Relocating CIS injectors for more power....
Relocating CIS injectors for more power....
(OP)
After talking with a friend, we are toying with the idea of essentially spacing the injector housings to move the injector tips back out of the middle of the intake manifold/port where we are pressuming they are causing a considerable air-flow restriction at high RPM (up to 7500+)
Since this is a constant injection system, and the fuel basically puddles on the back of the valve until it opens anyway, we can't foresee how this would hurt anything. The spray pattern and cone is plenty strong enough to spray this extra distance.
We are guessing, at worse case, this may make idle slightly rougher and possibly screw emmissions up possibly?
Ideas? Suggestions?
Since this is a constant injection system, and the fuel basically puddles on the back of the valve until it opens anyway, we can't foresee how this would hurt anything. The spray pattern and cone is plenty strong enough to spray this extra distance.
We are guessing, at worse case, this may make idle slightly rougher and possibly screw emmissions up possibly?
Ideas? Suggestions?





RE: Relocating CIS injectors for more power....
If you really really are having air flow problems because the injector is in the way, just move it out of the airstream, but keep it close to the valve.
RE: Relocating CIS injectors for more power....
Interesting, I hadn't thought about this aspect- the proximity of the injectors and how it effects evaporation during transients.
Can I infer from what you are you saying that generally the closer the CIS injector to the intake valve the better the transient fueling?
If so could you please take a look at this thread and comment?
http://www.eng-tips.com/viewthread.cfm?SQID=66813&SPID=71&newpid=71&page=1
Bascially I want to mate port throttles with K Jetronic and am worried about transients, but if Injector proximity is a varaible I can vary this and area compensate the port....
RE: Relocating CIS injectors for more power....