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21
220 / Re: 1952 220 Sedan W187 build restoration
« Last post by yan2947 on March 07, 2019, 07:57:13 PM »
Henry, I hope you are enjoying Amelia.  Post some photos!  I think what you are saying is that my cam is fine.  There is no "33" stamped on it.  Could it be behind the gear?  The one side (as shown previously) has nothing stamped on the end.  Do you know which gasket (part number) I need?  So do I have a 220 cam?  Or is it a 220a setup?  Mine was replaced then?  Thank you for your invaluable time and information!
22
220 / Re: 1952 220 Sedan W187 build restoration
« Last post by Henry Magno on March 06, 2019, 07:49:09 PM »
Sorry I have been away from this forum for a while. I determined what your head is from the cast in numbers between 3 & 4 spark plugs. You posted a picture of it. Yes you have to use the 8.7 gasket. You don't have to use the newer cam, but you might get better performance with it since the valve timing is optimized for the higher compression ratio. The number stamped into the rear end of the cam for the 8.7 is 33. The earliest 220 cams have no number, then 14 followed by 14/1. I think there are more cams than compression ratios as they were fiddling with the valve timing as they went along. These designations are listed either in the 220 manual or the later 180-220SE supplement for the pontons, since the early 220a ponton had a 7.6 head.
I can't look anything up because I'm in Florida for the Amelia concours.
23
220 / Re: 1952 220 Sedan W187 build restoration
« Last post by yan2947 on February 24, 2019, 04:26:21 PM »
Henry, here is the flap that is not broken...

Yan
24
220 / Re: 1952 220 Sedan W187 build restoration
« Last post by yan2947 on February 18, 2019, 05:20:24 PM »
I am sure henry is right also.  I wonder if my head is newer with the old cam and old head gasket.  I have no stamp on the right side like you and how the manual describes.  Even the Ponton's had the stamping so until the Classic Center opens tomorrow I will be a little lost...
25
220 / Re: 1952 220 Sedan W187 build restoration
« Last post by Scott Montoney on February 18, 2019, 05:17:47 PM »
Here is another factor that messed me up for a while.  I found out that my engine was replaced in 1963, by the factory in Stuttgart. Although the serial number on the block and the metal tag show the original serial numbers, there is a second tag that I'm told indicates it is a "swapped out, replacement". I think that is when some of my "upgrades" happened.  I understand that "unit replacement" was the preferred procedure, instead of rebuilding the existing one. 
26
220 / Re: 1952 220 Sedan W187 build restoration
« Last post by Scott Montoney on February 18, 2019, 05:07:34 PM »
First of all I miss typed.  I should have typed 8.7 (not 8.6, there was no 8.6).
Second, I trust Henry's experience .
Third, It seems a logical assumption since your photo showed 8.7 just above the part number cast into the head.
Fourth, The photo of the bottom of the head shows a combustion chamber that is "newer" than the older, almost square, shape.

So, it is definately not an old head.  It is also not like my 7.6 head.  I have to assume it is probably the 8.7 as Henry suggested.

I don't know enough about the cams.  All I know is that with mine, the cam is a newer build to go along with the head, to improve performance, and the service manual lists both as a possible combination, at the time the book was printed.  I also think the carb jets are a bit different as well, with the different cam.
27
220 / Re: 1952 220 Sedan W187 build restoration
« Last post by yan2947 on February 18, 2019, 05:06:49 PM »
Scott, On the right side of my head I have 2 cut out areas where you have one with your compression stamped below the one.  For some reason I have 2 cutouts - not sure what they are for.
28
220 / Re: 1952 220 Sedan W187 build restoration
« Last post by yan2947 on February 18, 2019, 03:58:17 PM »
How do we know my head is 8.6:1?  I know Henry stated that but the cam is stamped from '52 which is before the 220s.  This is where I get lost.
29
220 / Re: 1952 220 Sedan W187 build restoration
« Last post by Scott Montoney on February 18, 2019, 03:55:38 PM »
I checked with Niemouller.  Knowing that the head is 8.6:1, found on the 220S, I looked in that section. 
They list the gasket for the 8.6 head as 180 016 18 20


30
220 / Re: 1952 220 Sedan W187 build restoration
« Last post by Scott Montoney on February 18, 2019, 03:38:45 PM »
In my opinion, you should get the gasket that is for the 8.6 head.  Not the current one shown.
I'd like to think the Classic Center could find the correct part number?

As for the cam, I have no idea. 
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