450SE - The Growler - Rolling Road and Tune

[TvR Driver]

The Growler is going to a rolling road for a power run and then a tune as the car seems overly lumpy and seems to struggle after about 4500 revs through the range

The previous owner replaced the airflow meter and then didnt set her up so it will be interesting to se what comes out of the session ( hopefully not the pistons )

I guess I may only have around 240 bhp as seems a long way away from the grff i had i wondered what do the other 450SE's out there make so i can at least have an idea of what we should be aiming for.

I will let you know how it goes

Ty

[rev-erend]

Could be a lack of fuel at the top end.

Make sure you have had a new fuel filter fitted recently, possible other issues
could be incorrect fuel pressure or fuel pump on it's way out.

Good luck on the rolling road though - it should show up what the issue is.

Edited by rev-erend on Tuesday 18th May 11:40

[pwd95]

Hoping to give mine a run on the rollers soon just to check the AFR etc. Mine feels very good though. Revs its nuts off at full bore, all the way to 6k rpm so I don't think there's much wrong.

[TvR Driver]

Ill have a look at the fuel filter before i go and ask themn to look at the fueling as most people following me have had to close their windows as when i accelerate they get intoxicated on petrol fumes !!!

Thanks Guys

[gsx600]

Mine was showing 260 at fly on one of the runs at Surrey Rolling Road, but had fuelling issues in the higher revs.

[grahamw48]

I took my 400SE for 2 sessions, first one showed (apparently common) weak mixture at higher revs.

Second session was to set up fuelling with new adjustable fuel reg, which cured the problem. Showed 230 @flywheel + 251 lbs torque.

[James MK]

240? Just wait until I get my cosworth/swaymar finished, should be back on the road within a few weeks with a bit of luck. Dyno test results available soon!

[broadside]

Last year my 450 was putting out 200BHP at the wheels and 238BHP at the flywheel. I was not convinced after the rolling road session that she was running spot on. A further tune up this year by someone who actually knows what they were doing made it feel much better, but I don't have any figures to substantiate that as it was not set up on a rolling road this time. I think with a new top end and a new ECU it would be capable of a reasonable increase in BHP but no where near TVRs quoted figure of 319BHP for the 450SE.

[TvR Driver]

HMMMMMM

Maybe 240 is a bit ambitious then !!

Have booked in for next tuesday

Then the truth will be bared :-(

Thanks for all the info at least i have something to aim at and the fueling seems to be the big thing to sort first

Thanks all

Ty

[rev-erend]

300 bhp is a top target for a 4.5.

Mine was around 270 bhp with 305 ft lbs torque.

I seem to remember DickyMints 4.2 SEAC just beating my bhp figure but with
less torque.

[TVRleigh_BBWR]

TvR Driver said:

HMMMMMM

Maybe 240 is a bit ambitious then !!

Have booked in for next tuesday

Then the truth will be bared :-(

Thanks for all the info at least i have something to aim at and the fueling seems to be the big thing to sort first

Thanks all

Ty

Most 400SE's that are set-up right will do 240BHP so you should be able to get a bit more with a 450.

I'm hopping to get 300BHP from my 4.5/4.6 Racer but that's with a lots of mods and a Emerald ECU

[BadRed]

Mine made 294 at WF08

Edited by BadRed on Thursday 20th May 16:49

[matt-man]

Hey All...

Just dug my Rolling Road page out from BBWF 2008 and my 400 Made 249.9bhp at the wheels and 277 FtLb of torque...

Just posting the size of my manhood!

[pwd95]

matt-man said:

Hey All...

Just dug my Rolling Road page out from BBWF 2008 and my 400 Made 249.9bhp at the wheels and 277 FtLb of torque...

Just posting the size of my manhood!

At the wheels!! That sounds like a flywheel figure for a good 400. That must be either a large capacity lump or a very special 4 litre.

In 07 my 4.5 J.E. engined Wedge made 202 at the wheels & 250ft/lbs at the wheels.

[grahamw48]

My 400 was 195 @ the wheels.

[Ant.]

TVRleigh_BBWR said:

TvR Driver said:

HMMMMMM

Maybe 240 is a bit ambitious then !!

Have booked in for next tuesday

Then the truth will be bared :-(

Thanks for all the info at least i have something to aim at and the fueling seems to be the big thing to sort first

Thanks all

Ty

Most 400SE's that are set-up right will do 240BHP so you should be able to get a bit more with a 450.

I'm hopping to get 300BHP from my 4.5/4.6 Racer but that's with a lots of mods and a Emerald ECU

My Griff 4.6 ,running Emerald pulled 300 last year....

[Henry Harris]

My 450SE has just been measured at 242 bhp at the wheels.

[grahamw48]

That's more like it.

[Waynester]

Henry Harris said:

My 450SE has just been measured at 242 bhp at the wheels.

Good stuff..

Makes me nervous as to what mine puts out...almost don't want to know in case i'm disappointed!

Edited by Waynester on Thursday 20th May 13:36

[cuneus]

Always amazes me how much TVR's vary e.g. Growl results from 2009 (I don't know about mods)

Name                model    HP 
David Airey         400      211
Chris Gilpin        500      269
Lord Grover         430      263
A. Pattison         500      300
Simon Holmes        500      276
DNB                 500      319
Howard Barnard      430      273
Barry Woods         500      273
Royce Smallbone     500      242
Andy Cripps         500      267
Martin Walton       500      264
Perry Waddams       5.2      318
Ian Rose            500      275
Nigel Print         500      297
David Pomfret       4.3      282
J. Barrans          500      278
D. Walden           500      303
W. Chamberlain      400      208
Colin Haycock       500      264
S.Moore             500      273
Bryan Curtis        400      230
Steve Daniel        4.3      260
Chris Wolsley       400      191
Andy Graham         400      201
5.0ltr              500      268.5