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06-29-2009, 09:48 PM
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#1 (permalink)
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Registered User
Join Date: Jun 2009
Location: Ontario
Posts: 4
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head?
hey does anyone know if i take off the head on my f7 will i need a new gasket?
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06-29-2009, 10:02 PM
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#2 (permalink)
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Super Moderator
Join Date: Jan 2004
Location: oregon
Posts: 3,287
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Welcome to the forum!
The seal from the head to the cylinder uses two rubber O-rings. It's been my experience that trying to reuse the O-rings usually results in a leak. I would use new ones., but you may be luckier than me 
__________________
2007 RMK 700 155", 2008 RMK 600 155", 2006 RMK 600 144", 98 Indy 440, 95 Prowler 550 2-up, 1990 Indy 650
RIP, destroyed by fire 1-22-2008 
04 RMK 800, 05 RMK 600, 02 RMK 800, 97 RMK 700
http://www.avalanche.org/accidents.php
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06-30-2009, 07:29 AM
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#3 (permalink)
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I am Spartacus
Join Date: Feb 2004
Location: Milton Mills, NH
Posts: 17,647
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Definitely replace the O-rings. They are like 6 bucks. Well worth the grief of trying to reuse the old ones. Welcome aboard!
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06-30-2009, 06:42 PM
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#4 (permalink)
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Registered User
Join Date: Jun 2009
Location: Ontario
Posts: 4
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alright thanks alot guys, i hear lots of good information on this site.  |
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06-30-2009, 09:45 PM
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#5 (permalink)
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Registered User
Join Date: Nov 2007
Posts: 213
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ya def always replace gaskets and seals when takin off head, and if u dont mind askin, why u takin the head off? problems??
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FDRAGONS, TUNNIN FORKS, AND BEES CANT KILL THEM CATS!
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07-01-2009, 03:07 PM
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#6 (permalink)
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Registered User
Join Date: Jun 2009
Location: Ontario
Posts: 4
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 because the f7 has over 10205 kilometers and i would like to see the condition of the piston and head.i took off the Y pipe and took a pic. what do you guys think i should do? it has some scratches on the piston......  !!
hope u can see the picture |
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07-01-2009, 03:51 PM
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#7 (permalink)
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Super Moderator
Join Date: Feb 2005
Location: Groton NY
Posts: 14,474
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Some scratching of the piston skirt is normal.
Unless the compression is low (>100psi), you should have no need to open it up.
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07-01-2009, 04:07 PM
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#8 (permalink)
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Registered User
Join Date: Jun 2009
Location: Ontario
Posts: 4
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07-01-2009, 06:09 PM
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#9 (permalink)
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Super Moderator
Join Date: Feb 2005
Location: Groton NY
Posts: 14,474
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Yep, normal scoring. Shows that he needed to allow a longer warm up time though.
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07-01-2009, 08:44 PM
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#10 (permalink)
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TRH- Troll Raising Hell
Join Date: Mar 2007
Location: MN
Posts: 2,851
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Misleading title....
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05/29/84-11/25/07-RIP- Sarah Louise Beard
I'd rather be judged by 12 than carried by 6...
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07-03-2009, 09:24 PM
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#11 (permalink)
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Registered User
Join Date: Jul 2009
Posts: 6
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Definetly change them when the motor heats up they expand and when it cools they stay expanded so when you take the head off they will pop out and will not fit back in.
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07-06-2009, 07:50 AM
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#12 (permalink)
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Super Moderator
Join Date: Dec 2006
Location: Northern IL
Posts: 6,220
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Looks like a bit of blow by! For the cost of a set of rings and gaskets, I would atleast freshen the motor! I personally would do pistons too! The cost to do is alot cheaper then once it blows up! And you got plenty of time!!! I would also since you're into it, clean up the transfere ports too!
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