I am new to this group and have a question about fuel injectors. I have a Norma M20f Sport Racer with a built NA Honda K20a engine bored to 2.2L. I am trying to find new fuel injectors but am receiving conflicting information. The injectors currently installed are shown as injector A with a double O rings. Can someone please explain the difference between Injector A and B. The engine is making about 265HP and I think I need 445cc injectors. But the ones I am finding do not have the double O ring. Are these different style of injectors interchangeable?
Thanks for you help, Paul