I'm lost @Tor R
I think the HDA body is physically just a little larger. If my memory serves me correct the bore in the main body is too, hence why everybody wants them on the little saws.
Personally I am not looking for the fastest cookie cutter out there. Going bigger carb can add issues. My saw runs better with the Zama than it did the HDA. Could I have made it work with the HDA, sure. To me it's not worth it.
The saw is plenty strong. It was bought originally by
@Genius. He ran it stock for years and then sent it to
@Termitebuffet. The saw is called "Stitch Maker" as a joke on Ross's natural gravitation to farming accidents. I did NOT build it. I know Ross said he never liked the 199 on it and I agree. If
@sunfish gets good results with the HDA, I am not going to argue. This is my second and last 346xp. Great saw... and all I really need.
If some of the better builders with lots of experience would like to chime in I value their input.
Here it is freshly ported... you can see how it pulls all over the rpm band when heavy handed or self feeding. It's pretty broad for a 50cc saw.
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