are they the same?

physically?

well, we compared my friends ITR crank pulley vs GSR crank pulley everything matches up except that the lines for timing, etc.. is in different location. would that affect when you check the timing?

 

I was told that the ITR pulley is smaller.

 

yeah, i heard that ITR's are smaller, but who care?!?! everyone know the answer if you want to compare a stocl itr with stock gsr

 

i've heard of reliability issues with aftermarket (performance) crank pulleys...
so maybe an OEM pulley that is a better performing part than a stock
GS-R's can be put on a GS-R for high performance w/out sacrificing reliability?
that answer might be the Type R crank pulley...
me owning a GS-R ..that would be my question...




[Modified by EVOL, 8:36 PM 5/14/2002]

 

According to SGT the difference in size between the two crank pullies is very minute. Meaning you could not tell a difference at all.

 

ITR pulley is noticably smaller in diameter than other b-series.
If you want a better pulley, i would recommend an unorthodox crank pulley.

 

If you want to beat your bearings to death I would recommend an ultra-light underdrive pulley. I removed the underdrive pulley from my GSR and put an ITR pulley on. A little smaller in diameter and a little lighter than the GSR pulley yet still retains the harmonic diffuser. The N1 is no better than an unorthodox, it has no way of reducing harmonics. Those pulleys are made for throw away engines (rebuild after every coupe races.)


[Modified by CKDC2, 5:28 AM 5/15/2002]


[Modified by CKDC2, 8:22 PM 5/20/2002]

 

I have just replaced mine with a N1 Pulley (thanks Leo!), and that sucker is really tiny compared to the ITR one.

 

Riiiight. Probably didnt balance anything either.
My bearings look new after 50k miles with the aluminum pulley, as do the other
motors I have built. If you do it right, no problems; dont however and......

 

SGt just owned j00..make sure you know your sheit before posting..hehe, ive learned the hard way a few times. hehe.

 

Why would you be tearing the engine apart at 50k to check the bearings if it was balanced and blueprinted. I would think a balance engine assembley would last longer than 50k without any mechanical failures.

Take a deep breath and read from this link, all you questions should be answered here.

http://www.supras.com/~riemer/sonict...ech/dinan.html

And for the record I don’t give a F*** what you put on your engine, if you want to gamble with your bearings, go for it. Not everyone has the means to rebuild their engines for the fun of it. Why gamble? You'll install an extra strong timing belt w/ Toda cams just incase, why not lose 5-6 hp and not take a gamble with wrecking your bottom end, think about it. It's been documented.

This guy asked a question and I was replying with the knowledge I have. Let him make an educated decision based on the facts we can give him.

OWNED, I think not



[Modified by CKDC2, 6:17 AM 5/15/2002]

 

this is the type of useful **** that makes honda-tech rule and that bullshit guy with the SOHC stock civic talkin about how he supposedly ran a 12 second quarter mile on street tires.
even if i get flamed i respect the fact that i got taught something.

mannnn it was just months ago when a guy i met said
"you can't change the cams on a Type R...cuz of the vtec.."

no disrespect to civics...or sohc stock civics to be specific..lol...

 

Why? For peace of mind mainly. I had never run a motor to such extremes
before this one, and wanted to see how it was holding up. Needless to say,
even with the aluminum pulley, it couldnt have looked any better.
Its not really a gamble, its really about doing things properly the first time around.

imho, dinan isnt really the best source for info either. None of their products
are overly impressive, both for bmw and honda.

 

although...when i visited the Jun facility in signal hill years ago with my friend for his hondaprelude.com visit...they were talkin about crank pulleys too, and how the aftermarket ones don't absorb the shock or some ****..he said harmonic something...
it was years ago...
i read the explaination on the dinan site and it makes more sense...
Dinan is questionable..but Jun?
well..to each his own i guess...
if you ask me, risking 1400 for a hytech header is a safer gamble LOL

 

[QUOTE]imho, dinan isnt really the best source for info either. None of their products
are overly impressive, both for bmw and honda.[/QUOTE

I think alot of people in the motoring industry would disagree with that statement.

Of course we all know what Larry at ENDYN thinks.

So the consensus is this... if you have a fresh perfectly balanced and blueprinted motor than go for it, maybe it will last maybe it won’t, gamble the shortblock. Even though Honda does a great job of building a motor they are not balanced and blueprinted as a race prep motor would be as you describe your engines (rods, pistons weighed and matched etc.)

Than by your reasoning you would agree that it wouldn't be a smart idea to put an underdrive pulley on a factory unbalanced and blueprinted motor. I think that covers about 95% of the people on this board.



[Modified by CKDC2, 8:23 PM 5/20/2002]