Discussion
Can anyone tell me why the ajp V8 makes less bhp than quoted in the manual, 300plus as opposed to 400plus or point me to the right thread (there are so many threads about bhp!!). I've heard stories of cars going back to TVR and being made to produce the quoted figures, but not what was done. TVR's website still claim 420bhp @6750rpm. Is the production engine and set up different from the one originally used? Don't get me wrong, I'm not disappointed with the Cerbera as 'standard', just curious as to the reasons for the 'low' power. Thanks.
AFAIK quoted power is usually from TVR's first engine with no ancillary systems attached and sitting on a bench. When they start producing them and fitting them into cars with all the drivetrain and systems running from them then power will go down, plus I'm sure the engines that go into the production cars will be detuned slightly from the first engine to give it a longer life between rebuilds.
FourWheelDrift said:
AFAIK quoted power is usually from TVR's first engine with no ancillary systems attached and sitting on a bench. When they start producing them and fitting them into cars with all the drivetrain and systems running from them then power will go down, plus I'm sure the engines that go into the production cars will be detuned slightly from the first engine to give it a longer life between rebuilds.
So maybe if they tweaked the RR S6 down to 350BHP... (Wishful thinking 
)
I think its always been a general understanding that the cars never quite perform as well as their 'press car' versions, but, and this is a BIG BUT, the cerbera 4.5 is waaaaaay off the mark in its power output... I mean I've driven beasts with power unworthy for the road, and based on the feeling, you know, that smack down feeling, I always felt around 400 horses or more.... but when I found out the horses were more in the territory of oriental exotica - I nearly smashed her up with a sledgehammer (and trust me, with my temper I most likely would have).... but come november, and she'll be a changed mutha!...
We know that Washy took his babe to the factory to get it sorted, I wander, did anyone else have that luxury?
We know that Washy took his babe to the factory to get it sorted, I wander, did anyone else have that luxury?
[quote=SXS ].... but when I found out the horses were more in the territory of oriental exotica[/quote]The oriental "exotica" is the reason I'd say that the figures are inflated, as a supercar Cerbera with the same output as an Japanese family car with a big spoiler and bonnet scoop would reflect badly on TVR due to the Max Power obsession with outright bhp.
Everyone seems to forget that bhp/tonne, torque and good flat delivery of both are far more important, as well as keeping the weight down so the car handles properly - Mercedes take note...
Just remember the Cerbera, even down 60bhp from factory spec will wipe the floor with many cars and is still more than powerful enough for most if not all drivers on the public road.
All IMO of course
Everyone seems to forget that bhp/tonne, torque and good flat delivery of both are far more important, as well as keeping the weight down so the car handles properly - Mercedes take note...
Just remember the Cerbera, even down 60bhp from factory spec will wipe the floor with many cars and is still more than powerful enough for most if not all drivers on the public road.
All IMO of course
froggie said:
I WAS DISAPOINTED TO,SEE"DISAPOINTING PERFORMANCE"
Froggie, you tried seeing if your car'll beat 147 yet? Had more than that out of 4th in both the Cerb and Tuscan, so I should hope so.
Power stats are only good for bragging in the pub, anyway... I'm sure there are plenty of super-tankers out there that'd humble all the AJPs put together. I'd still race one to a 1/4 of a mile, though!
ok figures taken in 4th,but fact remanes overated fron day 1,dose not do what it says on the box,im wun
dering wot the factory say it ways&actual waite,
sxs what r u doing to yours &how mutch cost to make it go,i get sick of wating for120 mph .
nice looking car and cheep,but wood sell it now and buy a family 4 door in favor of speed&reliability if thats wot it takes.(iwood only race over 14 of a mile incase it fell to bits)
dering wot the factory say it ways&actual waite,
sxs what r u doing to yours &how mutch cost to make it go,i get sick of wating for120 mph .
nice looking car and cheep,but wood sell it now and buy a family 4 door in favor of speed&reliability if thats wot it takes.(iwood only race over 14 of a mile incase it fell to bits)
froggie said:
ok figures taken in 4th,but fact remanes overated fron day 1,dose not do what it says on the box,im wun
dering wot the factory say it ways&actual waite,
sxs what r u doing to yours &how mutch cost to make it go,i get sick of wating for120 mph .
nice looking car and cheep,but wood sell it now and buy a family 4 door in favor of speed&reliability if thats wot it takes.(iwood only race over 14 of a mile incase it fell to bits)
My God, were you on glue when you wrote this?
andysgriff said:
ok figures taken in 4th,but fact remanes overated fron day 1,dose not do what it says on the box,im wun
dering wot the factory say it ways&actual waite,
sxs what r u doing to yours &how mutch cost to make it go,i get sick of wating for120 mph .
nice looking car and cheep,but wood sell it now and buy a family 4 door in favor of speed&reliability if thats wot it takes.(iwood only race over 14 of a mile incase it fell to bits)
My God, were you on glue when you wrote this?
God yeah, thats one seriously 'pissed' poster!
froggie said:
...i get sick of wating for120 mph...
It struggles to get to 120? I've never had any problems with any Cerbera test drives I've had getting there and beyond - sounds like you have something more intrinsically wrong perhaps? All testing took place on a private airfield of course
froggie said:
ok figures taken in 4th,but fact remanes overated fron day 1,dose not do what it says on the box,im wun
dering wot the factory say it ways&actual waite,
sxs what r u doing to yours &how mutch cost to make it go,i get sick of wating for120 mph .
nice looking car and cheep,but wood sell it now and buy a family 4 door in favor of speed&reliability if thats wot it takes.(iwood only race over 14 of a mile incase it fell to bits)
8 hours later and I think I've decoded that...
18BHP down = 5% loss in power. That's nothing - you won't notice anything below 10% or so. If your car's slow, it's sick. Having had a later, "not-so-urgent", 4.2 Cerb that could happily beat a Fezza 360 in a straight line, I'm not sure what's irking you. As far as I'm concerned, the 0-60 and top speed are right (assuming you've got the skills of Schumacher to put the power down off the line), and that's what counts. If you're struggling to get to 120, are you sure you're starting off in a low gear/changing up after third.
I once raced a mate in his VW Polo for a laugh. We both set off at the same time... first to 100 had to hold his arm out of the window. Thing was, I was only allowed to use 3rd gear. I hit 100 as he came up on 70 or so. All the performance you'll ever need...
Thing I don't get is this - the average 4.5 bangs out about 325 - 350bhp, thats just a plain fact of life and I can live with that. The Cerbera still accelerates like a rocket and according to my rolling road tester does the 0-60 times as claimed, tops out at just short of the 180mph limit if you care to try it anywhere. Why LIE about the BHP figures - it's MORE impressive that the car does what it does with LESS BHP. TVR do not need to mislead its customers - we're already hooked - Why not come clean and change the ad's?
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