ada girdle head question

[butti]

is there more than one type of ada dome?the reason i ask is because i have a brand new ada o-ring kit for this head and the fire rings dont fit the domes worth a damn:dunno: what gives?

 

[Big Kahuna]

what do you mean???

 

[njfl]

It might just be an optical illusion, but it appears that the groove is wider on the left dome. ADA marks the underside of their domes with the part number. Take a look to see if these are a matched pair.

 

[njfl]

Back to your original question, they used to have part numbers starting with YA2xxx and currently they use YA7xxx series. Perhaps there are differences n the O-rings.

 

[Big Kahuna]

not sure if they changed domes on the current design................ stupid if they did.

 

[yamaslut]

is there more than one type of ada dome?the reason i ask is because i have a brand new ada o-ring kit for this head and the fire rings dont fit the domes worth a damn:dunno: what gives?

I have noticed that same thing on my domes....??????? one set of domes the orings fit snug and one set the orings are kinda sloppy and loose fitting...

 

[butti]

if you look at the dome on the left you can see that the o-ring recess is way bigger than the o-ring.they both fit this way


nick,have you ran yours this way?


these domes may be real old,i got them from tricky used about a year ago,theres no telling how old they are

 

[sflsurfrider]

if the groove is proportionally deeper as it is wider (than the other one), id think it wouldnt seal properly.

 

[yamaslut]

if you look at the dome on the left you can see that the o-ring recess is way bigger than the o-ring.they both fit this way


nick,have you ran yours this way?


these domes may be real old,i got them from tricky used about a year ago,theres no telling how old they are

strangely enough... it made no difference. I think the one on the right may have been lapped... looks as if it is not as deep as the other dome. Check the depth w/ dial calipers

 

[njfl]

Butti, are the two o-rings the same size? The one on the left looks thinner (but maybe it's just the lighting).

 

[Idok]

pretty sure they're the same size.....we were just talking about this at lunch..