06/04/2023
Injector Plate
When I first got into cars 6 yrs ago or so I was very new to working on them. Had only changed my own oil a few times and a set of brake pads. My first LS turbo swap took me 5 months. During the next few years of learning how to tune for boost and why certain things need to be monitored or changed when in boost. This of course pulled me down the rabbit hole of learning all the ways to boost a car and why. Including the benefits of blow thru carbs...
My brother bought an rx7 during this time that had a 12a rotary engine in it. The engine had issues so he swapped in a 13b rotary engine but wanted to keep it carbureted. He bought some parts and a short while later I was researching everything about how Holley carbs work so we could get his rotary to run on one. I ran into a bunch of write ups and forums on how to build a blow thru carb. I decide to buy a few carbs to rebuild and all the parts to make them blow thru. I dabbled in building a few but never put them on a car yet. I was pretty far along learning to tune the efi and was fairly competent at it.
I drive truck for a main job. Gives a lot of time to think. Listen to podcasts. Listen to seminars. Research any topics at night before bed. And call people who may know the answer to questions I think up.
I decided I wanted to have the benefits of a blow thru carb with the control and data collecting of EFI. I’ve been obsessed with this idea since I heard about the issues Nhra pro stock and formula1 had switching to efi. The injector plate idea is not a new one and have been used on roots blowers fairly commonly for a while now. But from my research they all had cylinder to cylinder distribution issues and the engines do not like to idle or operate at lower rpm’s. I figured out a way to fix that.
With a bunch of bouncing ideas off my buddies in phone calls, building a prototype, dynoing the prototype, getting my drawings converted into cad files, redesigning the prototype and fuel rails to accommodate all injectors, finding a cnc operation that would take on my project,….
We now have a proven working ready to manufacture piece! I’m very excited to get a bunch of data on these plates and get some laps in the R&D cars this summer to make sure nothing was overlooked.
The goal of the plate is to be able to bolt this on in place of any 4 barrel carburetor and be able to use any efi ecm of your liking to control the fueling/ignition on your vehicle. With boosted vehicles the need to no longer run an intercooler is also a huge benefit.
Let me know if you want to know more.. I didn’t want to bore the general public with the nerdy stuff.
Thanks to
A&R Machining
Lewis Machining
Borman Stainless Steel Works
Keith at HP^2 Engine Dyno
Fluit Bros Customs
