Okay, so while I daily drive my integra (which I don't even own yet ) I plan on slowly building a motor on the side. Starting with the head.

LS heads seem to be pretty cheap so I plan on buying one ASAP.


Once that is out of the way, what would you guys recomend? I will be doing port/polish on the intake manifold and on the head itself, all at school so that won't be even able to start until august.

What camshafts do you guys recomend? Valves/springs ect..

My goal on the motor is 250-300hp.
After I build the head (probaly be done by thanksgiving ).
I am going to buy an ls block and work on that while the head sits.

 

I have over 900 bux in just my LS head after springs, valves and cams etc...

For an all motor build LS VTEC is the only way to go. It would actually be cheaper than building the LS head to make similar power.

 

for 250-300 whp goal you don't need to touch the head at all. People even make 400whp fairly easily on a stock LS head.

I do have 2 for sale though if you're interested

 

the Key to LS heads is proper porting... with good porting it will make a hugh diff.. then put "Vtec" sized intake valves and your set.... a LS head that flows as good as a Vtec one is the ****...

 

Buy a vtec head and it will flow as good or better than a fully worked ls head for half the price.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Launchpad &raquo;</TD></TR><TR><TD CLASS="quote">Buy a vtec head and it will flow as good or better than a fully worked ls head for half the price.</TD></TR></TABLE>

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Launchpad &raquo;</TD></TR><TR><TD CLASS="quote">Buy a vtec head and it will flow as good or better than a fully worked ls head for half the price.</TD></TR></TABLE>

but u will lose torque.... i guess im a torque *****!....
250whp 225ft lbs on a bone stock LS on 9.5psi....
2.0L block 9:1 comp...282whp 226ft lbs STOCK LS head with 4 bent valves
9.5psi....

 

This is a list of all the parts I have for my LS head, going to the shop this month.

All new seals/gaskets from honda
Hondata IM gasket
Getting hot-tanked and cleaned up real nice
Crower SS valves
Crower Dual Valve springs
Crower TI retainers
Crower 402-T cams
Full-Race cam gears
Ferrea Bronze Turbo valve guides
Ferrea Valve seals
ARP head studs
Plan for a PNP and 5-angle valve job later on.

Bought the head for 60 bucks shipped, 98+

 

go with the 404's..... didnt get a chance to but i KNOW it will yield nice power!!

 

Just put springs and retainors in and get a set of 402t cams w/ a STR or Edlebrock intake manifold


if its a p75 head I always say just get springs/retainors and have fun

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by JDMs1eeper &raquo;</TD></TR><TR><TD CLASS="quote">Just put springs and retainors in and get a set of 402t cams w/ a STR or Edlebrock intake manifold


if its a p75 head I always say just get springs/retainors and have fun </TD></TR></TABLE>

yup the P75 is the way to go if u can get one....

 

which is the p75?

The heads I was looking at say b18/20.

I will be doing a full port and polish as mentioned, on the stock intake manifold also. So that should clear up the flow issues, and that will be 100% free.

And I should just get new springs/retainers and 404 cams and call it a day since my goal is only 300 hp max.


And I am not a fan of the ls/vtec builds, don't see quite as reliable.

 

also, I had a question about where to buy the enlarged gaskests for the port and polish, anyone want to lead me somewhere?

And whats a good price for just an LS head (no dizzy)? I see it ranging from $40-$300 sometimes.

And is there a difference between b18a/b heads? I thought there wasn't but I think I may be wrong. Sorry for all the questions. Lol, one LAST question. Whats the part number (from honda) on the "Vtec valves" as you called them.


Modified by Nors at 10:03 AM 6/4/2006


Modified by Nors at 11:52 AM 6/5/2006

 

th eP75 head has vtec sized valves already in it. the standard LS heads dont. the P75 head is off of certain B20's.

the valves just order them from a 95 Del Sol Vtec or 99-00 Civic Si or any or the vtec models from acura.

 

So I could order GSR valves yeah?

 

well if u are going to spend the $ to get them get ITR valves which are lighter, but remember the head has to be redone for the enlarged intake valves.....

