The Gaffer

Hi that is very true, to get the word Billet onto some manufacturers turbochargers they have simply copied the standard cast wheel.

This is a backwards step as billet alloy is more dense and therefore heavier than cast alloy, the reason ours work is that due to the billet alloy being stronger than its cast counterpart we can remove more core and make thinner blades without weakening the wheel, hence 33% lighter, approx, across the range.

The biggest trick however is in the aero, as Harvey states, and we had some help with that from a very high place.

cheers
Kev

harvey

iTrader: (48)

Thankyou Kevin. There is still more to come and better spool still on the T/S is my current objective so the next set of figures on your rollers will be very interesting.

s100bey

iTrader: (1)

Latest figures for my car with an SC46 on a 2.5 litre built motor mapped by Bob Rawle last week at surrey rolling road with both a v-power run and a 20% methanol mix. The car is simply sensational.

the peak torque is around the 530ft/lbs mark at 4600rpm with corresponding HP at same rev point of 460hp on Methanol. extremely responsive unit too.

this was running only 1.7 bar as the motor does not have the 14mm headstuds.


I havent scanned the graphs yet but will post them next week - awesome turbo.

wrx9181

iTrader: (2)

Wow very nice figures mate
I bet that's one FAF rd car

s100bey

iTrader: (1)

it certainly is!! here is some industrial estate off road testing of launch control with Anti lag e some of my older clips are were with 360hp we now have 503!! hee hee!!

s100bey

iTrader: (1)

power and torque on vpower and Methanol !!


Ignore this link!!

s100bey

iTrader: (1)

http://dl.dropbox.com/u/79974696/Sco...2012%20aug.pdf



Power at the flywheel
power at the wheels
Power and boost

TimH

iTrader: (11)

"Error (403)
It seems you don't belong here! You should probably sign in. Check out our Help Center and forums for help, or head back to home."

Infected by sti

iTrader: (6)

Fair play fella that thing looks epic on vids!

Whats the spec on it? Or is it posted somewhere further back

s100bey

iTrader: (1)

http://dl.dropbox.com/u/79974696/Sco...2012%20aug.pdf

Hmmmm not sure why this is not working dropbox clearly isn't as Public as it alleges.

Spec is 2.5 Litre, forged internals, V5 heads- unfortunately only 11mm headstuds so boost limited to 1.7 bar. Spec C 2008 6 speed Gearbox, Exedy Hyper clutch, I have my own range of custom rear driveshafts BTW which are much cheaper than other rally items and do not snap. So we can do the launch control "sidestep" butalised launches time after time with no snapped drivetrain.

s100bey

iTrader: (1)

http://db.tt/KVRxatNC

Try this one instead

TimH

iTrader: (11)

Links are now working - maybe it was a dropbox hiccup, or a TimH error lol. Graphs look excellent...will reply to your email shortly

XNWRX

Hi Kev,

Why does the SC50 with billet compressor wheel not shown on your website ? Does it diseapear for any reason ?
I'm looking for the best spooling turbo for my 2011 STi Sedan (with build engine, currently putting 450bhp with a laggy Tomei turbo) and want to put 480bhp on gaz pump. Would like to see full boost around or before 3500rpm (on road, 4th gear). It seems that the SC46 should match the spooling goal, but it would be too small for my target power goal, taking into account a little margin I would like to keep in regards to efficiency (T°).
I haven't seen any spool data (on road, not on the dyno) for the SC54, so I don't know what to expect from this one. If anyone can give me some real figures ?
That said, the SC50 would have been the best candidate for my goals, but I can't see it !
Another question : Does SC46, SC50 and SC54 are all 2.4" inlet (requirement for me) ?

Thks,

Xav

The Gaffer

Hi,

we dropped the SC50 as the SC46 evolved so well there was little point in stocking the 50 any more.

