4.3 TVR Power speed 6

[Tvr Power]

rmc said:

Right, just got the news from Jason re my car. It has just finished it's dyno mapping session at TVR power today and I'm over the moon with the results. It's made a simply massive 415bhp at the wheelS, which works out at 477bhp at the flywheel. It's Dom's 4.3 kit built by Jason. It's got loads of torque as well but Ive forgotten the details in all the excitement.

I'm hoping Dom can post up some more details about the session but speaking to Jason he said that even the le mans racers didn't make that kind of power.

Woohoo I'm so happy!!!!!!

Dom where are you! Post some details up please

Rich

Edited by rmc on Wednesday 26th May 19:32

Looks like i really have to work on my 4.5 ltr package now this really is a stonking package well done Jason and his team at STR8SIX


Dom

[VARLEYHYD]

D14 AYS said:

rmc said:

477bhp at the flywheel.

WOW

Sorry, but that's incorrect.






It's 483BHP at the fly!!!!!!

Well done st8-six & TVR Power

[dvs_dave]

Bloody hell.....that's insane hp, and well done to all involved! Dom's gonna have to crack 500 now with the 4.5, unless there's something wrong with it. ;-)

Edited by dvs_dave on Thursday 27th May 00:57

[Tvr Power]

dvs_dave said:

Bloody hell.....that's insane hp, and well done to all involved! Dom's gonna have to crack 500 now with the 4.5, unless there's something wrong with it. ;-)

Edited by dvs_dave on Thursday 27th May 00:57

4.5 runs really well, covered 3900 miles now has for the 4.3 do we really need to go bigger yeah bigger is better 500 here we come

Dom

[dvs_dave]

Supercharger.....who needs one of those

This has certainly set the benchmark, and in a T350 with its "restrictive" exhaust. You're gonna need to put your mapping head back on to get your 4.5 to crack the magic 500.

Perhaps it needs to go into a Tuscan with the less restrictive exhausts? Are you sure it's running on all 6 cylinders.....dodgy coil pack maybe?

[VerySideways]

Bloody hell RC, i can well imagine that you're pleased! Congrats

[thainy77]

Awesome! good work all.

[The Pits]

Nice to see the power is still all there right up to 7500, so the S6's legendary top end is preserved despite the longer stroke. Very impressive.

An S6 that didn't rev wouldn't appeal to me.

[Gazzab]

I dont understand how these figures come about - a 4ltr Red Rose S6 is about 370 bhp? How can an 8% increase in volume increase the power by 30%?

[The Pits]

er because it's a lot more than just an increase in stroke.

all the internals are new. pistons, cams, you name it, it's not just the crank.

BMW's 3.2 straight six M3 engine produced 340bhp in standard tune and 360 in the CSL (still 3.2), so there's plenty of room for improvement from a standard 4 litre S6.

Taking the equivalent state of tune to 4 litres would produce 425 and 450bhp respectively.

So 470+bhp is entirely from a 4.3 straight six.

A 4.3 version of BMW's M3 CSL engine would produce 483bhp.

Edited by The Pits on Thursday 27th May 13:40

[Tvr Power]

Gazzab said:

I dont understand how these figures come about - a 4ltr Red Rose S6 is about 370 bhp? How can an 8% increase in volume increase the power by 30%?

Methodical engine build and bespoke MBE mapping

Dom

[rmc]

Tvr Power said:

Gazzab said:

I dont understand how these figures come about - a 4ltr Red Rose S6 is about 370 bhp? How can an 8% increase in volume increase the power by 30%?

Methodical engine build and bespoke MBE mapping

Dom

See my posts & piccies on page 12 of this thread for further details of the build.

My problem is now I cannot pick up the car until next weekend! - it's going to be a long week next week

looking at the printout looks as though BHP at the wheels topped out at 411ish BHP not 415bhp as originally stated. Still I'm not complaining

Regards

Rich

[HarryW]

Staggering results congratulations to all involved, that torque figure doesn't look too shabby either.

[T350 Al]

rmc said:

which works out at 477bhp at the flywheel.

By the power of Grayskull, that's insane!



Edited to ask; what's the difference between this latest unit and the one in Mr Varley's Sag that makes the extra power?

Edited by T350 Al on Thursday 27th May 19:27

[crimbo]

Awesome results !!!

[mgaut]

rmc said:

My problem is now I cannot pick up the car until next weekend!

I'm sure there are plenty of people who would be able to help with that one !!

[SeiW500]

That is one hell of an engine... My old Westfield had P2W Ratio of 500bhp and that went like st off a shovel....

Hope you got some nice sticky tyres, i've just fitted some Toyo R1R's to my Tamora and they feel really good, just thinking of dialing in a bit more neg on the fronts to get that planted feel in the corners (currently -1 all round)

Are you doing TVRCC Oulton Park trackday later in the year? Would love to see/hear that beast in action???

[smithyl23]

That is simply awesome! Would love to know what 0-100mph and 1/4 mile times your car is capable of.

[G20RG B]

Just been reading through this thread,, Some stunning figures coming through on the Power 4.3 rebuilds, anyone else had one and care to share there thoughts on it, and what about you guys that have had it in your car for a few months and done some millage, was it worth the extra money and how has it been performing.

[Mattt]

You're assuming the cars have been driven for the last few months

Traction would be interesting with one of the 4.3s in this weather.