To wonder of MYCOM compressor

Dear All pros,
I have a question about MYCOM compressor
I'm wordering how difference between A and WA model, also B and WB model
For example: the differences between N4A and N4WA

Thanks for answer!

There are about 4 things different .

Water jackets on heads .
A+B are cast into head with diamond shape which are harder to clean .
WA+B have flatter type plate bolted on head which are very easy to clean ( no crevices or hard to get at bits ).

Heads and head spring are different and not interchangable .

Suction and discharge valve springs are heavier ( performance improvement ) .

Valve plates are different to accomodate different valve springs and quantity of springs .

Shaft seal is different with rotating steel face being split in middle and spring loaded against thrust bearing ( mycom call it double seal ) .

Sump casting in A+B has cast webbing in sump while WA+B is smooth dish like and very easy to clean .

Piston ring cofigeration changed around this time but you can use in both to keep it simple .

Ithink thats about it .

I have catologue of those if you want i could scan it and mail it to you.
post your mail to me .Gholbehan@yahoo.com

Quote:

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Originally Posted by RANGER1

There are about 4 things different .

Water jackets on heads .
A+B are cast into head with diamond shape which are harder to clean .
WA+B have flatter type plate bolted on head which are very easy to clean ( no crevices or hard to get at bits ).

Heads and head spring are different and not interchangable .

Suction and discharge valve springs are heavier ( performance improvement ) .

Valve plates are different to accomodate different valve springs and quantity of springs .

Shaft seal is different with rotating steel face being split in middle and spring loaded against thrust bearing ( mycom call it double seal ) .

Sump casting in A+B has cast webbing in sump while WA+B is smooth dish like and very easy to clean .

Piston ring cofigeration changed around this time but you can use in both to keep it simple .

Ithink thats about it .

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Thanks for comment

Quote:

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Originally Posted by mbc

I have catologue of those if you want i could scan it and mail it to you.
post your mail to me .Gholbehan@yahoo.com

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My email: info@avico.com.vn