General Category > Bike Builds, Rebuilds And Restorations Only
68 v700 (GC)
GMC28:
Ah yes, I should just do that, though I'm curious to see inside anyway. Will start easy/quick for now with the magnet.
GMC28:
Well, very lightly magnetic cylinder wall. So light that I figured it was zero with only a smidge of wishful thinking tugging at the magnet, but then more slowly and carefully slid the magnet across face of piston which was the true “zero” pull, then just at the edge of the piston it would just slightly jump to the cylinder wall, barely, but consistently.
So appears to be Nikasil?
I’ll still pull things apart later for other reasons, but the chrome question is hopefully leaning in the right direction.
Cylinder head is very “factory clean” looking, while the cylinder looks to have been cleaned up then painted. No distinctive markings on it, and the paint doesn’t look like a hack-job, so i suppose that’s ok.
Antietam Classic Cycle:
--- Quote from: GMC28 on November 09, 2025, 10:54:31 AM ---Well, very lightly magnetic cylinder wall. So light that I figured it was zero with only a smidge of wishful thinking tugging at the magnet, but then more slowly and carefully slid the magnet across face of piston which was the true “zero” pull, then just at the edge of the piston it would just slightly jump to the cylinder wall, barely, but consistently.
So appears to be Nikasil?
I’ll still pull things apart later for other reasons, but the chrome question is hopefully leaning in the right direction.
Cylinder head is very “factory clean” looking, while the cylinder looks to have been cleaned up then painted. No distinctive markings on it, and the paint doesn’t look like a hack-job, so i suppose that’s ok.
--- End quote ---
Sounds like Nikasil.
Turin:
Lucky Dog!
GMC28:
--- Quote from: GMC28 on November 06, 2025, 10:36:04 PM ---Touché….
Same list of things was in my head but i had also assumed a lot more engine work, which may now play out differently (better). I knew i’d need to pull a head to see what i’ve got, and may get to that sooner than i had planned. After charlie pointed me in the right direction, i did check the cylinder base for markings, but didn’t see anything. maybe nikasil, or maybe i’ll have to pull them to address the chrome.
Rodekyll has just shipped me a fender, to get things started. And stopped by my painter to check on his schedule and plant the seed for some upcoming work…
--- End quote ---
Revised plan may play out to do basically just that... clean it up, gather a few more parts, burn some money on paint work, then ride it a bit next spring before deciding whats next.
That said, if my friend (PO) can't find the key, anyone know which key blank type these would take, so a locksmith could do his thing? I'm assuming its a stock barrel, but not sure
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