This is my possible setup, I got quoted from a respectable machine shop that a pnp would be $800 and a 3angle valve job another $300, I would do the valve job no matter what but I just dont see the port n polish being worth $800 since I have a type r head. Heres my possible setup:

Head:
JDM Type R Head (Already have)
Skunk2 Pro1 Cams(Already have)
Skunk2 Pro Camgears(Already have)
Skunk2 pro series valvetrain(Already have)
Supertech Valves(Already have)
Victor X IM
Either Hytech or RMF header(undecided thus far)
And either 3" AEM Cai or maybe ball out and get a mugen intake
68mm Skunk2 TB (Already have)
Golden Eagle Pro Series Fuel Rail
RC 440 injectors
AEM FPR
Walbro 255 Fuel Pump


Block (local selling this block, never used, done right)
b20b
ARP Headstuds
acl race bearings
cp 11.5:1 84mm pistons with rings
eagle rods
polished and balanced crank
typer oil pump
all honda oem seals
z10 vtec gurdle done at machine shop
golden eagle lsv kit
oem 84mm head gasket

Tranny (Already have)

Stock JDM GSR with OEM optional LSD

Also will got to a 2.5" testpipe to 2.5" apexi n1 exhaust (Already have)

Tuned on s300 (Already have)

I know people will ask what are your goals and budget etc. Basically I want to do it right the first time type of deal. If I see it as worth it, ill just save more since i work full time, but if im going to gain almost nothing for a $800 pnp too me that is not worth it cause then i can use that money and get a good header. This is basically a spring project that im going to do once school is over and i have more time to work on it, just collecting parts now and finding good deals.

 

Whether its worth it is subjective and depends on your budget limits and how important a few extra hp are to you.

I can, however, give you some things to consider. The first is that big cams benefit a lot more from a good port job than smaller cams do. Second, your type R head is not ported. All they did was clean up the seats and touch the bowls a bit. Calling them 'ported' is marketing hype. A stock b16 head with a just really good valve job will out-flow a stock 'factory ported' ITR head.

Hope this helps.

 

that is a big price tag for a pnp, would be worth it to get a few extra ponies to do a port n polish though if you could find someone cheaper

 

Big price tag??? so my $1300 CNC was a rip-off??

 

Pro 1s aren't that big of a cam. Take a look at VtecKidd's build. He used them on an ITR motor and they did just fine
CNC>hand porting, but look at what the guy said. 800 for just the port than another 300 for a VJ. Im 99% sure your CNC head included the VJ didn't it? So that $1300 head is now compared to an $1100 head. Makes sense to me



Honestly sell that "JDM" head to some fanboy who thinks its the best ever and buy a regular b16 head and use the extra money towards the port. Having a type-r head ported defeats the purpose of having a type-r head

 

what he said lol

 

i was saying that for his build which isn't to crazy would be throwing a lot of money away for something that would be more than overkill for his setup. could get some nice intake/exhaust ports reworked with some decent bowl work and a decent valve job for probably almost half from other companies. if he wants to spring for that much on the work then its up to him, he wanted opinion so i gave mine

 

I,m sorry I can't quote exactly where I have read this, but. I have read in a few magazines that Honda Heads flow very well stock and a 3 angle valve job increases flow 20-30 percent. I think I read it on the endyne website.http://theoldone.com/

But I also read it somewhere else too. It seems like pnp is only needed if your building a 10k reving drag racing monster.

 

Thanks for the input, I am starting to realize that I would be fine with just a valve job, the reason a pnp is being considered is b/c im doing all this other work should i just go all out. Its just hard spending $800 on pnp when that money can go to a better header or else where in the motor.

Ive actually been trying to sell the head, but im just not going out of my way to sell it atm just pm ppl looking for a head. The reason the head is being used in this build is b/c i got it for practically nothing.

Yea thats what I'm starting to realize also, just do a 3 angle valve job and I'll be fine

 

itr heads are a good starting point cause honda chooses the best castings to bowl blend...and according to some people the later year b16 head castings suck...i also have an itr head im getting ported for that reason...

