I have planed on doing the race to the sky in a year or two I think a turbo will be the best way to go in search for more power what is the best set up a Blow through system, draw through system , carby, EFI,? In dimlights picture of "DLR UM1" it shows a throttle body when you have a setup like this do you have to have a computer and injectors or does the throttle body control everythin? (and what is it off) go_the_datto how did you plumb up the turbos on the A12tt like to control boost and so on how did you plumb up the oil and water lines for lubrication?

sorry for all the questions but im stumped

For turbo stuff check the tech section there is an article on turbocharging that has been pointed out quite a few times now.

EFi is the best setup but also the most expensive. Basically the computer runs t he whole show. Injectors, throttlebody etc. The advantages of efi is you can use an intercooler.

1 turbo is easier to setup than 2 turbos and with the new technology available with ball bearing turbos there is no need to worry about lag.

Craig

the turbos I used had internal waste gates like many of the production turbos use.
The waste gate is pre set.
and the oil lines were just tee'd off from the oil pressure sender unit, and the return was just welded back into the sump above the oil level and I never had a problem with oil pressure

In order from "easiest" (relatively speaking of course) to hardest:
Draw through, blow through, EFI.
In order of performance from worst (again speaking relatively) to best:
Draw through, blow through, EFI.
(Before you start flaming me, I said relatively! They are all going to perform better than naturally aspirated, and all have advantages and disadvantages.)
The DLR UM-1 is just my way around not being able to find a proper EFI manifold for an A-series engine. It will require engine management (computer) to run the injectors and such. The throttle body in the pictures is off of a 2 liter Volkswagen Jetta.
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For the record, you can use an intercooler with a blow through carb also. But please don't use one with a draw through! Imagine if you will, the fuel falls out of suspension when the charge is cooled and fills the bottom tank of the cooler. You then have a very nice pressurized BOMB hanging out there in front of your bumper!
That's my $0.02 worth on the issue.

hmmm, not flaming you dimlight, but why do you say blow through setup offers better performance than draw through?

draw through is easier but in ultimate performance intercooler is even more important then boost level, thats why if u have future plans for same engine blow through is the right way tyo go.
barpk

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Throttle response. The fuel has to go though an awfully long and tortured path to get from the carb to the cylinders with a draw through. With a blow through, the throttle is right where the engineers put it in the first place, so throttle response should be the same as stock. Then there are the cold starting issues, but that's not a performance argument.
I guess once it is on boost, the performance difference is probably negligible, assuming the blow through isn't using an intercooler.

so say i got a computer,loom,throttle body and injectors off an no turbo 1.5 ltr EXA pulsar changed the a series to a electronic dizzy build a custom manifold as seen in DLR UM1 and fit the 1500cc injectors to compensate for the turbo

or do i need a computer,loom,throttle body and injectors a turbo car say 1300cc

bah...you guys are just making stuff up!

ultimate performance? If that's what you want you shouldn't even be considering carby turbos. or A series motors for that matter. The only reason for still doing carby turbo setups in this day and age is cheap horsepower. And that's a win for the draw thru setup.

intercoolers are nice, but when you're limited to 10psi there's not going to be huge performance gain when there are other ways of cooling the inlet charge. A simple water (or water/methanol) injected 14-16psi (or higher) draw thru system will murder your intercooled 10psi max blow thru setups.

throttle response is not an inherant problem with draw thru setups. And in fact has throttle response advantages over the blow thru system.

we never had any cold starting problems either - used to drive it to work everyday.

And if you are really keen, unlimited class ski boats commonly use draw thru air to air intercooled setups. Never seen one run blow thru...

You know it doesn't matter which setup you use you're gonna get the same peak horsepower (AVERAGE) but fuel injection is the best REGARDING FLEXIBILITY ( i mean if you want more fuel then bigger injectors its the same as bigger carby) for overall response intercooled or not. Intercooling is for decreasing the chance of detonation/pinging and therefore being able to advance the timing for more power. It doesn't matter what setup is used you will always have detonation unless you live in the cold weather. I like draw through setup the best for simplicity just awsome good throttle response really. I had a friend at work who had a Commodore 202 6 cyl with this setup with Weber Sidedraught,Rajay Turbo, water/methanol injection and was running 15 pounds awesome. Took a day to fit and drove it that night including spacer plate for the head, and roller rockers. I wouldn't be surprised if he pulled 13-14 seconds. If it was a blow through we'd be having headaches trying to keep the carby pressurised (whether in a box or a hole drilled to the throttle shaft) because also you can't run the mechanical fuel pump, the pressure in the carby would push the fuel back out of the carby kid you not. (lean out means pinging and holey pistons) there are other things too....fuel injection rules get a sidedraught throttle body injection that fits the twin sidedraught weber manifold. It would be the ultimate.
Blah Blah Blah I know anyways Have fun
quad throttle