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05-11-2013, 03:27 PM | #1 |
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Join Date: May 2010
Posts: 47
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"A" cylinder head id?
Don't remember seeing many with just an "A" , also what does the number (50) indicate on bottom center?
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05-11-2013, 05:33 PM | #2 |
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Join Date: May 2010
Location: Oshkosh, Wi
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Re: "A" cylinder head id?
Very common head. Started in 1939 and went to 1942.
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05-11-2013, 05:36 PM | #3 |
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Location: Gardiner Me.
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Re: "A" cylinder head id?
The A heads were on the 40-41-42 221 engines. They are good heads. If you bore those engines 1/8in. to 3-3/16 and use those heads, you can really feel the differance in torque in seat of the pants when taking off and lugging on a hill in high gear. Walt
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05-11-2013, 08:25 PM | #4 |
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Join Date: May 2010
Location: grass valley ca.
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Re: "A" cylinder head id?
walt. i have a good set of A heads. would they do anything for my 59ab in a 40 merc. reguards dick t.
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05-11-2013, 10:28 PM | #5 |
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Location: Chester Vt
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Re: "A" cylinder head id?
Absolutely, but you'll have to clearance for the valves. Just lay the 59 head gasket on the A head and remove a small amount at the top of the valve ares. Then have the heads milled for 40-50 thou piston to head clearance. Works real good, have a set on my 8BA.
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05-12-2013, 07:43 AM | #6 |
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Re: "A" cylinder head id?
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05-12-2013, 08:56 AM | #7 |
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Re: "A" cylinder head id?
I use little aluminum balls on top of the piston to check piston to head clearance. This eliminates the guesswork on how much to mill the heads. Just in case you want to know how much clearance you have in your running engine. use some solder feed it into the spark plug hole and rotate the engine. Remove the solder and measure the clearance. A friend of mine tole me that, works great.
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05-12-2013, 08:59 AM | #8 |
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Join Date: May 2010
Location: grass valley ca.
Posts: 75
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Re: "A" cylinder head id?
thanks ron&walt.i am going to do this. going to tahoe ev8 meet in june, so wont do anything till i get back. car is runing good now. only 60 miles up the road,but i don`t needto tear into now. other things to do on it before then. reguards dick t.
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