Connecting Rod Set
(Pro Journal / Chromoly H-Beam )
When 300 horsepower or more is expected, a stronger rod is recommended. LC Engineering’s Pro Chromoly H-Beam Rods will fit the bill. These H-Beam 4340 Forged Chromoly Steel Connecting Rods are manufactured from a two-piece forging process. This process forces the grain into the shape of a connecting rod, resulting in superior fatigue life.
The rod cap is forged separately so that the grain runs perpendicular to the load forces, which strengthens the rod. LC Engineering includes a higher content of nickel & chromium, which increases the strength & fatigue life without making the rod brittle. Every rod is shot peened to stress relieve the metal. LCE x-rays, sonic tests, and Magna-fluxes each rod to ensure quality. Every LC Engineering rod is heat-treated and includes 7/16" ARP 8740 bolts which can handle up to 210,000psi.
Each rod set is packaged in weight-matched sets end to end +/-5 grams! The LCE H-Beam connecting rods are 86 grams each lighter than stock Toyota connecting rod. When measuring in Grams that’s not a lot, but when you add it all up, that’s 3/4 pounds of less rotating mass. Less rotating mass means quicker throttle response, faster revving and less wear to the bearings and crankshaft. Silicon bronze bushings are inserted for a floating piston pin.
LC Engineering’s rods are ready to run; installation instructions & bolt lubricant are included. Complete set of 4 rods. Stronger and lighter than stock connecting rods, they come in sets of four. Includes ARP rod bolts and Moly Lube.
Toyota Journal VS. Pro Journal
Tech Note.
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LENGTH
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WEIGHT
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PIN SIZE
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HP RATING
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DESIGN
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5.819"
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673g Approx.
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0.866"
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600HP
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H BEAM
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NOTE: These rods have the pro journal and made to fit the LC Engineering Pro Crankshaft only. Will not fit stock Toyota crankshaft.
Contact our Tech Support Line for further information at 928-575-2174.
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Note: Images are for illustration purposes only. Images may not represent the product listed. Please contact customer service with any questions or concerns: 1-928-505-2501.
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Thank you for purchasing LCE Performance H-Beam connecting rods. We strive to maintain the highest quality products and services. To ensure optimum service, please read the following instructions thoroughly. Proper installation is crucial to insure dependable service life. If you need any further assistance or have any questions, please contact our technical department at (928) 855-6341.
Disassembly Notes:
- Always disassemble and thoroughly clean all rod bolt surfaces. Do not use metal stamps to number rods, Felt tip markers or tool maker's dye are an excellent alternative.
- Rod bolt threads and underside of head of the bolt should be lubricated with ARP Moly
Assembly Lube. Do not use oil or Loctite. Cap should be seated on rod by aligning cap by
hand and lightly tapping into place. Alternate tightening bolts to avoid cocking cap.
- If any other lubricant is used on bolt, bolt stretch method must be used due to different
Viscosity lubricants. Improper bolt torque will cause premature bolt failure.
- Rod bolts are manufactured from high grade steel and are vulnerable to corrosion. Care should
be taken when handling fasteners to prevent exposing to moisture. Bolts should be handled
by the bolt head. Bolts should always be lubricated prior to handling or storage.
Disassembly Instructions:
For disassembly break bolt loose ¼ turn each rod bolt alternating sides until loose.
To accurately determine the life of a bolt, it is recommend that a log of the bolts original free-standing
(un-torqued) length should by kept and recorded upon subsequent tear downs for inspection. The
freestanding length should be checked against its original length. If there is an increase of .001" or more,
or if there is any permanent deformation or galling, the bolt should be replaced.
Reassembly Instructions:
When installing these connecting rods, LC Engineering recommends following the direction of the “Original” tang orientation from Toyota (which are all located on the drivers side of the block). On Part# 1013198 (Toyota Journal Rods) the LC Engineering logo will face the rear of the block.
NOTE: (22 Stroker) You must always check engine clearances when changing internal engine components! The
oil galley may need to be clearanced on some applications. You should have a minimum of .030”
clearance between the rod bolt head and the block.
Clearances:
Listed below are typical clearances and will vary according your application. Refer to
manufacturer's specifications for your application. See Factory service manual.
Do NOT modify rods or rod bolts for clearance.
Rod bearing oil clearance: - .0015"-"0035"
Piston pin clearance: - .0005" - .0015"
Rod side clearance (single rod journal): - .007"-.015"
Rod-to-block: - .030" minimum
Wristpins:
Bent or out of round wrist pins will cause deformation of pin bores. Check your pins! We do
not recommend the use of pins of less than .110” wall in normally aspirated engines and
.150” wall in forced induction applications. These are minimum wall requirements for
Chrome Moly or equivalent materials. We can sell you pins if needed.