175 XTD first drive

Safe travels to all

DrAllis wrote: Going for a 17 mile drive to the local Pizza Ranch and then 17 miles back by another route. Son and grandsons are going as we will take the 175 XTD, the One-Seventy gas high deck, nephews D-15 II and the WD-45.<span style="white-space:pre">     </span>Weather is to be perfect !!<span style="white-space:pre">     </span>I tend to get my $$$$;s worth at Pizza Ranch and may need a nap half-way back home.

That is fantastic! What a great family memory and I really like hearing about the engine change. I wish I had your talents!
God bless you Tom and family,
Pastor Mike Townsley

Way to go DOC and Fam!

I saw the picture on Facebook. You did a great job fitting the 433 in the 175 chassis. I love the work you do - it does not look hacked together! You take pride in your work.

If you run the WD-45 and the One-Seventy side-by-side down the road the WD-45 is just a tick faster with 14.9 x 28 rear tires. The One-Seventy has 15.5 x 38's and both engines are screaming at 2200 RPM. Actual speed is 17.0 to 17.3 MPH. The 175 is the slowest because it has 16.9 x 28 tires and 175's are equipped with 180/185 final drives for strength, but are 10% slower geared. I'd say it runs 16.5 MPH at 2500 RPM's as a guess.

This high speed isn't to be used in the field !! It is only when I need extra ground speed to keep up with Farmall "M"s on a tractor ride. When I built the engine, I had the rotating assembly balanced. I also had a small groove ground into the very center of each main bearing journal to see to it the rod bearings would be getting oil 100% of the time instead of 1/3 of each revolution of the crankshaft. A D-17 governor spring is all it took to get the extra speed from 1,700 RPM to over 2,000 RPM. A WD is not much  different when it comes to the oiling system. I'd sure like it to have good oil pressure on the gauge before doing something like that. I know someone (an old deceased customer) who told me he used a D-17 governor spring on his WD with M&W pistons (60+ yrs ago) and the engine lasted one spring plowing season. The failure you ask ?? a rod bearing, from the lack of oiling that the 1/3 crank rotation gave to the rod bearings at 2000 RPM under a load.

Edited by DrAllis - 07 Jul 2024 at 1:55pm

The old rule of thumb might be OK for some engines but not for these.

You've tried an AGCO dealership 70229519 is the p/n???  I'd say the top one might be to a D-17.

Edited by DrAllis - 08 Jul 2024 at 1:43pm