I'm currently building a mild all-motor B18c setup. I have a set of ctr pistons pressed onto itr rods but have been having problems finding the right size rod bearings using a gsr crank. If i end up using GSR rods will i be missing out on much? What is the difference between GSR rods v. ITR rods?

 

One difference is that you can arrange the bearings in half-steps.. and the rods are marked in half steps.

The other is that the weight differences between rods is much smaller.

Basically, they're just GSR rods which are well matched.. and, using the codes you can tweak 'em down to a finer degree than plastigauge will show!

If your rods are 24 or 25, my recollection is that's in the middle.. What you need is someone with the table for an 'R'.

One such person is 'Arturbo' -- try IM. He helped me with a similar challenge a day or so ago.

Mark

 

All my rods are stamped '24'. The gsr crank journals are marked C B C B. The itr bearings chart does NOT correspond with a C24, B24, C24, B24........it's crank is not labeled using the beginning of the alphabet.

 

GSR\ITR Rod Bearings are the exact same part numbers smart guys...you just need to get the correct sizes for your rods\crank.

Suprdave

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by bb6 &raquo;</TD></TR><TR><TD CLASS="quote">All my rods are stamped '24'. The gsr crank journals are marked C B C B. The itr bearings chart does NOT correspond with a C24, B24, C24, B24........it's crank is not labeled using the beginning of the alphabet.</TD></TR></TABLE>

ITR crank has a different labeling codes on the crank than the GS-R crank. the rods for both ITR and GS-R are the same, but you can try to use half and half, for example, if you're clearance is too tight, and you are using a yellow, try to use yellow on the bottom half and go one step looser like green on the upper half, then remeasure it at that point.

stan

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Flamenco-T &raquo;</TD></TR><TR><TD CLASS="quote">

ITR crank has a different labeling codes on the crank than the GS-R crank. the rods for both ITR and GS-R are the same, but you can try to use half and half, for example, if you're clearance is too tight, and you are using a yellow, try to use yellow on the bottom half and go one step looser like green on the upper half, then remeasure it at that point.

stan
</TD></TR></TABLE>

Mine has W & X... which I think are either side of 'center'...

x 24= brown, brown
w 24= green brown

You may have to do what I'm doing, and order enough to plastigauge..

Like I said, you might also be able to get some help from Arturbo.

Mark

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by msilbernagel &raquo;</TD></TR><TR><TD CLASS="quote">

Mine has W & X... which I think are either side of 'center'...

x 24= brown, brown
w 24= green brown

You may have to do what I'm doing, and order enough to plastigauge..

Like I said, you might also be able to get some help from Arturbo.

Mark</TD></TR></TABLE>

mark: my point to him was to get the bearing that he's having problem trying to get perfect clearance with, then move it up a step up or down.
since he has no chart for ITR, it's kinda hard to tell, and what I can prolly do for him is to look at my helms and check out both chart for ITR and GSR and kinda plot a bearing codes based on both bearing chart.

maybe we're talking about the same thing with different wording.

PS: I am Arturbo's roomate and we have two blocks right now we're working on

 

Do you guys think that all this is worth having ITR rods over GSR rods? Are they that much lighter and betteR?

 

just get aftermarket rods if your building the bottom up.

but the ITR rods, pistons, and flywheel are lighter than the GSR.
but the GSR crank weighs a little less than the ITR crank.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by bb6 &raquo;</TD></TR><TR><TD CLASS="quote">Do you guys think that all this is worth having ITR rods over GSR rods? Are they that much lighter and betteR?</TD></TR></TABLE>

not really, ITR rods is pretty much the same as GS-R, stock rods is usully a weak link..

wanna buy some eagle ? I have a set for GS-R..at least I can tell you which bearing chart to use heheh

stan

 

i just confirmed part numbers with my acura parts program
13210-p73-000 is the same for itr and gsr

 

Get yourself a nice set of forged rods and call it a day. good luck

 

Yup, I think you're right.

I just ordered a set (from Jeff @ IB) which, hopefully, brackets the sizes I'll be needing.. so I can plastiguage them and complete the order. I'm getting green, brown, and black so I can check the most likely half steps for best fit.

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Flamenco-T &raquo;</TD></TR><TR><TD CLASS="quote">

mark: my point to him was to get the bearing that he's having problem trying to get perfect clearance with, then move it up a step up or down.
since he has no chart for ITR, it's kinda hard to tell, and what I can prolly do for him is to look at my helms and check out both chart for ITR and GSR and kinda plot a bearing codes based on both bearing chart.

maybe we're talking about the same thing with different wording.

PS: I am Arturbo's roomate and we have two blocks right now we're working on</TD></TR></TABLE>

 

there's some good info on this thread. i understand what Stan is saying about playing with the sizes for the bearings. you can't always go with the markings on the rods and crank. of course those markings will help get you within a certain range etc. but journal wear or using rods out of another block will require the clearance checking using platigauge (or some other method, but i use plastigauge).

as for the Eagle rods instead of the OEM ones, i think that's a good idea.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Flamenco-T &raquo;</TD></TR><TR><TD CLASS="quote">

stock rods is usully a weak link..
</TD></TR></TABLE>

For a "mild b18c?" I don't really think it matters if it truely is mild.