500rwhp wanted..

500rwhp wanted..

Author
Discussion

Betz74

Original Poster:

32 posts

162 months

Wednesday 28th September 2011
quotequote all
We all have power figures on our minds from time to time and that figure for me is 500rwhp.. so about 575 at the fly.

Seeing as that figure is not going to be easy to achieve I sheepishly ask..

What needs to be done to the S6 to achieve it?

4.3 or 4.5 kit with a supercharger, bigger injectors and a fancy tune?

Or is it going to be prohibitive in the sence that the rebuilds on it would mean smart thing would be drop in a LS9 and be done with it? (unfortunatly I require S6 soundtrack)




dbv8

8,665 posts

226 months

Wednesday 28th September 2011
quotequote all
A 200 shot of nitrous would be the easiest option hehe

Betz74

Original Poster:

32 posts

162 months

Wednesday 28th September 2011
quotequote all
Haha, valid point!

But no, I have never been a fan of Nitrous.

Anyone know what superchargers they used in the Tuscan R development? or modern equiv?

Are there any problems associated with supercharging a stroker 4.2, 4.3 or 4.5 engine due to maxing the block out?

Just interested in what I am getting myself in for looking for that much power from a S6.

DonkeyApple

57,875 posts

175 months

Wednesday 28th September 2011
quotequote all
I own the only car that TVR tried to supercharge. They couldn't manage to control the heat.

A few have been built since, one by Jason at Str8six which he runs occassionally and another by Racing Green which runs but is currently awaiting some additional work.

Firms like RG and Power have seemed to iron out the vast majority of issues that were causing the reliability issues with the basic engines and you can now buy something that does what it always should have done. However, I'm personally yet to be convinced that increasing the cc and adding SC will result in a robust and easily useable product.

I think that with forced induction you can get a better result and product with a smaller cc s6.

But even then, with new engines delivering around the 400 mark with robust reliability, for me this is enough. biggrin

I'm also not convinced by the LS route. I think that the people who have gone down this path are finding far more 'consumables' down the line than anticipated.

Unless you are handy with spanners or more unhinged than average wink then my view is that the modern S6 engines offered by Power, RG and Str8six are the perfect power plants for the T cars and will give the least hassle.

PascalBuyens

2,868 posts

288 months

Wednesday 28th September 2011
quotequote all
Betz74 said:
We all have power figures on our minds from time to time and that figure for me is 500rwhp.. so about 575 at the fly.

Seeing as that figure is not going to be easy to achieve I sheepishly ask..

What needs to be done to the S6 to achieve it?

4.3 or 4.5 kit with a supercharger, bigger injectors and a fancy tune?

Or is it going to be prohibitive in the sence that the rebuilds on it would mean smart thing would be drop in a LS9 and be done with it? (unfortunatly I require S6 soundtrack)
To give you a short idea what has been done on mine, for it to achieve 483hp/440lbs. ft. (last year):

- all forged internals, DLC coated pistons, forged crankshaft, and all the fancy bits that RG offer for sale.
- FFF head
- Omex ECU
- water injection kit
- Rotrex C38 supercharger

Currently undergoing some work as DonkeyApple says...

Plan is to have the following installed:

- Syvecs ECU + sequential injection
- Chargecooler
- bigger capacity (still need to call RG for the final specs on that)
- FFF2 head with RG's VCT system.

I had a few discussions about this, as I really want to achieve 600bhp at least...

Will see where this gets me, if it doesn't work out the way I want, you may as well find a supercharged Speed Six for sale in a few weeks... and then it's indeed LS9 time for me, but with the car that was designed around it as well smile
-

Betz74

Original Poster:

32 posts

162 months

Wednesday 28th September 2011
quotequote all
Good insight DA, it's not like it hasnt been done so there must be some good info out there.

Maybe a mild bolt on SC kit is feasable for 3.6 and 4.0 engines if an efficient SC unit is found.

I noticed in another thread that it is suggested that Turbos are the future, in theory I agree but there will be more work in keeping the beast from catching fire and burning the car to the ground than with a milder SC solution.


I'm all good with the spanners and even the bespoke machining if I have access to the equipment! wink

The NA engines on offer @ 400hp are more than enough I do agree with that and I do loath the idea of using a yank crate engine in such a cool marque so it has to be S6


Betz74

Original Poster:

32 posts

162 months

Wednesday 28th September 2011
quotequote all
Pascal that is great info I'm looking for, I have sent an introductory email to RG and they were very comfortable with what I suggested and referenced to what must be your car.

Sounds quite close to what I am looking for also, I'll send an email your way sounds like a weapon.




