fly_high_gsr

What's the difference between pr3-2 and pr3-3 itr heads? I have 99 jdm itr motor just courious...if the cams are different then 96-98. Any inputs would be appreciated.

fly_high_gsr

Bumpppp

racebum

zero, early 96 heads had no port work, hand finished ran for something like a year and 98+ were all cnc'd. the casting itself is the same all years

CRX_RR

there has to be a difference. bump

racebum

oh really, please inform us

fly_high_gsr

wow no one knows on itr forms??? someone got the answer i'm sure.

fly_high_gsr

ok jdm block all stamps b18c with no numbers like usdm, how do know i know if i have pre-99 itr long block or spec R... i did search and says i should see a green paint by dizzy which i do see it but still any other way to tell i got real spec R 99?

Targa250R

1. Why does it really matter? Both the '96-Spec and the '98-Spec B18C make 197hp. The '98-Spec has a slightly different torque curve.

2. What is the date stamp on the head casting? What header did you receive with the engine? What ECM did you receive with the engine? Those items will identify the revision.

fly_high_gsr

Head stamped pr3-3 also 99
4-1 header
also i got obd2 p73 itr ecu.

only reason i was curious when i took out the header shield all bolts were lose and it seems they switch the header or something i'm not sure... where i bought the swap he said its 99 spec itr block. Could it be pre-99 itr long block with itr head and different header not spec R.

Targa250R

If the date stamp on the head is 9|9, then it's a MY99 or MY00 head.

37820-P73-what? What is the complete part number? The ECM also usually has a production date stamped in ink on the case.

Did you receive a transmission with the engine?

It doesn't matter. The bottom ends are the same, provided that it's definitely a Spec-R and not a standard B18C short block obviously.

fly_high_gsr

Thanks for your time... i'll get the exact number for ecu when i go back to my shop tomorrow. No i just bought 99 itr long block with everything minus transmission, it has itr head i can see green paint by dizzy, i was just curoius what's the difference between pre-99 and spec r 99 engine. Its not gs-r block either cuz i see where manifold bolts up i seen silver think bracket which is aluminum, also pr3-3 is itr head not gs-r. If i had standard block wouldn't it come with gs-r head not itr head i believe.

fly_high_gsr

bump anymore ideas???

racebum

you know why this thread probably got moved?

the level of retardedness

there is no fking difference between the heads

date castings were used and are just that. also can signify batch

i mean, you're arguing with guys who have seen the heads, worked on the engines and for some insane refuse to believe they are the same.

the only difference between the engines as a whole is the header and ecu

fly_high_gsr

So I check my ecu p73 003 it's 96 spec r and it's not going to plug in my harness, how can I make this work? I really wanted it to use jdm ecu. Any one can help me figure this out or Should I just use usdm p72 ecu.

Targa250R

A P72 is going to throw codes and generally not run properly unless you have it chipped with P73 maps.

You can use the JDM P73 with your existing engine harness by buying an ECM jumper harness from Rywire.

Little_Nolan

iTrader: (3)

I have never hear of a '96 model year ITR or any ITR motor not coming with P&P work, interesting..

With that being said, there is no difference between the head stampings, I have seen PR3-2, PR3-3 and PR3-4's all oem ITR equipped. All short blocks are the same in each market every year.

fly_high_gsr

My car is 00 and I do have jumper harness and p72 is od1. I have is ob2b to obd1, which jumper harness do I need for my 00 si for p73 ecu.

slomofo

iTrader: (1)

Year is stamped on the head and year is stamped on the block, why don't you just look at your setup to see what you've got?

The little number below the engine code is the stamp on the block that'll specify year. The first digit of that serial number is the year. Kinda hard to explain, but....

B18C1 GSRs came out in 1994. The first serial number digit on all 94 GSR blocks is going to be a 1. 95 blocks will have a 2, 96s will have a 3, 97s have a 4, etc. etc. etc. .

The first B18A1 is the US came out in 1990, therefore the serial number below the engine code on a 90 B18A1 will start with a 1, 91s will have a 2, 92s will have a 3, etc. .

B16A2s came into the US in 1999, so the first digit in the 1999 B16A2 serial number is a 1, 2000s have a 2.

Here's a JDM example:


B16A was first released in 1988. The engine above has a 5 as the first digit of block serial number. That engine came out of a 1992.

Do you see the pattern here?

Targa250R

First year for the B16A2 in the US was 1996 in the del Sol VTEC ('94-95 was stamped B16A3). My 2000 Civic Si with a production month of 9/99 and a 9|9 head stamp had a 5-million series block serial number.

slomofo

iTrader: (1)

Okay then.... note taken.

em1_niokka

iTrader: (2)

do these numbers work for the jdm b18c too?