Chainsaw Repair

That was me.  Seriously nice saw. Thanks for posting.

Hey Scott! In answer to your questions I must first say that this is not a GTG toy or a stock class cookie cutter. It performs very well for what it is. All but a few of my customers are folks that make a living with their saws, so that is what I build 'Work Saws'. I can and sometimes do build ported run on the edge hot rods but only perhaps two or three a year.

This is as much performance as I can cram into a saw by using only off-the-shelf easily obtainable parts, that way should something go wrong you do not have to send it off to someone to get it repaired and wait. In the case of the one pictured it is mine. I just built it because everytime someone sees me running one like it they want to buy it, and that happens all the time. I think this is the fourth or fifth one I have built, all the others have been sold and have not come back. IIRC I had been running the one previous to this for about 3 years before someone just had to have it. I heat my shop with wood and I build furniture for a hobby so the saws get quite a bit of use.

I think that I have about 5-700.00 in this one. You can actually build these things yourself it is not rocket science. All it takes is a decent bottom end and the aftermarket parts (372BB Kit and the Stihl 064 piston). I look for raw gassed low hour saws as the base. I do all new  greater than 24000 rpm certified SKF or Nachi bearings, double lip seals, and just build the saw up from parts. I bought out a guy who was retiring parts inventory. This particular bottom end was a NOS 365 Special that he had been stealing parts off of for years. That is why it has the tag on it.

If you would like to build one I would be glad to help you do the work yourself.

Your biggest expense is going to be the four factory tools required to split the cases and put them together again.

Please make us a video of the saw. I would like to see the the 13800. in the cut.

Later
Dan

Very nice saw and it sounds like a tried and true combination.    Thanks for showing.

The saw has an OEM Stihl 064 piston which is 1.3 or so mm taller in compression height than the BB 52mm piston in the Hyway BB kit. (0.03937x1.3mm=.05118) now if you subtract target squish of 0.020 you end up with .03118 so I had to add a gasket of 0.030 in order to get to my target squish of 0.020. I agree with you about the variance however every one of these that I do is different, my suspensions are that the variances we are seeing is in the cylinder/piston sets not so much the saws. The Stihl piston has a two ring design and on this saw I deleted the bottom ring, which I don't normally do, I did it just to see what would happen.

The saw has a tank or so through it and the compression was at 180 before it got run now is at 194-5.