Edited: 12/7/07


Modified by D at 3:04 PM 12/7/2007

 

Also the ITR crank has an R stamped on it.

 

The ITR crank has counterweights and its lighter than the GSRs
more specs here.
http://www.typeracing.com/specs.html


[Modified by TypeR 01 886, 1:22 AM 2/24/2003]

 

Actually, the GSR crank is lighter. By about 4lbs.

The counterweights on the ITR crank make it better in the upper RPMS and balance out the lighter pistons, but add weight.

 

I always thought the GSR crank was lighter?

 

D..

my fine feather friend can you still give those pointers that Steve gave you about the diff. btwn the two cranks. I cant tell just by looking at the pics...sorry still learning

 

True.

Again, thanks to SGT for clearing up my blindness:



D

 

Umm, BOTH cranks have counterweights and the ITR crank is HEAVIER than the GSR crank.

 

I totally did not see that from just looking at the pictures. I can't believe i missed that! Thanks for the circled pics

 

I thought that the GSR pistons were actually lighter than the R's.

Only based on the displacement of them..

 

i would think they are. but whats the relevance, we are talking about crank weight

 

Maybe it's relevant b/c heavier pistons require more counterweighting, no?

 

It was merely based on this comment...

 

sorry, misseed that one.
but yeah, the gsr pistons are lighter

 

alirte ppl.. who cares which pistons are lighter, cuz i'll say that u r not going to run with stock pistons (or "not yet")

 

Nice poster ~

 

So let me get this straight:
Type R Pistons Weight < GSR Piston Weight
Type R Crank Counterbalance > GSR Counter balance

So basically, it seems like what your saying is that Honda is chasing it's tail?

Granted dynamically speaking the larger circumference of the rotating piston mass should require a greater mass is a smaller circle at the crank. But, are the GS-R's really that far out of balance?

*This is all interesting as I have a spare Type R crank sitting up stairs, and I am trying to decide what to do with it.
But this also dispels the notion that both cranks are equal, due to the photos


[Modified by ppihctyper, 3:52 PM 2/24/2003]

 

Where did you get the poster in the background? I want one

 

They pop up on Ebay every once and a while.

 

thanks for the tech

 

and I have a few laying around

Blake: GS-R pistons and crank are lighter than ITR pistons and crank.

 

in relevance to the poster...I got mine from the dealer back when I bought my car a few years ago. It was hanging in the salesman's office and I wanted one but they were already supposedly discontinued, so he ripped it off the wall and gave it to me

 

isnt it true that the crankshafts must be placed standing, rather that laying down, due to the fact that the crank is acutally brittle and can warp if laying down. A mechanic told me this once before

 

never heard brittle and warp in the same sentence together before

 

comedy hahaha