I'm have flashbacks from the late seventies and eighties. A guy we knew road racing a 911 gave up after his second flight. 185mph in a naturally aspirated 911 taking flight lessons is no joke. 4140 liners with 327 pistons, shhhh. So the motor lost countless bottom ends due to 325 oil temps. And then the aha moment came and Flight lessons started soon after when they liquid cooled the heads. Slick too...Holley blue pump with a 6" heater duct right through the passenger's side of the car with a 600 Kawasaki rad in the firewall behind the driver. What's good for a Mechart stroker crank 911 and holey light weight rods goes double in the bug powered sand rail where Bob lived and built the motors. We never saw a 6 cylinder Porsche motor ever catch that sand rail with those 4140 holes and 4" slugs with wet heads. Fun times.
Old school only....and boil that gunk off in an old crab pot on the bbq. Works for me. Worked good on old dirt bike motors to.Got some starters serviced this weekend - it took a lot of work. I had to use wire brush attachments in my air die grinders to get all the gunk and pulverized sawdust out of them.
I got lucky a few years ago and got in on a buy for some re-pop starter handles that the kart guys were doing. They're good quality.
I don't know about you guys but I've always liked the old school McC logo more than the newer logo. Whoever designed the new logo was a complete twat.
Gaskets are the easy part imo.I had to make some new SP-style exhaust gaskets. This is the earlier large-style that I'm a fan of. The later style only covered the front two exhaust mounts and the exhaust port.
As we all know, parts are getting really hard to find for these old beasts, so we'll have to make more of this stuff by hand or have re-pops done.
I still use that paper. Best stuff around since the eighties.Got'em mounted up on the saw that I built earlier in this thread and the big-bore saw I'm building for myself currently. They're not perfect but with a couple hours of heat
and vibration, they'll settle right in. The paper I used for this is high-heat thick gasket paper available at NAPA. It's stiff and more difficult to work with but it resists heat very well. In fact, I threw some small pieces on a brush fire I had going next to the drive way today and it took several minutes for it to catch fire.
Good tec there.I wanted to show you guys some differences between the starter shrouds. I think the later style is on the left and it has cast-in threaded bosses so you don't have to mess with
epoxying in retainer nuts. They're also a different "thickness." I think there was a post about the early saws not having enough air circulating around the engine so the shrouds
were changed along with re-designing the cylinder so that it has more and thinner cooling fins.
He should have ran synthetic oil.One final detail - on the left is the big bore saw and on the right is the standard SP I built earlier in the thread. The big bore saw has the wide handlebar that was designed
for the later saws that came with a chain brake. It uses an extension bracket to mount to the tank. Guys that have milled with 125s like the wider handlebar a lot more, as
it provides more room for accessing the clutch cover. I knew a guy that was using 125s to build a log cabin in BC years ago and he would run the wide handle with a cut-down
clutch cover. He wore out three saws by the time his cabin was done.
Heard a whisper in the wind about this the year or there about I ran your 105 in TN. Makes sense now about the burn some got and were pretty pissed.
You have to find some big wood to get that/those thing warmed up a bit. We will all be dead before you get the rings seated in :-/
Since you mentioned it when I resleeved my one 125 with an iron cylinder I've yet to run it long enough to seat the rings .In this part of the country it's rare you get a large enough tree to give those things a good work out . I may pull it off the shelf this winter to cut up some 36" oak rounds from a pile a tree trimmer dropped off .
It sounds good. Now it's ready for a 60 to break it in lol.
