specky tigra try to clime out the roller's at 612bhp

[Danny s-p]

http://www.youtube.com/watch?v=NQJh_y0nYUg

his car just get even better

[AdamK]

wooo:eek:

[Gareth_C]

that car is just something else.

[John]

Awesome!

[Jonlem]

Wheels don't appear to flap around anymore ;)

Well done to Andy and the guys at RS Tuning, I hope tomorrow goes well for him.

[Derick-Sport]

absolute animal lol

[bmw156]

thats mental power lol.

and is that the same place that sto got his DC5 tested?

[claire6069]

awesome car, will come a point soon though where something will give way......

[w88rdy]

Thats what happens when trying to push the boundries, good luck to specky and paul this year!

[Spudly]

awesome car, will come a point soon though where something will give way......




Yeah, the tarmac under the wheels with all that power lol

[Bubba]

strange shape power curve :/

[Southie]

Looks like it wanted to escape off the roller, awesome power output, I wonder how many mpg he gets lol

[AlexW]

strange shape power curve :/

Correct me if I'm wrong but, Isn't it where its hitting near full power quite low down the rev range?

[claire6069]

hasnt he managed to crack a block before though with alot less boost running through it?

[NOV4_SPORT]

Wow, looks well impresive, power low down in the rev range, most likley due to it only being used for quarter mile times and sprints iam guessing ?

iain

[AlexW]

Apparently ran 9.93 (iirc) down at santa pod yesterday before popping the head gasket.

[Hobbit]

I wonder how many gpm he gets lol

Edited :thumb:

amazing bit of kit :)

[G-nova]

[quote=Hobbit]Edited :thumb:

lol thats more like it lol

[Danny s-p]

some more info from aoc it got 620bhp on the rollers at the end of the night and his suspect head gasket is not it a lot worse.

and for those that was ask about the graph and the damage he has done

There is a flat spot on the graph and you can hear it on the vid, did that get sorted (been asked about it elsewhere)


it was a boost spike but we sorted it out..

its cracked the block so time for a rebuild doh

and hear his run at 620bhp
http://www.youtube.com/user/isaacnjames#p/a/u/2/8xzE6oIxGKY

[Danny s-p]

hasnt he managed to crack a block before though with alot less boost running through it?nope this the same engine he been on for the last 5 years he say's. chip out tv has managed to but this a first for Andrew by the looks of it

[Angus Closier]

This is an amazing engine, shame its in a tigra :cry:

[Danny s-p]

y cry about what car it in least it a vauxhall and doing the job right and there a reason it in a tigra

[Andy]

because gentlemen like these normally drive them...

http://t0.gstatic.com/images?q=tbn:ANd9GcT1P__7uMPA9BemW6szqgBznwzf5wUMR wh7MytNlcPmN20h1s2w

[Danny s-p]

lol andy

[mowgli]

yup, there is the hair dryer...
http://i38.photobucket.com/albums/e112/alexellson/Specky/Tigra-Mani.jpg

[Mieran]

Can anyone explain how it grips so well of the line?

Combination of good tyres and a diff or something else?

[mowgli]

drag racing tyres run at stoopid temperatures, they also run quite soft, so they put down a huge footprint, then the shear speed of the spinning wheels combined with the rubber create grip. the trick is managing the wheelspin to maintain maximum traction... and totally flooring it is not necessarily the best idea.. until it is moving that is

[TeddyThom]

New doner engine for a nova maybe?? lol

[MK999]

Drag tyres also pull in a pure newtonian impact force into the equation, if you've ever watched them in slow mo the leading edge literally smacks the floor and you can see it rebound/ripple on the back of the tyre. Being that fat, soft and generally huge they'll also balloon out as the car gets quicker, so it starts running on less tyre at a larger diameter towards the end of the run.

[wwmnw]

This is an amazing engine, shame its in a tigra :cry:

Lighter + more aerodynamic than most other Vauxhall's = obvious choice

[mowgli]

tigras weigh tons compared to a nova.... that back window affair is about 50kg

[wwmnw]

tigras weigh tons compared to a nova.... that back window affair is about 50kg

Nova isn't really aerodynamic though is it, even by yesteryear's standards. I'd imagine Specky has saved weight by replacing the rear window with a plastic one.

