778cc XTX, Kris 007 Stroker crank comversion
 

778CC, well it has been done with full instructions & proof this motor dose exist. Well done Kris for taking on the project you have done well mate, it was mod I dreamed of 2 years ago & now it is a reality.

Quite a big project.

The parts that were needed to build this monster XT motor.

XT660 casings bored out to take the Raptor 105.5mm cylinder
Raptor 700 5050 cam. ground rocker arm to clear the cam
Raptor 700 cam gear & de compressor parts
+3mm Throttle Body & 565cc fuel injector (not yet when we get to steve’s Dyno to see if it works)
+1mm inlet valves
Ported head
+4mm headers
Raptor 700 cosmic 105.5mm gasket kit
Raptor 700 105.5mm barrel
Raptor 700 105.5mm 12.5:1 cp piston machined flat top
Rraptor 700 +5mm stroker crankshaft made by Hotcranks USA
Raptor 700 cam chain (same as XT
Raptor 700 fly wheel, nut & washer
Raptor 700 starter gear & thrust washer gear has been modified ( I had to cut the centre out of the XT starter gear and weld it onto the Raptor starter gear to get the idler gear to line up properly.
Raptor 700 stator, pulse pickup & harness XT stator plug
16mm spacer behind the stator, as the Raptor crank is shorter that the XT's
2 X 11mm off set spacer’s behind the pulse pick up to match the Raptor shorter crant & smaller diameter, the Raptor rotor is 2mm smaller than the XT660,s
Modified XT clutch with extra clutch pate + 10% heaver clutch springs
PC 3 & wide band commander
DNA stage 3 air box
Leovince x3 pipes

Today the motor came to life. Dyno results to come very soon after the bike has run in. I hope to be with Kris to see the gains & ride this beast first hand.

http://i201.photobucket.com/albums/a...x/P1010631.jpg
Raptot 700 +5mm Hotrod stroker crank
http://i201.photobucket.com/albums/a...x/P1010633.jpg
Raptot 700 +5mm Hotrod stroker crank
http://i201.photobucket.com/albums/a...x/P1010634.jpg
700 raptor stator & flywheel
http://i201.photobucket.com/albums/a...x/P1010635.jpg
XT660 starter gear left, Raptor 700 right.
http://i201.photobucket.com/albums/a...x/P1010665.jpg
XT660 starter gear right, Raptor 700 left.
http://i201.photobucket.com/albums/a...x/P1010664.jpg
XT660 Fly wheel left, Raptor 700 Fly wheel right.
http://i201.photobucket.com/albums/a...x/P1010661.jpg
XT660 Fly wheel left, Raptor 700 Fly wheel right.
http://i201.photobucket.com/albums/a...x/P1010662.jpg
http://i201.photobucket.com/albums/a...x/P1010658.jpg
http://i201.photobucket.com/albums/a...x/P1010629.jpg
http://i201.photobucket.com/albums/a...x/P1010630.jpg
Copper head gasket.
http://i201.photobucket.com/albums/a...x/P1010639.jpg
Raptor base gasket.
http://i201.photobucket.com/albums/a...x/P1010638.jpg
+1mm inlet valves
http://i201.photobucket.com/albums/a...x/P1010620.jpg
16mm longer stator coils holder bracket to hold the Raptor stator coils, + the 2 X 11mm longet brackets offset by 2mm to suit the smaller Raptor flywheeel.
http://i201.photobucket.com/albums/a...x/P1010684.jpg
http://i201.photobucket.com/albums/a...x/P1010686.jpg
http://i201.photobucket.com/albums/a...x/P1010687.jpg

778cc Xt
 

Well another big job complete and running, it was a bit of a worry for a while not really sure if it was going to work out but it did. I have had a lot of help along the way from Kev for his advice & posting my mod's, Fran & Daniel (DL700) HDD Motorsports/High Desert Dyno USA, Who I highly recomend for anything raptor 700. I could not have done this without your help, Thank's guys. I will head to the dyno as soon as its run in.

Well done to you Kris and to Kev for his assistance. this is certainly a milestone of a project, I look forward to the Dyno results.

This mod is a credit to Kris he is the one who put the cash up & did all the hard work, I think Kris had a few sleepless nights at one stage as it did not look like it was going to work.

See you at the Dyno Kris when she is run in.

I met Kris at the Dyno today & he got 76.68HP & a wopping 62.39 FT/LBS of Torque from his stroker crank conversion, what a great result Kris well done mate, this would be the fastest XT ever built on record.

http://i201.photobucket.com/albums/a...tx/XT784cc.jpg

awesome work chaps, that torque curve is something else... what gearing is he running out of interest?

Now thats a lot of HP,blimey!!!

Absolutely amazing job!!! :wave:

feck, running STD gearing.

Good Job on the motor !!!!! very strong power,,, that is a large job with a lot of unknow problems, but good to hear u got it worked out and im glad to be of help


Send me the OEM crank and ill get it made 8 mm stroke,,,, cost will be around $1250 + shipping... but drop in conversion with proper piston used