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Statistics: Posted by Right hand drive — Tue Aug 31, 2021 12:43 am
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I played with emulsion on my 4150 carbs, and found that .014" and .016" work very well with E85.
My Dominator prefers .018" and .020".
With the 4150, the emulsion stack looked like this: blank / .014" / blank / .014" / blank.
With the Dominator, the emulsion stack looks like this: .018" / blank / .018" / blank / .020". The performance did not go through the roof, but it tightened up the consistency, and jetting was a lot easier to dial in.
I would suspect in this particular case with the big block and normal plenum volume, that .018" in 2 and 4 with 1 and 3 blank would work well to start.
Also, I would recommend that if you are not using a power valve, install blanks in the PVCRs. This isolates the mainwells from one another.
If your currrent blocks are for Alky you may have another problem if they have divorced idle. This tidbit also came from jmarkaudio and explained why I was having problems getting things to work. My 4150 alky blocks worked finally after drilling new idle feeds and blocking the bowl ports on my 4500 but cross channels were too large still when I reduced the banjo sizes so I started over with new blocks.
Statistics: Posted by 2x4b4fun — Mon Aug 30, 2021 11:45 pm
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