Balmar XT-DF-170-J10
SF/DF Hole to Hole B: 6.53"
Overall Height C: 7.43"
Case Diameter D: 5.26"
Mounting Foot Bore DF: 3/8" 10mm
First Groove to Mounting H:1.28"
Front Foot thickness I: .6"
Saddle Width K: 3.14"
Rear Foot thickness L: .52"
From back of Rear Foot to tip of +Terminal J: 1.61"
Overall width first groove to back of rear foot: 1.28"+3.14"+.52"= 4.94"
Alternator
RPM 2000 ---> 115amps hot, not continuous
Balmar 90-65 (Slightly derated from 90-75)
SF/DF Hole to Hole B: 6.50"
Overall Height C: 7.25"
Case Diameter D: 5.50"
Mounting Foot Bore DF: 1/2"
Center of pulley to Mounting H:1.08"
Front Foot thickness I: .6"
Saddle Width K: 3.14"
Rear Foot thickness L: .50"
From back of Rear Foot to tip of +Terminal J: less than 1.61"
Overall width center of pulley to back of rear foot: 1.08"+.60"+3.14"+.52"= 5.34"
1/2" Belt, 2.5" single pulley
P type Polarity.
Alternator
RPM 2000 --> 67amp (no hot amps)
Conclusions:
Case diameter of the XT-DF-170-J10 is 0.25" less.
Overall height of the XT-DF-170-J10 is 0.18" more.
Overall width is comparable, but the + Terminal sticks out more.
From the Balmar Configuration website app
Results | Balmar
Manufacturer: Yanmar
Model: 3YM30
Engine Specification: 3 Cyl., 68 cid 1.116L
Diesel
OEM Alternator: w/Hitachi 80A Alternator
Mounting: Dual Foot 3.15" (Hitachi Style)
Standard Pulley: K6 Serpentine
Amperage: 80
Voltage: 12
Without a pulley change using SV: 60-100-SV, about $688
or adding the
charging kit: 60-YP-100-SV $925
With a pulley change to J10: 60-100-J10 $688
or up amps 60-150-J10 $904
or adding the charge kit: 60-YP-150-J10 $1,111
However the XT-DF-170-J10 $984 is newer and will run cooler at about the same cost
.