 

I don't know if I want to spend the time doing that, I will most likely have other projects going on. So if I get the Si valves I don't have to worry about machining the head?

 

with vtec valves u have to machine the head to fit the larger valves.
the LS heads have smaller intake valves. the P75 non vtec head has Vtec sized valves...

but if your goal is only 250-300 dont bother just throw a stock LS head on there and tune it to 10-15psi and you will be happy.. i was with mine

 

p75 head come from 96+ ls and B20's

The differnce is lower miles, Huge Intake ports, better intake mani, better throttlebody, better cams.

Pr4 came on 94-95 b18b's and 90-93 b18a's.

The P8R head came on a 98' b20 and is like a p75 head but also has vtec sized valves. The head also flows "almost" as well as a b16 head.


Personly on a 300hp goal you "ONLY" need springs and retainors. Thats because w/ boost your gonna experience valve float easy in high rpms on your intake side. I've personaly use a completely stock B18A w/ just springs/retainors. Even used the B18a mani and 58mm TB and have ran nice numbers w/ that. On 10psi I ran 11.9@114 and was around 278whp. ANd on 20psi i ran 11.3 @ 124 w/ no 4th gear. (130 traps were on a clean pass w/ boost on 20psi) and that was w/ 410whp.

no need for any jazz or bling when it comes to tryint to make 300hp... use just a larger AR turbine in the range of .63 to .84 and it'll be an easy goal to reach.

 

The p75 head really isnt that much better than a pr4. The only real advantages come in the IM and cams. The ports themselves are barely larger and dont really add much flow(pr4=196cfm, p75=198-200cfm). I ALWAYS go with a pr4 when porting. It allows more room to do what you wanna do to it because of the slightly smaller ports.

As for valves...DONT get vtec valves. The stems on the vtec valves are longer than the non vtec. You can order oversized ones from supertech and onther companies...but for what you wanna do it wont be worth it. I suggest a mild port job, springs and retainers of your choice, 403's or 404's, and a S2 IM. That will really liven up the head and add a good amount of flow. If you must get new valves id get stock sized ferrea or supertech. They will add a small amount of flow and are usually coated

 

their is a huge differnce in "size" of the intake ports between pr4 and p75. When i compaired the P75 intake ports they were VERY simlar in size w/ my B16 head. And w/ boost the performance of the P75 over the P4r are deffinaly a nice kick in the pants.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by sCeRaXn &raquo;</TD></TR><TR><TD CLASS="quote">The p75 head really isnt that much better than a pr4. The only real advantages come in the IM and cams. The ports themselves are barely larger and dont really add much flow(pr4=196cfm, p75=198-200cfm). I ALWAYS go with a pr4 when porting. It allows more room to do what you wanna do to it because of the slightly smaller ports.

As for valves...DONT get vtec valves. The stems on the vtec valves are longer than the non vtec. You can order oversized ones from supertech and onther companies...but for what you wanna do it wont be worth it. I suggest a mild port job, springs and retainers of your choice, 403's or 404's, and a S2 IM. That will really liven up the head and add a good amount of flow. If you must get new valves id get stock sized ferrea or supertech. They will add a small amount of flow and are usually coated </TD></TR></TABLE>

true abotu the valves but thats y u get them cut.......

 

Ok, so I think I got the set up figured out.


B18a/b head - I don't care if its P75 or pr4

I will do a port and polish on it, and the intake manifold (stock).

404 cams

Supertech valves
Crower springs and retainers

Stock everything else?


Hows that sound?

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Nors &raquo;</TD></TR><TR><TD CLASS="quote">Ok, so I think I got the set up figured out.


B18a/b head - I don't care if its P75 or pr4

I will do a port and polish on it, and the intake manifold (stock).

404 cams

Supertech valves
Crower springs and retainers

Stock everything else?


Hows that sound?</TD></TR></TABLE>

dumb the stock IM.... get a Blox they are cheap i got mine new for $150 shipped.....
the stock manifold will make the power drop off early

 

even after a port and polish (which is my free labor BTW)?