Any air cooled engine is a piece of cake. 1,5 hours in and out, unless bolts break..............
But, they don't budge on 80$ an hour labor and maybe they want 400$ just to rebuild the crank?? Who knows.
Then there are gaskets/ o- rings and whatever else is still available, maybe 75$??
Then there is a bore,hone and a piston kit, maybe another 150-200$??
Main bearings, every tranny bearing (is that in the quote?) another 200$ or so.....
Couple hours to split and re-assemble.
400$ to break it down like and merely diagnose the problem like Jeff said is WAY too much...............
I'd imagine it's closer to about 1000$-1200$ to rebuild that thing back to the 25yo reliability.
Your crank just needs the rod kit, the halves are good. Any experienced shop can press in that rod pin and true it up in an hour IMHO, but I have seen flat rate charges of about 75$ to replace and true a crank without parts. Then you add the cost of the rod kit.......
It's tough for you guys. I've won entire NOS 350X motors for 730$, and I know that there apples and oranges. But 2000$ is far high IMHO........
I'd do as much as I can myself, and let the shop rebuild the crank and bore the cylinder if needed. Not to mention that 2000$ doesn't even blast and PC or paint the cases!!
You can by a 20 ton press to install bearings for 200$, V blocks for another 15$ and a decent magnetic base indicator setup good enough for what you do for another 50-100$
I like investing in tools rather than paying for labor myself.....................
All our government does is distract us while they steal from us, misspend our tax $ and ruin our country