JIMS Box 2 1208-1352 (all models of 120, 131, or 135 Alpha, Beta and Evo Mount Engines) User Manual
Page 17
555 Dawson Drive, Camarillo, CA 93012 Phone 805-482-6913 • Fax 805-482-7422
16
Rev I
8-12
No.1208-1352
A Division of Thiessen Products, INC
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• These marks will be used as a guide to tighten all head bolts an addi-
tional 1/4 of a turn (or 90 degrees). See Fig. 68.
• After all 8 head bolts have been tightened an additional 1/4 turn (or
90 degrees), all 8 head bolts need to be loosened to allow seating-in
of the gaskets.
• Loosen the head bolts using the same sequence described in Fig. 66,
1/4 of a turn at a time until each is loose enough to turn with your
fingers.
• After all 8 head bolts can be turned with your fingers start the torque
sequence again.
• Torque each head bolt to 8 ft/lbs, following the sequence in Fig.66.
• Continuing in the same sequence, torque each bolt to 18 ft/lbs.
• Make a fresh mark on the head bolts as pictured in Fig. 67.
• Tighten all 8 head bolts in sequence an additional 1/4 turn or 90
degrees as pictured in Fig. 68.
JIMS 120, 131 or 135 Race Kit torque sequence
STEP 10: Compression Release Installation
Preparation:
• Unwrap and clean the threads of the compression releases. See Fig.
69.
• Install the sealing washers.
• Lightly lubricate, with copper anti seize lube, the threads and sealing
washers.
• Make sure the threaded holes in the heads are clean and empty.
Installation:
• Thread a compression release into its head.
• Using your 13mm deep socket torque to 12 to 18 ft/lbs.
• Repeat for other compression release.
Note: Before proceeding, apply a small amount of moly lube to the
spark plug threads and the spark plug threads in the head, and
then thread the spark plugs a few turns into the heads.
• The purpose of this is to prevent anything from falling into the
cylinders.
• Do not torque them at this time as they will be removed to make the
engine easier to rotate during pushrod installation and adjustment.
See Fig. 70
Year
Model
1st
2nd
3rd
Loosen
4th
5th
6th
2003-4
“A” & “B” 8ft/lbs 18ft/lbs
1/4 turn
Loosen
8ft/lbs
18ft/lbs
1/4 turn
Fig.68 - 1/4 turn
Fig.69 Compression release
Fig.70 - Thread spark plug