Hi - can someone post the specs for the pony motors crank journals? mine threw a rod cap and destroyed #2.

 

From Members Tech Library-a lot more info available in there.
Good luck-

thanks - ordered a copy but its on its way need to go mic journal today and find unobtanium bearings. I have found other brands with the same journal ID bearings i might try modify- around $8 a set so well worth the attempt

Caterpillar still has oversized bearings for the ponys

.020 us 3b7938
.030 us 1h2831

Regards

well i found bearings believe it or not, $7 a piece - and im going down the rabbit hole but 44mm piston rings come in 1.5mm thickness, the original pony engine rings come in at 3.1mm - so if i stack 2 rings ill be 0.1mm below spec and have gapless rings - no blow by! I did this on a tohatsu outboard and its been working perfectly- 

my gap was near 2-3mm! I recall seeing blowby out of the top oil fill - 

also found a con rod on ebay - lucky me exact part #, ONE left. 

 

Cat still has rings for sale

Regards

cat has the main bushing too. jp pistons(nerada automotive) in south aus has replacement pistons and rings. check the bores for wear, they have oversize pistons as well as standard.

found some generic rings - im gonna double stack em for a gapless setup. Hones out cylinders yesterday that seem ok- im not too concerned for a perfect engine pretty sure itll run just fine. every $35 for a cat parts goes from $200 to $500 and im super tight on $. sitting with a boatyard full of boats to sell..

well you know boat stands for break out another thousand.
and they are holes in the water you pour money into.

there is a song about it by aussie bawdy comic kevin bloody wilson if it floats or flys rent it by the hour.