Head gasket interchange
  • Johnbeton
    Posts: 4
    Joined: Sun Mar 26, 2017 2:40 pm

    Head gasket interchange

    by Johnbeton » Tue Jun 11, 2019 12:12 pm

    Hello,

    I have a 2005 crf450r engine, but due to problems with my head, I bought a 2007 head.
    I notices the headgaskets have different partnr between 02-06 and 07-08.
    Alltough I read that 02 untill 08 heads are interchangeable, which head-gasket do I use ?
  • User avatar
    JimDirt
    Posts: 3198
    Joined: Sat Nov 25, 2006 6:31 pm

    Re: Head gasket interchange

    by JimDirt » Tue Jun 11, 2019 10:14 pm

    As far as I know its 02-08 , you should not have any issues I am aware of with any gasket set/kit
    02 CRF450R
    06 CRF450X
    Image
    Weiser , Idaho
  • Johnbeton
    Posts: 4
    Joined: Sun Mar 26, 2017 2:40 pm

    Re: Head gasket interchange

    by Johnbeton » Fri Jun 14, 2019 5:20 am

    Thank you, I received the head, but I think the seller scammed me and it is not an 07 head.
    Because the water outlet isn't the cast type, but the older type, i think 2003.
    Is there any way to identify the head's model year ? Since I cannot find any partnr on it
  • User avatar
    JimDirt
    Posts: 3198
    Joined: Sat Nov 25, 2006 6:31 pm

    Re: Head gasket interchange

    by JimDirt » Fri Jun 14, 2019 10:18 am

    Got this from another site:

    02-08 will interchange.

    06 is the best of the 02-06 heads with the better seat material. All 02-06 heads use the same cam/decompression system.

    07-08 heads are the same with the smaller valves than the 02-06 heads.

    07 is a 1 year ONLY cam.

    08 is a 1 year only cam!

    both use the weight style decompression system, but the gear and the cams are not compatible between years. 07=07 ONLY parts. 08= 08 ONLY Parts.


    Basically you can use any year head , as long as you use the Cam tower for your bike , it should adjust and function the same , the valve size difference will not affect actual settings like valve lash , etc... unless you find a Honda Part # , for example , the part # for a 2007 CRF450R head is 12200-MEN-A00 ....... The part # for a 2003 Honda CRF450R head is 12200-MEB-770 .......... You can find that info by locating the part # on the head itself (I can't remember where it is located on the head) and looking at the Parts Fiche and matching the number to each year till you find it http://fiche.worldofpowersports.com/yel ... ke=hondadb

    The water outlet was changed from the thin chrome one to the thicker Aluminum one , though I have never had any issues with the thin one , so not sure what the significance of the change is for , maybe , corrosion or something ..... , but basically you need to locate the part # of the head , and go on the parts fiche and find what year matches that number (may be several years) , and then just get parts for that year .... but the gaskets themselves should fit 02-08 as far as I know ...
    02 CRF450R
    06 CRF450X
    Image
    Weiser , Idaho

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