Rottler H85A, Operation And Maintenance Manual

Page: 72 / 179

Section 5 Operating Instructions H85A Manual
www.rottlermfg.com
5-4
Step 1:
Start with part number 514-9-14J (270/325 grit) Diamond abrasive and hone to size with roughing load
of 50% and finish load of 40% unless cylinders become out of round then use 40% roughing and 30%
finishing.
Step 2:
Use part number 514-9-14L (550 grit) diamond abrasive as the second step of a three step process by
using plateau mode at 15% load and 80 rpm for 4 strokes.
Step 3:
Use part number 514-9-14H plateau brushes for 3 strokes at 15% load in the plateau mode at 80 rpm.
Dart Blocks And Darton Sleeves
Step 1:
Start by using part number 514-9-14K (170/200 grit) and honing cylinder bore to size with 50% roughing
load and 40% finishing load. Reduce load setting if there is a problem with maintaining proper bore
geometry.
Step 2:
Next step is to follow-up in the plateau mode with a part number 514-9-14L (550 grit) diamond abrasive at
15% load for 4 strokes at 80 rpm.
Step3:
Final step is to use 514-9-14H plateau brushes at 15% load for 4 strokes at 80 rpm.
OEM Engines That Are Force Induction Race Applications Or Nitrous Powered
Method 1: 2 Step Using CBN Stones
Step 1:
Start by honing the cylinders with part number 514-9-14K (170/200 grit) Diamond abrasive to size.
Roughing load should be set at 50% and finish load at 40% unless cylinder become out of round. Then
drop to 40% roughing and 30% finishing load. In this application most piston ring manufacturers want
RvKs in the +50 microinch (1.27 µm) category.
Step 2:
Use part number 514-9-35B (600 grit) CBN abrasive with a load of 15% for 4 to 6 strokes at 80 rpm.
Dart Blocks And Darton Sleeves That Are Force Induction Race Applications Or Nitrous Powered
Step 1:
Start with part number 514-9-14W (140/170 grit) diamond abrasive and hone to size at 50% rough load