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Just a couple questions
- 600 tripple - work to be done
started by XLT96rider
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April 25th 2009 at 3:48 PM
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XLT96rider
Other sports play once a week, but this sport is with us every day.
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942 Posts 
Group: Members
Member Since: January 7th 2009
Location: Wausau, Wisconsin, USA
Current Sled: 1996 Polaris XLT Special
2008-2009 Miles: 1000+
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As some of you may have seen, I was having a problem with a "ticking" sound from the motor last fall..
http://www.snowmobilefanatics.com/forum/...splay.aspx
Quote bigdaddyhemi Hey just my 2 cents. I had the same problem a couple of years ago. Bought a 600 with new pistons & rings installed and it ran like a champ other than a knock and a tick. I ran 600 miles and I couldn't take the noise any more. I tore it apart and could not see anything wrong. I checked for play in the wrist pin on the down stroke. Taped the piston with a soft mallet and found the piston dropped around a millimeter. I pulled the wrist pins and replaced the bearings. Put it back together and fired it up. No more noise and the guy that bought the sled is still running strong.
That's what it turned out to be... got it right!! 
There was .001 play in them!! Didn't think that would make so much noise!!!
Now the questions.....since it's apart:
1.Shaving the heads - I could go .010-015...is it worth doing this?...I can get it done for free. I've heard if you shave heads, you lose rpm's. Any truth to this?
2.Polishing the ports (all of them). What would I really gain by doing this? I can also get this done for practically nothing. Noticeable difference or not? I've ported the heads on car motors and noticed a difference, would these be the same?
3.Pattern on pistons....How do my pistons look? Just put them in last fall and have about 1100-1200 miles on them.
Anything else I can do right now to gain a little power? (not looking for alot, just a little more than stock).
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April 26th 2009 at 11:22 AM
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old_school
Junior Member
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145 Posts 
Group: Members
Member Since: December 25th 2008
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Picture is kind of dark but it looks like the PTO side cylinder was running rich.
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April 26th 2009 at 12:08 PM
[ Modified April 26th 2009 at 12:09 PM
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crazyJake
Advanced Member
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1005 Posts 
Group: Members
Member Since: April 19th 2006
Location: Rothschild, Wisconsin, USA
Current Sled: 2004 ski-doo mxz rev 600
2008-2009 Miles: 400
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well first of all if you want my 2 dollars i would shave the head couple thousands no more than .10 and smooth out your ports dont go crazy and clean your carbs and go down one jet size
and if you want to keep up with me and kevin u could just put a ski-doo motor in there lol
current sled
2004 ski doo rev mxz x pag 600ho
1977 arctic cat pantera
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April 26th 2009 at 12:53 PM
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dtmmil
Senior Member
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3182 Posts 
Group: Members
Member Since: January 27th 2007
Location: Hawley, MN, USA
Current Sled: 99 xc700
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I wouldn't say rich on the pto side, if it was rich it should be cleaner from the fuel washing the piston top.
Clutched
Jetted, boyesen reed petals, boost bottle, 98xc carbs slides, 1371 needles, gutted air box
Homeade 7 1/2" riser
Homeade suspension drop brackets
shortened and blackened windshield
powermadd handguards
144 conversion, tracks usa extensions, custom tunnel extension and rear bumper, IQ flap, 1.25" track
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April 26th 2009 at 1:27 PM
[ Modified April 26th 2009 at 1:29 PM
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Fuel lean on PTO as Drew said. Looks like Castrol mineral oil.
Always change wrist pin and bearing with new top end. Did you check bore size when you installed new pistons last year? Look thru exhaust port and see if pto has blow-by. Blow-by is discoloration below bottom ring.
IMO, shaving head with today's fuel is recipe for a bomb. Clutching is safe and more efficient.
No Brain No Pain
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April 26th 2009 at 3:49 PM
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XLT96rider
Other sports play once a week, but this sport is with us every day.
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942 Posts
Group: Members
Member Since: January 7th 2009
Location: Wausau, Wisconsin, USA
Current Sled: 1996 Polaris XLT Special
2008-2009 Miles: 1000+
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Quote originally posted by crazyJake
well first of all if you want my 2 dollars i would shave the head couple thousands no more than .10 and smooth out your ports dont go crazy and clean your carbs and go down one jet size
Instead of 2 dollars, how 'bout 20??
and if you want to keep up with me and kevin u could just put a ski-doo motor in there lol
Smart A$$!!!! 
Coloration under the rings look good. Cylinders were bored to match the pistons, so they should be O.K.
Quote IMO, shaving head with today's fuel is recipe for a bomb That's what I was wondering...maybe it's safer to leave them alone.
Went through the ports(just smoothed them out).
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April 26th 2009 at 5:17 PM
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myvertxcape
Bring It, Don't Sing It!
myvertxcape flu sucks azz.
Updated Thursday at 8:00 PM
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2640 Posts
Group: Members
Member Since: July 10th 2005
Location: Kotlik, AK, USA
Current Sled: '07/8 600RMK 144's
2008-2009 Miles: 6200
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IF the head gaskets are what I think they are you can peel off on of the thinner layers instead of shaving your head and leave the jetting as is. An slp head would be way better than the stocker IMHO. Good luck with it. Install SLP triple pipes if that doo-head is still talking chit to you, jet it, clutch it and blow his azz down.
