 300+bhp Coops - Mature driver

Mine is with Neil Willies and it's 325 bhp with all mods declared, and I'm old enough to most forum members' Dad (but luckily I'm not )

is that a classic policy with no bonus requirement? - what sort of prem / mileage limit?

Also, 325bhp is a comfortable figure - what mods are you using?

It's limited mileage (5,000 IIRC) on their "modern classic" Sports Car Insurance policy but with max no claims (at least I think they take that into account?).

Mods are basically GT28r turbo, FMIC+SIP, 3" downpipe + race cat, water/methanol injection above 1 bar, AVC-R boost controller at 1.4 bar (the full list is longer )

how much does that come to £ ?

YHPM