hung_kuen

My vtec dohc head has p7s-2 stamped on the side does anyone know what it is from??

Luserkid

P72 = GSR.

Us vs. Them

yeah ur right. p72 gsr. redline @ 8

hung_kuen

What year is the gsr head? Do you guys know?

zexxbo

2007

95ProjectEJ1

iTrader: (5)

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by hung_kuen &raquo;</TD></TR><TR><TD CLASS="quote">What year is the gsr head? Do you guys know?</TD></TR></TABLE>

Pop your hood and look just above the exhaust ports on the left hand side. There should be a series of circles with numbers inside them ie. (9/5).

What numbers do you see?

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by zeimbo &raquo;</TD></TR><TR><TD CLASS="quote">2007</TD></TR></TABLE>

stop ******' with the kid

hung_kuen

(9/6) (5) (3/1) (9/0)

USDMCIVICHATCH

so it's from a 96 gs-r

denraweb

No it's a '90 GSR...(LOL)

Yea he's right though, it's a '96 GSR. Isn't P72-2 obd2a(96+)? And P72 is obd1 (94-95)

turbohatch96y7

iTrader: (15)

Whats the diff between a p72-1 and p72-2 cause i seen a head stamped p72-1 and its from a 98 or at least the markings say that by the exhaust port

Deetz

From what i know of P72 GSR heads, they are all the same.

As for the different stamping, i think P72-1 was 94-97 and P72-2 was 98+

93egSLEEPER

A GSR head is a GSR head either way. Now if we were taling PR3 then we get into some grey areas. The ITR heads were stamped PR3 as well, but they had a green stripe on them (i believe). Last i checked the GSR head whether it be OBD1 or OBD2 has the same plugs, the IM plugs are different though.

turbohatch96y7

iTrader: (15)

Okay i figured it out p72-1 is jdm and -2 is usdm

Deetz

no you didn't.......

I just bought a complete 1997 usdm B18C1 GSR yesterday, it is a P72-1

Like i said in an earlier post, earlier model GSR's had that stamping, later models were stamped P72-2

93egSLEEPER

also i dont think there was a JDM motor that uses the p72 casting, they all used PR3 didnt they? None of the JDM motors use the square combustion chambered heads from what i have read. Could be wrong and im up to find out for sure.

Deetz

The JDM B18C did in fact come in a gsr version (called something like sir-g). It has slightly higher compression pistons making 178hp. I had one last year.

Most people know of the B18C type R, that's the one that came with the pr-3 head. Actually to add to this thread, the PR3 also came with different stampings such as pr3-2, pr3-4 and such

93egSLEEPER

yea i knew the PR3 cast came with i think three different cast numbers (2,3,4), i was just unsure as to all the JDM GSR specs and what heads they came with. It seems to me as if a P72 GSR head in japan is like a type r head here, on the rarer side.

Like i said i wanted to know, and learning is why i get on this site everyday. glad i have this info in the back of my head now

xero_xero

Head Identification Post with PICS!!!

Here is a post that helps discuss all of this

PR3-X and P72-x where X is a check digit from honda. its random as it refers to the serial numbers in the third and fourth in the dates for when the block was produced.

xero_xero

GOD CLEAN pics are always key. just to give an example, there is an 86 and a 98 stamped pr3-x head which can easily be confused....

Deetz

no confusion, there was no such thing as a pr3 in 1986, it wasn't even invented yet

the pr3 came out in 1989 as a 1990 model for civic and crx and integra's

turbohatch96y7

iTrader: (15)

Okay cause i was gonna say my 96 head says p72-2 but its all clear now

xero_xero

bump, just checked, sorry for the confusion on my part. just double check, there were casting numbers for 87 on the 1988-1991 JDM Honda Integra RSi/XSi (DA6/DA8). there were development b16 in 85 with the pr3, casting started in 86 in japan and were a limited production...

turbohatch96y7

iTrader: (15)

Good info!!

Deetz

I have never seen any proof of this......

- i have been importing for 15 years now, thousands of engines, never seen one earlier than 1989, not ever!

- i have most Honda brochures from around the world, that gen Integra came out in 1989, not before!

- 1st gen teg's had d series in them

xero_xero

Not going to feed the forum monkeys.

hope all info was helpful..