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post #1 of 25 (permalink) Old 09-02-2013, 03:52 PM Thread Starter
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High Altitude Jetting....

Seth sent me this high altitude jetting list a while back. I was just wondering if anybody was running close to the recommended jetting and what results are/were you getting? Anybody running in the 4500'-8500' elevation? What are you running?

I'm currently running the stock 132 jet in my stock carb. I typically run anywhere in the 4500'-8500' elevation. Last year I was running a K&N filter. My Prowler has never seemed to have the speed/zip that I thought it should have (or others mentioned of theirs). So I was wondering if it was the jetting that is killing it? This year I will be running the stock air filter with a Uni pre-filter. I was thinking of rejetting. Right now I have a spare 128 and 125 main. I was wondering what I should run? I just don't want to run lean.
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Name: Shane

-2011 Polaris RZR-4 800 (SOLD)
-1999 Polaris Sportsman 500 ATV
-2006 AC Prowler 650XT (SOLD)-- updated bevel gears, updated oil pump driven gear, 4 wheel disc brakes, line lock E-brake, Papa Slap clutch, Xentec HID's, Dynatek CDI, Warn skid plates, Intellitronix gauges, 2010 intake/cvt duct work and dust shield, RZR seats, Bestop folding windshield, full cab kit, rear cage and rear seats (4 seater)

Last edited by out west; 09-02-2013 at 04:29 PM.
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post #2 of 25 (permalink) Old 09-02-2013, 06:55 PM
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Quote:
Originally Posted by out west View Post
Seth sent me this high altitude jetting list a while back. I was just wondering if anybody was running close to the recommended jetting and what results are/were you getting? Anybody running in the 4500'-8500' elevation? What are you running?

I'm currently running the stock 132 jet in my stock carb. I typically run anywhere in the 4500'-8500' elevation. Last year I was running a K&N filter. My Prowler has never seemed to have the speed/zip that I thought it should have (or others mentioned of theirs). So I was wondering if it was the jetting that is killing it? This year I will be running the stock air filter with a Uni pre-filter. I was thinking of rejetting. Right now I have a spare 128 and 125 main. I was wondering what I should run? I just don't want to run lean.
I believe they make a 130 also, Start with your 128 first, you always want to start big and work your way down.since you are running two filters now there will be a restriction in your air flow,even more now with your 2010 duct work maybe.you may need to make a adjustment on your pilot jet,stock is 40 on that jet,and on your fuel/air mixture screw stay around 1 1/2 to 2 turns out.

2015 A/C Sport,With a few add ons..........
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post #3 of 25 (permalink) Old 09-06-2013, 01:35 PM
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Hey Shane. D3 knows way more about jetting than I think anyone does. I live at 4500' and was Elk hunting this week at 9500'. I installed a 142 jet and it ran awesome! but I also have a 2" intake snorkel with a stock air filter!....we live around the same elevation? (I put the snorkel on for dust, and couldn't have asked for better results. I put on a lot of miles since last Friday, and my filter still looks clean!) hope this helps! Tom

2008 Prowler 650XT,
Sedona Rip saws, Warn 3000lb winch, PIAA HID, LED aux lighting, Custom Pre Runner bumper light bar, A/C hard top, Arctic Thunder Custom Snorkel kit , AC suspension seats, Big Gun exhaust, Full Aluminum skid plates, Dynatech CDI, voltage-oil-temp gauges,

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post #4 of 25 (permalink) Old 09-06-2013, 03:40 PM Thread Starter
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Quote:
Originally Posted by NVhunter View Post
Hey Shane. D3 knows way more about jetting than I think anyone does. I live at 4500' and was Elk hunting this week at 9500'. I installed a 142 jet and it ran awesome! but I also have a 2" intake snorkel with a stock air filter!....we live around the same elevation? (I put the snorkel on for dust, and couldn't have asked for better results. I put on a lot of miles since last Friday, and my filter still looks clean!) hope this helps! Tom
Does a snorkel change the jetting that much? I'm a little surprised even with the snorkel that you would be running a 142 at that altitude. I was thinking of dropping mine initially to a 128 and see what happens.

