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Hi guys, so normally a fuel pump wouldn't apply to a stock xs650, but the bike is turbo'd and needs a pressurized fuel system to support the pressurized intake air. I installed a solenoid style fuel pump that is external to the fuel tank. It has lasted about 400 miles worth of running and has...

Since there have been a couple of people who have built/are building turbo xs650's, thought it would be useful have one thread that has links to all the builds. Yamaha_chop's turbo and efi custom sportbike build: http://www.xs650.com/forum/showthread.php?t=229&highlight=sky+turbo Cowboy 3669's...

Hi all, To support the turbo build, I installed a fuel pump and an auxiliary oil pump. Both pull 3A with no load so that should increase once pumping load increases. The bike is an '82 XS650 (TCI ignition). Here's my dilemma: The stock alternator is inadequate to supply enough amperage to...

What valve springs have people had best luck with? Mikesxs performance Hoosracing Or 650central? I am planning on replacing the stock springs with a better set.

I need to shorten my throttle cable for mikuni vm's and a motion pro throttle assembly. Just curious if anyone has dared to use JB weld to make new cable ends? The throttle cable is a one into two cable from Mikes. I plan on shortening the cable at the one into two juction where the ends are...

Has anyone changed the ignition timing of the stock tci ignition units without having to move the location of the pickup coil on the stator?

I have been contemplating a turbo build for a while and here's my progress so far. The turbo is a Garrett T25 from a 2nd gen mitsubishi eclipse or eagle talon (same thing, both dsm). This will be a low boost engine (about 5-6psi max), currently higher cr than stock (9.4:1 due to a thinner...

I have for sale two sidecovers that have been sanded down to plastic. I was originally going to have them repainted with the rest of the tins but opted not to since it's a cafe build. They do have some small cracks near the mounting holes but nothing too serious. I'm asking $40 for the pair...

The car club that I am active in went to TriStates raceway this past weekend and I ran the old xs there. I have done the following to the engine: stock xs650 pistons and rings mild port n polish vm34's torque cones made from stock xs pipes 1 3/4" wrapped street pipes from hoosracing (end just...

So I drilled my front brake rotor on my '82 hoping to save some weight and in order to get the holes to overlap when the pad swept by, the hole diameter was increased to 3/8". Let's just say that the disc is much lighter now but the braking power compared to before is no-where at the same level...

Hi Everybody! The car club that I'm involved in at school here in Platteville Wisconsin is having their spring car and motorcycle cruise in this saturday at the Country Kitchen in Platteville. Entry is free and if you'd like your car, truck, or motorcycle judged, it's a $5 for judging. Again...

Hi everybody! The car club I'm involved in at school here in southwest wisconsin is holding it's spring car and motorcycle cruise in this saturday at the country kitchen in Platteville, WI. Cars, Trucks, and Motorcycles are welcome! I'll have my xs down there rain or shine. Again...

Alright, I made a 17 thou thick copper head gasket and used yamabond for a sealant between the jugs and engine cases to increase the engine's cr. I calculated how much the change in distance between the cam and crank would affect the cam timing and I didn't have the correct tools to degree in...

How much can be taken off the cylinder head safely (and not run into knock or have to run e85) to increase compression ratio? 0.03"? 0.05"? Would be running stock base gasket and head gasket (not mikes head gasket either it's thicker than stock!). Thanks!

Was wondering what's the best suggested gearing in the rear for the quarter mile. Does the stock 17/34 do pretty well with the stock displacement or would 36 in the rear do better?:shrug: Last fall the car club went to the drag strip and I went with the xs with the big bore kit, mikes 2 into...

Was wondering if anyone has made a low battery voltage indicator light setup for their xs's.

All of my xs650 parts are taking too much room in my basement.:shrug: XS performance air filter pods: SOLD '82 RR unit (should fit '80 up xs's or xs's with factory TCI ignition sys's): $25 http://i1112.photobucket.com/albums/k485/plattey/DSC01911.jpg Stock brake rotor: SOLD '82 clutch...

This may be a dumb question; how are the o-rings at the bottom of the stock cylinders held in place so that they don't potentially fall into the engine? Just curious....

Twas the night before Christmas and all through the county not a thing was sounding, not even a drunky! Then through the valley, there was a low growl, from a 454, candy red Chevelle. For this year, the reindeer took rest as Santa delivered toys, burning rubber and high test. I had just...

Ported and polished cylinder head. The valves have been lapped in and new valve seals have been installed. Porsche/VW style valve tappet adjusters (aka elephant feet valve tappet adjusters) have also been fitted into the rocker box. The elephant feet adjusters use a cushion of oil in the ball...