Head Gasket


3 replies to this topic
  • mxdude1986

Posted March 26, 2009 - 02:46 PM

#1

How hard is it to replace a head gasket? its a 98 yz400, if i go in would i have to replace anything else?

  • 642MX

Posted March 26, 2009 - 04:47 PM

#2

How hard is it to replace a head gasket? its a 98 yz400, if i go in would i have to replace anything else?


Replacing the head gasket is no big deal. I would probably replace the piston & rings if your going to take the head off. Don't forget to replace the cam chain too..... and if your really wanting to freshen it up, replace the valve springs. Take care of your YZF and it will take care of you. :thumbsup:

Visit the ThumperTalk Store for the lowest prices on motorcycle / ATV parts and accessories - Guaranteed
  • spark250

Posted March 26, 2009 - 06:05 PM

#3

Why are you changing it? If you blew a head gasket there could be some other issues.

  • Birdy426

Posted March 26, 2009 - 10:25 PM

#4

You will need at least a head gasket, base gasket, rings, and the O-Ring for the water tube where it goes in the front of the head and the O-Ring for the sleve between the cylinder and case. Make sure you surface both the mating surfaces (had and cylinder), or you are just asking for it to leak again. If the bike has low hours on it, you may not need to replace the piston, pin and circlips...if it's got high hours on it or measures out of spec, you will. As 642MX says, it's a good idea to change the timing chain and valve springs as well...cheap insurance against very catastrophic failures!





Related Content

Reviews

Yamaha YZ450F 2017 by Chris.GVS


Yamaha YZ450F 2017
  • * * * * *
  • 1 review
  • Last review by Tommyk_55
  • On January 15, 2017
Forums
Photo

BIGBORE FOR YZ450F 2006? by Taattie94


Dirt Bike   Make / Model Specific   Yamaha   YZ 400/426/450
  • 3 replies
Forums
Photo

Should I buy this bike? help....... by Numsa Hul


Dirt Bike   General Dirt Bike Forums   What bike should I buy?
  • * * * * *
  • 10 replies
Forums
Photo

Is it worth it? (Cam and High compression piston) by macgi77


Dirt Bike   Make / Model Specific   Honda   CRF 150/230 F/L
  • Hot  36 replies
Forums
Photo

2016 YZ450 by CaptainKnobby


Dirt Bike   Dirt Bike Technical Forums   Suspension
  • Hot  59 replies
 
x

Join Our Community!

Even if you don't want to post, registered members get access to tools that make finding & following the good stuff easier.

If you enjoyed reading about "" here in the ThumperTalk archive, you'll LOVE our community. Come join ThumperTalk today!

The views and opinions expressed on this page are strictly those of the author, and have not been reviewed or approved by ThumperTalk.