New rods, initial torque up question?

When I put in my last set of new rods, the manufacturer said to torque the bolts, then release them, 5 times for the final torque.

On my new Brooks rods I don't see anything like that. It just says to bring them up in steps. I was just wondering what you guys do with new rods/bolts.

-Scouder

 

Thanks Mike. This is one of the questions that popped to mind while I was mopping the shop floor, getting it all clean to start assembly.

And you are right. The other rods were Oliver steel billets for my 427 side-oiler.

-Scouder

 

What does the multiple torqueing do? please explain

 

rods

On your last number, do not stop until the wrench clicks. One sooth long pull. Don

 

Michael Giannone (MGP Rods) is very adamant about "not" step torquing rod bolts. This is the procedure I follow per his instructions.
Blessings.........Ron C.

>Technical Advice
Torque Procedures and Specifications

The method need to achieve proper torque and fastener stretch will be identical for all connecting rods manufactured within our facility. The torque rating will be dictated by the number designated on the head of the fastener. Compare the number on the had of the fastener with the list below for proper torque specifications.

Before assembly in the engine takes place the connecting rods must be taken apart, cleansed and dried with compressed air. It is imperative that the serrations on the rod cap and rod body be free of dirt, oil and debris. Utilize extra caution when handling the cap and body, as the serrations must remain undamaged for proper assembly. Once in the engine place the rod cap on the rod body. Lubricate the threads of each fastener liberally with fifty(50) weight motor oil and thread the fastener into connecting rod until the head of the fastener just contacts the washer assembly. The use of fifty(50) weight motor oil is critical, as the use of any other lubricant will lead to improper fastener stretch. Using a slow and steady pass with the wrench torque each rod bolt. The "Step-Torque" method is an IMPROPER technique DO NOT USE this technique it will lead to improper fastener stretch. The use of a stretch gauge can be used to guarantee proper fastener torque and stretch.

Fastener #1003: 105/ft/lbs Fastener Stretch: 0.007"-0.0075"

Fastener #1004: 85/ft/lbs Fastener Stretch: 0.007"-0.0075"

Fastener #1008: 65/ft/lbs Fastener Stretch: 0.006"-0.0065"

Fastener #1009: 105/ft/lbs Fastener Stretch: 0.007"-0.0075"
Clearances

Per our recommendation the vertical clearance on rods for drag racing use should be .003-.0035" and the side clearance should be a minimum of .015" and maximum of .020". These specifications are for naturally aspirated engines for endurance applications. We have seen no advantage to opening up clearances beyond recommendations.

For nitrous-oxide applications our recommendations are the same as for naturally aspirated engines.
More Assistance

If we may be of assistance in answering any other questions please do not hesitate to contact us at 719-219-3017 or fax 719-219-3078. We are very happy to help in any way possible.

 

rod torque

That is great, do it between rounds Try and duplicate temp, and 50 wt. when you have 70 wt. + hot motors. Just listen to the manufacture It,s there stuff. + there name. Don