getting fuel to the injectors

E30GoDz · #1 (**permalink**) 11-18-2003, 12:39 PM

Im running some secondary injectors for my turbo M20 and am looking for the best way to run a hose from the fuel rail, to the fuel injector top...I'm wary of pushing a hose on top and clamping it as 45 PSI (3 bar)is a lot for a clamp to endure...is there a special fitting somewhere that will fit the top of the fuel injector?

E30GoDz · #2 (**permalink**) 11-22-2003, 10:19 AM

ok i found what i needed...but its ****ing 110 bucks

http://www.msdignition.com/fuel_9.htm

...anything else i could use?

Phunkatek · #3 (**permalink**) 11-23-2003, 11:36 PM

Cool I've been reading about this being done for competition engines with the outboard injector mounted within the intake trumpet- how/where do you have yours mounted? Also, could I ask what size you are using and what kind of fuel management?

E30GoDz · #4 (**permalink**) 11-24-2003, 01:21 PM

maybe picture's will do better justice:

the injectors form a VERY tight fit inside those fittings.
i plan on using wither 19# injectors, or 24# injectors as i can get both for free, its just a matter of which i get first.

I will be using an SMT-6 piggy back unit to control the this set of injectors

matt325is · #5 (**permalink**) 11-24-2003, 02:49 PM

Wow, thats going to be kinda tough to do easily. Since the injector bungs aren't the same width/angle apart, you wouldnt be able to fit a standard type fuel rail (1 per side) with a fitting for 1 hose. I have yet to see fittings that fit on top of injectors, mainly because they are pressure-fit. Your best bet might just to clamp the fuel line to the top of the injector.

I just put in some 32lb/hr injectors and tuned the fuel map down low so its not idling REALLY rich. They also supply more than enough fuel up top. Though, I know your mentor suggested you have secondaries.

matt

Phunkatek · #6 (**permalink**) 11-24-2003, 02:53 PM

holy crap matt your 325 looks almost exactly like my friends car- only a bit nicer

E30GoDz · #7 (**permalink**) 11-24-2003, 04:06 PM

well i found the fittings, they are from MSD about are about 120 bucks for 8 of them!!!! JEBUS. If it was up to me, i would just upgrade the primary injectors..but mark is more of a "my way or the highway" type of guy, and i dont know where id get free dyno time and tuning anywhere else ; ) He actually suggested that i find a smaller fitting that fits very snuggly over the rubber o ring on top and clamp it down with a spring clamp or something or nother, doesnt sound like a bad idea, i may try it out, if that doesnt work ill clamp a hose on top of it.