'08 600RMK 144" 6565 miles
SLP single pipe/can, intake kit, footwell vents, Clutching
my own shockwell intake vent, VMI rack, backrest
'07 600RMK 144" 2725 miles
SLP can, VMI rack! Footwell vents
RAW chassis tunnel bag for sale, fits RMK's and Switchbacks. $80 new, $60 shipped within US(looks like new) http://www.snowmobilefanatics.com/forum/...splay.aspx
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April 26th 2009 at 9:15 PM
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XLT96rider
Other sports play once a week, but this sport is with us every day.
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942 Posts
Group: Members
Member Since: January 7th 2009
Location: Wausau, Wisconsin, USA
Current Sled: 1996 Polaris XLT Special
2008-2009 Miles: 1000+
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Quote originally posted by myvertxcape
IF the head gaskets are what I think they are you can peel off on of the thinner layers instead of shaving your head and leave the jetting as is. An slp head would be way better than the stocker IMHO. Good luck with it. Install SLP triple pipes if that doo-head is still talking chit to you, jet it, clutch it and blow his azz down.
It's all ok, that doo-head is a buddy - he's just giving me crap - like all of them.
I was going to put triple pipes on, but they are getting VERY strict on noise around here.
Will the head gasket still seal ok if pealed apart like that??
This past season I was having clutch problems, and didn't find out what it was until about two weeks ago..  That WILL be fixed for next season though!!! And I'm not going to tell them what I'm going to do!!!
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April 26th 2009 at 9:34 PM
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I believe here was an optional thin head gasket from Polaris, required high octane at the time. Still though, gas blows today and it is not what it was when your engine was built.
my 2 cents.
No Brain No Pain
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April 26th 2009 at 10:10 PM
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XLT96rider
Other sports play once a week, but this sport is with us every day.
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942 Posts
Group: Members
Member Since: January 7th 2009
Location: Wausau, Wisconsin, USA
Current Sled: 1996 Polaris XLT Special
2008-2009 Miles: 1000+
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I'm thinking with the crappy gas that's out there, it would probably be best to leave the heads alone. Gas stations are far and few that have actual "gas" yet. And that's all I run is high octane...
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April 29th 2009 at 7:54 PM
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crazyJake
Advanced Member
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1005 Posts
Group: Members
Member Since: April 19th 2006
Location: Rothschild, Wisconsin, USA
Current Sled: 2004 ski-doo mxz rev 600
2008-2009 Miles: 400
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Quote originally posted by XLT96rider
I'm thinking with the crappy gas that's out there, it would probably be best to leave the heads alone. Gas stations are far and few that have actual "gas" yet. And that's all I run is high octane...
yeah i agree with them to just leave the head alone smarter idea and with the pipes dnr will be on your ass
current sled
2004 ski doo rev mxz x pag 600ho
1977 arctic cat pantera
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April 30th 2009 at 8:21 AM
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shady800x
Junior Member
shady800x -20 degree weather...land is getting ready for snow!
Updated Yesterday at 7:08 AM
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197 Posts
Group: Members
Member Since: August 25th 2005
Location: Kipnuk, alaska, USA
Current Sled: '03 Edge-X 800
2008-2009 Miles: not sure
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i think slp had a triple set for that xlt. and still sounded stock. i've heard one before. sounded like the stock can.
2003 Edge-X 800
Vforce 3 reeds, Powermadd Boost bottle, updated c.d.i. slp powder pro's, 1.25 predator track, fox racing clicker rear, rydefx center and skis, 1 in handle bar riser, specialty x can. 11.5 in cobra yellow tint windshield, and a sportech yellow tint lightshield.
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April 30th 2009 at 8:58 AM
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XLT96rider
Other sports play once a week, but this sport is with us every day.
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942 Posts
Group: Members
Member Since: January 7th 2009
Location: Wausau, Wisconsin, USA
Current Sled: 1996 Polaris XLT Special
2008-2009 Miles: 1000+
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Quote originally posted by shady800x
i think slp had a triple set for that xlt. and still sounded stock. i've heard one before. sounded like the stock can.
I'll have to check into that....I found a used XCR at a lot with those on it, but the dealer was an a$$ and wouldn't let me hear them.
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May 1st 2009 at 7:23 AM
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shady800x
Junior Member
shady800x -20 degree weather...land is getting ready for snow!
Updated Yesterday at 7:08 AM
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197 Posts
Group: Members
Member Since: August 25th 2005
Location: Kipnuk, alaska, USA
Current Sled: '03 Edge-X 800
2008-2009 Miles: not sure
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dang i bet it woulda been loud tho lol. what kinda xcr was it? was it a six seven or eight?
2003 Edge-X 800
Vforce 3 reeds, Powermadd Boost bottle, updated c.d.i. slp powder pro's, 1.25 predator track, fox racing clicker rear, rydefx center and skis, 1 in handle bar riser, specialty x can. 11.5 in cobra yellow tint windshield, and a sportech yellow tint lightshield.
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May 1st 2009 at 9:07 AM
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XLT96rider
Other sports play once a week, but this sport is with us every day.
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942 Posts
Group: Members
Member Since: January 7th 2009
Location: Wausau, Wisconsin, USA
Current Sled: 1996 Polaris XLT Special
2008-2009 Miles: 1000+
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^^600. The sled was pretty well beat, so I don't know what starting it for a couple of minutes would've hurt?!?!
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