The SC46 does 460 BHP easily and may just hit the 500 BHP, certainly it will with a 20% methanol mix, and they spool brilliantly.

cheers
Kev

Abbylad

iTrader: (4)

Hello Kev, is there much of a market for the SC54's currently? Am amazed that no-one's posted up a graph of one on a built 2.5 yet. Having my 2.5 rebuilt now and having it pinned so the 54 is looking like the ideal turbo for me, just wish someone could show me what to expect (It'll be a while before I get chance, I need a new kitchen and the car will need a new ecu, headers, injectors, filter too...humph!)

banny sti

iTrader: (68)

https://www.scoobynet.com/general-te...-findings.html

TimH

iTrader: (11)

eek - that's a very laggy turbo then!!

banny sti

iTrader: (68)

Thats on a 2.1 Tim, so would expect spool to be better on a 2.5

The Gaffer

Hi,

please come and drive my car, its got an SC54 Billet on there and its far from laggy,

Remember that one is a 2.1 which we all forget is a mere 5% cc increase over a 2.0 ltr.

On a 2.5 these things spool like f*ck.

cheers
Kev

Abbylad

iTrader: (4)

Thanks for pointing me that direction Banny

Kev, Am i right in thinking that on the road spool up will be aprox 1000rpm earlier? And as that SC54 was on a 2.1 what rpm would you expect a 2.5 to be picking its heels up? 3500-4000rpm?

Thanking you

The Gaffer

Hi,

correct, on the road we see anywhere between 800 RPM to 1000 RPM increase in spool, which is why we insist on road testing vehicles and data logging them to make sure they are good to go before we sign them off.

On my 2.33 its on fire at 3200 RPM, its bang on for holding around that level and then adding the right pedal, at that point all hells let loose.

Also remember that the final drive has a lot to do with how the car picks up and spools on the road.

Cheers
Kev

IainMilford

iTrader: (15)

hi Kev

Do you have a graph of your engine and the sc54? I have a 2.35 in progress at the moment and would be interested to compare it to the likes of a GT30 ......

Cheers
Iain

Abbylad

iTrader: (4)

Thanks Kev, had better get saving....have you ever looked into setting up finance? Lol
P.s. have a uk 6 speed so 3.9 final drive.....i think?

The Gaffer

Hi,

here on V power.................






Here with 20% meth mix...............



on the road spool is around 800 to 1000 rpm sooner.

And look at the date, since then all the billet wheels have a new improved aero.

cheers
Kev

IainMilford

iTrader: (15)

Cheers kev, interesting!

What is the spec of the heads?

Ideally I'd like to hit 600 top end, this could be on race fuel or a strong meth mix, most of all I am after a nice spooly, driveable mid 500's.

I will be running avcs big port heads, ported, lateral fast road/race cams and syvecs ecu.

Do you think with my head spec and the new billet version 600 could be in reach?

Hammer man

iTrader: (25)

Just try to drive it on a dry day and remember to bring a spare pair of Y-fronts

The Gaffer

Hi,

when we mapped it there was more to come but no point pushing it too far as its on the original 2.2 CDB fitted from new, last thing I wanted to do was chuck a rod through the side.

Your spec should be good for nigh on 600 BHP with a meth mix or better still race gas.

My heads are standard STI 4 heads with DH 22 profile cams dialled in a bit wild, tick over and up to 2800 RPM its awful but 3000 upwards it so giving and smooth, begging to be booted.

Cheers
Kev

sonic93

iTrader: (16)

what are the standard sti 3 heads good for? when do u start playing with cams and valves etc?

ad uk

iTrader: (6)

Hi I purchased a brand new sc46 billet off yourselves And wondered if any one had rotated 1 yet ie clocked it round for shorter pipes etc because I have done it to mine for my build it's on a running in map at the minute and turbo is spooling at 2k rpm on actuated presure flat boost map and it's feels very good already I've got 500 miles left of running in then will let you know what power it is running 2.0 fully forged reversed inlet and inter cooler sc46 with Sti 4 heads cosworth gaskets arp bolts etc

The Gaffer

Hi,

I think you are the first to do that, be interested in the final results.

Keep us posted.

cheers
Kev