I was set back yesterday pretty substantially when my fuel rail system did not work out. I cleaned up the holes, replaced the o-rings, etc to no avail. So I am going to a common rail but ran into the exact problem that caused me to look at "alternative" fuel rail configurations, namely I either have interference from the thermostat housing or with the throttle body. I simply cannot get a straight line to fit.
I got word the guy giving me a remote mount automotive electric water pump has put it in the mail on Friday so I yanked the thermostat housing off the engine, removed the intake, chiseled out the injector bungs, re-installed the intake, hung the fuel rail in place with injectors installed and bungs hanging from the injectors into the intake, and put a fresh coat of JB quik-weld on it. I now have a second coat of JB quik weld on it to make sure it seals and holds and will clean up and re-paint the intake this week.
I ordered up some 1/4" aluminum plating and will make a water outlet block off plate and a water pump hole plate and bolt a water outlet to the pump plate. I've already knocked out the two freeze plugs and installed the ones I welded nipples onto. Going all out on the external water pump now.
Rebuilding an OHC Pontiac 250 with EFI and a Turbo