2002 KX250 Head Gaskets

[v8-914]

I am refreshing the top end on my recently acquired KX250, and I noticed there are two different head gaskets shown in the parts manual. The 0.26 seems to be stock with the 0.46 shown as an option.

What's the difference between the 0.26 and the 0.46?

Thanks, Wes

[Orido]

.46 will lower your compression i believe.

sheesh, me (noob helping someone) hehe funny
hopefully i am correct

[v8-914]

Yeah my first thought was thickness too, but a 0.46 thick ? At least it would be strong!?

Wes

[Orido]

Originally Posted by v8-914

Yeah my first thought was thickness too, but a 0.46 thick ? At least it would be strong!?

Wes

i think it is 0.46" thousands of an inch

[v8-914]

I finally got to the bottom of this....

Yes, the .46 is the "Normal" head gasket for the KX250, while the .26 head is the "High Compression" head gasket and should only be used if high octane racing fuel is to be used.

Although they call it a .46 head gasket, they must really mean .046.

[Orido]

Originally Posted by v8-914

I finally got to the bottom of this....

Yes, the .46 is the "Normal" head gasket for the KX250, while the .26 head is the "High Compression" head gasket and should only be used if high octane racing fuel is to be used.

Although they call it a .46 head gasket, they must really mean .046.

haha yea, my bad, otherwise it would literally mean .460"
almost half inch

[moto814]

Originally Posted by Orido

haha yea, my bad, otherwise it would literally mean .460"
almost half inch

It's in millimeters.

-Steve

[v8-914]

Now why didn't I think of that? Where's my sign?