I’m honored Steve Unruh.
If my memory serves well since I haven’t worked on the gasifier since 2012…
Yeah it has drop down Jay’s (1" pipe maybe?) which are adjustable for various heights with couplers twards the top of the hopper. The nozzles could be threaded in at different lengths and sized accordingly with pipe caps drilled to size. (Keep in mind that the pictures provided is of various stages of our build and not of the final product, its just ones that’s has survived from 5 years ago)
We concluded to use interchangable throats for a good tuned flow with different engine demands. But that’s mostly where we left off for the gasifier. Figured that we should leave it to put what we learned into a more stable build with no weekend rush job haha. I really love how it’s like a shrine to our first try to woodgas, and how it worked better than we could imagine. Even tho it had it’s hiccups. And we ran a straight six that was 30 years past wore slam out anyhow.
Ohh we made a bracket to adjust timing by hand and welded adjustable bump stops to both extremes of retard and advance, checked out with timing light and the works when setting the bump stops. So we just fine tune somewhere in the middle as we drove and knew we weren’t going to go way out of range. Worked well on that end.
The carb was made from a junk, gutted out single barrel, hole drilled the side to accept the woodgas piping and pow, did the job. Had throttle, choke plate to adjust vacuum on woodgas and did fine. The quick warm up butterfly is what I think your referring to, it was rusted out and removed before this project went under way, and no egr, So that was easy. Never backfired from high intake temps. Which is weird cause the two manifolds are on top of each other. But hey, I’ll take what I can get.