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Old 03-24-2020, 08:37 AM   #1 (permalink)
Join Date: Feb 2020
Posts: 4
Current Sled(s): 2017 Polaris XCR 800 Rush
Previous Sled(s): 1998 Indy 500, 1998 XLT Touring
Location: Central Wisconsin
Favorite Riding Area: Northern Wisconsin
19-20 Mileage: 760
18-19 Mileage: 525
17-18 Mileage: 800
16-17 Mileage: 1100
Age: 45
Riding Since: 1988
Default 800 Updates

My 2017 XCR 800 has about 5400 miles on now. Compression is great and everything is running good right now. I know that I will in the future have to do some engine work, just wondering how much different is worthwhile the 2018 head is over the 2017. Most likely sticking with Poo parts for everything - just wondering what else I might run into when I have to do this. Thanks!
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Old 03-24-2020, 10:58 AM   #2 (permalink)
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just-pinch-it's Avatar
Join Date: Mar 2005
Posts: 1,908
Current Sled(s): Waiting...
Previous Sled(s): Pro-R SB 800, 700 dragon, Pro-XR, XCR, Storm, XLT, Trail
Location: IN
Favorite Riding Area: MI
Riding Since: 86

Your close to out of warranty, I would consider the SLP head kit with the ‘18 update if your going to consider updating head. Might as well get a little performance gain out of it for the same price.
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Old 03-24-2020, 11:13 AM   #3 (permalink)
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Join Date: Dec 2004
Posts: 3,107
Current Sled(s): Pol IQR 600; '03 ProX 6; '07 XC5; 01 Indy 5
Previous Sled(s): '98 XC 6; '95 XLT; '76 Doo RV
Location: Central Maine
Favorite Riding Area: Area 51 (Western Maine)
Age: 52
Riding Since: 1978

My son's '17 Assault 800 has been nearly flawless. He's had only two issues in over 4,000 miles:

1. four worn-out idler wheel bearings at approximately 3,000 miles (replaced with a complete set from Northstarrick)
2. a pin hole in one of the coolant hoses (fixed under warranty)

A screw fell off one of his scratcher mounts and did some minor damage to the underside of his track, but that's not Polaris's fault. It's worth noting that my son is still using the original belt.

He thought about upgrading to the 2018 head, which uses a different thermostat designed to lower coolant temps, but he opted to install a different set of scratchers instead. He was using the cable-style ones -- now he's using the Ski-Doo ones. Most of the time the sled runs in the 124 to 126-degree range. When the trails are icy, however, and temps creep up to the low 140s, he uses the scratchers to bring the temps down to the 120s. The 2018 head/thermostat set-up runs quite a bit cooler than that.

Northstarrick would be your best bet when it comes to getting information about switching to a 2018 head. Send him a private message.
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Old 03-24-2020, 07:44 PM   #4 (permalink)
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Join Date: Feb 2006
Posts: 3,717
Location: hudson valley ny
Favorite Riding Area: salisbury, speculator, cny

my 2018 xcr runs 99-100 degrees all day. takes a good stretch to get it warm
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