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Old 04-14-2025, 05:21 AM   #583 (permalink)
Logic
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Join Date: Aug 2022
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Quote:
Originally Posted by pgfpro View Post
Once again, you're thinking the same way I am. lol

The only thing I can add is on my Passive Pre-Chamber is it already can run GCI. I just need to fine tune the tune. Now an Active Pre-Chamber would make my life way easier, but it comes down to an added cost for me. Here is the test I did by cutting the ignition that you can see where the red rpm line has a short dip that goes away then smooths out. It runs clean until about 3/4 of the way through where it has a little hiccup with a little knock then clean then it hit the rev limiter and shows the big spike in knock. This was not true GCI because I was running GEM42 fuel. So, I guess its GEM42 Compression Ignition lol.
A possible time (and money?) saving option might be to mod one of these tiny Toyan engines into an 'air' pump, rather than a modded diesel injector pump..?
ie:
A head replacement with one with reed valve plates (Send Cut Send) and rubber seals instead of piston ring/s.
With any luck one with a buggered head and/or cam etc may pop up on Ebay.

I'm just thinking that the independent (any gas mixture) and better filling/evacuating of the pre-chamber with COOL charge may unlock potential..?
Even/especially for GCI..??



Quote:
Originally Posted by pgfpro View Post
I'll share another photo to show an issue I'm having with heat that I need to test a new idea the fix that.
Pre-chamber overheat / pre-ignition?
Is it more due to pre-chamber temperature, or compression heat?
Don't spoze it matters which much.

Hmmm...
I'm seeing water cooled, copper (for thermal conductivity and that H2) pre-chambers with ceramic coated nozzle (and thread?) areas here?
Perhaps copper pre-chamber with stainless steel (lowest metal thermal conductivity) nozzle and thread bit ??

If water cooling, search:
120 radiator computer

Compression heat:
It would be a hell of a challenge to find/make a reliable, fast acting one-way valve for each pre-chamber nozzle!..?

If active chamber, a tiny nozzle might restrict inflow during compression..?

Ooh!! Or tiny Tesla 'one way' Valve!?


Quote:
Originally Posted by pgfpro View Post
I would Love to enter that FE event
YE! That's a 'wave' worth making. just for the fun of it!
I assume you still have those combo rear wheel covers and side skirts etc, for just such an occasion!?

Last edited by Logic; 04-14-2025 at 06:47 AM..
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