Here is a real-time video of an air-cooled 1600 VW block being bored for 94mm cylinders at Costa Mesa R&D Automotive Machine Shop. (949) 631-6376 Don't forget to 'Click' and SUBSCRIBE!
It made me smile when I saw the DPM being used! I have a DPM at home in my shop and need to open a case for 94’s. What sort of clearance is used on both of the diameters? .005?
at our shop we use a cutter that cuts one time .this vid takes to long to cut for 94s .by the time hes done cutting this case for 94s we would have all 4 cyl. holes done for 94s
These guys do quality work. People in comments that are criticizing don't have a clue. They do a better job on vw cases than 90% of other shops. You want hack work, look at mofoco in Milwaukee Wisconsin.
I am surprised thats good enough to make a good seal to be honest, not having a dig because if it works then fair play but using a shorter end mill and a bigger sturdier holder would make a hell of a difference to the finish and accuracy, also running the finish pass anti clockwise (climb milling) would help the finish / accuracy too.
Well for those out there who think his cutter is chattering are a little off. He is using a solid end mill holder and his cutter is running out a little. Also when cutting a magnesium aluminum casting the metal will be very hard on the surfaces so will have that sound when cut. It would be smoother and quicker to bore the holes but it is easier to do the step cut bores with the CNC program.
the center of the spigots remain the same?? seems like you did a mod to an engine that had a change of center to coincide with a new cam? or crank? fun watching thanks, John
It looks like you are getting a lot of chatter with that long end mill. How was the surface finish after the final pass? I can't tell from the video. Could this be done using a boring head or is there not enough clearance inside the block?
It made me smile when I saw the DPM being used! I have a DPM at home in my shop and need to open a case for 94’s. What sort of clearance is used on both of the diameters? .005?
The great things you can do to an engine never cease to amaze me!
at our shop we use a cutter that cuts one time .this vid takes to long to cut for 94s .by the time hes done cutting this case for 94s we would have all 4 cyl. holes done for 94s
These guys do quality work. People in comments that are criticizing don't have a clue. They do a better job on vw cases than 90% of other shops. You want hack work, look at mofoco in Milwaukee Wisconsin.
I am surprised thats good enough to make a good seal to be honest, not having a dig because if it works then fair play but using a shorter end mill and a bigger sturdier holder would make a hell of a difference to the finish and accuracy, also running the finish pass anti clockwise (climb milling) would help the finish / accuracy too.
doubelhead boreing bar for rawcuting and finish boreing bar to make it size
Could you possible do a video on how you set this machine up for cuts such as this?
Thanks
so what is the actual size(diameter) of the cut?,opening it up for 94mm pistons?..thanx
If stroke remains stock (69mm) the displacement changes to 1915 cc.
Cilinder volume = pi * radius^2 * stroke.
Well for those out there who think his cutter is chattering are a little off. He is using a solid end mill holder and his cutter is running out a little. Also when cutting a magnesium aluminum casting the metal will be very hard on the surfaces so will have that sound when cut. It would be smoother and quicker to bore the holes but it is easier to do the step cut bores with the CNC program.
Anti clockwise in this case would be considered "climb cutting" , the tool is always trying to dig in
Hi there great work, mathematically how did you figure out those dimensions for hole locations? Thanks
I use a co-axial indicator.
These machines are based on the same Chevalier knee mill on which Milltronics based their Partner series machines.
some coolant would help maybe?
the center of the spigots remain the same?? seems like you did a mod to an engine that had a change of center to coincide with a new cam? or crank? fun watching thanks, John
De show b9nitos recuerdos cuando altere el motor de mi vw
hi john does your machine not have helical interpolation it works so much better than just taking two cuts
regardes karsten from denmark
What material is that made out of? Why you running it at such a slow feed?
It looks like you are getting a lot of chatter with that long end mill. How was the surface finish after the final pass? I can't tell from the video. Could this be done using a boring head or is there not enough clearance inside the block?