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  #1  
Old 03-25-2009, 09:41 AM
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Default sportsman 500 compression

how much compression should a 96 sportsman 500 push??? think its time 4 a rebuild...i lost all the power...just did a head gasket after this a few hours after asome puttin around it lots it all even in low.....
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Old 03-25-2009, 02:52 PM
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Default sportsman 500 compression

anyone???
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Old 03-25-2009, 03:46 PM
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Default sportsman 500 compression

you might ned just a new cam as the older ones wore off lobes. i would guess at least 120 psi new but its guess a guess w/out looking.
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Old 03-26-2009, 10:21 AM
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Default sportsman 500 compression

with the auto decompression u should see 85 - 95 psi
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Old 03-26-2009, 10:21 AM
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Default sportsman 500 compression

if ur thinking about rebuilding, why not go with a 11:1 comp piston, the HO cam and carb as well, make it run way better
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  #6  
Old 03-26-2009, 10:41 AM
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Default sportsman 500 compression

Where can I fond a 11:1 piston for a 98 500 sportsman?
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Old 03-26-2009, 11:25 AM
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Default sportsman 500 compression

i was told by a mechanic here in town that it should be anywhere from 175 to 190psi??? is that right?
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Old 03-26-2009, 11:33 AM
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Default sportsman 500 compression

thats not right with the auto decompression if it was 175 to 190 we would be replacing more starters then we already are and if u go to aaenperformance.com u can find the piston, made by wiseco, either std bore or .020 oversize
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Old 03-26-2009, 11:52 AM
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Default sportsman 500 compression

i was told to put a compression gauge on it and hold the throttle wide open and crank it until the pressure goes up and stops....or cold it be the cam??? i just put a new head gasket in and the cam didnt look 2 bad...someone please give me some info it is appreacitated...thanks guyes!!!
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Old 03-26-2009, 12:44 PM
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Default sportsman 500 compression

<div class="FTQUOTE"><begin quote>Originally posted by: teamplayer

Where can I fond a 11:1 piston for a 98 500 sportsman?</end quote></div>

500 stage kits
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Old 03-26-2009, 12:44 PM
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Tags
2000, 500, 96, 98, atv, camshaft, compression, fix, gasket, head, low, polaris, sportmans, sportsman, whats, wore



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