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would bigger carbs on my triple create more power?
started by jrod
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October 26th 2009 at 2:17 PM
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jrod
Starting Member
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9 Posts
Group: Members
Member Since: September 8th 2009
Location: bismarck, ND, USA
Current Sled: '96 polaris xlt 600 sks
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on my 95 xlt 600sks i believe i have 34mm mikuni carbs. would bigger carbs create more power or is it just a waste of money. and i have a 133" track and i want to go bigger. where can i find a kit for this. all i can find is kits for 121" and 136".
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Site Supporter
Group: Site Supporters
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October 26th 2009 at 3:13 PM
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PolarisBoy1996
Hard Core Sled Lover
PolarisBoy1996 Got my handguards, mounts, and extensions in the mail today. Just finished putting them on, hope they work good!
Updated Thursday at 3:44 PM
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291 Posts 
Group: Members
Member Since: September 20th 2009
Location: Bright's Grove, Ontario, Canada
Current Sled: 95' Polaris Indy Starlite
2008-2009 Miles: 50
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SLP makes rail extensions for track extensions so check with them.
It's not what you drive, It's what drives you!
Pain is just weakness leaving the body!
Current Sleds:
1995 Polaris Indy Starlite 250 - Mine
2001 Polaris XCF SP 440 - Dad's
1995 Polaris Indy XLT Special 600 Mod - Brother's
Past Sleds:
2001 Polaris XCSP 600 w/modded out 2003 Polaris ProX 600 motor - Dad's
1998 Ski-Doo Formula 380 - Mom's First
2003 Polaris ProX 600 - Mom's Second
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October 26th 2009 at 4:12 PM
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jrod
Starting Member
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9 Posts
Group: Members
Member Since: September 8th 2009
Location: bismarck, ND, USA
Current Sled: '96 polaris xlt 600 sks
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ya i tried them and tracks usa but neither have anything.
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October 26th 2009 at 5:52 PM
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bigwedgies
Average Member
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611 Posts 
Group: Members
Member Since: November 2nd 2006
Location: lake city, pennsylvania
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if your sled wasnt originally equiped with the 38mm carbs, adding them will hurt your performance. youre motor isnt designed to run them. find a set of pipes and set up the clutching properly.
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October 26th 2009 at 6:02 PM
[ Modified October 26th 2009 at 6:02 PM
]
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powersledder
PSI Powered
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3606 Posts 
Group: Members
Member Since: September 1st 2006
Location: Houghton, MI, USA
Current Sled: 07 IQr
2008-2009 Miles: No Speedo
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Adding bigger carbs to a stock engine will only create trouble. If you had piped and ported your engine then bigger carbs would be a plus.
As far as getting a longer track. Look for a set of 136-144 extension (thats an extra 8") add those to your 133 (133+ 8 = 141) Then find a 141" 2.52 pitch track. But with your stock chassis you're going to have to find one thats probably 1.25" or smaller lugged.
Polaris 800HO monoblock cylinder for sale PM me with offers
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October 26th 2009 at 6:28 PM
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jrod
Starting Member
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9 Posts
Group: Members
Member Since: September 8th 2009
Location: bismarck, ND, USA
Current Sled: '96 polaris xlt 600 sks
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wow i feel stupid i never thought of that, thnx powersledder.
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November 1st 2009 at 9:54 AM
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PolarisBoy1996
Hard Core Sled Lover
PolarisBoy1996 Got my handguards, mounts, and extensions in the mail today. Just finished putting them on, hope they work good!
Updated Thursday at 3:44 PM
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291 Posts
Group: Members
Member Since: September 20th 2009
Location: Bright's Grove, Ontario, Canada
Current Sled: 95' Polaris Indy Starlite
2008-2009 Miles: 50
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Like "bigwedgies" said though, if your sled hadn't come with factory equiped 38mm carbs than don't put a set on because your motor is not designed to run them, and will create problems. The best thing to do is put on a set of triple pipes (my brother put them on his XLT and gained almost 25hp) and clutch it properly. My brother put a Heelclciker clutch kit on his XLT as well and it made a huge difference.
It's not what you drive, It's what drives you!
Pain is just weakness leaving the body!
Current Sleds:
1995 Polaris Indy Starlite 250 - Mine
2001 Polaris XCF SP 440 - Dad's
1995 Polaris Indy XLT Special 600 Mod - Brother's
Past Sleds:
2001 Polaris XCSP 600 w/modded out 2003 Polaris ProX 600 motor - Dad's
1998 Ski-Doo Formula 380 - Mom's First
2003 Polaris ProX 600 - Mom's Second
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November 1st 2009 at 11:34 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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Anybody know specifically what the differences are with the engine between the 34mm carbs and 38mm carbs? I have a 97 XLT SKS with 34mm carbs and a 96 XLT SP with 38mm carbs. The exhausts look like they're the same. The SP has higher compression, but I was wondering if anything else is different.
Also, to get full WOT with the larger carbs, you have to have a different style throttle lever that has a little longer throw because the slides in the larger carbs have more travel.
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November 1st 2009 at 11:58 AM
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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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The motors with the larger carbs have high port cylinders I believe.
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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November 1st 2009 at 12:03 PM
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bigwedgies
Average Member
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611 Posts
Group: Members
Member Since: November 2nd 2006
Location: lake city, pennsylvania
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i believe and i said believe i dont know for a fact.....im sure il be corrected
the ports are higher on the factory equipted 38mm carbs are higher, this allows the "valves" to open sooner allowing more of the fuel/air mixture to be sucked into the cylinder, as well asx be exhausted correctly. i also quoted valves so people hopefully know i meant pistons but was refering to the piston travel in the cylinder.
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November 1st 2009 at 8:19 PM
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freedomrider
Master of POO
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318 Posts
Group: Members
Member Since: October 7th 2007
Location: NY., USA
Current Sled: '06, Fusion 900
2008-2009 Miles: impatient
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Bigger carbs on a stock motor is like eating too much candy, You'll just get Fatt.
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