Right then, I have a Honda FJS600 Silverwing scooter for nipping around on.

Looks ghastly, goes badly.

Now I happen to have an extra engine for the FJS and a turbokit of a GSXR1000 lying around gathering dust.

So I'm considering turbocharging the scoot!

Now it's a fuelinjected 600 cc 4-stroke 8-valve parralel twin with around 50 BHP and a 110 MPH topspeed.

I have everything needed to turbocharge it but the turbo I have here is way too big.

So, what tiny turbo is out there suited to my plan?

Possibly twinscroll as it's easy enough to have the two cillinders feeding the turbo seperatly?

Also, how much boost would you be prepared to give it without lowering the compression or changing the internals, keeping in mind I'm not after loads of power just a bit of much and some more power and torque!

Bore and stroke is 72 x 71.5 mm and compressionratio is 10.2:1

It would be brilliant if I could get it to let's say 75 BHP?

Oh, and just in case: I also have an extra transmission here in case the first one blows up LOL