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pony specs

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16 years 9 months ago #10211 by bobcatfour
pony specs was created by 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

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16 years 9 months ago #10212 by SJ
Replied by SJ on topic D4 Start.Engine
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.

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16 years 9 months ago #10213 by Old Magnet
Replied by Old Magnet on topic pony specs
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.

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16 years 9 months ago #10217 by edb
Replied by edb on topic J series D4 Pony Specs.
Hi Team,
scans below from the SRB, form 7490B, 11-43.
Cheers,
Eddie B.

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16 years 8 months ago #10880 by bobcatfour
Replied by bobcatfour on topic pony info
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

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16 years 8 months ago #10905 by STEPHEN
Replied by STEPHEN on topic pony specs
Sure, try Cat!

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16 years 8 months ago #10912 by Eric Marshall
Replied by Eric Marshall on topic pony specs
Give Florin Tractor in Sacramento a try, they have a good stock of ner parts for the old Cats

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