Originally Posted by
nudemetalz
Yeah, that's what they said when the first 4-stroke MotoGP bikes cames along and said bye-bye to the NSR's.........
ye what was it 1000cc 4stroke and only 500cc 2 stroke 
no wonder the 2strokes lost out they had to make twice the HP
and be reliable 
saying that it's all come a long way since then
things like traction controll and ABS brakes
also for all the 2strokers out there a cut and past
The first thing to note is that in order to change your bike into a four stroke, you need to remove the spark plugs. You will need to visit Repco, and buy a left hand direction spark plug remover. Simply replace the spark plugs with 4 stroke spark plugs. You will need a right hand direction spark plug inserter. I suggest printing out this advice and taking it with you, the car guys can be a little slow to understand.
You will also need to turn the direction of the motor around, 180 degrees. This is due to the power on the 4 stroke engine running the opposite direction as mentioned before. Be careful, I know a guy who forgot this, and he ended up starting his bike, opening the throttle, and then flying over the handlebars as he couldn't hold the weight of his ape, and his own body weight as the bike rapidly moved backwards.
Now, in order to turn the motor 180 degrees, you will need to buy the spark plugs mentioned above, but also a new back wheel. Make sure it is made in the correct part of the world. It gets really confusing, and if you get the wheel wrong, the bike will either be really fast (wheel rotating in the same direction as the motor) or it won't move at all (wheel cancels out the motor).
The world of motorcycling can be very confusing with lots of poor advice, lucky you came to the right place first. WhiteTrash has a very high score beside his name, that's because he is all wise, and all knowing.
Finally, you will need a set of decent ape hanger handle bars as MsKaBC suggests, sportsbikes can be hard to handle, so you need to assure yourself that you've got all the right parts. I'd suggest going to see Tony at Haldane's, that's in Penrose, Auckland, and explain you need a set of ape hangers for your bike, and tell him you need the sort with a long weight.
It might take you some time for him to find the part number, but I assure you, they will be worth it. Valentino Rossi has a pair, look how fast he is.
Kind regards, MadBikeBoy.
and more
Oh, one more thing, I was just talking with someone who went through the process - your bike is sometimes referred to as a rice burner. This is not accurate, your bike runs on normal petrol, and not on rice squeezings. With some additives, you might consider using rice squeezings instead. You will need to buy a loose nut adjuster (about $50), and a big vat, you can find them on trademe - they're used for distilling whisky. As luck would have it, WhiteTrash has one of these, actually, he has several of these - he uses them for his moonshine distillery.
So, once you have the vat, and the loose nut adjuster, you need to boil about 5 kg of long grain rice (don't use short grain rice, it's too volitile). You will need to boil the rice for about 2-3 days, and all the vapour gets collected in the pipework, (just like whisky distilling, and this is how petrol is distilled), and then you let that sit for about a week. WhiteTrash, you're the expert here, help me out if I've got any of the detail wrong.
So, once you filter that, you're reading to put the rice squeezings in your bike. You will need to suck the petrol through, I'd just attach a hose to the exhaust port, you'll be able to tell when you start to taste the liquid come through.
Then, once you're good to go, just hit the starter button. Some people experience problems at first, but once your rice burner is actually running on rice, it will sound distinctly different. If you've ever heard the wonderful sound of a Honda VTR twin, that's what your bike will sound like, and it's very impressive.
Regards, MBB
"Instructions are just the manufacturers opinion on how to install it" Tim Taylor of "Tool Time"
“Saying what we think gives us a wider conversational range than saying what we know.” - Cullen Hightower
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just so those old f5 bikes can still be used 
(that way you can say that 4 strokes are faster and prove it at the same time)
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