advise
Turbo Mini Forums

i'm looking for advise on a few parts, anyone who has experience building one advise would be greatly appreciated,
my plan is to build a 1275 turbo, have metro turbo pistons, cam, rockers, 1275gt block and 12g940 head, turbo kit is a T3/T4 hybrid
i,m thinking of getting, isky cam followers, ARP headbolts, rimflo valves and double valve springs.
i'm going to be running 20v corolla throttle bodies(not sure size) on custom inlet manifold and custom plenum chamber,
can anybody tell me if it will work??
thanks
kenny
P.S. i like hardship so thats not a problem!!

It won't work as you seem to be missing a vital part of the combustion process.

which would be what?

T4!?!?! Is badboyboost around?

If something is worth doing, it's worth doing half of.

I don't understand throttle bodies (especially plural).....

How are you intending to fuel it ???

Schrödinger's cat - so which one am I ???

they share a common fuel rail, i have friends who are engineers so they gonna make/modify anythin i need.

Just make sure that your friends are aware of the difficulties in fuel injection the A Series.

http://www.starchak.ca/efi/siamese.htm

Saul Bellow - "A great deal of intelligence can be invested in ignorance when the need for illusion is deep."
Stephen Hawking - "The greatest enemy of knowledge is not ignorance, it is the illusion of knowledge."

Edited by Rod S on 1st Dec, 2009.

Schrödinger's cat - so which one am I ???

can get the loom outta the corolla so could go down that route!

Did you read the above?

ye but doesn't port 2 feed cylinders 1+2 + port 4 feed 3+4? its the same princapal as dual carbs???? i will set the bodies the same(on a rolling road)
why would i need an EMS, (i'm presuming this is engine management system)

Edited by kenny2 on 1st Dec, 2009.

Oh dear..

EMS....

Engine Management System.

The box of electronics that operates the injectors on a "common fuel rail" or "throttle bodies" with injectors.

And everything else that needs to be managed.

Throttle bodies with injectors built in do not work by themselves.

So unless you are thinking of some hybrid arrangement with throttle bodies and an SU carb built in, I'm seriously confused as to what you are intending to do !!!

Schrödinger's cat - so which one am I ???

these are butterfly bodies, basically they look like miniature webers or SU carb's,

Edited by kenny2 on 1st Dec, 2009.

Schrödinger's cat - so which one am I ???

as above---------------^

And what is controling it?

Oh my fucking god.

Schrödinger's cat - so which one am I ???

forget i asked. i'll work it out myself

Kenny try to get the constructive bits out of this.
If you use a throttle body, you need an injector to allow the fuel in. This in turn needs some kind of engine management ECU to control it.
In turn, this leads to problems with the siamese ports, which is what PaulS linked you to above.

So in summary, the easy way is to use the carburettor.

Kenny. Don't take peoples comments the wrong way.

Fuel Injection and the systems that control it are very complex. It is nothing like bolting a carb on and giving it a quick tune.

As for the A series, it is made more complicated by the way the head is split into two inlet ports and 3 exhaust ports all on the same side. This makes getting the fuel in the right cylinder at the right time very very dificult. It took Rover a very long time to perfect it and their implmentation wasn't without it's problems/limitations.

Have a read in the 'A-Series EFI / Injection' section. Rod S and Paul S have both gone a long way into getting this working, both with good success.

Also somewhere there is a post on good reference books, I'm pretty sure there is one on fuel injection in there.

Yes, I should apologise for my sarcasm.

But I don't think you have thought this through properly.

Fuel injection on the A-Series 5 port head is NOT simple.

So, as Tom says, just start with a carburettor or, as Andy says, just have a very good read of the 'A-Series EFI / Injection' section of the forum.

Schrödinger's cat - so which one am I ???