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  #1  
Old 25-03-12, 10:39
Kev's Avatar
Kev Kev is offline
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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.


Raptot 700 +5mm Hotrod stroker crank

Raptot 700 +5mm Hotrod stroker crank

700 raptor stator & flywheel

XT660 starter gear left, Raptor 700 right.

XT660 starter gear right, Raptor 700 left.

XT660 Fly wheel left, Raptor 700 Fly wheel right.

XT660 Fly wheel left, Raptor 700 Fly wheel right.




Copper head gasket.

Raptor base gasket.

+1mm inlet valves

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.


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Mods that I have done to my XTX's

My 04 XTX
Stage 1 & 2 DNA filters / Kev fuel mod / snorkel mod / Drilled air box mod / Engine breather mod / Fork Spacer mod / 15w fork oil /
[
My 07 XTX
Raptor 700 cylinder 102mm / Modified Crank Case to take a 105mm Raptor Cylinder / 11:1 102mm JE Raptor piston / Stage 1 Raptor Hot Cam / Ported head / Colder Spark Plug / +2mm Throttle body / DNA stage 1 & 2 filters / Modified Air Box / Snorkel removed / Worry Brothers stage 2 filter cover / 6mm & 8mm Bolts Replaced with Titanium Bolts / Recovered seat in Black / O2 Eliminator /

My 09 XTX
59HP at the rear wheel / Stage 2 Raptor Hot Cam / DNA stage 3 Air Box / Carbon Can Exhausts / Modified Exhaust Link Pipes / PCIII With Custom Fuel Map / Wideband Commander O2 Data logger / LCD100 Dyno Jet display & fuel adjuster / 2500 OHM HT lead instead of a 10K OHM XT lead / Extra Coolant Cooler / Protaper Fat Bars / Tail Tidy With LED Tail Light / OKE Protection Knobs / LED indicators / AIS blocked / Modified rear sprocket rubbers / Rear Foot Pegs removed / 09 ECU With 02 Sensor Changed To A 06 ECU / Complete wiring harnes Changed from 09 to 04 / Home made LED resistor flasher / Hole drilled in the fuel tank filler neck to allow quicker filling / Modified Bar End Weights / Progressive front fork springs, 15W fork oil, forks lowered 25mm, used XTR rear links lowering the rear 20mm, rear spring one click stiffer / Changed front & rear guards from blue to black / 47T rear sprocket / Speedo Healer V4.0 / Kev throttle cam mod / Throttle grip mod / The new 2010 O2 sensor mod is out, works a treat, The new 2012 O2 Controller is out, PM me for details

Now ride a 2018 MT09SP ABS + TCS

My KTM 990 SMR Mod book. http://www.ktmsmt.com/viewtopic.php?f=13&t=4946


Last edited by Kev; 25-03-12 at 22:25.
  #2  
Old 25-03-12, 12:41
kris007 kris007 is offline
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Talking 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.

Last edited by kris007; 25-03-12 at 21:39.
  #3  
Old 25-03-12, 13:32
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CaptMoto CaptMoto is offline
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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.
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  #4  
Old 25-03-12, 22:28
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Kev Kev is offline
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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.
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Mods that I have done to my XTX's

My 04 XTX
Stage 1 & 2 DNA filters / Kev fuel mod / snorkel mod / Drilled air box mod / Engine breather mod / Fork Spacer mod / 15w fork oil /
[
My 07 XTX
Raptor 700 cylinder 102mm / Modified Crank Case to take a 105mm Raptor Cylinder / 11:1 102mm JE Raptor piston / Stage 1 Raptor Hot Cam / Ported head / Colder Spark Plug / +2mm Throttle body / DNA stage 1 & 2 filters / Modified Air Box / Snorkel removed / Worry Brothers stage 2 filter cover / 6mm & 8mm Bolts Replaced with Titanium Bolts / Recovered seat in Black / O2 Eliminator /

