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Just fitted my SC46 and it is a stunning pice of kit!
Fits like a glove!
LOT more responsive then my old Blouch dom III.
Just got to get a new proper tune for it.
Let's see what 2 bar and E85 can do! Will post my graph later.
Kev, what's the A/R, and also the cm^2 area of each of the 2 entry ports of the 'first gen' SC42 Billet Twin Scroll? And also, the same Qs for the super duper new SC42 B/T.S.?
Also the same Qs for the SC46 Billet T.S.?
Hi,
all our original twin scrolls used the standard P25 housing machined to suit, I think they are around .63 A/R.
The housing was not big enough and the exchange issue was a bit messy so a new housing was cast, its slightly larger than the P25, not sure exactly by how much but it has allowed us to machine it big enough to create the new SC50 Billet twin scroll.
The range of SC Billet twin scrolls are a true twin scroll with twin volutes and twin waste-gate buttons, just need something to bolt them onto .
the hot side wont be that big, it had to be cast slightly bigger so we can use the one housing on all the Twin scroll Billets, just machine to suit....
lol I know that.
I was just speaking hy...pathetically i.e. if it just happened to be @ 0.73, then would it affect spool-up for the worst?
__________________ 384.3 bhp . . . 349.2 lb ft . . . Mods fitted by API . . . Remap by JGM . . .
Hi,iam thinking of strokeing my1996 classic sti with a 2.1 kit,what turbo would you sugest,and supporting mods for say 380bhp to 400bhp,ive got the brembo's and the 6 speed already,just need a shopping list?
Hi,iam thinking of strokeing my1996 classic sti with a 2.1 kit,what turbo would you sugest,and supporting mods for say 380bhp to 400bhp,ive got the brembo's and the 6 speed already,just need a shopping list?
Thanks,
Pete.
Hi,
the SC42 billet would do the job nicely, in stock at £1250.00 + vat.
Is this also the finalised price of the latest SC42 Billet, genuine T.S. unit too (as shown above)? Or you still deciding on its price?
Hi,
no, the twin scrolls will be more expensive due to the custom Twin scroll housing, I reckon they will be approx £250.00 more than their single scroll brothers.
Just fitted my SC46 and it is a stunning pice of kit!
Fits like a glove!
LOT more responsive then my old Blouch dom III.
Just got to get a new proper tune for it.
Let's see what 2 bar and E85 can do! Will post my graph later.
no, the twin scrolls will be more expensive due to the custom Twin scroll housing, I reckon they will be approx £250.00 more than their single scroll brothers.
Cheers
Kev
Oops, of course (forgot about the new, integrated exh. side).
__________________ 384.3 bhp . . . 349.2 lb ft . . . Mods fitted by API . . . Remap by JGM . . .
Well, the SC40 has 'old technology' sleeve bearing, instead of rollers, so that lends itself to do so, for sure. Also, being based on a TD05H 20g assembly, then they're also considered tough units, so you do have everything possible 'in your favour'.
I was thinking of doing the same on my own 20g... But probably won't, as I want to extend he tubby's life. Just means I'll have to put up with 'being mocked' for my 'chavvy' VTA DV's noise......
__________________ 384.3 bhp . . . 349.2 lb ft . . . Mods fitted by API . . . Remap by JGM . . .
Last edited by joz8968; 07 February 2012 at 18:57.
...BUT... comes with the proviso that you most probably will reduce the turbo's life expectancy, due to the unavoidable introduced stress against the compressor blades and, by extention, the CHRA shaft's sleeve bearing.
There are plenty of people on here running DVless.... But then that's no comfort to you, as it's not your turbo.
If in doubt, then I wouldn't do it -- your call...
__________________ 384.3 bhp . . . 349.2 lb ft . . . Mods fitted by API . . . Remap by JGM . . .
Last edited by joz8968; 07 February 2012 at 20:07.
If you dont want the chav sound and are worried about the stress of running dv delete on your current turbo,just put the standard recirc valve back on,they run better with them on anyhow matey.
__________________ ITS BETTER TO BURN OUT THAN FADE AWAY
just tested the all new SC36 Billet twin scroll and WOW !
What a spooler, data logging on the road shows 1bar at 2665 RPM and its on full tilt by 3000 RPM,
Boost and afr.
This engine is a standard spec "C" lump in a classic GC8, running on an STI top mount, engine management is Syvecs, the car was already on an early SC42 billet twin scroll and a 20% meth mix, so the above graphs are also on a 20% meth mix, methanol usually adds around 10% BHP.
The above turbo is the all new SC36 (B) Billet twin scroll, its one of two new SC36 T/S units we are trying, this one has a bigger turbine wheel as used in our SC42 strapped to a 36 Billet comp wheel, wonder what the smaller turbine version will spool like.
cheers
Kev
Last edited by The Gaffer; 10 February 2012 at 17:48.
Reason: added the bit about it being on a top mount
So on V-P only the new SC36 B/TS should easily do on or about the 360bhp then! (403 / 1.1 = 366)
And all that with stunning TD04L-like spool-up!
As you say, the version with the smaller turbine wheel will surely spool exactly like a TD04L i.e. maybe full boost by circa 2.5k!?!?!
Hi,
that's what we are hoping.
On the road its on the money all the time, stunning spool and power all the way through, its achieved the same power as the early SC46 twin scroll but with far better spool, its a winner.
Thanks for every ones interest in this thread and there is much more to come.
Location: Enginetuner Plymouth for 4wd RR Mapping Apexi Ecutek Simtek Proper Garage More than just a laptop!
Posts: 1,805
Quote:
Originally Posted by The Gaffer
Hi,
just tested the all new SC36 Billet twin scroll and WOW !
What a spooler, data logging on the road shows 1bar at 2665 RPM and its on full tilt by 3000 RPM,
Boost and afr.
This engine is a standard spec "C" lump in a classic GC8, running on an STI top mount, engine management is Syvecs, the car was already on an early SC42 billet twin scroll and a 20% meth mix, so the above graphs are also on a 20% meth mix, methanol usually adds around 10% BHP.
The above turbo is the all new SC36 (B) Billet twin scroll, its one of two new SC36 T/S units we are trying, this one has a bigger turbine wheel as used in our SC42 strapped to a 36 Billet comp wheel, wonder what the smaller turbine version will spool like.
cheers
Kev
Looks great Kev, now get that 50 on it and let us see what she'll do
Will post my graph later.
VTA DV's noise......
ITS BETTER TO BURN OUT THAN FADE AWAY
