V8S Dyno chart
Discussion
Hi all,
Thought you might be interested in commenting on my chart and perhaps compare to your V8Ss.
Video here:
http://www.youtube.com/watch?v=QNmm95VzObU
Thought you might be interested in commenting on my chart and perhaps compare to your V8Ss.
Video here:
http://www.youtube.com/watch?v=QNmm95VzObU
Barkychoc said:
I don't know what a realistic figure is but my overall feeling is that its a little low - I'd certainly have liked to have seen it over 200.
Is the cam original and over 60000 miles?
Cam is a Typhoon, fitted in 2006 when the engine was rebuilt. Car is currently on 74,000 if that's what you mean.Is the cam original and over 60000 miles?
Graham,
Its very difficult to say whether its low or normal as all rolling roads read completely different, if the car is standard without modification then as the original power output was actually closer to 220bhp maybe some at 230bhp then its feasible that a 19 year old car with 74k miles might be down on power and be lower than this. However that figure does seem a little low, so I would think that certain parts are in need of replacing, like the Cam etc.. My original dyno was around 225bhp and mine was a pretty strong car, after the work I had done it was much stronger, dyno below. If the car still feels good Graham and its not lumpy then I wold not worry about it as these are all just pub numbers anyway, like I said there is no 'standard' for rolling roads so your 198 may well be closer to 225 on a different dyno......
Its very difficult to say whether its low or normal as all rolling roads read completely different, if the car is standard without modification then as the original power output was actually closer to 220bhp maybe some at 230bhp then its feasible that a 19 year old car with 74k miles might be down on power and be lower than this. However that figure does seem a little low, so I would think that certain parts are in need of replacing, like the Cam etc.. My original dyno was around 225bhp and mine was a pretty strong car, after the work I had done it was much stronger, dyno below. If the car still feels good Graham and its not lumpy then I wold not worry about it as these are all just pub numbers anyway, like I said there is no 'standard' for rolling roads so your 198 may well be closer to 225 on a different dyno......
gifdy said:
Hi Mike - Seen you hanging around this corner of PH. Thinking of coming back to us ?
There is always a chance, I have first refusal on my old V8S I did think of buying one recently for a bit of fun for the summer as our 6 week old disco was stolen in May leaving us with one car until I get the new one at the end of Sept....Hows you anyway mate, been a while, still at Motorola? hows the little one, must be 2-3 by now, hope to catch up over a beer sometime....
Later Mike
Go on, go oooan, go oooan, go ooooan !
All good thanks. Jnr is now 2 1/2 but she can climb into the drivers seat and start the car herself. That's my girl !!
Still at Motorola but will be NSN by the end of the year (check the news)
Cars undergoing a refurb at the moment so we'll need to organise a bevvy once it's done. You can tell me it's still slower than yours
(sorry for hijack everyone - just good to hear from an old S stalwart ! )
All good thanks. Jnr is now 2 1/2 but she can climb into the drivers seat and start the car herself. That's my girl !!
Still at Motorola but will be NSN by the end of the year (check the news)
Cars undergoing a refurb at the moment so we'll need to organise a bevvy once it's done. You can tell me it's still slower than yours
(sorry for hijack everyone - just good to hear from an old S stalwart ! )
gifdy said:
Go on, go oooan, go oooan, go ooooan !
All good thanks. Jnr is now 2 1/2 but she can climb into the drivers seat and start the car herself. That's my girl !!
Still at Motorola but will be NSN by the end of the year (check the news)
Cars undergoing a refurb at the moment so we'll need to organise a bevvy once it's done. You can tell me it's still slower than yours
(sorry for hijack everyone - just good to hear from an old S stalwart !)
All good thanks. Jnr is now 2 1/2 but she can climb into the drivers seat and start the car herself. That's my girl !!
Still at Motorola but will be NSN by the end of the year (check the news)
Cars undergoing a refurb at the moment so we'll need to organise a bevvy once it's done. You can tell me it's still slower than yours
(sorry for hijack everyone - just good to hear from an old S stalwart !)
Believe me I would..... But we have our eyes on moving to a new home which is going to put an end to an extra toy ..... The 911 will have to do for now....
I would
A friend had his 4L chim tested on a rolling road and it made 196bhp. The chap operating the road told him that this was in the normal range for a 4L chim and that the car could make a couple of extra BHP with new injectors (running a touch lean). Given that TVR rated chims at 240bhp (and I think the bible says 220bhp is about right) I thought that this was a bit low, but I have also suspected that this could be due to variation between different dynos.
Ralph
Ralph
Graham
Take it up to Austec, gives you a fair comparison and then add a Mark Adams chip installation on the rolling road. Get you up towards original 240, or it will confirm yours is good now.
Or else ignore the numbers and just enjoy it
I reckon 196 is about right, I had 174Hp & 224 lb/ft and yours was a bit quicker than mine, the figure feels about right
Take it up to Austec, gives you a fair comparison and then add a Mark Adams chip installation on the rolling road. Get you up towards original 240, or it will confirm yours is good now.
Or else ignore the numbers and just enjoy it
I reckon 196 is about right, I had 174Hp & 224 lb/ft and yours was a bit quicker than mine, the figure feels about right
In which case thats a good plot.
I can comment from both sides having an engine that was a little tired and now having been rebuilt.
