What are the specs for 340 connecting rod (cast #2899496) large end?

[dibbons]

I'm in Mexico and need to have the large end of a set of 340 connecting rods measured for reuse/suitability/wear/reconditioning. Can't find any reconditioning specs online or in service manuals. What should the large end measure when torqued without the bearing installed? Thank you.

 

[Bewy]

Brg/housing bore: 2.2500/2.2505"

 

[66fs]

Brg/housing bore: 2.2500/2.2505"

Or 2.2498 to 2.2505 per racing manual (.0002 undersize)

 

[dibbons]

Or 2.2498 to 2.2505 per racing manual (.0002 undersize)

Is the undersize variant to provide more bearing "crush"?

 

[66fs]

Is the undersize variant to provide more bearing "crush"?

and stay "round" longer.

 

[Bewy]

My info in post #2 comes from the Sealed Power Engine Brg catalog, 284 pages.

 

[66fs]

My info in post #2 comes from the Sealed Power Engine Brg catalog, 284 pages.

You are not wrong. Rods resized, or measuring the size you posted will be fine. The Direct Connection Racing Manual suggested .0002 undersize based on experiennce. The smaller size is preferred, within range, provides more crush (see post #4) to last longer.