9tailsfox

Hi, I'm new in this forum. So this is my 1st thread. Well it might be some body already asked. But still I need to know this. Well as usual that we know ITR 96 spec compare to ITR 98 spec is Factory mild pnp by hand to machine, 4-2-1 header to 4-1 stainless steel header, final drive 4.4 to final drive 4.75. beside all these, is there any idea that 96 spec to 98 spec crank shaft difference? maybe more weight on 98 spec? Currently I'm using b16a head with ITR B18C R 96 Block. Thats what they told me by pro mechanic according my JDM B18C R Block serial start 1900xxx. Currently Camshaft using B16B, Piston using B16B 0.25mm, 4-2-1 EK9 header,Using final Drive 4.7, B16a cylinder head. Well currently I would like to change my cylinder head to B18CR or B16B????? any good idea? and the crankshaft 96 to 98 spec???? All i want is to make it perfect to JDM 98-01 spec ITR Engine.

BigBlock22

i thought they used the same crank for all years

speedtec11s

to Change it to 98 spec...you have to get all new main bearings, rod bearings, etc...and to my knowledge they are virtually the same. My suggestions:

instead of getting a ITR or CTR head, spend some $$$ and port the b16a head...it is the same casting as the ITR...ITR/CTR has mildy hand ported head...and diff intake valves and valve springs.

Also, for the money you will spend to buy an ITR crank, new bearings, and new rod bearings, you can just have a skilled machine shop knife edge the crank or lighten it and balance the whole rotating assembly...this would be superior to a oem 98 spec crank.

If I was planning on opening up any Type R motor, this is the route I would go...just my 2 cents.

9tailsfox

Thanks Man. So u mean that ITR 98 spec to 96 spec besides main bearing, rod bearing, even the crankshaft balance weight are difference. I thought only ITR compare to GSR would be difference the block.For me this will make me dizzy since I'm not $$$ rich, But if I do I'll just straight get the last 2001/2000 years ITR DC2 engine. Well I can confirm that my block is not GSR block is ITR 96 Block. I only know that the latest year made from JDM Honda always come a better upgrade or fix. I also heard that ITR 2000/2001 year made use CTR b16b cam for higher lift and duration. I don't know if it true.

Meister vtec

I highly doubt there is any difference internally for the shortblock when your comparing a 96 to a 98 or any jdm itr motor to one another. as far as Iam aware the only differences for the motor are cams,header and tune.

the two itr motors that infact are apart from each other internally are the jdm vs usdm!

speedtec11s

No, its all the same...ITR internally is the same...only diff between us itr block and jdm itr block is the pistons...jdm is slightly higher compression.

The cranks are the same...I was saying that if you changed cranks you gotta change all rod bearings, main bearings and thrust washers.

Like Meister vtec said..the cams are different, header is different, and the tranny on new ITR (jdm) has the 4.7 final drive.

CTR cam only came in CTR....the CTR and JDM ITR intake cam have different part numbers, and the CTR is slightly bigger.

Good luck to ya

Good luck to you.

9tailsfox

hey, thanks i get it. Well since there is nothing that I have to change the block so all I need is get a ITR 98 spec + head or Pnp my b16a head, change throttle body? but more I would like to stick to factory original even I know there the same as they are same Casting from the factory. So Pnp b16a may not my 1st choice. I live in Malaysia, Well If my country have a reliable customize car shop like CHIP FOOSE ( OVER HAULING) I would no doubt that my car is safe being upgrade (because they know what they doing the best for us). I just don't wanna get trouble, Cos it is my daily car and is my only car. Well anyway thanks reading and reply this thread. any further information please post. I'll read it sometimes. thankx

SR20S13

nope hes right the 2000/01 had the CTR cams

speedtec11s

yeah i just re read what I typed lol...pre 00-01 was diff...i was looking at a list of part numbers I had from my old shop...I stand corrected

lek9l

I am lucky enough to compare cranks with spun rods, well basically I observed the 96 ITR crank (35lbs 14.4oz) and it appears to be lighter with an R stamp while the 01 ITR crank (37lb 8oz) has an R stamp with one dot and heavier. The b16a crank is lighter than the CTR crank, CTR crank has S stamp take a look at the pictures.

angryhillbilly

How much lighter are we talking? 96 itr vs 01 itr crank? 5 grams? Who cares that might just be the difference in material loss from wear over time on top of casting weight variation. But 1 lbs or more would be actually somthing of note.

kyliejohn1129

They are the same I have both good cranks on my bench now no dif at all. And if your taking it apart you should just drop in a Ls crank and Ls rods I did a noticed the dif in torque

Aurel

Good informations thanks