I got this head for a stupidly cheap deal (400) from a guy who got out of the car thing so he pretty much gave it to me. The thing is I dont have a goddamn clue which b-series head it is It does say pr3-3 on the front

here are some pics







Modified by electric-boost at 8:29 PM 6/30/2005


Modified by electric-boost at 1:00 PM 7/1/2005

 

its most likely a B16 head.

 

my buddies b16 head and all his b16 **** are PR3...

 

whats the date stamp on it? could be a ITR head

 

take a pic of the stamping along with date.

 

I will take more pics tom. and post them

 

PR3-3 is a first gen B16 head I believe, mines a first gen and it say the same.

 

Pr3-X is a b16 or ITR head. The last number is of no interest in the identification of the head. Just do a search, this subject has been covered like a million times before.

 

ok so here are the vec solenoid plug and oil pressure sensor plug from the unkown head. Now im not sure if they are the same regarless of what obd they are but I unplugged those wires and plugs from the unkown head and plugged the vtec oil pressure sensor plug and the vtec solenoid plug into my obd2 d16y8 head and they fit perfectly. But the thing is I dont know if ech gen has a different style of plug or there all the same (im betting they are the same) but I took a couple more pics of the head to help identify it but im not sure what to think of it.

 

thats is most def a b16 head... good deal but i got 2 head (b16) for 100 bucks.... but still you got a good find...

 

It's a B16 head casting for sure... but being that it's a 2001 head... it might even be a ITR head. But don't get your hopes up, it's probably a b16. Check the valvesprings, if the top of the springs have blue AND yellow paint (for intake and exhaust respectively) then you might have yourself a ITR head.

but with cam gears too... it's a damn good deal. I would bring it to a machine shop, just to be safe (to get it checked out)

 

how did u tell it was a 2001 head? if thats the case doesnt it have to be a itr head, since the last year for the b16 (usdm at least) is 00?

 

check to see if there is dual valvesprings on the exhaust side.

 

well that 00 on the head means 2000

that and the vtec plug is not a pre-obd plug, the style of fuel rails ect ect.

 

Modified by maxrpm at 5:40 PM 6/21/2005

 

look in the intake ports. any sign of porting?
any color mark on the top dizzy bolt hole?
dual springs on both sides?
are the valves necked?

if no to the above, its probly a b16 head. if yes to all, its probly itr

 

If you want to know if its an ITR head, look down into one of the intake ports..Look down by the head of the valve, does it look like its was machined at all? Smoother then the rest of the port itself.. When they do the mild port job on the head its ony the area just around the opening of the valve, so if it looks nive and smooth like a cut finish by a cutting tool/grinder then its an itr.. My Itr head is a 0/0 just like yours in the pic..

either way the head is junk and no use to you.. I'll give you 200 for it..

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by maxrpm &raquo;</TD></TR><TR><TD CLASS="quote">A pr3 is b16 head. the 3 means its a sir III.
I had a b16 engine and the head was stamped with pr3-2, which is from a jdm 92 b16 sir II. </TD></TR></TABLE>

you sir, are wrong. My ITR head is also a PR3-3 head. As said before the last digit is irrelevant to identifying the head, it's more like a casting #. But the ITR should have dual exhaust springs, glob of green paint in the area behind the distributor mount, and also some porting in the bowl area.Also the date stamps will help you by telling when it was cast. But all this info is available right here in the Honda-Tech archives if any of you lazy *** guys would have bothered to do a SEARCH!!!

 

well the intake ports are nice a smooth, unlike the exhaust which are very bumpy. I cant get enough light into the head to see from the top if it has dual eaxhuat springs

 

and as I felt the valves I did notice they were really smooth untill the bottom part of the shaft where it gets flat then it gets somewhat rough again

 

My ITR head is stamped PR3-3, my B17 head is stamped PR3-3, so to whoever stated that it's an SIR-III motor,; YOU sir, are an idiot!

To electric-boost - Why don't you take off all the 12mm bolts on top of the head, remove the cam caps/oil squirters, then check the rings on the cams to identify which cams they are, then while the cams are out, check to see if the exhaust valve springs have little tiny springs inside of them.

 

PR3 = B16 head

And according to the stamp, it was the 9th head made on 9-20-00. This means it came off of a 2001 Civic Si most likely!

ITR heads should be stamped P73.

 

no such thing as a p73 head. itrs also had pr3 heads

 

PR3 = B16 head
And according to the stamp, it was the 9th head made on 9-20-00. This means it came off of a 2001 Civic Si most likely!

ITR heads should be stamped P73.


Too funny

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by hybrid_vtec &raquo;</TD></TR><TR><TD CLASS="quote">PR3 = B16 head

And according to the stamp, it was the 9th head made on 9-20-00. This means it came off of a 2001 Civic Si most likely!

ITR heads should be stamped P73.</TD></TR></TABLE>

first there were no 01 civic si. the last b16 in america was in 00. and 9 of 2000 would make it an 01 head and the only pr3 head sold in america in 2001 was an itr one. this kid might have lucked out.

it only says p73 on the timing covers and ecu......not on the head.