 

if its getting ported it doesn't matter if it sucks or not. Its getting ported. I have yet to hear anything about newer castings being shitty. When you port an ITR head it becomes a b16 plain and simple. Its a waste of what the ITR head is meant for

 

contact b20vtech on here, he does good head work, his prices are probally the cheapest u can find for decent head work, but he's in Cali though!

 

Now, you are making a lot of sense. Spend money on a good header.

 

A good valve job will give you 30-50% of the increase you would see with a full port job.

 

thats a race VJ. If he plans on driving this on the street at all he will not see those kinds of gains with the VJ he needs

 

Can't go wrong with a good pnp....There's always room for improvements. Also throw a valve job on top of that........I say do it. But it's all up on your budget or what kind of HP goals your look'n to get.

This is like the which head is better gsr or b16 questions:
1. B16 head flows better than gsr
2. Gsr head makes more compression/ less likely to detonate cuz of camber design

BUT......All this can change....The gsr head can be pnp to flow better....The B16 can add pistons to gain compression and vise versa.....There's always room for improvments..

 

Maybe on the exhaust side, but definitely not on the intake.

 

How does doing a pnp make a itr head into a b16 head and a waste of a itr head?

I'm starting to lean towards just getting a 3angle valve job and put that $800 towards a rmf header and mugen intake. The extra money towards the mugen intake will prob net me the same gain if not more and look pretty sweet in my engine bay

Boosting the jdm gsr i currently have in my car is still an option too lol

 

the whole thing of an ITR head is the blended bowls and valve train. You have to upgrade with those cams and porting it leaves you with a ported PR-3 casting. An ITR head is for someone who doesn't want to do a lot of engine work, just bolt on and go. Its the best factory head yes, but thats where it stops. And if your considering a Mugen Intake over an ITR 3in cold air than you really need to reconsider a lot of things with your build.

 

Might want to tell all the ITR owners that build their heads that.

And why would I need to reconsider things with my build if i used a mugen intake. I was under the impression that it made the most power midrange and peak.

 

Lol, when was the last time you saw a ITR making 200+ whp.

Your impresssion is wrong. A 3 intake tuned on the dyno will outperform a Mugen intake. That thing is mostly JDM fanboi bling.

 

So what's the flow rate difference between a 3 angle, p&p, and Valve job? I'm looking at getting my head done too and I want to know what the best bang for the buck is for a streetable car...

 

You should talk to someone like Combustion Contraption and see if they can give you flow numbers for just a valve job and then for a full PnP.

 

I got 3 guys that live by me with Type R's that made 200+whp and they all built their head.

But the mugen intake baffles me cause i always read through the type r forums the track guys use that b/c it made the most power mid range and peak.

 

I think a few things should be clarified here. A type R head tends to cost more because they are more rare than the standard PR-3 casting, they have blended bowls and a special 3 angle valve job which is different than a standard 3 angle valve job and flows much better. They are a great performance bolt on over a stock head and will make more power. If you're going to have a head ported, unless you already have a type R head, it's always more cost effective to start off with a cheaper stock casting since you'll be altering most everything that makes a type R head, a type R head. The later production years of the PR-3 heads tended to have more isses with "core shift" which hurt flow through the bowl areas. The type R heads started off with hand selected PR-3 castings that had little or no core shift to begin with.

Honda heads do flow very well on their own, just ask mar778c as he's making over 220 whp on a 1.8L with a stock head. His secret is a very unique custom header and parts that compliment each other.

I would check with a company like Headgamez which is near your area geographically or CCCylinderheads in California if you want more accurate pricing and information on porting and valve jobs if that's a route you want to check into further.

The main thing to remember is that not all 3 angle valve jobs are created equal. Using different angle cuts can make a noticable difference in flow/power over standard 3 angle cuts. A type R bowl blend and valve job is probably the best bang for the buck head work on most mild builds on the street which is why people always look for type R heads. The problem is that most of those heads are at least 10 years old and in need of new valve jobs which if done incorrectly, can nullify the performance advantage of the original valve job.