[bmw156]

what ever he is doing, it seems to be right.

[mowgli]

i wonder if his class allows for ice packing the i/c? that would release some more hp... his fastest time was on a night run at the pod, when the air is much cooler.

[MK999]

if you watch the video, it doesn't have a back window... at all lol

[Andy]

a tigra is better aerodynamic and weight distributed compared to a nova,which shares its aerodynamical characteristics with these........

http://t2.gstatic.com/images?q=tbn:ANd9GcTM8H_M6cNsjciGXPIWn0blQIdOzry-jPTYXF6uh_WMidxM9IxckA

[Mieran]

So on road tyres, he would be no where near 9s?

[MK999]

So on road tyres, he would be no where near 9s?

Not a hope in hell, he'd spend another 2 seconds spinning up on the line lol

[wwmnw]

Not a hope in hell, he'd spend another 2 seconds spinning up on the line lol
Didn't he do a 10 on road tyres?

I thought so.


Tigra
1: 9.86 Specky (C20LET slicks) 10.74 treads
2: 10.75 nova 8vt( 20ne slicks )
3: 11.2 Danny (c20LET slicks)irrc

[mowgli]

i think you'll find he runs on those massive comedy wacky race type wheels up the strip, cos of needing high gearing.. he probably has a set with a few grooves cut in them for class rules.....

[Danny s-p]

Lighter + more aerodynamic than most other Vauxhall's = obvious choicewow the one bit sense iv ever heard you say :thumb:

[boffer8]

Would love to see what figure that engine was making on a proper dynomometer (minus g'box etc), should be quickly approaching 660hp now?

[Danny s-p]

i think you'll find he runs on those massive comedy wacky race type wheels up the strip, cos of needing high gearing.. he probably has a set with a few grooves cut in them for class rules.....he got set 888 he was running at TOTB on team dynamic wheels and he got 10 second there

[Danny s-p]

Would love to see what figure that engine was making on a proper dynomometer (minus g'box etc), should be quickly approaching 660hp now?it on dyno dynamics the best rolling road reader you can get that put a true bhp at the wheels

[boffer8]

it on dyno dynamics the best rolling road reader you can get that put a true bhp at the wheels
Sorry mate that cannot be said (due to so many variables in gear clusters, clutch slip, bearing friction etc ), the only realy way to get a true figure is a direct fit dynomometer ;)

Another point is that is a duel roller dyno, this also increases friction beyond what is seen in real life situations, dont get me wrong it may have been very recently calibrated leading to a good figure, but it still wont be exact, thats all im saying ;)

[Jonlem]

To be fair the DD setup is very accurate within a few hp of dyno figures.

They all run the same calibration so if you took the same car to 3 different garages the figures should all be the same pending that the air temp hasn't changed ( which ofcourse it always will of )

The engine is 620 @ the fly, it won't gain much on a dyno at all, if anything, nor should it.

[claire6069]

correct me if im wrong here, but having the bonnet up whilst on the dyno releases alot of heat from the engine bay and so would affect the bhp as it will be running cooler than when its actually being driven - with the bonnet down?

[Adam]

Impressive as ever.
Does anyone know what sort of weight the car is?

And crossing the line at 140+ mph will mean aerodynamics will be having an effect on things, so probably wise that it aint in a nova tbh lol

[MK999]

correct me if im wrong here, but having the bonnet up whilst on the dyno releases alot of heat from the engine bay and so would affect the bhp as it will be running cooler than when its actually being driven - with the bonnet down?

Not really, just help account for the fact there's not a 140mph wind cooling it, not to mention the ram air effect specky will get having his filter sat in a high pressure area.

[AdamK]

does anyone know if theres a project thread for this?

[Jonlem]

does anyone know if theres a project thread for this?

There isn't one, its secret squirrel