harsh reality

i dont have any money to get a new intake right now but i have a stock spare. i was thinking about just boring it out myself and putting on a b16throttle body. any feed back is welcome.

harsh reality

oh! ya! it's a d16z6 sorry forgot to mention that.

cibao2ner

harborfreight has a decent too for that and an inline voltage regulator to lower speed....and buy a carbide bit from ebay....

93egSLEEPER

I have always been against DIY on stuff like this...the need to get everything symetrical for the motor to run properly on all cylinders evenly is a huge issue to pay attention to.

EsotericImage

iTrader: (8)

you want to match the TB to the manifold..

Just save up for a manifold. JHP has a combo on the cheap and have it ported professionally. Id hate to have you screw up a new mani while you try to port it

cibao2ner

he says he has a spare....just port match tb to mani...and take a gasket and gasket match the runners an inch into it....no need to hog out the manifold...

harsh reality

What's JHP

apwhat

i would save your time and money, post up pictures of your car. I would make sure everything else is in order before you try to squeezer a few hp..

like if your quarter panel is rusted threw, why mod the car? focus on affording better, etc

FlewByU352

It's a D series, a new motor in pristine condition is $200... bore and modify whatever you want!

crazydominicanman

Jhpusa.com

Great website to buy parts from. Check it out.

b20vtech

This process "if done correctly" can increase HP on certain applications, but Do this at your OWN RISK!!

tools needed;

die grinder tool
speed control unit
carbide bit
cartridge rolls 60-80 grit
flapper stick w 120fine grit for finishing texture
gasket
micronmeter
machinist dye
and something use for scribing

clean the surface with carb or brakekleener, spread machinist dye around the hole of your manifolds opening,place gasket over, use something sharp to scribe around the inside hole of the gasket, start porting about 1-2" in with your die grinder and carbide bit.


keep porting until you reach the scribe line and take your mic and measure the inside of the hole to make sure its true size to your scribe line, notice you will have some sharp edge around the inside edge of the hole depending on what manifold you are working with, make sure to radius those edges to reduce turbulence.

after you are done porting and measuring, take your cartridge roll and clean up those carbide marks and finish it with your flapper stick and 120fine grit.
should look like this once you are finish


finish product


This portwork on the Skunk2/blox manifold with 68mm TB has shown a 13whp gain over a non-reworked skunk2/blox manifold with 68mm tb on a R&D dyno testing with a customers stock eternal b20 vtec engine.

FlewByU352

Great DIY right there, with the proper tools and some understanding anything can be done.

crzdmngz

x2

Enoc

thanks for explanation...

can you describe how the gasket match is done on the manifold? tips ? since the injector hoel is there...wanto to know how is done....

i want to port match my ITR manifold...thanks again btw...

b20vtech

I usually leave the intake runners the original size if the plenum's not cut open to port from the runners entrance, but I enlarge about 1" into the Intake port by .5-1mm wide to create a reversion step when the intake manifold is bolted up to the head.

Enoc

thank you...I had my ITR cut up...

what die grinder do you use?

b20vtech

Makita Model# GD0800C