Took my P72 head to be p&p'd, specifically to seat the ITR valves I just bought, and asked for a mild port and polish, was told between 3-400 .. ended up the guy asked for 225, and did nearly nothing! Problem is they are good guys, I think maybe he misunderstood me, or was in a rush (left for vacation today) .. opinions on my options here. Pics: (before/afters)

Before:

After:


Before:

After:


Before:

After:


So, as you can see the ports are untouched, not happy! I was willing to pay more to have it done correctly, but being that he is away I'm pretty sure he rushed to get it done. Opinions?

 

My setup (basic):
B18a block
0.25mm ITR pistons/rings
LS rods, arp bolts
P72 head
ITR valves/springs/retainers
Portflow inners
Colt cams (CTR-based)
Hondata S300

 

You got mild porting of the bowls, what do you expect for $225.00 I hope you plan on getting a valve job, your seats look awfully pitted.

 

As I said, I expected to pay more (we had discussed price and work I wanted done before hand) .. I put the before/after pics up so you can see what still needs to be done here.

 

that is about the same amount of porting you get with a oem ITR head. And all you probably need for your setup IMHO

 

That's what I figured, and both shops have said now too .. it's down getting the seats done as we speak. Thanks for the info guys .

 

Seats done, and exhaust ports polished:

 

u needa make the center divider thing *dont know what its called* sharper! u wanna be able to cut your finger on it hehe

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by kidkombo &raquo;</TD></TR><TR><TD CLASS="quote">u needa make the center divider thing *dont know what its called* sharper! u wanna be able to cut your finger on it hehe</TD></TR></TABLE>

With heavy porting... that could work... but this is a mild job.

Minimal porting was done to the intake, but the guy did thin out the splitters and he cleaned up the casting imperfections. It appears he did most of the work on the bowl area (area right before the valve seat) which is very important to the performance of the head.

I can't tell that there was any work done to the exhaust port itself, but the bowl also appears to be polished....along with a valve job, you should be fine with that. If it makes you feel better....$225 for that work is nothing to bitch about.

 

i hear ya man.

 

considering they didn't touch the guide bosses or the short turns when they did the exh port you where better off w/the 225 job and a valve job,and not paying for more porting work.jmo though.

 

This is a head we did in house (this is NOT an advertisement!) This is what a head should look like with some WICKED port work!

Shot from the chambers


Down the runners. Shrouds properly cut.


I did this a couple weeks ago for my H assembly. Doing an all motor build. This head was optimized for a set of Crower Stage III bumpsticks and new springs/retainers. Power band/VTEC engagement is recommended @ 6k rpms and above. This head will flow over 330CFM.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by BaseModelEvo &raquo;</TD></TR><TR><TD CLASS="quote"> This head will flow over 330CFM. </TD></TR></TABLE>

i hope a ported h series head will.......

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by kidkombo &raquo;</TD></TR><TR><TD CLASS="quote">u needa make the center divider thing *dont know what its called* sharper! u wanna be able to cut your finger on it hehe</TD></TR></TABLE>


so what makes you say he needs to make it sharper?

 

I paid a total $300 ($CAD so say $250 USD) for the short side/bowl work and valve job, given my setup it's good enough, we'll see what kind of numbers I make at the dyno, then I can decide whether to go all out on the portwork. As far as the exhaust ports, I did that myself, nothing crazy .. just removed imperfections and polished it as fine as I could, and I'm staying away from the intake ports as I am too much of a porting n00b .

 

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

i hope a ported h series head will.......</TD></TR></TABLE>


you have any links online of any that have

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by pr0honda &raquo;</TD></TR><TR><TD CLASS="quote">


so what makes you say he needs to make it sharper?

</TD></TR></TABLE>

yes sir so the air is cut thus making air go in faster u can say? increase the velocity of the air coming in because its less restricted.....i guess lol

 

are you possitive that you will benefit from this...? i think i disagree.. have you spent time on a flow bench? for his setup he will never max out the flow on his head...

and as you can see the porting that is being advertised by the other guy above.. that person who ported that head seems to know a little.. the divider is not sharp like a blade.. its this and still rounded..

i have a basic 500 dollar port on my itr head and i reached a point where the head would not flow anymore.. we topped out at 278hp.. i would need more porting to make anymore power..


shawn

 

spent time on the flow bench?

 

i was asking him if he has spent time on a flow bench since he is tellin someone how to port their head...

shawn

 

A valve job, Type"R" port job, clean and surface is a bargan at $225.00.

 

I think so too Don, I just wish he'd done more as I was willing to pay more! hehe. Ah well, seems as though the work done is all I need anyway. Is there anything basic DIY I can do from here to the ports that I haven't done? Or leave well enough be.

 

Just leave it alone. Ya the deal you got was very fair.

 

looks like its need to be redone , but maybe the guy wasn't thinking on extacly what you wanted. 225 $$ looks like the work he did sound about right.

 

bowl work is where you will notice some decent power since the head is already large enough for an all motor set up, yes minor improvements will make a bit more power but for 225 you can complain, the bowl area and short radius turns look okay

i would be happy for 225