Rotary Car Club - View Single Post - 20b Primary Injector O-ring Sizes?

Revelc · 10-19-2011, 06:53 PM

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.

10-19-2011, 06:53 PM	#5
Revelc 20b Tinkerer Join Date: Jun 2010 Posts: 15 Rep Power: 0	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.