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Old 10-20-2011, 10:29 PM   #91
wmax351 OP
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Quote:
Originally Posted by wirewrkr View Post
Early (70-75) jugs I'm measuring this: see picture
76 and later are running around 18mm even or thereabouts.
I compared several original jugs. I have many several.
I will definitely measure that. Thanks!
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Old 10-21-2011, 01:15 AM   #92
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I am suspecting that ww just figured it out? At least part of it?
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Old 10-21-2011, 05:10 AM   #93
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And nitpicking a tad, 'Wire meant 18cm, 180mm (not 18mm). 117.6mm to be precisely as-read.

FWIW. :)
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Old 10-21-2011, 07:51 AM   #94
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Originally Posted by Bill Harris View Post
And nitpicking a tad, 'Wire meant 18cm, 180mm (not 18mm). 117.6mm to be precisely as-read.

FWIW. :)
Actually, I'm pretty sure he meant 118mm
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Old 10-21-2011, 08:05 AM   #95
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Thanks for catching the typo guys, it's 118mm and has been corrected.
Interesting how the length jumps an entire half a millimeter when they went to the large spigot jugs in 1976
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Old 10-21-2011, 08:22 AM   #96
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Thanks for catching the typo guys, it's 118mm and has been corrected.
Interesting how the length jumps an entire half a millimeter when they went to the large spigot jugs in 1976
Would that be to make up for the aluminum gasket used before '76?
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Old 10-21-2011, 08:29 AM   #97
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Would that be to make up for the aluminum gasket used before '76?
BINGO! if you smoked Bob, I'd send you a cigar!
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Old 10-21-2011, 08:31 AM   #98
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Originally Posted by supershaft View Post
I am suspecting that ww just figured it out? At least part of it?
To be honest, I've been waiting the entire thread to bring this up.
It's the first thing that popped into my head when all this started.
I was just having a blast reading all the "theories".
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Old 10-21-2011, 11:20 AM   #99
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Actually, I'm pretty sure he meant 118mm
Dang, we're all mostly blind...
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Old 10-21-2011, 11:30 AM   #100
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However it was written I read as a half mm.

For some reason the the /7 750 escapes my reasoning sometimes but that subject is longer, not shorter than a /5 cylinder?
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Old 10-21-2011, 12:26 PM   #101
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Originally Posted by robtg View Post
Would that be to make up for the aluminum gasket used before '76?
Interesting! Good call Bob! I might have the opposite issue. Not to derail, but I think this might be the answer to my thinking my CR was down from expected 10.5:1 on my race bike. I have too much head/ valve/ piston clearance, but need to go back and measure everything again.
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Old 10-22-2011, 01:11 AM   #102
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Originally Posted by wirewrkr View Post
Early (70-75) jugs I'm measuring this: see picture
76 and later are running around 118mm even or thereabouts.
I compared several original jugs. I have many several.
Just measured mine. A quick check put it at ~4.624 inches, (117.4496 MM). Will check again in the morning.
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Old 10-22-2011, 10:25 AM   #103
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I compared several original jugs. I have many several.
You PUI there Robert?
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Old 10-27-2011, 06:09 PM   #104
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You PUI there Robert?
In English please?
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Old 10-27-2011, 08:32 PM   #105
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Interesting! Good call Bob! I might have the opposite issue. Not to derail, but I think this might be the answer to my thinking my CR was down from expected 10.5:1 on my race bike. I have too much head/ valve/ piston clearance, but need to go back and measure everything again.
My point exactly. Longer /7 jugs are going to increase piston/valve clearance, not decrease it?
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