Rivco said:
Barry,
Here's a few more things to help confuse you in your decision between the 422 & 425.

I bought the 22 Hp. carburetor & gov. spring from Robin and installed it on my old 180 ( less than $300.00 ) and BANG I have a 22 Hp. engine !!. I bought the 3-spool valve ( less than $300.00 ) and BANG I have a AUX. hydraulic circuit. The 422's have one steering cyl. same as the 180. The 180 has a 50" lift HT. & the 422 has a 52" lift HT.... not a big difference. The 422 lift cap is 800# compared to 600# on the 180, but the same engine is powering the hydraulics for that extra cap. The 422 has an oil cooler & the 180 does not....again basically the same engine (15 amp charging system). The other thing to consider is the Main PTO...the 422 & 425 have a elec. pto...so every time you engage an attachment you get the slam-bang effect!!, it's not a manual adj. soft start PTO like the 180 has.
IMO. I would go the extra mile ( $$$$) and buy the 425...the 422 and 180 are just to close in spec's and performance to make any difference. If you had bought the 422 to begin with then you would upgrade to the 425. I think you would be making a mistake going with the 422 where it is so close to the 180 ( with regards to the engine, single steering cyl., and probably the same pumps).Bite the bullet...and go for the 425.
I hope my input has confused your buying decision even more.
Ok someone edumacate me on pumps.....
Lets look at this upgrade from my prospective.
180 = PTO- 8 GPM @ 2,000 PSI
422= PTO- 8 GPM @ 2,500 PSI
425= PTO- 8 GPM @ 2,500 PSI... same output??
The 422 lifts 800 pounds
The 425 lifts 800 pounds
How are the pumps different ?? and even if they were, same spec's why would one care ?
Differences
180 600 pounds lift
422 800 pounds lift
180 No Oil cooler
422 Oil cooler smaller than the 425 oil cooler? yes but some cooling better than none.
180 20 attachments
422 40 attachments same as 425
180 / 18 HP
422 / 22... 4 more (big jump) and I would guess using your idea, a smart idea at that. I could jump it up to 25 hp same motor right?
180 No quick attach
422 has quick attach
180 no aux valve for a Mini Hoe
422.......................... Mini Hoe option
422 wider tires than 180 / track same as the 425
I'm thinking this is quite a bit of an upgrade from the 180?? And really still can't see where the 425 out shines the 422 by that much, other than the dual steering rams yes stronger but, as noted by Tim, the 422 single cylinder may have a slight advantage in steering this way.
425 more wheel torque which may dig better, but I figure the 422 will do the same. Guessing it might take a little longer to get the job done. I'm not in a big hurry.
Considering it's 2000 more? And if I make my own ROPS 2,500 more. Again I don't have a lot of hills or use mine for mowing the yard... Not trying to be a wise guy, just my way of looking at this.
