Fun little science experiment! Great work Royce. Thanks for sharing.

Heber City, UT (15 mins outside of Park City- basically it's in the mountains)

55 Effie

RB, that setup looks interesting. great job with "tooling" on the Y with EFI.

thanks for sharing.

post up video if possible.




This ain't no L-Kamino!

Frank I bought the caps that adapt injector to 1/8 pipe





http://www.ebay.com/itm/EFI-HILBORN-CONVERSION-COMPONENTS-THROTTLE-BODY-BLOWER-/220804064676?pt=Motors_Car_Truck_Parts_Accessories&vxp=mtr&hash=item3368f2a5a4

Royce,

        How did you retain the fuel lines to the injectors? I can't tell from the photos. Interesting that the injection filled in the low spots in single plane torque numbers. Kind of indicates the problem (with a carb) is poor fuel metering at those rpm's. 

Frank/Rebop

Bristol, In ( by Elkhart) 

Great work needs to be acknowledged, and is reconized by Us excaped Pennnsylvania Boys...

Brother and I own/operate 1957 Ford Fairlane 312/4x2 and two 1963 Falcons 302 rollers carburated 600cfm, FE427 sitting in shed..

Charlie, this single plane intake has been tried several times with a carb, but was not a good performer.. No doubt some of the gain was due to it's better airflow than a dual plane intake, but because we know a carb won't work with this manifold, the fuel metering is the key. If you look at the torque curve, you find what you would expect. A dual plane shows up better at lower rpm, but the single plane shines from 4000 rpm up.



Ted, This engine is going into a 55 Bird, but probably not with the injection

Good job Royce.  Thanks for sharing.  What are the future plans for this engine?

Lorena, Texas (South of Waco)

Perhaps you should dyno that setup with a carb to be sure that the intake isn't causing the avg hp improvement. Also, if the hp increased at a given RPM, then the torque had to as well. So the torque curve is probably quite a bit different even though it averaged the same.



I wish they would make an ez efi that will work with boost!


Lawrenceville, GA

On Friday Jerry Christenson and I dyno tested the port injected 292



The results were pleasing. I had tested this engine in 2010 with a Blue Thunder intake, 750 carb on E85 fuel. It made 323 hp at 6100 rpm and 304 lb ft of torque at 5000 rpm. It is a 9:1 compression bone stock 292 bottom end with G heads sporting a street/strip porting job. It has a Cam by Comp with 230 at .050 duration .



After modifying one of Jerry's single plane hi rise intakes to accept port fuel injectors, and hooking up the EZ Efi computer, I was curious how power numbers would look compared to my best carb package.



The engine started immediately and settled down to a very nice 800 rpm idle. We warmed it up and did some simulated cruise pulls to check air fuel numbers. One of the very nice features is that the EZ EFI lets you select air fuel ratio for idle, cruise, and WOT. I put the WOT ratio at 12.5 just to be safe. With no other tuning the first couple pulls essentially duplicated the carb numbers. The engine AF looked really good, with the EZ EFI computer in full agreement with the numbers from the dyno sensors. I decided to lean it to 13.5 and see if it liked that. It did, and after a timing adjustment to 31 degrees we got a best pull of 328 hp at 6100 and 304 torque at 5000.



Very modest improvement from the best performance with a

carburetor.



But wait there is more!



The ave horsepower changed +17 between 3600 and 6200 rpm vs the carb. That is significant. Torque ave remained the same. Studying the graphs revealed the the injection fixed the torque dip commonly seen in the mid range rpm on carbureted Y blocks,thus pulling up the ave hp.



I also think that Jerry's long runner single plane intake helped midrange torque vs the dual plane. In summary, I think my experiment is a success. I really like the EZ EFI system It is simple to set up, and simple to tune, but still sophisticated enough to do a good job of fuel management. Plus it is very versatile, and can be adapted to almost any engine/manifold combo.

Hmm... EEC with EDIS got no worries with dizzy. It's not hard to bolt on trigger wheel to balancer if other option is dizzy's total modification.


Hyvinkää, FI