Chainsaw Repair

Well then based on that and what you said earlier, that piston would work with a plated 335 cylinder, correct? 

I have taken a couple of 335's that I have sanded down the cylinder base alittle to increase the squish and advanced the timing, modified the muffler, and widened the intake and exhaust ports a little.   You can also port match the muffler to the cylinder by using the gasket as a guide.   For the size and weight of those saws they kick butt pretty good.   I probably have the timing too far advanced because I do get some pretty good kick back on the rope sometimes but, once they are running they do run good.

54cc and 24" just dont go together IMO. 

Unless your cutting softwoods and full skip chain. PNW folks seem to do that.

Roger @3000 FPS  did you see any difference in your PP335 cylinder and the Predator cylinder.  The PP335 shows updating to the Predator part numbers.

Well then I guess I need to buy some 335 parts!

I put it together last night with the parts I had on hand.  It was a plated cylinder and two thin ring piston, I did not measure either so thats the best I can do for identifying them.  I didnt modify the ports in the bore, however I did open them up (both intake and exhaust) to provide better flow into the cylinder.  Baby steps.  I did flat plate the cylinder base and remove the base gasket, being that it was a used top end this gave it a huge boost in compression.  Lastly, I removed the screen and baffle plate in the muffler for now- I have a second muffler that I am going to really modify tonight. 

It fire up in two pulls, dead cold after being apart.  Runs suuuuuuper crisp, I just richened the L a tiny bit as it seemed to be idling a bit high and not dropping down quickly enough when I chopped the throttle.  It was just some shop run time as it was late and dark, but it seems to run really great- I am going to sink it into some wood today after work, I can't wait. 

Thanks for the part numbers! I will be ordering the 335 parts next paycheck and building the other bottom end I have.  I'm up to 6 saws, and I just gave one back to my dad.  The 335 will make 7...I think its safe to say I have CAD.  All Poulan/Craftsman, with one lone Pioneer P28 (Granddad's saw) hanging out as well.  Its green so it stays haha.