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Old 01-27-2004, 09:05 PM   #1
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Default pr3-3 & pr3-2 head stamp. what are the differences? specs?

as the title says? from what i dug up so far pr3-2 is the more recenct version of the b16a?
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Old 01-27-2004, 09:14 PM   #2
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Default Re: pr3-3 & pr3-2 head stamp. what are the differences? specs? (id10t)

My first Gen B16 has a PR3-3 head so most likely the PR3-2 is newer.
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Old 01-27-2004, 09:16 PM   #3
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Default Re: pr3-3 & pr3-2 head stamp. what are the differences? specs? (Mr. S)

so what year is your first gen? also do u have specs?
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Old 01-27-2004, 10:52 PM   #4
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Default Re: pr3-3 & pr3-2 head stamp. what are the differences? specs? (id10t)

Mine is a 1989 5 million series (JDM CRX SiR).
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Old 02-02-2004, 01:48 AM   #5
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Old 02-02-2004, 04:53 AM   #6
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I have found there is no correlation between hte PR3-X, and a year or model. I have a PR3-4 (head cast in 91, but in a 93 EDM VTi), so do some ITR owners I have talked to. My buddy has a 96 ITR with PR3-3 and another has the PR3-3 in a 99 ITR, and some have PR3-2, I have seen 99-00 Si's with PR3-2 also. I am curious myself to find out what the deal is with it.
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Old 02-03-2004, 05:53 AM   #7
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Old 02-03-2004, 01:40 PM   #8
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Default Re: (id10t)

98 ITR, pr3-3 here.

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Old 02-03-2004, 01:59 PM   #9
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Default Re: (92b16vx)

Quote:
Originally Posted by 92b16vx
I have found there is no correlation between hte PR3-X, and a year or model.
I totally agree with this statement. Those numbers are not a reliable way of telling what year the head is or what engine it came from.

the only way to tell what year the head is, is by the circle with emobossed numbers right above the exhaust port on cylinder #4 as seen here:

Click the image to open in full size.

..other than what vehicle model a PR3 head comes from, thats pretty easy to figure out, cuz all JDM 89-01 civics with B16's are mainly either SiR/VTi/Si ; JDM 89-01 integra's XSi/RSi/B17-GSR or Type-R.
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Old 02-03-2004, 05:11 PM   #10
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good shiz katman.
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Old 02-13-2007, 03:10 PM   #11
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Default Re: (id10t)

My kids then says "98" in the first circle.
We bought the car from an auction.
THe valve cover looks like a GSR cos the "H" for honda is not on it.
B16 bottom block.
My question is , is it possible that he has a GSR head on this b16?
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Old 02-13-2007, 04:14 PM   #12
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gsr head will say p72
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Old 12-25-2009, 09:06 AM   #13
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Default Re: pr3-3 & pr3-2 head stamp. what are the differences? specs?

ok i got an engine from a friend in a trade and my head says pr3-4 and the circles say 00...so is this a b16 head made in 2000??? the block is a b18b...which is an ls block if im correct......
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Old 12-26-2009, 03:17 PM   #14
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Default Re: pr3-3 & pr3-2 head stamp. what are the differences? specs?

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ok i got an engine from a friend in a trade and my head says pr3-4 and the circles say 00...so is this a b16 head made in 2000??? the block is a b18b...which is an ls block if im correct......
yep, its a 2000 B16 head. and yep b18b= LS
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Old 12-31-2009, 05:16 PM   #15
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Default Re: pr3-3 & pr3-2 head stamp. what are the differences? specs?

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yep, its a 2000 B16 head. and yep b18b= LS

thanks for the reply...
Click the image to open in full size.

so i also have a b16 block on my stand and was wondering if i could use the ls crank inside the b16?
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Old 07-12-2013, 12:35 AM   #16
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Default Re: pr3-3 & pr3-2 head stamp. what are the differences? specs?

I know this is a old thread but I just bought a head PR3-2. Those dumb *** scuffed off the date on the head...I think it's a b17 head since it came with b17 camshaft (b17 groves)...
shouldn't b16 and b17 have same valve train and same size combustion chamber?

Click the image to open in full size.
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Old 07-12-2013, 06:18 AM   #17
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Default Re: pr3-3 & pr3-2 head stamp. what are the differences? specs?

b16 and b17 heads are the same. I can't think of any reason why someone would shave that part off other than it being stolen.
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Old 07-12-2013, 11:27 AM   #18
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Default Re: pr3-3 & pr3-2 head stamp. what are the differences? specs?

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b16 and b17 heads are the same. I can't think of any reason why someone would shave that part off other than it being stolen.
i at least hope it's not stolen. now i cant tell if it's a b17 head. or b16 obd1 or 2.
maybe if i plug in a dizzy from either 1, i might? dude said it was a 2000 SI. Came with b16 OBD1 manifold and has b17 camshaft...so i'm lost here
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Old 07-12-2013, 11:36 AM   #19
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Default Re: pr3-3 & pr3-2 head stamp. what are the differences? specs?

it honestly really doesn't matter. it's all the same. the mounting holes for obd1 and obd2 distributors are the same. the only difference is in cams between the b17 and b16. even going by a head stamp doesn't guarantee people didn't swap out anything removable in the head.
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Old 01-02-2014, 09:38 AM   #20
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Default Re: pr3-3 & pr3-2 head stamp. what are the differences? specs?

ok, what about a pr3-1 cylinder head? i had a choice between a pr3-3 and pr3-1. after reading all this, i feel like an idiot for getting the pr3-1
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