Jesel INS-24001 User Manual

INS-24001

VALVETRAIN INNOVATION

1985 Cedarbridge Ave

Lakewood, NJ 08701

732-901-1800

STEP 1: INSTALL INTAKE AND EXHAUST STANDS

LEAVING 1/4-20 ATTACHING BOLT SNUG BUT LOOSE.
APPLY THREAD SEALANT TO INTAKE BOLT AND OIL TO
EXHAUST BOLT. TORQUE BOLTS TO 60-65 FT/LBS ON
ALUMINUM HEADS AND 65-70 FT/LBS ON CAST IRON
HEADS. USE THE LONGEST BOLT POSSIBLE FOR

MAXIMUM THREAD ENGAGEMENT.

Instruction Sheet

Chevrolet BB

Individual Bolt Together Stands

STEP 2: ONCE THE INTAKE AND EXHAUST STANDS

ARE PROPERLY FASTENED, TORQUE THE 1/4-20 x
3/4” JOINING BOLT TO 12 FT/LBS. IF THE STANDS ARE
SHIMMED TO COMPENSATE FOR A LONGER LENGTH
VALVE, THE STANDS MAY NEED TO BE MODIFIED TO

SECURE THEM TOGETHER.

STEP 3: CHECK FOR PUSHROD TO CYLINDER HEAD

INTERFERENCE AND CORRECT IF NEEDED. THE
PUSHROD SHOULD NOT BE ALLOWED TO TOUCH THE
HEAD OR BLOCK THROUGH ANY PORTION OF ITS
TRAVEL. MEASURE FOR PUSHROD LENGTH NEEDED
AN D ORDER PUSHRODS. IN ST RUCTIONS FOR
MEASURING PUSHROD LENGTH ARE INCLUDED WITH

PUSHROD LENGTH MEASURING TOOL TOL-29450.

STEP 4: LUBRICATE THE TIPS OF THE INTAKE AND

EXHAUST PUSHRODS USING THE SUPPLIED HIGH
PRESSURE LUBE. INSTALL EACH ROCKER ARM WHEN
THE CAM LOBE IS ON ITS BASE CIRCLE AND TORQUE
THE 5/16-18 X 1” SHAFT BOLT TO 26-28 FT/LBS. NEVER
TORQUE SHAFT BOLTS WHEN THE ROCKER IS UNDER

ANY SPRING LOAD AS SHAFT DAMAGE MAY OCCUR.

1985 Cedarbridge Ave ∙ Lakewood, NJ 08701 ∙ Phone: [phone] ∙ Fax: [phone]

THESE INSTRUCTION SHEETS ARE INTENDED AS REPRESENTATIONS ONLY. JESEL IS IN NO EVENT LIABLE FOR CONSEQUENTIAL DAMAGE, INSTALLATION COST
OR OTHER COST OF ANY NATURE. NO REPRESENTATIVE IS AUTHORIZED TO ASSUME FOR JESEL ANY OTHER LIABILITY IN CONNECTION WITH ANY JESEL

PRODUCT. NOT RESPONSIBLE FOR TYPOGRAPHICAL ERRORS.

revised 04/08

AVAILABLE SERVICE TOOLS

TOL-19210 T-45 Torx Socket
TOL-19221 T-50 Torx Socket
TOL-29400 5pc Checker Pushrod
TOL-29350 Stand Height Checker, 5/16” Stem
TOL-29351 Stand Height Checker, 11/32” Stem
TOL-29352 Stand Height Checker, 3/8” Stem

TORQUE SPECS:

5/16-18 T-45 Shaft Bolt 22-25 lbs / ft
5/16-18 ARP 12pt Shaft Bolt 28-32 lbs / ft
3/8-16 T-50 Torx Head 45-47 lbs / ft
7/16-14 T-50 Stand Bolt, Into Aluminum 60-65 lbs / ft
7/16-14 T-50 Stand Bolt, Into Cast Iron 65-70 lbs / ft
Adjuster Nut 22-27 lbs / ft

Torque specs listed above are the recommended torque specs when
using 30wt engine oil as a lubricant. Torque specs will be lower if using
a Moly based lubricant. To convert to Newton/meters, multiply lbs-ft by

1.356. The torque values listed are intended to be for general information.
Actual torque values may vary depending upon your application.

