pony specs

[bobcatfour]

Does anybody know the specs on a D47J pony, cubic inches and horse power? Also, where can I access some info on rebuilding and assembly specs?
Thanks

[SJ]

The bore is 2.750" & the stroke is 3" so to get the cu. in. use pi (3.1416) & multiply by the radius squared 1.375" for the bore & multiply by the stroke 3" then by two for two cylinders.I haven,t any HP specs but someone might have a manual to gve you more tips. They aren,t too complicated to work on. Valves get set .007" to 010" clearance cold.Crank (std.) is 1.812" on mains & 1.750" for rod journals.

[Old Magnet]

The pony motor (D2's &D4's) are rated 10 hp @ 3,000 rpm.
Best source for specs and instructions are the Servicemens Reference Manuals for the various engines. For the D4 either the D4400 or D315 engines.

[edb]

Hi Team,
scans below from the SRB, form 7490B, 11-43.
Cheers,
Eddie B.

[bobcatfour]

Thanks for the helpful tech specs! At this point I am searching for rod bearings, .010, but may need .020 depending on what crankshaft ends up at. Std. rings seem to be no big problem. Would replace mains if I could locate some. Do you know of any sources for these pony parts ?? Bob

[STEPHEN]

Sure, try Cat!

[Eric Marshall]

Give Florin Tractor in Sacramento a try, they have a good stock of ner parts for the old Cats