Slightly down

[Jamesv6]

Just been speaking to Andy ( GDI ) you may have heard of them, a specialist tuning company based in Cambridge.

I asked if they tested the bhp of their cars before and after modifications are carried out.

He said both mine and Sluggers V6 were putting out just 240 bhp as standard. ( only slightly down ) :shock: Some put out a bit more apparently.

I would guess getting some V6's up to 300 bhp is rather more of a challenge.

 

[SimonV6]

take it back to Renault and complain, you paid for 255PS, and 255PS is what you should have......

Simon

 

[Jamesv6]

Did all the incendiary devices back in the 70's.

 

[Anonymous]

I reckon no traction on the rollers doesn't help though. That's my excuse anyway

 

[137699]

255PS is actually not quite 255BHP, as 1PS is slightly less than 1BHP.

255PS actually equates to approx 251BHP.

 

[Jamesv6]

I reckon no traction on the rollers doesn't help though. That's my excuse anyway

Any chance of seeing the printout from your test?

 

[Anonymous]

never got one there were people sat on the back though and they used loads of sticky spray to try and give it some traction.

 

[Jamesv6]

I think there are probably more brown V6's than there are rolling road printouts from GDI.

 

[DennisV6]

Thinking about getting mine RR, with the BMC CDA on and without to see if it has any affect.

GDI might be abit of a trek for me tho so ill be off to http://www.owendevelopments.co.uk

Im scared its gonna be well down on the power tho. :cry:

 

[® Andy]

When mine was RRed it was running at 280 BHP!

Sadly it was only in a dream last night . The strange things that influence our dreams :-?.

 

[Anonymous]

i hate companies who quote flywheel figures, it misleads people

 

[TRW1]

I agree Matt. I've seen figures assuming 20% or more transmission losses on 2wd.....!!

 

[Peter255]

Surely Power at the wheels is whats important.

My old Impreza had (calculated) 270BHP but only just over 180BHP measured at the wheels!!! A HUGE difference! Huge transmission losses. :cry:

My new Clio "only" has 250(ish)BHP but should be over 180BHP at the wheels!

Peter

Just don't remind me about the turbo's mid range torque! :cry:

 

[Anonymous]

I agree Matt. I've seen figures assuming 20% or more transmission losses on 2wd.....!!

I think they were going on 20-25%

Don't quote me on that though lol

 

[SimonV6]

here's a good read re trany losses....about 15% for a 2wd car they say?

http://www.pumaracing.co.uk/trans.htm


Simon

 

[john]

I've got a mk1 mr2 I do trackdays in and the transmission losses on those are huge, 125bhp at the flywheel and around 80 at the wheels.

 

[TRW1]

I've got a mk1 mr2 I do trackdays in and the transmission losses on those are huge, 125bhp at the flywheel and around 80 at the wheels.

You won't get an accurate flywheel figure without removing and putting the engine on a dynocell. The above figures I don't believe are accurate unless your clutch was shot. figures for flywheel derived from the wheels figure are purely calculation/guesswork. If you're saying MR2s have a book figure of 125@fly and yours measured 80@wheels then there is a problem with the car or the rollers I reckon.
I don't mean to get into arguments about who's car is more powerful then someone else's, I can get that on Cliosport.net, it's just that quoted figures for flywheels are often wishful thinking.

 

[john]

My mr2 hasn't been on the rollers as it's running fine and I'm not one for pub talk about power etc. The figures I quoted are generally well known amongst the mr2 community, the transmission really does seem to sap power.