I was told that the ITR ones are more balanced, is this true?? If so, what are the difference in the bottom end (block, rods) between the ITR and GSR? Thanks in advance!

 

They have the same rod stroke ratio but is counter weighted and balanced fromo what I've read. I have the ITR one and it's fine.

 

your right.

 

If i have the proper head work (valve springs, cams, retainers, etc), would it still be safe, using the GSR crank, to rev up to 9000 rpm without doing any work to the bottom end?

 

yes they are different..I have pics that show signifigant differences...

such as these:



ITR cranks have an emobossed 'R' on the actual crank itself and are wider on the counterweight fins.. when compared to the GSR crank..

 

Katman comes thru again!

 

you know it!

 

Thanks Katman! But i guess there is still the question.......can i rev up to 9000 rpm using the stock GSR crank and rods?

 

personally I think you can....just as long as your valve train and powerband allow it.

 

Katman, Ken from Benen told me if i have any questions ask you on this board and so far i dont think you have let anyone down.

thats great knowledge! how did you learn so much man, ever work at a dealer or anything..... or was it just pure fun and ripping motors apart with friends

 

heh thanks..

I learned all of my Honda knowledge by trial and error...and yes by the pure fun of being curious about Honda parts...engines..etc with friends.

 

thats the learning process....trial & error & exploration

 

Nice pics KAT!!

Also, the rod and crank bearing guides are different, GSR uses ABCD and ITR uses TUVWXYZ. Kinda a PITA when you use the GSR rods on the ITR crank but plastigage will get you within tolerance.

Good Luck,