Main bolts need factory specs

Posted by jdemaris on November 25, 2006 at 07:51:02 from (66.218.13.88):

In Reply to: help! Searching for info for my father posted by Brian Verboom on November 25, 2006 at 07:08:53:

I've rebuilt many BD144s - so if you get stuck on somthing - just post here - or email me a jdemaris@usadatanet.net
With some of the bolts you cannot assume proper torque just by looking - especially the main-bearing cap bolts. BD144s use two different types with different torques.

All the BD144s are pretty much the same - except the early ones have in-line, air-governor BPE injection pumps, and later ones have rotary DPA CAV (Roosamaser clones) with centrifugal governors. Also, for some strange reason - most tapped bolt holes in the block are heli-coiled - not tapped directly into the cast-iron and they can be spun out if not careful. Also, many important bolts are not grade-marked, and some are drilled for wire-locking.
Head-bolt torque - 75 ft. lbs.
Rod-bolts - with drilled heads - 35 ft. lbs.
Main bearing caps - two types use
Type #1 - raised thread "Pitch bolts" 75 ft. lbs.
Type #2 - Place bolts - shank and thread same
diameter - 85 ft. lbs.
Fuel injection static timing - 20 degrees BTDC
Hot valve lash - intake and exhaust .020"

Replies:

• Re: Main bolts need factory specs Brian Verboom 08:44:21 11/25/06 (0)

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