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Old 16-09-08, 21:35
marjani marjani is offline
Expert XT-Moto
 
Join Date: Apr 2007
Location: holland
Posts: 140
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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)
Attached Images
File Type: jpg IMG_0869.jpg (60.8 KB, 176 views)
File Type: jpg IMG_0870.jpg (43.9 KB, 108 views)
File Type: jpg IMG_0874.jpg (60.2 KB, 97 views)
File Type: jpg IMG_0875.jpg (50.6 KB, 80 views)
File Type: jpg IMG_0876.jpg (87.9 KB, 125 views)
File Type: jpg IMG_0877.jpg (83.6 KB, 92 views)
File Type: jpg IMG_0878.jpg (81.3 KB, 99 views)
File Type: jpg IMG_0880.jpg (87.5 KB, 95 views)
File Type: jpg IMG_0881.jpg (66.8 KB, 110 views)
File Type: jpg IMG_0940.jpg (75.8 KB, 113 views)
File Type: jpg IMG_0944.jpg (55.3 KB, 86 views)
File Type: jpg IMG_0945.jpg (57.1 KB, 89 views)
File Type: jpg IMG_0946.jpg (65.6 KB, 83 views)
File Type: jpg IMG_0947.jpg (55.0 KB, 103 views)
File Type: jpg IMG_0948.jpg (61.0 KB, 99 views)
File Type: jpg IMG_0949.jpg (52.2 KB, 93 views)
File Type: jpg IMG_1198.jpg (46.1 KB, 170 views)
File Type: jpg IMG_1199.jpg (68.9 KB, 132 views)
File Type: jpg IMG_1201.jpg (81.2 KB, 146 views)
File Type: jpg IMG_1202.jpg (54.6 KB, 129 views)
File Type: jpg IMG_1203.jpg (79.8 KB, 139 views)

Last edited by marjani; 03-01-09 at 12:51.