Norton Mark

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If you use a single carb m/fold don't forget the two split sleeves that are inserted in the inlet ports!
 
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When I had my 64 Atlas I found this manifold for single carb on the vertical twins, that was my indeed a norton part
I do not remember this split sleeves part
Mark
 

lcrken

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The factory parts books aren't much help, are they? The ones for '63-'65 and '66-'68 show the numbers for pretty much everything else. The sleeves Bernhard mentioned are listed for '66-'67 650SS in one parts list, and for 88ss and 650 in another. They are part no. 23864. The manifold is shown in Plate A as item number 27 in the '63-'65 parts list, but does not show up in the associated list of parts. That's the same plate that Andover shows in their parts diagrams, and they also don't have a listing for the manifold.

However, I found a couple of part numbers in earlier ('61-'62) lists that show part numbers for the manifold. The manifold mentioned above as A27 is listed as part number 22757 and used on models 88 and 99, Std. and De Luxe. There is also a supplement to that list for models 88ss, 99ss, and 650ss that lists an intake manifold part number 23739 as used on '61 88ss and '61/'62 99ss.

Hope that helps.

Ken
 
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The 2 into one manifold on downdraft heads is for first year 62 (partial) atlas and are quite rare. They may have resurrected the same part for the mercury. I have never been able to score one....

below: 23739 is for pre down draft heads
61 88SS, 61-62 99SS

99ssmanifold.jpg


22757 2 into 1 for pre downdraft heads 1949-1962

domiman1.jpg
 
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I have a complete engine/gearbox assembly sitting on my bench. If it weren't -16 I'd go check it out and take some pix. hopefully by the weekend it'll warm up
 
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My '62 Atlas (titled as '63) came with a 2-1 manifold and a 389/87 Monoblock. I always assumed this was original kit. I read the casting number as X23356. Not for sale, someday soon the head will come back from the menders.
DSCN0359.JPG
 
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I have one stamped 23356, no X preceding the number. It has a three stamped on the opposite side.
 
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Ok yous guys,
that’s what I have been looking for,
have brought in RGM manifold and it looks nice but not like the original,
thanks for P/N and info and all those great pics. Now if any of you want to part from that manifold I would buy it from you, so just let me know
Norton Mark
 
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