ive turbo'd my gsxr250rr now the clutch has gone.

[koba]

Apparently the GSXR250RR (With the 4 carbs instead of the two dual throat ones like most GSXR250s) is one seriously fast little machine. Perhaps the fastest 250 4 ever..?

There is one at TSS here in Wellington at the moment, and it looks very cool.

Oh yeah.. PICS of your bike good sir would be awesome, I'd love to see what you have done.

Nice techy alloy frame too, Ive been perving at that one.
My brother was keen on on at some point. maybe I can talk him into it...

[onearmedbandit]

hows that when thy rev out to 18,000rpm and my thing is only 8,000rpm... I always figgered it was compresion that slows the revs down?

I thought it was the valve train mostly, ie a heavier valve train will reduce the rev ceiling. I could however be completely wrong.

[homer]

i know everyone wants more power ,but do you think that a bikes actually made for the power it produces ......with in reason.
im not suggesting that bikes cant be worked
but as i know you used to be able to get a 800cc kit for a xt 400 yammy
but then the gearbox used to eat its self .

So its like go figure
apparently the bandit 1200 cant have a lot more hp added either or it eats the clutch.

[Ixion]

hows that when thy rev out to 18,000rpm and my thing is only 8,000rpm... I always figgered it was compresion that slows the revs down?

Compression won't affect revs. RPM is limited either by (a) when the bottom end blows apart; (b) the valves won't follow the cams any more - can't open and close quickly enough - hence why mutli valve heads USUALLY rev higher than two valve heads (c) can't get enough fuel mix through the inlet tract to rev any higher (d) the electrics can't produce sparks quickly enough. Two strokes are a bit different. As always. We're specthul

[skidMark]

You're problem is the turbo, i tell ya what i will take it off ya hands for free and you can make ur bike back to stock.

Hey, it was worth a shot right?

[skidMark]

I thought it was the valve train mostly, ie a heavier valve train will reduce the rev ceiling. I could however be completely wrong.

smaller pistons...less surface area thus less overall friction

thus it can rev faster.

[FilthyLuka]

smaller pistons...less surface area thus less overall friction

thus it can rev faster.

So why do over-squared pistons rev faster? wide diameter, short stroke. Large diameter = large amount of piston in contact with bore = large amount of friction = slower revving by your logic.

Formula 1 cars are oversquared to balls and they rev like a sonofabitch

[snot]

Less stroke == less piston speed... too fast and the pistons will melt.

At least someone is on the money..

[MidnightMike]

Heh, so now it might just go faster than all the other 250s (bar a hyosung)

Bar a Hyosung?? 0.0

Apparently the GSXR250RR (With the 4 carbs instead of the two dual throat ones like most GSXR250s) is one seriously fast little machine. Perhaps the fastest 250 4 ever..?

They are really quick little things.

I used to ride with someone who had one, accelerated damn quick and sounded wicked when doing so (factory exhaust)

Too bad he had so much problems with it.

[deanohit]

Suzuki GSXR250 is chain driven cam in the centre.
Arse to change the chain!

Dunno anthing about this one but "rapid" magazine had a small write up on a Yamaha zeal that had a tiny turbo of a 600cc Kei car on it.
Wastegate was welded closed and turbo let to run to full natural boost which was 18psi!
Boxed carbs with auxillary injectors and intercooled with fuel running back from the injector rails being routed around the carb box.
Had upgraded gernerator of an FZR600 to run the injectors, fuel pump and the clutch came from the FZR600 aswell.

The work was done by s&r pro in Australia.

33 hp at the rear upped to 105 or so?

12.7 standing quarter!

I guess it may be obvious I love the turbo 250 idea...


PICS!

Here we go:

[Eddieb]

Apparently the GSXR250RR (With the 4 carbs instead of the two dual throat ones like most GSXR250s) is one seriously fast little machine. Perhaps the fastest 250 4 ever..?

There is one at TSS here in Wellington at the moment, and it looks very cool.

I owned one for 2 years back in the day and loved it, 17,000 rpm for 50,000km's all over NZ and not an issue, including Hamilton to the Idaburn dam in the South Island for the Brass Monkey. At Mainfeld I could pull about 6 bike lengths over a standard gsxr250 down the front straight and I only sold it to fund a ticket overseas.

Check out how the clutch compares to an early RGV or M,N model designation gsxr 400, it may sound odd but there are a lot of shared components between those and early RGV's & 400's running gear wise so who knows. Brake calipers, forks, wheels, instruments and all sorts could be swapped between those models.

[oldhoon01]

back again will post pics as soon as i finish the repaint and get my camera back just for all the doubters out there. mines not quite running 18 psi but still waiting for headgasket and rings to turn up so we will see after that hope to be able to get it to next bike rally comin up down here just look out for the turbo'd honda 400 custom lux ill be next to it.

[dangerous]

look out for the turbo'd honda 400 custom lux ill be next to it.

hahahaha... this one ya mean?

[oldhoon01]

haha dats the one top left of the photo bald chubby guy no shirt on thats ross my boss.

[Coyote]

Could you tell us about the actual turbo build? What was the turbo off? Did it yourself or got some fabricators to sort it for you? How much did everything cost?

Most people with 250's talk about it but hardly anyone actually does it