the type r crank is heavier than the gsr crank, yet i believe it has 8 counterweights instead of 4, giving it more stability for high RPM usage.
(unless they have the same amount of counterweights but the type r's being heavier, i forget which is which)

if a gsr crank is balanced and micropolished, would it not be better than a type r crank, even if the r crank is balanced and micropolished as well?

my logic- lighter rotational mass

thanks for your input.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by LSVTEC_DC4 &raquo;</TD></TR><TR><TD CLASS="quote"> Ok, first off though what is your setup and plans?</TD></TR></TABLE>

what does it matter?

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by LSVTEC_DC4 &raquo;</TD></TR><TR><TD CLASS="quote">It matters a whole lot High reving motor or High low torque and alot of other possibilities...</TD></TR></TABLE>

great, instead of the noob questions, i get noob answers.

no offense bro, but look at your reply....high low torque?? does a heavier crank cause more torque or something?? my logic is lighter rotational mass...and that i don't see any advantage using an R crank over a gsr crank...is that so hard to understand?

seems easy enough, but no one has ever brought this up before.

 

EDIT:**** i complety miss read your question...but i would have to say gsr crank vs an ls crank, think of that?...Ls crank!

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by LSVTEC_DC4 &raquo;</TD></TR><TR><TD CLASS="quote">EDIT:**** i complety miss read your question...but i would have to say gsr crank vs an ls crank, think of that?...Ls crank!</TD></TR></TABLE>

i already have. in fact, that is what i'm going with for my 2nd car.
ls crank balanced and micropolished to be exact, with custom length rods on forged pistons with a raised pin to improve the RS ratio to equal the type r/gsr's RS ratio. overall, without getting into details, i'll get a little more torque throughout the powerband with a little less high end hp..shifts your powerband down..but i'm not trying to rev super high.

anyways back to the topic/original question...which mentions nothing of an LS crank.

 

Are you also going to be knife edging these cranks to lighten them further? If yes, it doesn't matter which one you pick.

If not, I would use the balanced and polished gsr crank over the balanced and polished ITR crank simply because of weight savings.

 

insightful question... not so insightful replies.

Consider 2 cranks both perfectly balanced, only one is heavier than the other. THe only benefit I would see is it's increased rotational inertia.

For instance, consider the flywheel example, lighter flywheels carry less inertia,

Advantage: Increase rotational speed (rpm) faster due to less mass to accelerate
Disadvantage: "less torque off the line" meaning less stored rotational inertia due to decrease in mass.

By having more mass, the type-r crank would be able to absorb more force and stay more stable at high rpms.

So I guess the conclusion is, both being perfectly balanced, the GSR crank should make more power, but the Type-R crank more reliable.

Up to you to decide what's better, it's all about compromises... g'luck

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by SilverCIVIC96 &raquo;</TD></TR><TR><TD CLASS="quote">insightful question... not so insightful replies.

Consider 2 cranks both perfectly balanced, only one is heavier than the other. THe only benefit I would see is it's increased rotational inertia.

For instance, consider the flywheel example, lighter flywheels carry less inertia,

Advantage: Increase rotational speed (rpm) faster due to less mass to accelerate
Disadvantage: "less torque off the line" meaning less stored rotational inertia due to decrease in mass.

By having more mass, the type-r crank would be able to absorb more force and stay more stable at high rpms.

So I guess the conclusion is, both being perfectly balanced, the GSR crank should make more power, but the Type-R crank more reliable.

Up to you to decide what's better, it's all about compromises... g'luck</TD></TR></TABLE>

good stuff. i still have people tell me that when they drag race, they've gotten better times with a lightweight flywheel.

remember itr from the factory does come with the heavier crank, but the rods are lighter, and so is the itr flywheel.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by asubennett &raquo;</TD></TR><TR><TD CLASS="quote">Are you also going to be knife edging these cranks to lighten them further? If yes, it doesn't matter which one you pick.

If not, I would use the balanced and polished gsr crank over the balanced and polished ITR crank simply because of weight savings. </TD></TR></TABLE>

hmm from what i've researched, most folks don't like knife edging honda cranks. it's 5am right now so i don't feel like going into details

 

ITR crank is better for high rpm usage and over all.

It has a heavier counterweight for every rod journal to offset the weight on the rod journal which under load is more than just weight when spinnig 9k+. You should also see more even bearing wear, amoungst other things.

 

Its my understanding that gsr vs itr crank stock for stock, that the itr crank is 20% more stable after 8000 rpm's. I have a few customers running stock B18C5 bottom ends with some valvetrain upgrades that often shift around the 9500-9600 rpm range which is suck a nice long powerband through each gear when running all motor.