Is there a diff between a p72 head and p73 head

[hkwe36]

Besides one being jdm and the other usdm. Any other changes. If so which is better and why. Thanks.

[Catnip]

Besides one being jdm and the other usdm. Any other changes. If so which is better and why. Thanks.

http://www.honda-tech.com/showthread.php?t=217469

PR3 = B16/ITR head, P72 = GSR head.

PR3 (ITR/B16) left, GSR (P72) right.
http://img24.imageshack.us/img24/5211/p72vspr3combustionchamb.jpg

PR3 is supposed to flow better... but if you're getting port work done anyways...

[hkwe36]

if i have a full jdm gsr motor. should the head say P73 or P72. thanks.

[RBS]

72 is gsr, 73 is ITR.

no b16 is stamped 73, only pr3




and the head of ANY gsr would be stamped p72

[Barefoot]

72 is gsr, 73 is ITR.

no b16 is stamped 73, only pr3




and the head of ANY gsr would be stamped p72

dat right

[Catnip]

I guess my post was confusing.

[JGilbert312]

Here is a thread to help a little.

http://www.honda-tech.com/showthread.php?t=611018

[Catnip]

I feel like I'm invisible.

[hkwe36]

Thansk to all that replied.