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Old 01-23-2021, 09:14 AM
my427cobra my427cobra is offline
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Join Date: Mar 2002
Location: arroyo grande, ca, ca
Cobra Make, Engine: NAF 427
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Default EFI 8 Stack injector alignment squiggily tolerance?

As I continue to assemble, modify and redesign my 8 stack injection system (pics to follow later) I have a question about the injector alignment tolerance specs.

In other words, how perfectly aligned do the injectors have to be between the machined bosses in the throttle body and the machined bosses in the fuel rails?

The injector o-rings tight as they are in the machined bosses, are still a little squiggily.

I would like the fuel rails to be closer together, esthetics and packaging, which would put the injector boss in the throttle body about 1/4" off center relative to the injector boss in the fuel rails.

It doesn't seem like a lot and as I pore over various pics and installations of 8 stack systems here on this forum it seems (maybe camera lens parrallex) that the injectors on some are slightly canted (misaligned) between the bosses in the throttle bodies and the bosses in the fuel rail.

Any thoughts or expertise on this?????

Thanks for your help.

Cheers
Greg
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