Join Date: Sep 2006
Location: Simpsonville, SC USA
I've messed around with turbos a bit on small car engines (in the 1L range). You could probably find one small enough to function on a VLX, but again, why?
You would have to, as a minimum:
Completely fabricate a custom intake and exhaust system
Provide an oil supply to the turbo (and you would have to solve the problem of consuming your small capacity of crankcase oil, since some does run out the exhaust thru the turbo bearings)
Rejet (okay, some people think if you change anything on the bike other than the tires or seat, you have to rejet, but in this case it's a must)
O-ring the heads so they can stand the higher combustion pressure (an intricate job for a machine shop)
And the biggie, you need camshafts with different lift and timing. And unless you're following in someone else's footsteps (in this case I suspect you're trailblazing) nobody can tell you just what numbers to use. Multiple trial and error attempts at multiple camshafts... smells like money to me. Plus you might have to brew up custom valve/stem assemblies to make it work.
And assuming you get this all to work and actually make horsepower, you're pretty soon to discover the mechanical limits of everything else on the bike, from the primary drive thru the clutch and chain and sprockets and tires and brakes and on and on.
Don't get me wrong, this kind of game is great fun, but it's expensive and frustrating and not going to get you much performance you can use.
Now here's an alternative: there's a doohickey called a "hypercharger," which is nothing more than a conversion of your air cleaner box to a ram air scoop with butterflies visible on the front that open when you twist the throttle. You could fab up something like that; it would be a fun project and might get you a bit of performance, but probably nothing you couldn't duplicate with standard aftermarket mods. But it would certainly be unique on a VLX!
Hope that helps.
2002 VLX Deluxe
Ride bell by Lisa AND Kara