Rottler H85A - Oem Engines that Are Force Induction Race Applications or Nitrous Powered; Method 2: 3 Step Using Plateau Brushes; Method 1: 2 Step Using CBN Stones; Nascar;Prostock Applications

Section 5 Operating Instructions H85A Manual
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5-5
and 40% nish load.
Step 2:
Follow -up with part number 514-9-35B (600 grit) CBN abrasive with load pressure of 15% with rpm of 80
for 4 to 6 strokes.
Oem Engines That Are Force Induction Race Applications Or Nitrous Powered
Method 2: 3 Step Using Plateau Brushes
Step 1:
Start with part number 514-9-14K (170/200 grit) diamond abrasive and hone to size at 50% roughing load
and 40% nishing load. Reduce load setting if there is a problem with maintaining proper bore geometry.
Step 2:
Follow-up with part number 514-9-14L (550 grit) diamond abrasive in the plateau mode at 15% load for 4
strokes at 80 rpm.
Step 3:
Continue with part number 514-9-14H plateau brush in plateau mode at 15% load for 4 strokes at 80 rpm.
Method 1: 2 Step Using CBN Stones
Nascar/Prostock Applications
Step 1:
In this form of racing only high performance materials are used so there is no need to discuss OE blocks.
Start by honing block to size with part number 514-9-14J (270/325 grit) Diamond abrasive at rough load of
50% and nish load of 40%.
Step 2:
Follow-up by using part number 514-9-21G (800 grit) Diamond abrasive for 4 to 6 strokes at 15% load
with rpm of 80.
Special Procedure for Subaru Blocks
Step 1:
Using 514-9-32E 80 grit stones,remove stock until .002” from nish size. Use 45% for the rough load and
35% for the nish load.