well no harm in tryin to go where you ausminian's seem to steer clear of

it *shouldnt* be more than what i got quoted for a setup for twin carbies with a tune...

No harm at all, in fact I'm working on a similar project as we speak...

But, I highly doubt you'll get it all together and tuned for less than a carb.

So far I've spent nearly $1000 and I'm nowhere near going yet! To do it properly you need 2 wideband o2 sensors, and that alone will be $500+ then you have ECU, Injectors, fuel pump, throttle body, fuel rail, manifold etc, etc....

Not wanting to sound negative about it all, just don't want you to think it's a cheap project!

Andrew

nvb34n,
Are you thinking if running a wet manifold? So effectively an electronic carb. This is where the inlet manifold is full of air/fuel mix and the valves open and take what they please. This is the system that carbs use.

The alternative is a dry manifold (im a bit hazy on this, but im sure someone can confirm/deny my thoughts)(very welcome to enlightenment). Where there are injectors angled towards the valves that squirt the precise amount of fuel to mix with the right amount of air to go in the valve. As you can see its a very precise affair. So in other words very unreliable til you spend hours on a dyno fine tuning and trying different sensors and settings.

The dry manifold if done right is a fantastic thing, but its a mine field of things to look out for.

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Simplify and add lightness

Single point injection works by injecting fuel into the intake of the manifold, what you refer to as a wet manifold. Essentially replacing the carb an injector or 2.

Multi-point injection is having an injector for each intake port, so the mainfold only has an air.

There is also direct injection where fuel is injected directly into the combustion chamber.

plan on adopting a sort of single point inject with 2 injectors,

the siamese port problems would occur with carbys as well

cant see why you wouldnt be able to fuel inject these little monsters!!![/quote]

The siamese head problem is where you want to run a dry manifold, so only have air that meets the injectors as it travels into the head, or through the last part of the manifold, whichever you choose.

This problem does not exist with carbs, as it is a wet manifold, where the fuel is mixed before the manifold in the carb.

Out of interest, why do you think that carbs suffer from the siamese port problems?

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Simplify and add lightness

well as it says, the inner cylinders suck most of the fuel as they open first, surely the outer cydlinders couldnt force more air/fuel mix in a shorter time than the inner cylinders.

the outter would still run a bit leaner than the inner cylinders.

Yes they do suffer from the siamese head, but the difference is the fuel and air is sucked as a mixture into the valves, rather than air that has to be mixed with the fuel shot.

But this is not defined as a siamese problem, its down to the manifold, as the problem goes away with twin carbs.

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Simplify and add lightness

Yes they do suffer from the siamese head, but the difference is the fuel and air is sucked as a mixture into the valves, rather than air that has to be mixed with the fuel shot.

But this is not defined as a siamese problem, its down to the manifold, as the problem goes away with twin carbs.

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Simplify and add lightness