I recently purchased bosch 50 lbs injectors (550cc). The guy I bought them from said that the fuel rail needed slight modification but he didn't know exactly what to do. So I tried installing them tonight and they fit nicely in the lower bushings, but the top o ring barely slides up into the fuel rail hole enough to seal. So my question to anyone that has used these is, do I enlarge the holes in the rail and use the large o rings that came with the injectors or, should i shave down the plastic on the injector that keeps it from sliding into the rail and use the stock o rings?

I actually got it running with no leaks by just using washers to space the rail up but im worried that it will start to leak because the o ring just barely slides into the hole.

any information about this would be greatly appreciated.

 

Post some pics, I am interested.

 

this sounds similar to my MSD injectors. I just shaved down the plastic bushing and used a smaller O-Ring on my MSD. Did not modify the fail.