Cracked Head, Blown Head Gasket due to Radiator Cap - Arctic Cat Prowler Forums: Prowler UTV Forum
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post #1 of 11 (permalink) Old 04-12-2010, 02:13 PM Thread Starter
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Cracked Head, Blown Head Gasket due to Radiator Cap

Everyone with an XTZ1000 may want to check their radiator caps. According to my dealer due to the radiator cap blowing at 4psi it let the coolant out and then the engine over heated quickly, this then blew the rear cylinder head gasket and cracked the head and pulled the threads out of the block (over $1850 in reapirs, luckily I have extended warranty so it was only $50 for me, plus 4 weeks without machine and two 250+ mile round trips to the dealer). The notes on the repair order said "that it blew the same place as all the others". They replaced the radiator cap with one that handles more pressure (13psi +). Just thought others may want to know.
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post #2 of 11 (permalink) Old 04-12-2010, 03:28 PM
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Which 13+ cap and where do you get one?
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post #3 of 11 (permalink) Old 04-12-2010, 04:24 PM
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The XTZ comes with a 13lb radiator cap. At least all the ones the came through here did. I wonder if somehow, some got mixed up at the factory and ended up with incorrect caps. Or perhaps they had bad radiator caps that failed.
Glad that warranty took care of you on that.

Arctic Cat Prowler Desert Race XTZ: ITP BajaCross tires on ITP Beadlocks, Beard Super TZ Seats, Crowe 5pt harnesses, King Off-Road Racing Shocks, Custom Racing Chassis with 7 inch longer wheelbase, +5 Suspension set at 16 Front and 17 inches Rear inches travel, UTVINC did the tube bending
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post #4 of 11 (permalink) Old 04-13-2010, 02:53 PM
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Do the caps specify the lb rating?

Any thoughts on running engine ice, or redline water wetter in these machines?

2009 Orange XTZ
Prestige Motorsports 4 seat cage, tie rods. UtvInc skids, half doors. 1.5in wheel spacers.


http://www.prowlertalk.net/forums/ar...html#post37739
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post #5 of 11 (permalink) Old 04-13-2010, 04:24 PM
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Quote:
Originally Posted by socal2ks View Post
Do the caps specify the lb rating?

Any thoughts on running engine ice, or redline water wetter in these machines?
The caps should have printed on them the pressure relief rating.
Additives might be worth a look...

Arctic Cat Prowler Desert Race XTZ: ITP BajaCross tires on ITP Beadlocks, Beard Super TZ Seats, Crowe 5pt harnesses, King Off-Road Racing Shocks, Custom Racing Chassis with 7 inch longer wheelbase, +5 Suspension set at 16 Front and 17 inches Rear inches travel, UTVINC did the tube bending
TEAM PROWLER NATION...
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post #6 of 11 (permalink) Old 04-13-2010, 06:51 PM
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Im now running the Evans pro coolant and it really seems to work great.
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post #7 of 11 (permalink) Old 04-13-2010, 07:01 PM
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I am running Liquid Performance in mine now an havnt got it over 175 yet.
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post #8 of 11 (permalink) Old 04-13-2010, 11:49 PM
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Ive tried them all and the Evans Npg waterless coolant is the best.
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post #9 of 11 (permalink) Old 04-13-2010, 11:53 PM
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Did you use the "prep fluid" for the Evans npg?

Or did you simply drain and refill.

2009 Orange XTZ
Prestige Motorsports 4 seat cage, tie rods. UtvInc skids, half doors. 1.5in wheel spacers.


http://www.prowlertalk.net/forums/ar...html#post37739
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post #10 of 11 (permalink) Old 04-15-2010, 12:48 AM
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Quote:
Originally Posted by socal2ks View Post
Did you use the "prep fluid" for the Evans npg?

Or did you simply drain and refill.
I followed the instructions and used the prep and made sure before the prep that the system was really cleaned out by blowing compressed air through it and gaot a lot of old anti freeze out before the prep fluid and blew out as much of the prep fluid with air that would come out. Rotax has issued a tsb for there airplane engines to use the stuff too. and it does work awesome.
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