Jacobs parts catalog - Air Repair Inc

JACOBS R755

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Air Repair Inc

JACOBS R755

TABLE OF SPECIFICATIONS

Model L6MB R755-9 R755-B2 R755-A2

Rated HP 330 245 @ 2200 275 @ 2200 300 @ 2200

Minimum fuel 73 73 80 80

octane rating

Magneto R-30 BTDC R-30 BTDC R-31 BTDC R-31 BTDC

timing L-30 BTDC L-30 BTDC L-31 BTDC L-31 BTDC

Bore R755 Series………………………………………………..… 5.25”

L6MB…………..………………………………………..…... 5.5”

Oil pressure………………………………….... 80-90 psi above 1400 rpm

Firing order………………………………………...…….… 1-3-5-7-2-4-6

Master rod location………………………………………..….. #1 cylinder

Valve clearance……………………………. 008” (cold) intake & exhaust

Maximum oil outlet temperature…………………………………... 200 F.

Valve timing…………………………….… (set valve clearance #1 cyl. to

.040” exhaust & .035” intake)

intake closes - 62 ABC

intake opens - 21 BTC

exhaust closes - 12 ATC

exhaust opens - 62 BBC