INSTALLATION CHECK LIST

ROCKER SERVICE PARTS:

Part Number Description
ADJ-20230 Cup Style Valve Lash Adjuster
ADJ-20480 Ball Style Valve Lash Adjuster
WSH-29800 Valve Lash Adjuster Washer
NUT-24500 Valve Lash Adjuster Nut
BRG-20610 Shaft Bearing, 9/16 ID x 3/4” Long
BRG-20620 Shaft Bearing, 9/16 ID x 1/2” Long
RNG-26210 Rocker Retaining Ring

ADJUSTER OPERATING RANGE

THE OPERATING RANGE FOR THE LASH ADJUSTER IS 1/4 TO 2

TURNS OUT FROM THE SEATED POSITION. THE ROCKERS ARE

SHIPPED FROM JESEL WITH THE ADJUSTERS SET 1 TURN OUT

FROM THE SEATED POSITION. IF ADJUSTER IS MORE THAN 2

TURNS OUT, USE A LONGER PUSHROD. IF ADJUSTER IS LESS

THAN 1/4 TURN FROM SEATED POSITION, USE A SHORTER

PUSHOD. NEVER MODIF Y ADJUSTER COUNTERBORE TO

COMPENSATE FOR A PUSHROD THAT IS TO LONG.

CHECK STAND HEIGHT (IF APPLICABLE)

CHECK FOR PUSHROD CLEARANCE

CHECK FOR VALVECOVER CLEARANCE

DETERMINE PUSHROD LENGTH

PRELUBE PUSHRODS / ADJUSTERS

TORQUE ALL HARDWARE TO SPEC

WARNING

◘ IF IN DOUBT, CALL JESEL TECH DEPT AT [phone].

◘ MAKE SURE PUSHROD TIP COMFORMS TO ADJUSTER CUP.

◘ AP PLY TH REA D SEA LA NT TO ALL BOLT S EXP OSE D TO

WATER.

◘ DO NOT DEGREASE ROCKER AND RUN WITHOUT

LUBRICATION.

◘ DO NOT LET PUSHRODS RUB AGAINST CYLINDER HEADS OR

BLOCK.

◘ DO NOT BOLT DOWN OR REMOVE ROCKERS UNDER ANY

SPRING LOAD.

◘ ALWAYS LUBRICATE PUSHROD TIPS AND ADJUSTERS WITH

SUPPLIED LUBE.

◘ APPLY THREAD SEALANT TO ALL BOLTS PROTRUDING INTO

INTAKE PORTS.

◘ DO NOT OVER-TORQUE ADJUSTER NUTS - A LWAYS FOLLOW

TORQUE SPECS.

◘ DO NOT RUN WITH ADJUSTER MORE THAN 2 TURNS OUT FROM

SEATED POSITION.

◘ DO NOT MACHINE ADJUSTER COUNTERBORE TO COMPENSATE

FOR A LONG PUSHROD

◘ DO NO T “FLY- CUT ” U ND ERS ID E OF ROC KE R AR M FOR

ADDITIONAL SPRING CLEARANCE.

VALVE LASH ADJUSTMENT

1) ROTATE ENGINE UNTIL EXHAUST ROCKER BEGINS TO OPEN.

SET INTAKE LASH TO DESIRED SPEC.

2) ROTATE ENGINE UNTIL INTAKE ROCKER BEGINS TO RETURN

FROM FULL LIFT. SET EXHAUST LASH TO SPEC.

3) REPEAT FOR RE MAINING CYLIN DERS FOLLOWIN G THE

FIRING ORDER.

Maintain your valvetrain
properly with Logan-Smith’s
Spring Pressure Tester and
Torque Wrench Valve Lash
tool.

TOL-PC100

0 - 600 lbs seat pressure

TOL-TQ100

Torque wrench preset to 25 FT / LBS

www.jesel.com

[e-mail]

1985 Cedarbridge Ave ∙ Lakewood, NJ 08701 ∙ Phone: [phone] ∙ Fax: [phone]

THESE INSTRUCTION SHEETS ARE INTENDED AS REPRESENTATIONS ONLY. JESEL IS IN NO EVENT LIABLE FOR CONSEQUENTIAL DAMAGE, INSTALLATION COST
OR OTHER COST OF ANY NATURE. NO REPRESENTATIVE IS AUTHORIZED TO ASSUME FOR JESEL ANY OTHER LIABILITY IN CONNECTION WITH ANY JESEL

PRODUCT. NOT RESPONSIBLE FOR TYPOGRAPHICAL ERRORS.

revised 07/08