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	Rotax motor question - What's this?? Will it work for snowmobile? started by mxz380@nu
	May 9th 2008 at 9:45 AM Post #1
	mxz380@nu Junior Member 177 Posts Group: Members Member Since: January 15th 2007 Location: Arviat, Nunavut, Canada
	http://cgi.ebay.ca/rotax-503-prov-8-lowerend-complete_W0QQitemZ160237890678QQihZ006QQcategoryZ26437QQssPageNameZWDVWQQrdZ1QQcmdZViewItem Will 440 fan cylinders fit on a 503 crank? Rating: 0 Quick Edit Edit Topic
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	May 9th 2008 at 7:28 PM Post #2
	classicfanatic cant beleave hes got a girl this hot! 302 Posts Group: Members Member Since: December 15th 2007 Location: windham, maine, USA Current Sled: yamaha phazer Miles Last Season: 100? Miles This Season: about 100
	as long as the stroke is the same and the bolt patern is the same as i think they are it should bolt right together! any one looking for sled parts check out http://www.smartrecparts.com they have about every thing from new to old! Rating: 0 Quick Edit Full Edit
	May 10th 2008 at 10:52 AM  [ Modified May 10th 2008 at 10:53 AM ] Post #3
	shortstop20 Coming to a mountain near you 3289 Posts Group: Members Member Since: August 9th 2004 Location: Stickney, SD, USA Current Sled: 2003 Pro-X 800 144" Miles Last Season: 600 Miles This Season: 160
	The bore needs to be the same or there has to be enough material to make the bore the same. The porting on the cylinders is most likely different, might make it a little harder to tune or find the powerband. 2003 Pro-X 800 144": Boss Seat, SLP pipe/can, SLP intake/flowrites, Tracks USA tunnel/rail extensions, 144"x15"x2" Challenger track, 6" billet riser, PERC, torque/push arms, motor plate Rating: 0 Quick Edit Full Edit
	May 11th 2008 at 10:48 AM Post #4
	OldCatRider Advanced Member 1602 Posts Group: Members Member Since: August 27th 2006 Location: Groton, NY, USA
	No. 440 cylinders will not work on the 503. '93 wildcat 700efi w/Comet Pro-4 clutch '80 pantera 500 FC w/ Comet 108 '90 Wildcat, project in progress Sec. Dryden Lodge #472 F.&A.M. Trail Boss: Dryden to Groton area www.dcdrifters.net If I get to doing any better I am going to have to hire someone to help me celebrate. Rating: 0 Quick Edit Full Edit
	May 12th 2008 at 10:31 AM Post #5
	SnoKing Junior Member 137 Posts Group: Members Member Since: May 19th 2005 Location: Pence, WI, USA Current Sled: 08 600 CFI/LX ,06 900 Fus Miles Last Season: 1545 Miles This Season: 1518 mi
	I have a comlete 98 500 MXZ wrecked for sale or will part out engine etc Rating: 0 Quick Edit Full Edit
	May 12th 2008 at 11:07 AM Post #6
	mxz380@nu Junior Member 177 Posts Group: Members Member Since: January 15th 2007 Location: Arviat, Nunavut, Canada
	My 440 in question is a fan-cooled... thanks for the offer. Rating: 0 Quick Edit Full Edit
	May 13th 2008 at 9:48 AM  [ Modified May 13th 2008 at 9:48 AM ] Post #7
	SnoKing Junior Member 137 Posts Group: Members Member Since: May 19th 2005 Location: Pence, WI, USA Current Sled: 08 600 CFI/LX ,06 900 Fus Miles Last Season: 1545 Miles This Season: 1518 mi
	Quote originally posted by mxz380@nu My 440 in question is a fan-cooled... thanks for the offer. I didn't notice where you were located until after I posted. Probably more than a 2 hour drive to here. Ha, Ha, Rating: 0 Quick Edit Full Edit