Note that the alternator in the Super charged Cortina is where the power steering unit would be in a Falcon EFI/X-Flow Cortina. Simple, huh?
On Dukeowindsors red XF and the other grey Falcon is in the stock position. Most show cars have no power steering, and TC/TD power steering is only found on retrofits from Hyundai Stellas (Cortina TF under the skin) and TF V6 Cortinas (Pommy Cortinas found in NZ in large numbers).Dukes' car is a daily driver, and hes fitted power steering, but he's got a little more room in there!
In the Cortina, the SC12 lives about where the alternator/air conditioning compressor sits on an A/C car. So if you hate the 4 turns lock to lock Cortina steering, you are gonna have a heck of a job fitting a power steering unit and an SC12.
The really amazing thing is how simple the drive set up is on it.
As for cfm at 12 psi of boost, I'd say 725 cfm as an educated guess. That 250 hp I quoted is about it for 12 pounds of boost. A stock 250 hp engine would need 450 cfm to get this sort of power. 12 pounds is a (12+14.7) divided by 14.7 of boost ratio....which is 1.81.
Heres my calcs..only because I've not seen anyone else publish them. There must be some clever dude with a ratin curve for the SC12 or SC14blowers. C'mon, were ANZAC's here, guys who have connections for petes sake!
This is mutiplied to the estimated 450 cfm flow figure for a "normal" 250 suped up to running at 250 horses. But when you supercharge a car, forceing air into an engine at that rate makes heat and expands the intake charge. The effective boost ratio is now about 1.60, depending on the intake temperature at the inlet ports. An intercooler would help, but why bother if you've got another 100 gee-gees?
Another option is to take the estimated 1.2 litres per revolution (Thats why it's called the SC12! The SC14 is 1.4 litres), and convert it to cubic feet displacement. Each rev would be around 0.514 cubic feet. If it did 10 000 rpm, at full tilt, it'd flow 5139 cfm if the air :-
a) didn't heat up
b) didn't suffer from efficiency loss.
But air does, and the cfm vs rpm curve isn't linear. So that's why I say 725 cfm is about it at 10000 rpm.
All pumps have rating curve...where is the one for this?
SC12/SC14 original fitments. Go to a wrecker, and get a Ryco or Fram aircleaner sales book, and look at the listings. These bookes tell you what filter fits what engine, but they also tell you if it was Supercharged! In NZ, we have heaps of grey Jap imports, and the major Toyota dealers carry stocks for the Jap imports as well as the ADR-spec Aussie/NZ Toyotas.
What I've heard is that the 16 valve 1.6 4AGE ran them as 150 hp engines for the Carina/Celica/Corona from 1993 until 2001, the 2.0 litre 16 valve MR2's from 1990 to 2001, the Lexus based Toyota Soarer, which had a 2.5 litre six, from 1990 to 1996. Some-one else who knows should set you straight.
I have friends in the trade, but they already think I'm crazy so it's better to get the info from another source, brother!
As for the intake neck for the upper radiator hose, grab the centre spacings and critical dimensions, and retrofit another. An alloy tooling plate spacer may help you fit one from another car. There's a bleed valve on it, via a small 7/16 bolt in the head casting, so don't worry about vapour lock or how it looks. Just make sure it won't cavitate on the inside!