Betz74

Original Poster:

32 posts

162 months

Wednesday 28th September 2011
quotequote all
I cant email you from the PH forum can you msg me with an appropriate email to discuss your experience?




SAGRIFF

2,312 posts

185 months

Wednesday 28th September 2011
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A 500 BHP 450 LB FT Speed Six Sagaris would be ideal, it would be awesome.

BCA

8,647 posts

263 months

Wednesday 28th September 2011
quotequote all
I think Joolz is turbocharging CeeJay's T350R racer?

Dom keeps banging on about turbochargers being the future too, so I think this will soon be an option.

500rwhp would probably be a bit too mental for most though... would love one personally. thumbup

Walford

2,259 posts

172 months

Wednesday 28th September 2011
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DonkeyApple said:
I'm also not convinced by the LS route. I think that the people who have gone down this path are finding far more 'consumables' down the line than anticipated.
Not sure what your getting at, i,m running a 420HP LS Tuscan
What 'consumables' do we need that a good speed six doesn't

DonkeyApple

57,875 posts

175 months

Wednesday 28th September 2011
quotequote all
Walford said:
Not sure what your getting at, i,m running a 420HP LS Tuscan
What 'consumables' do we need that a good speed six doesn't
That's the same bhp as I'm running in test mode so I wouldn't expect any issues if you have such low output.

The guys running bigger outputs, probably a torque issue are clearly finding things breaking down the line that aren't going to trouble us NA S6 chaps.

As the original poster was alluding to figures approaching 600 bhp I was assuming that he wasn't going to waste his time if he went the LS route with a 'lady shave' version. wink

Betz74

Original Poster:

32 posts

162 months

Thursday 29th September 2011
quotequote all
I think Pascals setup is right on the money for supercharging,

As for Turbos I can only think from Nissan RB26DETT expierience that 2x Garrett 707160-10 would be a good start for the S6 as they are internally gated and flow up to 400hp each

Generally considered laggy in the Nissan world the Speed 6's larger capacity would largly negate that issue, I'd still be interested in how it would be packaged, the engines landed position in the engine bay looks all wrong for turbo fitment.

However.. Bring it on I say, a Jetted Speed 6 would be an angry thing if there ever was such a thing that angry..

Can't wait to clear my workload and get into this smile

PascalBuyens

2,868 posts

288 months

Thursday 29th September 2011
quotequote all
I think if you position the turbo in the same place as my supercharger sits now, you might get away with it quite easily:

http://www.pistonheads.com/gassing/topic.asp?h=0&a...

Have to say I'm wondering about the idea that Ryan (from Syvecs) expressed at Goodwood, to have a twincharged car, does still run through my mind occasionally...

Brummmie

5,284 posts

227 months

Thursday 29th September 2011
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You rang? smile

Don1

16,047 posts

214 months

Thursday 29th September 2011
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As much as I like RG, I would make sure what you want is in writing, and there is an agreed price....

DonkeyApple

57,875 posts

175 months

Thursday 29th September 2011
quotequote all
Don1 said:
As much as I like RG, I would make sure what you want is in writing, and there is an agreed price....
Yup. As they don't publish specs and costs on their website then I would say that this is common sense.

spartridge

961 posts

216 months

Thursday 29th September 2011
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Don't think you'd need an LS9 Betz. An LS7 with a couple of bits would get you there...

Don1

16,047 posts

214 months

Thursday 29th September 2011
quotequote all
DonkeyApple said:
Yup. As they don't publish specs and costs on their website then I would say that this is common sense.
OP, I'd actually say that this should be the same for ANY garage you are talking to. smile

Betz74

Original Poster:

32 posts

162 months

Friday 30th September 2011
quotequote all
@ Pascal.

I think your supercharged setup is maybe better than forward fitment of a big single turbo, it would work but will mean a slower spool time, power delivery would be violent to say the least and drivability might suffer, another option is adapting an intergrated turbo/exhaust headder system such as the current factory Nissan, BMW and Porsche systems.

I'd be horrified if the engine became to muffled/athmatic sounding..



On the bottom end build I can't seem to find much detail on what new blocks are available, I did read that aftermarket improved engine blocks are available.

There seems to be billet cranks and forged rods and pistons available, but what is the differnt blocks?

Also looking to use Ti conrods, I can get these made by Paulter for around $1000 US each. Anyone know of UK based who can make Ti rods?

As for an LS conversion, the more I look at it the more I feel it is not inkeeping with a S6 TVR,

A 4.5 AJP8 with quad cams and 32 valves would hit the spot tho smile





Edited by Betz74 on Friday 30th September 07:18