soarrich
Posts: 2502
Joined: 2/1/2002
From: Middletown,
NJ, USA
Status: offline
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quote:
ORIGINAL: airlyons
Here's a couple of thoughts I have that could be COMPLETELY wrong but I have gained from endlessly reading tuning threads on forums. (ie if I'm wrong please chime in!!)
1) the low effects the high - their combined fuel flow adds up to the resulting RPM
2) the High doesn't effect the low - only the low needle supplies fuel until you cross approximately 1/2 throttle
3) all Walbros work on these same principles (?)
I would agree with all of these. I got so screwed around once I just about had the high-speed screwed all the way in and my engine pretty much ran OK, just not right, the low speed screw was out 3~3 1/2 turns. BTW, this was not on the 366GT, it has run like a top from day one, I thought it was impossible to miss tune this engine, it seemed what ever I do to it it runs great.
quote:
Hey Soarrich... that's a very interesting technique for tuning... so should I assume that you would in fact tune the low end first using your technique, and then tune the high end for peak rpm?
Now my question... on the 366gt instruction sheet it says the high effects transition - that would seem to debunk the above principles!!!!????? Any thoughts????
Chris
Chris
I put these two together for a reason. My technique is an adaptation on what I learned on a phone call with Scott, he knows engines, debunk is a strong word. The high speed needle may have some effect on the transition, but I haven't seen it. My friend imports the MT line so I've got all of them many times over and have used this technique for tuning them for me and others, so I know it works, I don't even speed the engine up above 4000 rpm until the low speed needle is set. My 366GT has been the standard for all my other engines, so far the 366GT is the BEST engine I own. If you where to have one engine, the 366GT is the one you want. 
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Rich Border
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All Forums >> Glow Engines, Gas Engines, Fuel & Mfg Support Forums >> Gas Engines >> RE: Brillelli 366GT *60cc* 
RE: Brillelli 366GT *60cc* - 
