motor help started by indy500efi
	October 29th 2009 at 1:02 PM Post #1
	indy500efi Junior Member 404 Posts Group: Members Member Since: July 13th 2006 Location: tipton, ia, USA Current Sled: 2005 f7 sno pro 2008-2009 Miles: 2340
	so i just rebuilt the motor in my back up sle (97 zr 580 efi. only had to due one piston and rings and new cyliner. so i get it all put back togather new gaskets carboots ect. and i have ran motor on and off bout maby 30 total mins and i show i only have 75 lbs of compression. any ideas? Rating: 0 Quick Edit Edit Topic

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	October 29th 2009 at 1:39 PM Post #2
	James007 Disturbing the peace since 1991. 2090 Posts Group: Members Member Since: January 12th 2007 Location: kirkland lake, ontario, Canada Current Sled: 2009 MXZ X 600Etec 2008-2009 Miles: 1100
	Im not positive but im told once you break a motor in it gets more compression. 2009 MXZ X 600 ETEC www.youtube.com/sjames117 Rating: 0 Quick Edit Full Edit

	October 29th 2009 at 1:55 PM Post #3
	stormrider62033 wally 4729 Posts Group: Members Member Since: December 25th 2004 Location: Gillespie, IL, USA Current Sled: 99xcr 800 2008-2009 Miles: 500
	what shape were the bores in ??? mid Il alway's waiting for snow,moving north(way north)2001 thundercat 99xcr 800 97SPX ULTRA 96 zrt 600&800,92 doo plusX 92 v max 4 750 Rating: 0 Quick Edit Full Edit

	October 29th 2009 at 1:59 PM Post #4
	indy500efi Junior Member 404 Posts Group: Members Member Since: July 13th 2006 Location: tipton, ia, USA Current Sled: 2005 f7 sno pro 2008-2009 Miles: 2340
	good/new Rating: 0 Quick Edit Full Edit

	October 29th 2009 at 2:44 PM Post #5
	2L8ULuz Junior Member 234 Posts Group: Members Member Since: June 21st 2005 Location: Chicago, IL, USA Current Sled: 07 600cfi / 95 xlt
	when you run the motor let it heat up to operating temps. Don't run it for a few then shut it off, then start it back up. On any rebuild I like to run it a hand full of times to operating temps, let it run (but do not let it overheat), shut it down letting it cool down. After I do that I'll start giving it some gas. I don't give the engine any gas until the motor at least hits a 100+ deg. There is some run and break in time needed. That does seem low, but I have never compression checked anything after 30min of running. When you are checking the compression, you are holding it WOT when you are pulling? Rating: 0 Quick Edit Full Edit

	October 29th 2009 at 2:51 PM Post #6
	indy500efi Junior Member 404 Posts Group: Members Member Since: July 13th 2006 Location: tipton, ia, USA Current Sled: 2005 f7 sno pro 2008-2009 Miles: 2340
	just when i am pulling it and i have let the sled more up and then checked it again to Rating: 0 Quick Edit Full Edit

	October 29th 2009 at 7:41 PM Post #7
	kingofkings argueing with idiots kingofkings . Updated Friday at 6:33 AM 716 Posts Group: Members Member Since: August 19th 2008 Location: Little Falls, MN, USA Current Sled: 1998 ZL 500 2008-2009 Miles: 700+
	Perhaps a gasket isn't on right. Hope it's just part of the break in process -To ride or not to ride, what a stupid question! -You should never judge a guy until you have walked a mile in his shoes, then you are a mile away and have his shoes -Ice, snow, or grass, I'll still kick your ass. -"And when he gets to Heaven, to St. Peter he will tell, one more soldier reporting Sir I have served my time in Hell" Rating: 0 Quick Edit Full Edit