David Young's latest activity
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David Young reacted to Dolkitafreak's post in the thread Echo 490 to ported 4910…to cs-5484 with
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That was mainly due to my head design, performance was the opposite. They have a great timing curve until about 12k where they start... -
Flat, get the charge moving, it's gonna do something right or wrong. Have not done extensive testing to prove/disprove anything on...
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David Young replied to the thread Echo 490 to ported 4910…to cs-5484.Do you still have these two saws running? I remember Ethan found that he had to retard the ignition timing when he started squeezing...
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In regards to all the fines that made it into the hybrid, I think my modified air horn was to blame. If you look close here you can see...
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Here’s a bit of fun. Turns out the trigger travel was just maxing out, the linkage wasn’t bending enough to matter. So I extended the...
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I’m asking about the Compression because my 361’s actually require a timing retard to not pop. Other people, that dont have the same...
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Actually, I also ground a bit off the spark plug. About 3mm.
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Here’s how she sits now. I think this is stock appearing? Too many muffler outlets? Shindaiwa 500sx air filter. A stack style filter...
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Last one for tonight. The Muffler. It turns out to be surprisingly easy as well. The original muffler is folded together. Just grind...
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But it all fits. The best part is the throttle and choke linkages are a near direct fit! You have to take the cable fitting off the...
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Something I forgot to photo is the jug spacer. 357 is a 34mm stroke, 4910 is 33mm, but either the deck is lower or the con rod is...
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98% of the time I don't mess with the intake. Just transfers and exhaust.
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Back apart. I pulled numbers again, to be sure. 77.5/110.5/126-132. I guess I read the exhaust wrong. Based on the piston I think...
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It would be my pleasure sir.
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Yeppers. Bored it to .001" clearance.....then honed it with a micrometer hone to .005 clearance.
