JBS RR with Cupranet yesterday

[RobT]

Hi

We had a cupranet RR at JBS in Chesterfield yesterday - well run and good set up.

Anyhow, some interesting figs from the big turbo boys Bill, Wilco etc (who I am sure will put their own figs up) but my old-fashioned valver wasnot too shabby - and sounded the dogs ! [:Y:]

215.2hp (193 ATW) at 7250
170ftlb from 5000-6250 (>150ftlb 4000-7500)

This has been built as a mid range engine and performs as such (but has a 8.5K redline as a bonus). Bigger TB's will yield more power - dyno figs on a similar spec engine show 17hp gains on going to 48's with no other mods. Guess whats next....(along with a stronger gearbox)

Cheers

Rob

ps - as an aside - this engine gave 238hp on an engine dyno so its seems there is a disconnect between the two somewhere - of course once in a car it has a different exhaust etc but seems quite a bit different.

All RR graphs will be posted up on cupranet very soon - will post link as sson as comes available
Edited by: RobT

[prof]

well done mate, be interesting to see the graphs.

was it dropping off at 7250?

[RobT]

well done mate, be interesting to see the graphs.

was it dropping off at 7250?

Dropped approx. 5hp to 8K [:D] - RR stopped aquiring at 8K (dunno why) even though car clearly went to 8.5K limiter

Goes like stink - driver now the weak link !

Cheers

Rob
Edited by: RobT

[vw_singh]

Loverly Juberly! [=D>]

[AlexB]

wow, great work from a 16v.. can we have the full spec?

[RobT]

Spec is:

2L 16V - under 2000cc (class regs limited)
2L non-16V block, short block
VW forged 92.8mm crank 'with some work'
Arrow H-beam steel rods
JE custom forged pistons - quite high CR
Flowed big valve head with custom valves
Arrow solid lifters
Titanium valve caps and special springs
Cat billet cams with verniers
ARP fasteners throughout
Badger-5 DTH 45mm TB's, custom billet velocity stacks
Cosworth DFV (yes as in F1 engine) airfilter
Cossie injectors
Cossie plugs ('8's)
Lumenition ECU
Vauxhall XE coil with Lumenition amp
4 branch 4-1 design manifold from Awesome GTI (with a couple mods in collector area), Milltek Ibiza Turbo 2-box 2.5" system
Dry sump oil system

Cheers

Rob
Edited by: RobT

[vw_singh]

Bet you were itching for someone to ask the spec! [;)] [LOL] . Very impressive Rob. Your coming to Mallory Park are you not?

[prof]

not quite a bolt it together in the shed spec that one [;)]

[VR6T]

not quite a bolt it together in the shed spec that one [;)]


But if it had been, that's worth at least another 0.5 brake... [;)]

[Tubthumped]

And the cams will remanin secret...?

[ianb]

A proper engine there Rob.....nice power and torque well done [;)]

Ian

[AlexB]

Very impressive!! Great power.

[edc1]

And the cams will remanin secret...?

Competition car - can't give all the game away.

[Andy99]

are JBS good at RR tuning then? they are quite close to me and i fancy a good set up on my mk2 16v.

any of the chesterfield lot used 'em for a RR tune rather than a group RR day?

[H8SV8S]

Rob, you beat me by 2.4whp!!! fatherless child [LOL] Great results [=D>]

[Tubthumped]

And the cams will remanin secret...?

Competition car - can't give all the game away.

I know - but it's always worth asking. [;)]

[Riley]

sweet set up and result! [=D>] cant wait to build my own!

any word on the cams? [;)] [;)]

[edc1]

Could always look at the Cat cams catalogue and see which are good for 8.5k rpm, solid lifter ...

[Riley]

been looking,dont you worry [LOL]

[edc1]

Email Bill

[Riley]

will do nearer the time m8 [:Y:]
need some room before i can even take the lump out of the donor car. [><]

[RobT]

Bet you were itching for someone to ask the spec! [;)] [LOL] . Very impressive Rob. Your coming to Mallory Park are you not?

I am going to Donnington this weekend (14th) and providing all goes well and there are any spaces left then I will be at Mallory.

Cheers

Rob

[RobT]

A proper engine there Rob.....nice power and torque well done [;)]

Ian



Cheers Ian - just need to see if it goes as well as it should on track now (although I suspect it might be ok given how it is on the road [;)] )

Did you say you were coming to Donny this weekend ?

Cheers

Rob

[RobT]

And the cams will remanin secret...?

LOL. They are from Cat and are billet - see Mr Brockbank for details but I'm not promising mine are out of the catologue

This is the secret bit - and even if I did tell you they would probably not work on most motors, these only work well with rather higher than normal CR's

Carn't tell you everything can I [:D]

Cheers

Rob

[RobT]

are JBS good at RR tuning then? they are quite close to me and i fancy a good set up on my mk2 16v.

any of the chesterfield lot used 'em for a RR tune rather than a group RR day?

Dont know if JBS technically do RR tuning - as far as I know only Stealth 'RR tune' 16 valvers with stock managements

Good to go there for a RR day though

Rob

[RobT]

Rob, you beat me by 2.4whp!!! fatherless child [LOL] Great results [=D>]

ta - need one of them steel cranks like yours though for upgrade 2 (after 48's)

Cheers

Rob

[Tubthumped]

And the cams will remanin secret...?

