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March 9th, 2010, 06:05 PM
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#11
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Join Date: Dec 2007
Location: Idaho Falls, ID
Posts: 114
Thanks: 1
Thanked 5 Times in 5 Posts
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Quote:
Originally Posted by bruteboy
what you mean convert them?
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You have to convert the specs in the manual from the metric system to our system. For example, .020 of an inch is not the same as .020 of a millimeter. Here's a link to one of many conversion web sites on the net,
http://www.metric-conversion-tables....sionlength.htm
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2007 Brute 750i
Warn XT-30 Winch
Warn Pro-Vantage front mounted plow
26 Swamplites on 12" black SS108 rims (9" frt, 12" rear)
Fender Flares
Oil Cooler
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March 9th, 2010, 06:31 PM
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#12
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Join Date: Oct 2006
Location: West Chazy, NY
Posts: 2,470
Thanks: 3
Thanked 11 Times in 11 Posts
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I run 91, or higher, octane in my Prairie and I have 11.5:1 compression pistons. Just run premium unleaded and you will be fine.
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'03 Prairie 650 - Muzzy, Dyna CDI, Twin Air Powerflow, EHS lid, DG Snorkle, 82mm 11.5:1 pistons, BF750 crank, P700 connecting rods, YFZ catch can, Flynt trail porting, UPP intakes, AMR cams, rocker mod, MW oil cooler, Works struts, VFJ Stage 3 spider mod clutch, lightened secondary, Goodyear MT/R's on Douglas Rattlesnakes
'05 Polaris Sportsman 400
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March 9th, 2010, 07:34 PM
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#13
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Join Date: Aug 2008
Location: Albuquerque, NM
Posts: 6,000
Thanks: 4
Thanked 163 Times in 160 Posts
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Quote:
Originally Posted by bruteboy
you cant put 93 right?
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No way...not with that ratio.
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06 750 (Silver)
Dynatek CDI |TwinAir Filter | Catch Can | Precision Pro Stabilizer | Perma-Cool Oil Cooler | Diamond "G" Tie Rods & Ends | Energy Swaybar Bushings | OMI Stem Bushing | Ricochet Skid Plates | HL Bumper | Direction2 Overfenders
Vids On Vimeo | Vids On Contour | Vids On You Tube
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March 9th, 2010, 10:49 PM
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#14
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Join Date: Oct 2006
Location: West Chazy, NY
Posts: 2,470
Thanks: 3
Thanked 11 Times in 11 Posts
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Quote:
Originally Posted by NMKAWIERIDER
No way...not with that ratio.
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I don't mean to disagree, but have been using plain old PREMIUM unleaded in my Prairie for the last year and a half, and I have Wiseco 11.5:1 pistons, ported heads, and custom grind (AMR) cams. Flynt (popular builder on High Lifter), and VForceJohn, told me that I do not need race fuel with 11.5:1 ratio pistons. Anything higher than that ratio and they told me I would need racing fuel, but not with the Wiseco pistons.
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'03 Prairie 650 - Muzzy, Dyna CDI, Twin Air Powerflow, EHS lid, DG Snorkle, 82mm 11.5:1 pistons, BF750 crank, P700 connecting rods, YFZ catch can, Flynt trail porting, UPP intakes, AMR cams, rocker mod, MW oil cooler, Works struts, VFJ Stage 3 spider mod clutch, lightened secondary, Goodyear MT/R's on Douglas Rattlesnakes
'05 Polaris Sportsman 400
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March 9th, 2010, 11:09 PM
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#15
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Join Date: Aug 2008
Location: Albuquerque, NM
Posts: 6,000
Thanks: 4
Thanked 163 Times in 160 Posts
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Quote:
Originally Posted by Adirondack Man
I don't mean to disagree, but have been using plain old PREMIUM unleaded in my Prairie for the last year and a half, and I have Wiseco 11.5:1 pistons, ported heads, and custom grind (AMR) cams. Flynt (popular builder on High Lifter), and VForceJohn, told me that I do not need race fuel with 11.5:1 ratio pistons. Anything higher than that ratio and they told me I would need racing fuel, but not with the Wiseco pistons.
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And no preignation? What is the total compression? The 12.0:1 I had in my LT1 had to have none less then 108. Bumping 200lbs with the shaved decks. She was sweet...but only when she was fed right. Hard to believe a .5 difference in compression can allow you to drop all the way down to 94. I guess it would depend on the actual compression.
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06 750 (Silver)
Dynatek CDI |TwinAir Filter | Catch Can | Precision Pro Stabilizer | Perma-Cool Oil Cooler | Diamond "G" Tie Rods & Ends | Energy Swaybar Bushings | OMI Stem Bushing | Ricochet Skid Plates | HL Bumper | Direction2 Overfenders
Vids On Vimeo | Vids On Contour | Vids On You Tube
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March 9th, 2010, 11:17 PM
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#16
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Join Date: Nov 2007
Location: Kamloops British Columbia, Canada
Posts: 1,108
Thanks: 2
Thanked 15 Times in 15 Posts
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It has alot to do with the cam design also. intake duration and lobe seperation play a big role in the fuel you need to run
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2007 Rack Smacker 750 SOLD SOLD SOLD
2012 RZR 800
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March 9th, 2010, 11:54 PM
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#17
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Join Date: Aug 2008
Location: Albuquerque, NM
Posts: 6,000
Thanks: 4
Thanked 163 Times in 160 Posts
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Quote:
Originally Posted by BrianMc
It has alot to do with the cam design also. intake duration and lobe seperation play a big role in the fuel you need to run
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Also plays a big roll in the size of the charge.
__________________
06 750 (Silver)
Dynatek CDI |TwinAir Filter | Catch Can | Precision Pro Stabilizer | Perma-Cool Oil Cooler | Diamond "G" Tie Rods & Ends | Energy Swaybar Bushings | OMI Stem Bushing | Ricochet Skid Plates | HL Bumper | Direction2 Overfenders
Vids On Vimeo | Vids On Contour | Vids On You Tube
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March 10th, 2010, 01:24 PM
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#18
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Join Date: Feb 2010
Location: south carolina
Posts: 238
Thanks: 5
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with the jets whats the best jets to buy and is it a pain to tune?
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March 10th, 2010, 03:32 PM
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#19
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Join Date: Aug 2008
Location: Albuquerque, NM
Posts: 6,000
Thanks: 4
Thanked 163 Times in 160 Posts
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Quote:
Originally Posted by bruteboy
with the jets whats the best jets to buy and is it a pain to tune?
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I recommend the Kiehin Jets. EHS racing has them. I get mine from PJs Yes, it can be a pain to tune.
Your Keihin-Mikuni Jets Store-Pjmotorsports.Com
__________________
06 750 (Silver)
Dynatek CDI |TwinAir Filter | Catch Can | Precision Pro Stabilizer | Perma-Cool Oil Cooler | Diamond "G" Tie Rods & Ends | Energy Swaybar Bushings | OMI Stem Bushing | Ricochet Skid Plates | HL Bumper | Direction2 Overfenders
Vids On Vimeo | Vids On Contour | Vids On You Tube
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March 10th, 2010, 10:11 PM
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#20
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Join Date: Feb 2010
Location: south carolina
Posts: 238
Thanks: 5
Thanked 1 Time in 1 Post
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have you figured out the best way to tune them or do you just play with it till get it??
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