Before the engine was always a bit lethargic to rev and performance while good wasn't amazing.
After rebuild its very keen to rev and I can only describe performance as mental.
I've had a rebore due to a ridge around the top of one bore, new pistons, rings etc and a real steel dw268 cam recommended by Rob Robertson. If you read the description of the cam you wouldn't buy it for a TVR (Its called stump puller) but I'm very pleased with performance it flies.
By the way I originally bought the cam you have as its listed for 3.9 EFi but Rob told me to send it back - he said it was too tame for a TVR and advised the DW268
I can comment from both sides having an engine that was a little tired and now having been rebuilt.
Before the engine was always a bit lethargic to rev and performance while good wasn't amazing.
After rebuild its very keen to rev and I can only describe performance as mental.
I've had a rebore due to a ridge around the top of one bore, new pistons, rings etc and a real steel dw268 cam recommended by Rob Robertson. If you read the description of the cam you wouldn't buy it for a TVR (Its called stump puller) but I'm very pleased with performance it flies.
By the way I originally bought the cam you have as its listed for 3.9 EFi but Rob told me to send it back - he said it was too tame for a TVR and advised the DW268
Edited by Barkychoc on Monday 9th August 09:57
Hello all from the Netherlands.
I was surfing around on the TVR fora and saw your messages.
Since more than a year I own a Ginetta G33 that is powered by a V8 4,0 liter engine. My research up till now made me believe that it is an engine fabricated by TVR Power (as confirmed by TVR Power after looking at pictures of my engine) and most probably the same engine as in your V8S. My plenum has a badge '400 SE'. I do not believe that my engine is the same as in a TVR 400 SE; that engine was supposed to deliver 275 hp. If they really did deliver that power remains the question.
Here is my dyna chart (I hope it is legible, I derived it as a JPG from a pdf-file!):
The most recent dyno chart is not yet available in digital format; I had the fuel chip removed from my ECU and a new fuel map was loaded on a new chip. At the same time my lambda probes were re-installed. Compared to above chart power decreased a bit (now 234,2 @ 5.534 rpm) and also torque (now 333,7 @ 4297 rpm). Engine runs, however, more smooth at idle and low to mid revs. I trust fuel consumption will improve in the future as a result of these modifications.Next little project is the installation of a balance pipe in my exhaust system.
Regards,
Miel
I was surfing around on the TVR fora and saw your messages.
Since more than a year I own a Ginetta G33 that is powered by a V8 4,0 liter engine. My research up till now made me believe that it is an engine fabricated by TVR Power (as confirmed by TVR Power after looking at pictures of my engine) and most probably the same engine as in your V8S. My plenum has a badge '400 SE'. I do not believe that my engine is the same as in a TVR 400 SE; that engine was supposed to deliver 275 hp. If they really did deliver that power remains the question.
Here is my dyna chart (I hope it is legible, I derived it as a JPG from a pdf-file!):
The most recent dyno chart is not yet available in digital format; I had the fuel chip removed from my ECU and a new fuel map was loaded on a new chip. At the same time my lambda probes were re-installed. Compared to above chart power decreased a bit (now 234,2 @ 5.534 rpm) and also torque (now 333,7 @ 4297 rpm). Engine runs, however, more smooth at idle and low to mid revs. I trust fuel consumption will improve in the future as a result of these modifications.Next little project is the installation of a balance pipe in my exhaust system.
Regards,
Miel
Graham
If thats the flywheel figure, then the "at the wheels" figure will be lower.
If an engine produces 240 at the fly then it will be maybe 200 at the wheels - the flywheel, drivetrain, diff etc will all drain power
Do you know if the TVR rated 240hp figure is supposed to be from the wheels or the flywheel ?
that will let you know if your off the pace and perhaps how much more power you could get if you chip it up or start changing the cams
It sounded good to me
If thats the flywheel figure, then the "at the wheels" figure will be lower.
If an engine produces 240 at the fly then it will be maybe 200 at the wheels - the flywheel, drivetrain, diff etc will all drain power
Do you know if the TVR rated 240hp figure is supposed to be from the wheels or the flywheel ?
that will let you know if your off the pace and perhaps how much more power you could get if you chip it up or start changing the cams
It sounded good to me
sleeptalker said:
Whoah!
I had my S3 V6 Dyno'd at Austec on Friday and reached 164bhp and 155 ft lbs. of torque.
They did a good job of smoothing our the overall power delivery though and I gained about 20% more torque between 3-4.5k rpms with some AFM and timing tweaking!
A
Is that on standard hardware (cams etc)?I had my S3 V6 Dyno'd at Austec on Friday and reached 164bhp and 155 ft lbs. of torque.
They did a good job of smoothing our the overall power delivery though and I gained about 20% more torque between 3-4.5k rpms with some AFM and timing tweaking!
A
Hiya
I know from looking through past receipts my S3 has had a full 'blue print' rebuild about 30k miles ago, was fitted with a 'fast road cam' (but type not specified I think) and 'tuned to ford stage 2'.
But it really only puts out standard rated power (minus a few horses from what the factory claimed I think)?
A
I know from looking through past receipts my S3 has had a full 'blue print' rebuild about 30k miles ago, was fitted with a 'fast road cam' (but type not specified I think) and 'tuned to ford stage 2'.
But it really only puts out standard rated power (minus a few horses from what the factory claimed I think)?
A
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