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how do i fit a turbo to a honda rvf 400 motorcycle? Answered

i am wondering how to fit a turbo to me honda rvf 400 motorcycle starting from scratch, money is no object, i just want it done!! even the smallest of help will b apreciated.


you have V4 engine. it going to be real hard to fit a turbo to that thing. GOOD LUCK. i would not bother its not worth the effort. WHAT YOU COULD DO IS GO GET SOME AVIATION FUEL FROM YOUR local areodromes and juice up the bike. proformance you WILL get. OR stick 3 or 4 mothballs in the fuel tank fill up and your BIKE WILL GO LIKE A BAT OUT OF HELL. (TRUST me)

The engine has been designed to work without turbocharging, if you did fit one it would seriously mess with the way it works. You're unlikely to improve performance and you could even break it. I believe that drag-bikes use an air-ram feed rather than turbos? (and they don't have much in the way of exhausts either) L

so if you did fit a turbo to a rvf 400 it wouldnt make a diffrence in any way performance wise ?

Yeah it would probably make it worse, maybe break it in some way. L

Yep, for bikes that don't originally have a turbo-charger as an oftion, a ram-air set up is far more realistic. Last year my oldest son tried to hook a "home-brewed" supercharger to a 5 hp go-cart engine, and it just isn't practical.

I did that when I was younger. It worked, but I had the compressor portion between the carb and the intake. Ran like the dickens (for about 15 minutes). Only after that did I learn about cylinder pressures and pre-ignition. An engine normally designed for 4k RPM was running at about 7700-9000 RPM. Poor little connecting rod...

He was considering using pre-compressed air from a tank, but then the gocart kinda go neglected once he got a real motorcycle. I think he's afraid to really experiment much with his main source of transport.

Sounds interesting - what was he attempting to fit to the engine? L

He tried a few different things, all with a belt and pulleys, geared to push more air than normal into the intake. I think he tried an air-compressor pump, a washing machine pump, and a small two stroke engine (without fuel system or ignition). If I remember correctly, he got the washing machine pump to work (higher RPMs than before) a little.

Would have made a good Instructable if it had worked. The type of blower you need just isn't easy to find, but credit to the lad for trying. L

Yeah, I pretty well knew it wouldn't work, but I was happy to see him go through the process. (And there was always the possibility he'd accidentally come up with something no-one else had considered.)

Well this is how you learn isn't it?


If you really want to do this: Look at the bike and frame and find somewhere you can mount the turbo, bearing in mind it may get up to a dull-red heat, and you want to keep yourself clear of it. You'll need some custom mountings to bolt it onto the engine. You'll also need custom-built inlet and exhaust manifolds and a custom exhaust. Your best practical option is probably to have them welded from stainless steel. And you'll also need an oil pump running lubricant through the turbo bearing, probably best to build one rather than trying to tap into your engine. I don't know how your carb's will cope but you may need to replace them. L