I have questions regarding the Crankshaft of a 2004 Honda Accord EX, J30A4 3.0L (2997cc) engine.

1) Is this crankshaft forged?

2) What was the STEEL CLASSIFICATION (i.e. 5140, 4130,...) used in the construction of this crankshaft?

3) What type of HEAT TREATMENT did this crankshaft undergo by the Honda i.e. maximum temper temperature, type of quench, etc?

I am adapting to this engine modified Oliver Lite Weight Connecting Rods built for a small block 327 chevy V-8 having 2.000 inch crankshaft rod journals. The Oliver connecting rod are 6.300 inchs long.

I am considering welding and heat treating this crankshaft both High heat treatment (1,400 degrees F) and Cryogenic heat treatment (320 degrees F below zero).

I want to strengthen the crankshaft.

Answers to these questions would be helpful in the welding, and high heat treatment of this crankshaft.

 

i don't have the answers but the crank is usually very durable on honda motors and can take a fair amt of hp......