Name: Shane

-2011 Polaris RZR-4 800 (SOLD)
-1999 Polaris Sportsman 500 ATV
-2006 AC Prowler 650XT (SOLD)-- updated bevel gears, updated oil pump driven gear, 4 wheel disc brakes, line lock E-brake, Papa Slap clutch, Xentec HID's, Dynatek CDI, Warn skid plates, Intellitronix gauges, 2010 intake/cvt duct work and dust shield, RZR seats, Bestop folding windshield, full cab kit, rear cage and rear seats (4 seater)
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post #5 of 25 (permalink) Old 09-06-2013, 03:57 PM
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Quote:
Originally Posted by out west View Post
Does a snorkel change the jetting that much? I'm a little surprised even with the snorkel that you would be running a 142 at that altitude. I was thinking of dropping mine initially to a 128 and see what happens.
Sometimes snorkels can change your jetting either way depending on DIA of snorkel, how tall, what filter your running,and if you running a pre-filter.

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post #6 of 25 (permalink) Old 09-06-2013, 10:24 PM
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Hey mike. Check out my Arctic Elk avatar! Had a great trip!

2008 Prowler 650XT,
Sedona Rip saws, Warn 3000lb winch, PIAA HID, LED aux lighting, Custom Pre Runner bumper light bar, A/C hard top, Arctic Thunder Custom Snorkel kit , AC suspension seats, Big Gun exhaust, Full Aluminum skid plates, Dynatech CDI, voltage-oil-temp gauges,

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post #7 of 25 (permalink) Old 09-07-2013, 05:31 AM Thread Starter
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Quote:
Originally Posted by NVhunter View Post
Hey Shane. D3 knows way more about jetting than I think anyone does. I live at 4500' and was Elk hunting this week at 9500'. I installed a 142 jet and it ran awesome! but I also have a 2" intake snorkel with a stock air filter!....we live around the same elevation? (I put the snorkel on for dust, and couldn't have asked for better results. I put on a lot of miles since last Friday, and my filter still looks clean!) hope this helps! Tom
Tom, do you recall what jet you were running prior to installing your snorkels and how it ran then?

Name: Shane

-2011 Polaris RZR-4 800 (SOLD)
-1999 Polaris Sportsman 500 ATV
-2006 AC Prowler 650XT (SOLD)-- updated bevel gears, updated oil pump driven gear, 4 wheel disc brakes, line lock E-brake, Papa Slap clutch, Xentec HID's, Dynatek CDI, Warn skid plates, Intellitronix gauges, 2010 intake/cvt duct work and dust shield, RZR seats, Bestop folding windshield, full cab kit, rear cage and rear seats (4 seater)
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post #8 of 25 (permalink) Old 09-07-2013, 07:04 AM
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Tom .. the avatar a result of the recent hunting trip ? [small pic and doesn't blow up well so can't tell if fresh]

name is Gary or hey you if ya forget

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'83 CJ7 / SBC + whole lot added here and there
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post #9 of 25 (permalink) Old 09-07-2013, 10:51 PM
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Quote:
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Tom, do you recall what jet you were running prior to installing your snorkels and how it ran then?
A 132 main jey

2008 Prowler 650XT,
Sedona Rip saws, Warn 3000lb winch, PIAA HID, LED aux lighting, Custom Pre Runner bumper light bar, A/C hard top, Arctic Thunder Custom Snorkel kit , AC suspension seats, Big Gun exhaust, Full Aluminum skid plates, Dynatech CDI, voltage-oil-temp gauges,

Tom
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post #10 of 25 (permalink) Old 09-08-2013, 08:08 AM Thread Starter
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Quote:
Originally Posted by NVhunter View Post
A 132 main jey
How did yours run with that jet at elevations 4500'-8500'?

Name: Shane

-2011 Polaris RZR-4 800 (SOLD)
-1999 Polaris Sportsman 500 ATV
-2006 AC Prowler 650XT (SOLD)-- updated bevel gears, updated oil pump driven gear, 4 wheel disc brakes, line lock E-brake, Papa Slap clutch, Xentec HID's, Dynatek CDI, Warn skid plates, Intellitronix gauges, 2010 intake/cvt duct work and dust shield, RZR seats, Bestop folding windshield, full cab kit, rear cage and rear seats (4 seater)
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