LOL. They are from Cat and are billet - see Mr Brockbank for details but I'm not promising mine are out of the catologue

This is the secret bit - and even if I did tell you they would probably not work on most motors, these only work well with rather higher than normal CR's

Carn't tell you everything can I [:D]

Cheers

Rob

[LOL] [LOL]

I didn't imagine for a second that you could simply buy those cams and get those results - nearly all of us know thats not true of any combination! [;)] [LOL] [LOL]

Fantastic figures though mate... that spread of torque is amazing. What part of the spec sheet contibutes to giving it that kind of torque? Is it to do with the high CR?

[RobT]

Its got a 'thing' on it [;)]

Cheers

Rob

[Tubthumped]

lmao [LOL]

[prof]

john noble in chesterfield runs a rolling road and is a good lad, not sure of his k-jet knowledge tho, make sure he know about the WUR trick before going

[Andy99]

cheers for the replies,

where is John Noble? does he have a garage or tuning shop etc.

[ianb]

Rob.......I will try and get to Donnington although Mallory is a week after.

Ian

[Tubthumped]

Its got a 'thing' on it [;)]

Cheers

Rob

Delete your PM's!

[RobT]

Its got a 'thing' on it [;)]

Cheers

Rob

Delete your PM's!

Done

[Riley]

mmmmmm
Edited by: riley

[badger5]

Ickle Ibiza running with Aquamist on and off... Guess whic plot is which?[:D] Nice little gain for squirting in some water..
Figures are at the wheels not flywheel on my plot at JBS on sunday with RobT's motor.. which was so loud!!! Woohoo.. valvers rock! (I so miss the old Jetta)

JBS's dyno does 'lag' rapidly accelerating engines which is why the runs terminate before the engines do.. by approx 500rpm.. Not sure why, software thing.

On the day, 210 Leon Cupra-R read 210bhp so it pretty much read what you would guess to be realistic figures.

http://badger-5.com/bin/Dyno/ibiza-jbs-071104-small.jpg
Edited by: badger-bill

[badger5]

Its got a 'thing' on it [;)]

Cheers

Rob

[LOL] LMAO [LOL]
not a hoogamaflip... but a thing.. Ahhhhh... well thats it then.. [:D] [:Y:] [:o)]

[RobT]

JBS's dyno does 'lag' rapidly accelerating engines which is why the runs terminate before the engines do.. by approx 500rpm.. Not sure why, software thing.



Does this mean that all the figs are offset by 500rpm from reality ?

Cheers

Rob

[GVK]

Its got a 'thing' on it [;)]

Cheers

Rob

[LOL] [LOL] [LOL] [LOL]

Blame the Warsteiner for that statement [;)]

Ace results Rob [:Y:]

[badger5]

JBS's dyno does 'lag' rapidly accelerating engines which is why the runs terminate before the engines do.. by approx 500rpm.. Not sure why, software thing.



Does this mean that all the figs are offset by 500rpm from reality ?

Cheers

Rob
Yep.. think thats what he said.. Same for mine.. If lagged then under reading perhaps..? OK for slow accelerating engines..?

[GVK]

Vince was saying today, the prob with JBS new rollers is that they can't vary the load as he can with the old Ram12 , he has full control over the load where as their's only has settings for small, medium, large powered engines?

We were chatting about rr's and he was saying the new ones don't have the 'control' that the old one does, useful for mapping and the like.

Just what he said today.
Edited by: G_V_K

[RobT]

Write up, video and dyno figs now here

http://www.seatcupra.net/JBSrollingroadday_071104.htm

Cheers

Rob

[badger5]

Write up, video and dyno figs now here

http://www.seatcupra.net/JBSrollingroadday_071104.htm
Cheers

Rob


{edit for link}

[badger5]

Vince was saying today, the prob with JBS new rollers is that they can't vary the load as he can with the old Ram12 , he has full control over the load where as their's only has settings for small, medium, large powered engines?

We were chatting about rr's and he was saying the new ones don't have the 'control' that the old one does, useful for mapping and the like.

Just what he said today.

Piper Dynamometers (http://www.piperdynamometers.com/rolling.htm)
are what James has..
Has load and transition settings from inertia to braked.. but not like a Sun RR

Edited by: badger-bill

[GVK]

Spec is:

2L 16V - under 2000cc (class regs limited)
2L non-16V block, short block
VW forged 92.8mm crank 'with some work'
Arrow H-beam steel rods
JE custom forged pistons - quite high CR
Flowed big valve head with custom valves
Arrow solid lifters
Titanium valve caps and special springs
Cat billet cams with verniers
ARP fasteners throughout
Badger-5 DTH 45mm TB's, custom billet velocity stacks
Cosworth DFV (yes as in F1 engine) airfilter
Cossie injectors
Cossie plugs ('8's)
Lumenition ECU
Vauxhall XE coil with Lumenition amp
4 branch 4-1 design manifold from Awesome GTI (with a couple mods in collector area), Milltek Ibiza Turbo 2-box 2.5" system
Dry sump oil system

Cheers

Rob
Edited by: RobT


Proper job [:P]