Volumetric efficiency is not an absolute to horsepower......

Merely a way of measuring the effeciency of the engine as an air pump.

And it's not that long ago that engineers and mathmeticians didn't think you could exceed
a VE of one and now there are production cars doing it........

Too many vairables on the inside of an engine to come up with a sure fire rule of thumb..

But when it comes to what a blower will add I think the old racers rule of thumb makes sense.

If you move twice as much air...you get twice the power.

Zag

It has taken many searches to come up with the info I have so far and getting my head around it has been a learning expierence.

The end result will be that I get more HP and that is what I am after.  My main concern is the correct ratio to spin the SC at to get 5-6psi boost.  I think I will have it pretty close, but only trial and error will tell.

Any thoughts on water/metho injection?

Water and methanol injection is a good way to
increase power and reduce detonation, you can
add up to 50% methanol to water, over that amount
there is no additional cooling, tho it will enrich the
mixture more. Also you can inject as much as 50%
the volume of water/Methanol mixture, as the fuel
flow rate, over this volume there is also no additional
cooling

That was my idea to aid cooling and increase the fuel.  I was going to use a 5th injector controller to control this.  Would a 50/50 water metho mix be ok to inject through a conventional fuel injector?  I was tossing up with this idea, but thought the injector may rust with 100% water.

It would need to be a large flow injector.

I thought most injectors were stainless steel,
anyone know for sure

I guess one high flow or two normal injectors would work fine.

Some may be stainless steel, but I have seem some corrode from bad fuel.  If I could find a stainless one that would do the trick.

I think the water methonal injection is just fine, but a couple of thoughts

(bearing inmind I don't know what your whole system is like)

If you design the system to achieve the boost pressures and hp levels you want...why do you need it. I have an old Ak MIller book on turbo charging at home and he described add on water injection as a band aid for poor design.....the case he was taking about was his!

If the engine is built to take it and the system can deliver it drop the intake charge temp using an intercooler system and you won't need it.

Just my .02CDN of humble opinion

Zag

Oh yeah.....late model injectors are generally stainless and compadable with ethanol fuels so I see no reason that they wouldn't work with methanol.

True, I wasn't thinking about the reason for
water injection, it is really a trick to push the
engine past design limits and get more power
without nuking the motor.  Wish I had it on the
Kick when I melted a hole in that piston   Cast
pistons should not have more than 5 PSI boost,
and under boost must be at a rich mixture, like
12.5:1 or you risk the same fate as my engine

What I have is a stock 1.6l 16v multi point EFI Suzuki engine.  I my thoughts were to fit the SC and run 5-6psi of boost when needed (the SC14 SC has a clutch and bypass valve)  like acceleration and rice stomping.    The idea of water/metho injection was to make the stock engine last longer by reducing the combustion temps.  I even thought of injecting the extra fuel needed through the SC.  An intercooler is an option, but would be very difficult to plumb and serv no much benfit when off roading.  When the stock engine dies (it has 200,000km now) I will re build it to suit the SC.

Fit the intercooler....

Reduces the intake charge temp so you shouldn't need the water/meth injection, increases power and will make the exsisting engine live longer........yes it is a pain but the results are worth it and you won't have to do it later....

Also, If it was me I would redo the engine before fitting the SC. Why, gives me time to gather parts and work out the details, do it now before I blow it to smitherens and have to buy more parts, possibly expensive ones....do it once do it right.

Zag