eh there guys, my
Max II 8x8 had a problem with the single # 50 chains so i had to upgrade the whole thing to #60 by getting the axles and sprokets from Argo (argo ran single #50 in the early 70s and they too had a prob thus they went to double #50) ,the XHD axles from Argo retail for $70 a piece and the single #60 sprokets run about $15 each up here, the Argo axles use a different positioning system ,it uses little divots and a set screw to keep your sprokets in the correct location not snap rings and therefore very easy to adapt to a diferent location on the shaft that is required by Max, the Argo axle is 1/2 inch shorter than the Max axle but is not an issue. the new larger brgs and holders are all the same from Max and Argo so you wont have to change anything there, i went with a 27hp kohler and it has plenty of power, the T20 is holding up fine (i also have a Max II with a 700 MXZ and it too is holding up so the T20 is bullet-proof) as far as the tubs and tops go, it is very dificult to get that right with used tubs so i bought 2 new ones cut them and had them welded profesionally (about $600) ive had to repair the welds in some spots since, so i wish they made the 8x8 tub. the Max II shifter is now in the back seat and is a pain in the butt, but the Max IV you will simply have to extend the linkage. one thing i wish i had done was lift the front axle brgs in the frame an inch or so, so that they not on the ground with the same preasure as all the rest to accomodate easier turning ,the T20 is posi-track so ive never been stuck in that unit, the Max II has a narrow chain galley and was a pain when trying to get the axles and sprokets lined up ,Max IV has wide galleys and shouldnt be a problem, if i can think of anything else ill post it for you,,,,,,