Just curious if the pistons and rods are forged from the factory or not. Thanks...

 

I would say search but this might be too much of a no brainer for it to have been covered anywhere! HOpe this answers your question guy .

 

I did a search, but came up with no results.

 

I don't know for absolute sure, but I'm willing to bet they are cast like all the other honda pistons.

 

yes the internals are cast.

 

the k20 are cast i think also .

 

Josh at http://www.itrsport.com saved a lot of the earlier published material on his site.
Here is the portion wrt motor internals:

Exclusive pistons and connecting rods have been developed for the Type R. The high-pressure die cast piston crown has been reshaped to increase the compression ratio to 10.6:1 and valve pockets deepened to accommodate the increased valve lift and duration of the Type R. The piston skirt is coated with molybdenum to minimize friction and allow it to withstand high-rpm operation, while specially designed oil paths have been machined into the underside of the piston to provide additional lubrication to the piston pin.

Extreme care was taken in the forging and machining of the connecting rods to ensure each engine of a precisely matched set of connecting rods. Like in the GS-R, the rods are constructed of special high-strength steel for a rigid yet lightweight component. Extremely accurate machining of the Type R connecting rod minimizes variation between parts. Connecting rod bolt elongation has been strictly controlled for uniform fastening force. This is achieved through manually assembling each and every connecting rod for the Type R, and the result is a significant reduction of fastening force variance.

The combination of lightweight pistons and connecting rods helps to reduce reciprocating inertia and enhance throttle response significantly.

Piston Summary:
High-pressure die cast piston crown has been reshaped to increase compression ratio from 10.0:1 up to 10.6:1
Valve pockets deepend to accommodate the increased valve lift and duration
Piston skirts were made ligher in order to lessen the inertial mass
Piston skirts coated with molybdenum to minimize friction and allow it to withstand high-rpm operation (also used in the NSX)
Injectors installed on the underside of the pistons allow for improved cooling, and prvent the pistons form getting "burned-in"
Combination of lightweight pistons and connecting rods help reduce reciprocating inertia and enhance trottle respnse significantly

Connecting Rod Summary:
Connecting rod bolt elongation has been strictly controlled for uniform fastening force
Manually assembled for the Type R to reduce fastening force variance
The specially designed rods have the letter "R" molded onto them
Rods are constructed of special high-strength steel to withstand higher rpm's and are still lighter than GS-R connecting rods

 

rods may be forged,

pistons should be cast....

infact, i'm not entirely convinced that the rods are forged...perhaps a semi-forging process such as SSR takes for their wheels....to save cost at the same time as offering a better than cast situation.

 

Thanks guys...