I'm just welding the shit right out of them
I am using enough heat to melt the aluminum, I tried welding them without melting the metal and it would just fall apart.
Bolting them down is a good idea.... I think.
Although believe it or not, they always taught us that over clamping increases warpage. The forces at work trying to warp something when you weld it are in place whether you clamp something or not. When it's unclamped it will just go to the same place it wanted to from the get go.
With steel the key is tacking everything in place and learning which parts to weld in what order so the forces balance each other out. I'm real good at doing that with steel.
Aluminum is such a different animal though that bolting probably works good, it will streatch (streach?) so much easier when it gets hot. I've actually thought about draining the oil and just heating up the right side cover by the kick start shaft hole quite a bit while it's bolted down and see if it kind of stress relieves it.
I'm good at draining oil...not so good at putting it back in.
It's 1:30am and I just finished up in the shop. Bikes are ready to go. Mary's bike is like a timex, freakin oil comes out with not even a hair in it ( I strain everything). Valve adjustments still right on the money, no sign of tensioner wear at all. The experimental tensioner in my bike seems to be working great too.
Whadda ya think about the pistons? Seems like they've pasted the final shake down tests. Probably about time to re-order. I'm thinking I should include a set or two of 57mm and punch these babies up to 209cc.
I'm going to try to get the price down to around $200 a set by going back to machining the plug notch myself... I think they were charging me $35 a piston for that! So for I'll order 2 sets of 56mm for Mary and I, 1 set for you, at least 1 set of 57mm, 1 set of 56mm for Hiroshi Murata, at least 1 set for George Decamp, Chris Stein has said he wants a set...probably around 20 pistons all together..so I gotta come up with about $2000. Or a $1000 deposit anyway. I'll talk to Cometic about a batch of head gaskets in 56mm, and I want to get them to make copies of the oil pump, left side cover and right side cover for sloper 175's...that way we can buy brandy new vert CB175 gaskets sets and just substitute these three gaskets.
And did I mention...blah blah blah, and yada yada yada?