I have a JDM B16A engine in my integra. I bought some DSM injectors for the engine but when I put the stock rings on the new injectors, they do not fit back in the slot. The new injectors have a bigger diameter and the rings stretch when you put them on the injector, causing the injector not to fit back down the hole. What should I do? Different injectors, different rings?

you talking about the top or the bottom ring ?

I am not talking about the o-ring but the big ring at the bottom. The big thick one.

use the honda rings on the upper. dremel the bottom honda rings until they fit.

try this.

http://www.geocities.com/speed_phreak_88hf/how2dsm.htm

Will that cause fuel to leak out the ring or no. Doesn't that keep the pressure inside. I do not know

you see how snug the oem honda injectors fit in the oem rings. well, dremel it till it feels the same way with the dsms.