cylinder

Identification of case numbers and cylinder heads
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jerryd
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cylinder

#1

Post by jerryd »

Good evening Just pulled a cylinder from the box of parts I have . the numbers at the base are an F and in between the rivets 11 4. Would that be Nov 54 or Nov 64? Thanks for any help jerry
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Re: cylinder

#2

Post by RUBONE »

A November '64 cylinder will not have an oil feed passage in it, just a return.
Speeding Big Twin
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Re: cylinder

#3

Post by Speeding Big Twin »

Jerry, if it’s a Harley cylinder the F equals June. For Pan cylinders, F 11-4 usually indicates casting on June 11 of either 1954 or 1964.

A 54 cylinder would be drilled as original for feed oil but a 64 wouldn’t be. However, a 64 cylinder could have been drilled later on by anyone because the casting retained provision for the passage.

Both would have been made by Motor Castings Company but I don’t think a 54 cylinder would bear the maker’s logo whereas a 64 cylinder may have MC cast-in and raised on the left side at the base.
Eric
jerryd
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Re: cylinder

#4

Post by jerryd »

The camera is broke so here are some phone pictures , maybe they will help. The one shows a stamp on the base . Is it a 10? or a one and a sideways 6, or does it mean anything at all . I have it in an electrolysis bath eight now to clean it up. Paint is coming off too.
IMG_20150902_090516_zpslcklhadl.jpg
IMG_20150902_090516_zpslcklhadl.jpg (60.94 KiB) Viewed 1547 times
IMG_20150902_090402_zpsjn4v7pyp.jpg
IMG_20150902_090402_zpsjn4v7pyp.jpg (53.72 KiB) Viewed 1547 times
IMG_20150902_090320_zpspxjkjrlh.jpg
IMG_20150902_090320_zpspxjkjrlh.jpg (71.96 KiB) Viewed 1547 times
IMG_20150902_090156_zpskl0chtba.jpg
IMG_20150902_090156_zpskl0chtba.jpg (64.98 KiB) Viewed 1547 times

thanks for the help.
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Re: cylinder

#5

Post by Speeding Big Twin »

Thanks for the photos, Jerry. Your cylinder has the Motor Castings Company logo and for Panheads it normally helps indicate the cylinder was the type used for 1963–65 models. I don’t think the logo was on Pan cylinders used for 1948–62 models. With your cylinder, the date code combined with the logo indicate it was cast on June 11, 1964. It appears to have a feed oil hole but that wouldn’t be normal procedure with a 64-cast cylinder. However, I’ve seen this before, it was done with a rear cylinder cast on September 10, 1964, and I think there may be two possibilities for it: the feed hole may have been drilled later on by persons unknown; or perhaps it was indeed drilled as original because the cylinder was to be used as a replacement for a 1948–62 machine.

I think the marking underneath your cylinder is a round-back 6. The short line indicates the bottom of the character so in this instance it is 6 (6) as opposed to 9 (9). I do not know for sure what it indicates and my best guess is that it was stamped by an inspector. Other similar markings I’ve seen under Panhead cylinders are a round-back 9, a sans serif, flat-top 3 and a sans serif, open-back 4.
Eric
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Re: cylinder

#6

Post by jerryd »

Thankyou! Now to see if it will clean up for my mixed bag 58 pan. Will try to get a measure on it tomorrow Thank you again jerry
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Re: cylinder

#7

Post by jerryd »

Morning , measured the bore in one inch from top and bottom top 3.441/3.439 and bottom 3.443/3.442. My tools are not 'pro' but give me an approx. So it is a tad under stock of 3.4375. jerry
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Re: cylinder

#8

Post by cdndewey »

jerryd wrote:Morning , measured the bore in one inch from top and bottom top 3.441/3.439 and bottom 3.443/3.442. My tools are not 'pro' but give me an approx. So it is a tad under stock of 3.4375. jerry

Don't take offence, but I think you maybe you need to get someone to measure it for you.... if it's used it should be larger at the top than the bottom.... and if it's not used it should be the same top and bottom.

When I went to school back in the sixties and early seventies, 3.441 was bigger than 3.4375, making it a tad over stock, not a tad under stock
jerryd
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Re: cylinder

#9

Post by jerryd »

Yes I agree as my tools are less quality than a machinist I have always let them give the final answer and match the piston to the bores. My machinist buddy is ten miles away. I will see him this week. Thanks for your interest. jerry
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