MM

• My John Deere Collection And Pulling Site

What the rules concerning replacement blocks are trying to address, is the distance from the centerline of the crankshaft to the top of the block(deck height). That is why JDs can run power blocks, IH Ms can run 400/450 blocks, WCs can run D17 blocks, and YES even MM Us can run M5 blocks. In each of those examples the only thing that changes in the engine dimensions is the bore size.

A MM G block is taller than a MM U block, thus increasing the deck height. That gives the puller an advantage when he/she increases the stroke of the crankshaft.

Respectfully.

Jon Aller

The MM can get the same amount of stroke with the short blocks as the tall blocks. The ONLY reason the MM pullers want to run the tall blocks is because that is the motor that was put in to farm with. When they change to the short blocks with the big crank, they will get about 15 more horsepower than the G motor.

What was used years ago should be allowed to be legal in a pull today?

I saw a styled G John Deere 25 years ago in a field plowing. I was with my dad and do remember the guys set up to this day. He had a lpg "torpedo" tank strapped to the frame with a valve by the throttle. When the plow started pull tough, he cracked the valve to the lpg tank open feeding lpg into the carb as the air cleaner was unhooked. Maybe not the safest thing around, but was keeping up with 4020's. Still legal to run in a pull?

I think the enginuity to put these pullers together today is fascinating. And for every rule put in place there will always be someone challenging it and another finding a way around it. Can't run a MM G block, put a Welters kit in or go balls out with an 800. No matter what they do, prairie gold will always rule.

What was used years ago should be allowed to be legal in a pull today?

I saw a styled G John Deere 25 years ago in a field plowing. I was with my dad and do remember the guys set up to this day. He had a lpg "torpedo" tank strapped to the frame with a valve by the throttle. When the plow started pull tough, he cracked the valve to the lpg tank open feeding lpg into the carb as the air cleaner was unhooked. Maybe not the safest thing around, but was keeping up with 4020's. Still legal to run in a pull?

I think the enginuity to put these pullers together today is fascinating. And for every rule put in place there will always be someone challenging it and another finding a way around it. Can't run a MM G block, put a Welters kit in or go balls out with an 800. No matter what they do, prairie gold will always rule.

Jon

Wake up people!! The NATPA only has rules for those they don't want to win.

But, I have read the NATPA rules. If you are telling me that John Deeres are allowed to run spacer plates in Div III and IV, I have trouble believing it. How thick are the plates you are talking about? Between the block and the crankcase or the block and the head or both? Who are the drivers/owners? I am so tired of hearing this crap about all of this blatently illegal stuff. Where are the protests from the competeing pullers????!!!!

Mr or Mrs ??, or can I just call you ?? do you pull in Div III or IV? What pulls have you attended to see these spacer plates? How many tractors? Name the owners... WHY HAVEN'T YOU PROTESTED THEM!!!!

Jon Aller