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EFV-8 Club Forum / General Mercury Discussion / 59ab heads

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Posted By Discussion Topic: 59ab heads

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angus
10-20-2017 @ 8:32 PM
Member
Posts: 24
Joined: Sep 2012
          
Hi I have a 1948 mercury with a 59ab engine in it .Can the heads which are marked 6049 and 6050 go on any side of the engine ? Thanks Roger

This message was edited by angus on 10-20-17 @ 9:59 PM

TomO
10-21-2017 @ 9:14 AM
Senior
Posts: 7243
Joined: Oct 2009
          
Roger, I cannot find any reference to 59A-6049 heads. The 6049 head would go on the right side of the engine in the earlier version of the heads and the 6050 would go on the drivers side of the engine.

The 59A- 6050 heads will work on either side of a 59A engine.

Tom

CharlieStephens
10-21-2017 @ 11:53 PM
Senior
Posts: 878
Joined: Oct 2009
          
This is way out of the time frame I am knowledgeable about but I wonder if the difference is the location of the temperature sensor? Are you sure there isn't a prefix on those head numbers?

Charlie Stephens

This message was edited by CharlieStephens on 10-21-17 @ 11:57 PM

angus
10-22-2017 @ 3:39 AM
Member
Posts: 24
Joined: Sep 2012
          
Hi thanks for the reply .The other day I was reading the ford mercury 1942-1948 shop manual the one with green cover and on page k-27 it says. Install cylinder heads 6049 on the right hand bank and 6050 on the left bank .Look for the part numbers cast in the heads as each will fit on the other bank but if you put on the wrong side will set up an engine vibration owing to a difference in volume of the combustion chamber .In my parts book it states to use heads 59a 6050b on both sides when replacing earlier types .

TomO
10-22-2017 @ 8:20 AM
Senior
Posts: 7243
Joined: Oct 2009
          
Roger,

The 1948 Mercury came with the 59A block and 59A 6050 heads. Both heads had the same P/N and identification marking. The heads can be used on either side on the 59A block.

The 21A 6049 and 21A 6050 heads were the last set that had different part numbers. These and earlier heads are the ones that the shop manual is referencing.






Tom

angus
10-22-2017 @ 1:38 PM
Member
Posts: 24
Joined: Sep 2012
          
Hi Tom thanks for the help and setting me on the right track . Good luck ROGER

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