x-valve coloration

[knownothingmags]

bedsides re-annoing what can cause a fronthalf of a x-valve to be a different shade then the back half?

-the valve has not been re-anno'd
-they are both origional fronts and back from factory.
-serials match of course.

are they two different aluminums
6061 & 7075

thanks,
KNM

[mogli]

surface prep off the parts, say if someone acetoned the front half and forgot the back or vice versa

[knownothingmags]

hmmm
does anyone know a good x-valve annoer or instructions on annoing an x-valve so i can get them to my annoer?

thanks,
KNM

[mogli]

I'm involved with the SAE baja team at RIT and we get our brake calipers annoed all the time, We wet sand and acetone the parts first, but I don't know if the our supplier preps them also. I'll try to get more info.

[knownothingmags]

yes yes please do.

[BiNumber3]

If it's a lighter shade it may have been baked, not sure if people still do that but for a while people were baking their guns to fade the anno, no idea what that does to the anno integrity though.

[knownothingmags]

hmm,
its a blue x-valve
the front is lighter then the back with the x on it.

[IrishRedneck86]

I know for a fact Bazooka_boy has re-annoed several X-valves

[BiNumber3]

Ah in the case of colored ones, like you mentioned the front and back are different types, and take color differently, and will be more noticeable with colors.
Think most colored valves I've seen that were factory didn't have that issue though

[knownothingmags]

its gota be factory right it has its serial and the psi warning on the valve.

[Tunaman]

The blue was the worst for parts not matching. I dont ever recall any other color giving AGD so many problems.

[knownothingmags]

awsome thankyou tuna
thats what i needed to know.

[TwilightG]

I've also owned 2 blue X-valves, factory anno, and the halves never match up just right. Close, but not identical.

[Ando]

This topic has been brought up before and the consensus was the back and fronts were different metal grades.

Not sure if someone was talking out their ass or not but...makes perfect sense

[knownothingmags]

got it,
thankyou again guys.