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The injection controller will be the Real World Solutions EC2. It does
stage. No, you aren't wrong. That is what I want. It's not overly
complicated when you dont have to build it from scratch.. thats why Im
using the stock TB. The only thing I am having to fab is the runners
and two injector bosses.
I am using stock fuel injector ports on the primaries (which are in the
block). Those are less than 2 inches away from the primary intake
ports. I will not be moving them.
As for secondary positioning, how far back can I go before I have to
start worrying about the fuel charge not being inducted all the way
into the secondary ports? As in... the fuel charge shot into the
secondary runner (when secondaries are active) gets sucked all the way
in on THAT intake stroke, and not, lets say.. the next one...Or are you
saying that doesnt even matter? If injectors do better farther away
from the port/way upstream, why are they not like that in the stock
config? Several other EFI engines I've seen appear to inject RIGHT
before the intake port (Noticed while shopping for intake parts), not
way upstream...
It seems that the folks who have difficulty idling at low power
smoothly are the ones who 1) dont sequence their airflow into primaries
first, secondaries only at higher power... and who have their injectors
20 something inches away from the ports. Thats just an observation I've
picked up over the past year... and maybe its mistaken.
Dave
Ian Dewhirst wrote:
Hi Dave, I don't know the details of your
injection controller but I assume that you have the three barrel
throttle body because you want to open the primary first and have the
secondary injectors staged with the secondary barrels, that seems kind
of complicated so I must be wrong. At any rate I don't know that
responsiveness is going to be an issue unless you really work the
throttle. You would get better atomization and free charge cooling if
you moved the injectors away from the ports as far as possible. Best
of luck, looks good -- Ian
Responsiveness. . The stock secondary injector bosses are in the 6-8"
range... I'd have to measure to be sure.
Dave
Ian Dewhirst wrote:
Hi Dave, why do you want the secondary injectors as close to the block as
possible? -- Ian
Dave wrote:
..... I want to put them within 6 inches of the block if at all possible,
closer the better, but want them to be in a relatively cool location.
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