hey guys need quick help on building my Ls vtec,

this is what ima be running
Block:
B18a1
shoppeen rods arp rod bolts
ITR jdm 81.25mm pistons
ACL bearings Rod Bearings
ITR Oil Pump
ITR water pump

Head:
Gsr Head
Blox Hsl Cams
Blox Dual Valve Springs
Supertech flat Valves or Blox Flat Valves
Blox Manifold
Blox 68mm TB


My question is.. would you recomend to Port and polish the head or i wont need to since im not going all out.. any suggestion will help alot
thanks

 

Why not? lol

If you have the money...do it!

 

your going to need injectors/pump,Good header and a tune after that.
some 390cc or 440cc

even if you werent going to p&p you should see over 200+hp with just prelude 310cc and pump.(since your not going all out)

 

a good valve job from a reputable porter is all you need

 

A good valve job can produce some CFM, but that doesn't address the simple casting imperfections in the port. There is certainly power to be had with a good cylinder head. We usually see 20whp on pretty mild motors with a good head, double that on big high compression motors, and massive power on big turbo cars.

CFM gained does not all produce equal horsepower. We have found that CFM picked up at the valve and close to the valve produces more than that picked up further away. Remember that Honda designed that port for a 170hp 1.8 L engine. Now you are trying to make quite a bit more power and the fuel associated with that power and shove it down the same port. Just like all the other things you do to improve your engines ability to make power, intake, manifold, cams, etc....this is no different. There are a few crap heads on the market and a lot of "ok" ones. FWIW, I'll have my CNC B-Series completed in about 2 months, and I can turn them around in a couple days. Not trying to make a deliberate sales pitch, but I know some guys are having problems with getting their stuff back in a month, 2 months, 12+ months.

 

if you have the cash than yea. if not, then dont worry bout it.

 

thanks guys well yes im planning to get the 255lph fuel pump and some injectors and of course tunning my goal is to be over the 200hp mark

 

Put it on a dynapack and you'll get your 200. I think you are looking at 185-190 on a dynojet. Port the head and you might get there. Are you willing to run a little more compression?

 

yeah what else can i do to get more compression ?

 

X2. You should definitly have the head ported ... If you wanna make power....

 

if you have the cash i would have it done with a good valve job and you will be golden

 

I would love to hear the explanation for this.

 

hey does anyone know where i can get a good port and polish job in california??

i dont have the kind of money for portflow status but im willing to spend 300 or 400 depending on reputation around here.

and also if i ran some supertech or blox valves would i still need a valve job?

 

contact b20vtech on here, he's close by, i think he's in Fresno or sumthing, he does pretty good head work for a pretty good price too!!

 

I would get atleast a good valve job.

 

HELL YES!

I dyno'd my setup @ DNR yesterday.

Gsr block with p30 pistons,
DNR head work, valve job, and blox cams and valvetrain....

all the normal NA goodies....did 210 on pump gas (91 octane) and thats the actual corected number...no knife edged crank or anything like that

I highly recomend it! You did all the rest, don't miss out on the potential power.

If your in the Bay Area...I strongly recomend DNR. I am a very happy customer!

 

I am not sure what Dave (DNR) charges...but he is in Nor cali, and has a proven trackrecord!

 

How do the HSL' do on the street? I like the look of that cam profile.

 

The HSL's are a copy of the skunk 2 tuner 3 profiles. The skunk 2, pro 1 or 2 cams would be a better choice here. The performer X intake manifold would also be a better choice. If he wants to stay with Blox, I would look at the Blox B's or C's (skunk2 stage 2 tuner cams and Jun 3 copy cams respectively).

 

I don't know what kind of porting can be done for $300-400 to be honest. That is the price for a basic rebuild with no porting. Achieving good flow takes some time, and that is why the prices are they way they are.

If you are putting new valves in, yes you need a valve job. A good one will run you about $175, but remember you still have to pay for the disassembly, cleaning, vj, etc. $400 should get you a VJ, surface, cleaned, etc...no porting.