Omega Owners Forum

Chat Area => General Car Chat => Topic started by: tidla on 29 June 2012, 22:59:47

Title: horses
Post by: tidla on 29 June 2012, 22:59:47
Remember watching good old top gear where the boys got there hands on some classic Italian supercars from the 70s.
(Crazy owners).
One of the challenges was to see how much power the cars had lost from factory standard. The results were .. loads.

I wonder what the V6 would dish out  10 years later?
Title: Re: horses
Post by: bigegg on 29 June 2012, 23:02:15
mine was dyno'd at 225bhp in 2009, when it was 11 yrs old.
Dunno what it was "out of the box" in 1998, but probably less  :y
Title: Re: horses
Post by: Andy B on 29 June 2012, 23:26:01
mine was dyno'd at 225bhp in 2009, when it was 11 yrs old.
Dunno what it was "out of the box" in 1998, but probably less  :y

10% over stock? or an over optimistic dyno?  ::) ::) ::)
Title: Re: horses
Post by: Field Marshal Dr. Opti on 29 June 2012, 23:29:07
Remember watching good old top gear where the boys got there hands on some classic Italian supercars from the 70s.
(Crazy owners).
One of the challenges was to see how much power the cars had lost from factory standard. The results were .. loads.

I wonder what the V6 would dish out  10 years later?


One of them, a Lamborghini Urracco ( I think) gave out 80 bhp at the rear wheels. Left the factory with  255 BHP.
Title: Re: horses
Post by: Field Marshal Dr. Opti on 29 June 2012, 23:30:33
mine was dyno'd at 225bhp in 2009, when it was 11 yrs old.
Dunno what it was "out of the box" in 1998, but probably less  :y

10% over stock? or an over optimistic dyno?  ::) ::) ::)


How much do you lose at the rear wheels?
Title: Re: horses
Post by: bigegg on 29 June 2012, 23:44:30
mine was dyno'd at 225bhp in 2009, when it was 11 yrs old.
Dunno what it was "out of the box" in 1998, but probably less  :y

10% over stock? or an over optimistic dyno?  ::) ::) ::)

dunno - was before my ownership, and I don't know what mods were on the car at the time (decatted perhaps?)
I just have the printout from "dyno demon"
Title: Re: horses
Post by: albitz on 29 June 2012, 23:50:55
Iirc around 30% is usually lost between flywheel and driven wheels.
Title: Re: horses
Post by: omega3000 on 30 June 2012, 08:24:43
Remember watching good old top gear where the boys got there hands on some classic Italian supercars from the 70s.
(Crazy owners).
One of the challenges was to see how much power the cars had lost from factory standard. The results were .. loads.

I wonder what the V6 would dish out  10 years later?


One of them, a Lamborghini Urracco ( I think) gave out 80 bhp at the rear wheels. Left the factory with  255 BHP.

Yes i remember watching that , wasnt that mr clarksons  ;D Shocking amount of power loss , wonder if redex would have increased its power  :(
Title: Re: horses
Post by: waspy on 30 June 2012, 10:06:04
mine was dyno'd at 225bhp in 2009, when it was 11 yrs old.
Dunno what it was "out of the box" in 1998, but probably less  :y

10% over stock? or an over optimistic dyno?  ::) ::) ::)


How much do you lose at the rear wheels?

Around 25%
Title: Re: horses
Post by: 2woody on 30 June 2012, 10:22:53
depending on how it's tested, you lose between 15 and 20 % througfh the transmission - anything up to twice that for an auto. Test in 4th for lowest loss ( 3rd for auto )

the "dyno" industry is a funny one. They're primary business is to give car owners bragging rights in the pub, and to that extent, I'd tentatively subtract 10% from their quoted figures. Owners doing significant development are generally wise to the above and only work on a before and after" improvement basis.
Title: Re: horses
Post by: Kevin Wood on 01 July 2012, 00:19:39
The only way to get a repeatable, let alone anywhere near accurate, figure from a rolling road is to do a proper coastdown at the end of the run to cancel out the losses. Not really worth bothering at all with an automatic gearbox IMHO. Even then, the rollers need to be regularly calibrated and maintained. As said, most are out to take your money and give you a "pub figure", so don't bother with accuracy. It's easy to fiddle it - so don't trust anyone you have paid to do tuning work for you. ;D