Still have to set the roll pins to keep the plate from turning while boring the jug. Put the fixture in the big 4 jaw indicate the od, face off the outside. Flip it around face off the inside (where the jug will bolt) That hole will be bored to the diameter of the 590 extension, then drill tap the bolt pattern. This fixture will ensure the bore stays perpidicular to the base while boring. And the same stresses placed on the jug when bolted to the case will be mimicked here. The extension bore will be concentric to the tube of, so all that needs to be done is center the fixture, and press it agains the face of the chuck for set up. In the case the extension isn't centered on the bore i can still line up by checking the bore. Sent from my SM-G950U using Tapatalk
Little bit of progress. Hopefully Tuesday. I can finish it up and bore a 590 cylinder. Used some locktite retaining compound. Pressed the top in. Also put in 4 roll pins. Shouldn't move too far. Have to finish the through bore, face off the inside, and transfer the bolt pattern. Sent from my SM-G950U using Tapatalk
Got a pretty decent finish cut. Hone to .0005" then polish the rest. Going to finish in 1500 grit. Going to try bare bore bare piston. 590 jug at 50mm. +5mm over bore went from closed port to open lol Sent from my SM-G950U using Tapatalk
Since the 52mm sleeve didn't work too well in the 590 jug I decided to start the billet one. 4.5" cube to start Roughed in the intake/Ex port angle Then drill the hole that will become the bore. 3 step 7/8,1 5/8, and a 2" 4 flute core drill. Put the lathe in low and let er eat Used the junk base peace to transfer the bolt pattern, and scribed the outline. Started roughing to shape. Rough out around the ports, and above the ex. I can turn all the fins on the lathe. Well the top 5 fins anyway Sent from my SM-G950U using Tapatalk
Definitely outside the box! Cool stuff. Your bore to finally size for sleeve? Figure out a coolant system?
Right now the extension is sleeve size. Once I get the block roughed out I'll have to turn it down to fit the case. After I layout the ports I'll bore it for the sleeve. Going to do a plain hemisphere chamber roughly 50% Squish area. Transfers are just going to be straight tunnels, like the stock 590 jug. Then the sleeve will close them off. I can get a little bit more depth to em, but the base is only so big. Just fins for cooling. Here is a pic of the stock 590 tunnels. Don't think I will be notching them that far right away. Seems like they wanted a lot of volume... Sent from my SM-G950U using Tapatalk
Well I ran 3 tanks through back to back this morning. 24" light feels really good. Most was large cherry, bar buried and quartered. Saw feels like it is finally settling in. I'm pretty happy with it. Did about 1/2 a tank of piled limb wood. That is were the weight/balance really shined I haven't cut that much in close to 3 years lol Sent from my SM-G950U using Tapatalk
Well got a bit more done on the fins... Ain't gonna be purdy. Getting a ton of deflection on the bit. Not staying very uniform. Ought to do the job still. Tip: Cut the fins first next time.
Going to have to start hand carving soon.. Might better order a spare cable for my grinder lol. Thank you sir.
