XT660 to 700ccm conversion
 

Hello guys,

Shortly I'm doing a 660 to 700cc conversion. Here's so far what I've done.

1. bought a used XT660 head + cylinder + cam (oem)
2. bored and coated (nicasil+?) the cylinder to 700 ccm; done by http://www.powerseal.nl; they use a special process. See pics IMG_0869.jpg IMG_0870.jpg IMG_0874.jpg
IMG_0875.jpg
3. bought a suitable 103mm JE piston (thanks Kev for the advice!); See pics IMG_0876.jpg IMG_0877.jpg IMG_0878.jpg IMG_0880.jpg IMG_0881.jpg
4. tuned the cylinderhead + paint job (done by http://www.off-the-road.de; see pics before (head already sand blasted) - (IMG_0940.jpg IMG_0944.jpg IMG_0945.jpg IMG_0946.jpg IMG_0947.jpg IMG_0948.jpg IMG_0949.jpg) and after head tune job and coating job (IMG_1198.jpg IMG_1199.jpg IMG_1201.jpg IMG_1202.jpg IMG_1203.jpg).

Next steps:
- coating the cylinder to black
- still waiting for the OTR cam; will arrive shortly.
- remove the engine

Will keep you informed!

Greetings from Holland,

Marcel (marjani)

another Fran-kenstein motor, well done, I feel like an organ donor

Hello Ladieeeeeeesssss :pjrflash_Q2CCBE: There's more organs where that came from!! ;)

:biggob:

oeps, forgot to mention CaptMoto for the used head+cylinder+cam.
Thank:icon_blackeye: you Fran!

what Hp will u get after that?

Well done that man, glad it's finally coming to the install.

I have my fingers crossed for you, +60HP for sure.:blob3: Can't wait to see the dyno results, as we have a few other 700 conversions going on behind the scenes so there will be a few compassions to compare.

Marjani , how much are the costs so far?
Want to do the same...

Remember Skorzeny if you are interested I have a spare engine minus the thorttle body (but you can use yours)

Thanks Capt,

Since my engine is somewhat older than most bikes (one of first of 2004) i am thinking of modifying it and in case of a brakedown use newer replacement parts. But don�t want to go as far as having a whole spare engine.
Or isnt that what you mean and am i not getting the point?:confused:

Yesterday I recieved the OTR cam. Nothing more to tell about this part, looks just the same as the oem cam.
I also started the Engine Removal; removed the exhaust pipes, drained the oil and coolant, side panels. Wanted to remove the fuel tank, but have to drain it first. Guess there still about 7 liters of fuel in there, so have to be carefull not to spill it around the garage (my wife will kill me, haha!). Lucky I don't smoke;)
Today I took the cylinder for a powder coating job. It's now 'paint it black' ;)

I'm very frustrating at the moment, because the weather forecast will be good the whole weekend and I can't drive my damn blue steel horse! But I have still got my good ole' Vespa and a baby Honda dominator to drive....no wheelies for me for the moment ;)

Guess I need some mental coaching here, because this is a hell of a job! Wish Kev was my neighbour...


Skorzeny: I will give you a full review of the prices asap.

Greetings from a sunny Holland,

Marcel

Looking forward to the results.

If you get stuck you know where to find me, I am always willing to help. :typing[1]: