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Old 12-23-2014, 09:30 PM   #1
Grillman OP
Joined: Sep 2009
Location: Flatlander
Oddometer: 25
R80 cylinders with r60 heads

Looking for some information and knowledge about fitting r80 cylinders on a r60. Have looked everywhere and have found nothing. I find it hard to believe that nobody had tried this. Maybe there's a reason there is no info, but if anybody has any I'd appreciate it.
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Old Yesterday, 02:16 PM   #2
Mercury Freefall
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Joined: Sep 2010
Location: East 10EC
Oddometer: 59
My '73 R75/5 has an '84 R80ST top end on it (carbs & all). I can't say what was involved in the swap cause it was that way when I got it. I found out later. I don't think the PO knew. It has been very reliable for the last 18 or so years and 50k+ miles. Tho it does leak oil just enuf to be aggravating.
It's not an R60 but they all have the same stroke. You need to find out if the bottom of those jugs will fit in the holes in your cases. No doubt, it's been done.
Adventure is when everything goes wrong. That's when the adventure starts.
- Yvon Chouinard
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