Cylinder head for K241-K301-K321
 

There was some dicussion a while back on the different cylinder heads for the K241-K301-K321 motors. Here is what each different head looks like.
High compression/LP head:

http://i152.photobucket.com/albums/s...ild/head01.jpg
An easy way to tell if you have if you have this style head is heart shape area in the valve area and a flat spot below the spark plug. This head was found early K241 motors.

Low compression head:
http://i152.photobucket.com/albums/s...ild/head02.jpg
This head like the high compression/LP head has the spark plug in same area. The area above the valves does not have the heart shape like the High compression/LP head does. There is a valley/low spot below the spark plug.

Spark plug above the exhaust style head:
http://i152.photobucket.com/albums/s...ild/head03.jpg
Biggest advantage to this style head is having a better fuel burn compared to the other style heads. The valve pockets are bigger so there is clearance for bigger exhaust valve in some of the K301-K321 motors. The head in this picture will be going on a puller motor (stock class).

Thanks Merk for taking your time to provide this detailed information for us and educating everyone on the different types of heads. I encountered 3 different types of heads when I went shopping for one this past spring for my 107 and I really could have used this info back then when the guy asked me, "Which one do you want?" and I was left speechless, truly not knowing the difference. Now I do and so I am better prepared to take care of business and my GT's when I cross that bridge again!!! I really appreciate your time and expertise!!

Cub Cadet 123

PS>Still waiting for the secret ingredients and mixture ratios to that well known Merkle Gasoline!!!:biggrin2.gif: