20b Primary Injector O-ring Sizes?
 

I probably should have asked over here first, as my thread over 'there' isn't getting any answers. I pulled the primaries out of my 20b rail last night in preparation for testing them on my newly constructed flow bench and ran into a few problems.

Namely, I'm an idiot and threw them into a bucket of carb cleaner before removing the o-rings. Now they're broken / swollen, duh. Does anyone have the actual dimensions of all 3 o-rings (cross section and ID/OD), or can make some measurements for me? Mazda wants +$100 for 3 upper and 3 lower, and can't even find the middle.

Measured in mm,

Top Oring 18.00 I.D. , 22.63 O.D. 2.33(+/-)dia/cross section.
Middle Oring 7.50 I.D. , 14.50 O.D. , 3.49dia/cross section.
Bottom Oring = 8.00 I.D. , 11.00 O.D. , 1.49dia/cross section.

Mind you these are used but sealed well when I pulled them.

Thankyou!!! Out of the several threads and multiple PMs I've sent, this is the only response. THANKYOU THANKYOU!!

No problem. Just remember, these are used and new orings may measure a little tighter.

I just wanted to follow up on this thread with the o-rings I actually used.

I tried a 18.0mm ID 2.5mm CS NBR o-ring on the top slot and it looked too loose.

I actually picked up a kit (3 of the same kit actually =( ) from oriley's that had a bunch, all viton, just to try. The following ended up sealing during my bench testing at stock rail pressure:

Top: 17.1mm ID, 2.6mm CS
Middle: 7.5mm ID, 3.5mm CS
Bottom: 7.6mm ID, 1.6mm CS

Again, thanks for your help.

No prob.
BTW do you clean and refurbish these injectors. I had one stick on me and would really like toget them refurbished and maybe even enlarged if possible?

ALso could you give me a link or part number info to the kit from O-reily's?