My 09 XTX
59HP at the rear wheel / Stage 2 Raptor Hot Cam / DNA stage 3 Air Box / Carbon Can Exhausts / Modified Exhaust Link Pipes / PCIII With Custom Fuel Map / Wideband Commander O2 Data logger / LCD100 Dyno Jet display & fuel adjuster / 2500 OHM HT lead instead of a 10K OHM XT lead / Extra Coolant Cooler / Protaper Fat Bars / Tail Tidy With LED Tail Light / OKE Protection Knobs / LED indicators / AIS blocked / Modified rear sprocket rubbers / Rear Foot Pegs removed / 09 ECU With 02 Sensor Changed To A 06 ECU / Complete wiring harnes Changed from 09 to 04 / Home made LED resistor flasher / Hole drilled in the fuel tank filler neck to allow quicker filling / Modified Bar End Weights / Progressive front fork springs, 15W fork oil, forks lowered 25mm, used XTR rear links lowering the rear 20mm, rear spring one click stiffer / Changed front & rear guards from blue to black / 47T rear sprocket / Speedo Healer V4.0 / Kev throttle cam mod / Throttle grip mod / The new 2010 O2 sensor mod is out, works a treat, The new 2012 O2 Controller is out, PM me for details

Now ride a 2018 MT09SP ABS + TCS

My KTM 990 SMR Mod book. http://www.ktmsmt.com/viewtopic.php?f=13&t=4946


Last edited by Kev; 19-04-12 at 12:01.
  #5  
Old 19-04-12, 11:50
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Kev Kev is offline
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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.

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Click here to join the XT Supporter's scheme

Mods that I have done to my XTX's

My 04 XTX
Stage 1 & 2 DNA filters / Kev fuel mod / snorkel mod / Drilled air box mod / Engine breather mod / Fork Spacer mod / 15w fork oil /
[
My 07 XTX
Raptor 700 cylinder 102mm / Modified Crank Case to take a 105mm Raptor Cylinder / 11:1 102mm JE Raptor piston / Stage 1 Raptor Hot Cam / Ported head / Colder Spark Plug / +2mm Throttle body / DNA stage 1 & 2 filters / Modified Air Box / Snorkel removed / Worry Brothers stage 2 filter cover / 6mm & 8mm Bolts Replaced with Titanium Bolts / Recovered seat in Black / O2 Eliminator /

My 09 XTX
59HP at the rear wheel / Stage 2 Raptor Hot Cam / DNA stage 3 Air Box / Carbon Can Exhausts / Modified Exhaust Link Pipes / PCIII With Custom Fuel Map / Wideband Commander O2 Data logger / LCD100 Dyno Jet display & fuel adjuster / 2500 OHM HT lead instead of a 10K OHM XT lead / Extra Coolant Cooler / Protaper Fat Bars / Tail Tidy With LED Tail Light / OKE Protection Knobs / LED indicators / AIS blocked / Modified rear sprocket rubbers / Rear Foot Pegs removed / 09 ECU With 02 Sensor Changed To A 06 ECU / Complete wiring harnes Changed from 09 to 04 / Home made LED resistor flasher / Hole drilled in the fuel tank filler neck to allow quicker filling / Modified Bar End Weights / Progressive front fork springs, 15W fork oil, forks lowered 25mm, used XTR rear links lowering the rear 20mm, rear spring one click stiffer / Changed front & rear guards from blue to black / 47T rear sprocket / Speedo Healer V4.0 / Kev throttle cam mod / Throttle grip mod / The new 2010 O2 sensor mod is out, works a treat, The new 2012 O2 Controller is out, PM me for details

Now ride a 2018 MT09SP ABS + TCS

My KTM 990 SMR Mod book. http://www.ktmsmt.com/viewtopic.php?f=13&t=4946


Last edited by Kev; 19-04-12 at 13:05.
  #6  
Old 19-04-12, 14:36
feck feck is offline
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awesome work chaps, that torque curve is something else... what gearing is he running out of interest?
  #7  
Old 19-04-12, 16:30
waynovetten waynovetten is offline
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Now thats a lot of HP,blimey!!!
  #8  
Old 19-04-12, 17:02
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J_maker J_maker is offline
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Absolutely amazing job!!!
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My Mods
Kev's Fork Spacers - DNA stage 1 filter - Kev's O2 eliminator - Denso Iridium Spark Plug - AFAM XBAR - HEL brake line - Pirelli Diablo Rosso II Tires - Acerbis handguards

XTX - Better than SEX





  #9  
Old 19-04-12, 21:12
kris007 kris007 is offline
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feck, running STD gearing.
  #10  
Old 25-04-12, 08:27
dl700 dl700 is offline
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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
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