Factory Direct-Port Fuel Injection, Chevy 409...from the '60s

[Ace-Garageguy]

While researching front timing cover configurations for my blown 409-powered M/SP Corvette build, I came across this OEM mechanical fuel-injection developed by a Chevrolet supplier back in the early 1960s.

Pretty cool.

Sorry, but I can't post any shots to wet your whistles. The site has copy-block on the main page and I can't be bothered getting around it.

https://hotrodenginetech.com/factory-409-fuel-injection-no-really-2/

 

Edited August 31, 2019 by Ace-Garageguy

[Deuces]

I can't click on to it..... ?

[Ace-Garageguy]

12 minutes ago, Deuces said:

I can't click on to it..... ?

Then copy and paste the link into your browser. Takes 5 seconds.

Or left-click it, blue it, right click and click "open in new tab". Takes 3 seconds.

Edited August 31, 2019 by Ace-Garageguy

[afx]

[Can-Con]

[Deuces]

Thank you A.F.X. ??

[Ace-Garageguy]

Thanks fellers.  

[Deuces]

And thank you Can-con!.... ??

[Deuces]

Thanks Ace for starting this thread.... ?

[Richard Bartrop]

I bookmarked that site.  Some pretty nifty stuff

 

[gtx6970]

That's a pretty interesting configuration.

 

I know Chrysler tried mechanical FI systems in 1958 ,  Chevrolet had it in 1957 , Think Cadillac ( or was it Pontiac ) tried it as well in the late 50s. Corvettes had it again what was it 1963 or 64 ?

Wasn't aware anyone tried it again till late 70s - early 80s time frame.

[Ace-Garageguy]

3 hours ago, gtx6970 said:

...I know Chrysler tried mechanical FI systems in 1958 ,  Chevrolet had it in 1957 , Think Cadillac ( or was it Pontiac ) tried it as well in the late 50s. Corvettes had it again what was it 1963 or 64 ?

Wasn't aware anyone tried it again till late 70s - early 80s time frame.

Chrysler's (Bendix) system was electronically controlled. There was a box of resistors and diodes and capacitors and relays and other goodies that were in effect an early ECM. The same parameters were monitored as in today's systems, and interpreted into signals that controlled injectors that lived on a fuel rail. Though not successful in that configuration, it formed the basis for the Bosch solid-state systems that appeared later.

The Corvette (Rochester) unit used more of a fully mechanical, more-or-less constant flow system, sharing general functionality with the later Bosch CIS systems.

The unit shown above on the 409 is a fully mechanical timed direct-port system, similar to what would later be found on the early Porsche 911S, several Mercedes models, etc.

Three very different systems...which are different still from the original mechanical Hilborn system (though the Hilborn is similar in some functions to the Rochester).

Edited September 1, 2019 by Ace-Garageguy