> Is the car going to be sluggish off turbo because of the setup?
Not if you leave the engine stock and just add a turbo. It'll have the same power as before, but when the turbo comes on, it will have even more.
> What revs would you expect turbo to hit?
Same as before. You are limited by the cam and most especially valve springs.
> roughly what sort of gain would a stock motor get in terms of power?
40%
> would any modifications to the motor make it better suited for turbo application?
Yep, same as any other build up - bigger valves, ports, carbs (freer breathing) ... with the big exception that lowering the compression ratio will help. Then you can use more turbo boost on the same octane fuel. On the other hand, lowering the compression ratio will make the engine have less torque off-idle, before the turbo spools up. Depends on what you want -- max hp, or just a boost to your stock engine.
There is a lot to this subject, check out some of the turbocharging Web sites or books at the library.
Yes, I'd top up with this. If someone know why this shouldn't be done, speak up.
Oil manufacturers warn about mixing different types of oils/greases together, but slightly different weights is not a big deal. It's like mixing engine oil 30-weight with 10w/40 oil. Only less critical since the gears aren't being subjected to the same temperature and combustion by-products like engine oil.
I've seen a lot of gears go 150,000+ miles without the gear oil (90 weight) ever haven been changed. I can't think of one that failed due to lack of change. They usually fail due to leaking, running out of oil (or breaking due to doughnuts!).
The newer cars use light oil for fuel-economy reasons. These probably should be changed regularly.
Because of the size of the turbo im going to use it will spool up fairly quickly, its fairly small But my old set up would rev to 5400 and then loose fuel pressure, it needed an electric fuel pump with a rising rate regulator Even so it would still go well enough to beat a 6cyl VL comm on lpg(the VL on lpg)
Im interested in having a go at turboing a spare motor i have but am curious about the charachteristics the motor will have with turbo on cause i dont know a lot of technical stuff when it comes to turbo performance and the pro's and con's of a blow through setup.
Is the car going to be sluggish off turbo because of the setup? What revs would you expect turbo to hit? roughly what sort of gain would a stock motor get in terms of power? would any modifications to the motor make it better suited for turbo application? what about intercoolers and blow off valves, would they help here or is this not a serious enough setup to worry? Anything else?
sorry to go off track but nizmo wernt you debating whether rally cars are allowed to run a-14's with me, because here you tell us of an existing 1200 rally car competing with an a-14, doesnt that mean it must be allowed? you seemed to think it wasnt
not that ive done any research since weve talked about it yet
I like the 4-port injection but it makes for a cluttered up engine compartment. I want a toy, not a monstrocity, and I want it to look good and run good also. The port injections are so cluttered that the motor is half hidden.
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if any things breaks... we will be a bit far to fix it. 
Mareo 