M-M Z

[M-M]

I have my 45 M-M ZTU apart doing an overhaul. I have heard that you can get a few more ponies if you advance the cam. How do you go about doing this? Does the cam just run one tooth in front of the crank or behind one tooth. And if you do this do you have to change your mag timing? Thanks in advance.

 

[MM ZAck]

If you advance the camshaft one tooth it will give you better low end torque. It runs one tooth in front of the crankshaft. To do this, you need to remove the side cover off the engine. Loosen off your valve train and/or remove your rocker arms. The camshaft unbolts from the side and when the bearing caps are removed, you can rock it out, advance it one tooth, then put it back in place. Take a look at the attached pictures. I did this on my ZA and it did make a difference.

Zack

 

[com- yellow]

Zack will this work on a 220 in a U302 lp?? thanks BOB

 

[MM ZAck]

Yes, it should work. The overhead valve 206 and 220 have the same number of teeth (60) on the camshaft gear as the ZT and ZA.

Zack

 

[fdnross]

Hello, I recently bought a 1951 ZA, Would you email me or post some pictures of your ZA, I would like to see how your opperator station looks, mine has been modified, also did you overhaul your engine and where did you get parts. My tractor sereal number is 00609811 the engine number is 01812339 3 5/8 x 5 206B 4 if you could let me know about engine parts that would be a big help.
Thanks
Ross