I'm not sure if when people speak of porting manifolds, is that simply match porting? Or is there more to it? Is the plenum ported any, is the casting smoothed out any?

Porters please speak up. I would really like to know more about this.

 

bump

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by WAFFLES &raquo;</TD></TR><TR><TD CLASS="quote">I'm not sure if when people speak of porting manifolds, is that simply match porting? Or is there more to it? Is the plenum ported any, is the casting smoothed out any?

Porters please speak up. I would really like to know more about this.</TD></TR></TABLE>

Its just as important as the head
Some of my V8 manifolds make 40hp more vrs other ported pieces
50hrs time in a mnaifold easy

 

brad is pretty good at keeping things short and not fully explaining what he means

with porting an IM, similar ideas are applied as to a head. runner shapes, surface of the inside. how the air curves around.

i would imagine playing with injector location can make a big difference as well if your head is ported alot and your intake manifold is different

 

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

Its just as important as the head
Some of my V8 manifolds make 40hp more vrs other ported pieces
50hrs time in a mnaifold easy</TD></TR></TABLE>

So can you get 20 more hp on a 4 cyl. IM ? I'll take two please

 

u mean like this ?



I made mine....

"what goes into this process?" ... one word 4 letters = TIME!

 

With that manifold pictured above, did you cut the back off of it and port it that way, or did you try and get in there with the manifold completely together? I know that Endyn, and probably MAX_CFM as well, cut off the back of the manifolds, do the porting they need to, then weld the two pieces back together...

 

yep...

I have a Tig welder, i had to beef up the sidewalls of my plenum, because the stock casting wouldn't allow more than 3/16th of porting on the walls.. so i beefed up the walls, then dremelled them down and then did the inside and welded the cap back on and then did the outside...

skunk2 manifold have more beef to work on compared to stock manifolds.



can you find the seam ?

 

Wow that is a nice clean job!!!

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by jk23662 &raquo;</TD></TR><TR><TD CLASS="quote">Wow that is a nice clean job!!! </TD></TR></TABLE>

But how much power did you make...

 

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

I have a Tig welder, i had to beef up the sidewalls of my plenum, because the stock casting wouldn't allow more than 3/16th of porting on the walls.. so i beefed up the walls, then dremelled them down and then did the inside and welded the cap back on and then did the outside...

skunk2 manifold have more beef to work on compared to stock manifolds.



can you find the seam ?</TD></TR></TABLE>
do you have pics of when it was cut and ware you welded on the sides??

thanks
chris

 

Dh-racing.com promises 20 whp from there stock ported manifold/68 mm tb combo. They have a dyno of making 21 whp on a stock d16z w/ a ported z6 manifold to a 68 mm tb. Very impresssive.

 

[QUOTE=HotWheelz]u mean like this ?



can you go to smooth??&gt;
i thaught that there should be some "roughness" for turbulance
i don't know
anyone??
brad?

 

When Brad ported my intake manifold, I cut the back off for him to speed up the process. I think that there are still some pictures of it on his web page.

 

What's the average cost of having this done? Is it more expensive than extrude honing?

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by jdmcx &raquo;</TD></TR><TR><TD CLASS="quote">[QUOTE=HotWheelz]u mean like this ?



can you go to smooth??&gt;
i thaught that there should be some "roughness" for turbulance
i don't know
anyone??
brad?
</TD></TR></TABLE>

im pretty sure that is only in the head ware you need the turbulance. its to keep the fuel in the air and prevent it from puddleing or sticking to the walls... someone corect me if im wrong

 

that's right.... but even at that i have a portflow head, and suprisingly its also smooth...and the motor previously made 235whp/all motor h22a. So i can't see this causing ANY problems...

i'd be interesting to see other work by RLZ or Larry....

 

here some more pics i found (didn't know i had)

 

Do you have any dyno plots to show how much HP the porting was worth?

 

not yet, between work, days off, GF, other dependancies and budjet .. it kinda prevented me... and since the dyno is some 700km (500) miles driving for the closest dynojet it makes it hard, running on a partial basemap from hondata s200 and running strong.. i'll go when i get to it.. built the motor completely and dropped it in my EK and converted it to standard, huge different from the stock automatic 1.6

 

So you made a lot of changes-no way to tell how much HP the manifold porting alone was worth. Oh well-looks nice

 

one word (canada) there is "ONE" dyno jet in the eastern side of canada.. which is about 1/3 of the country...

if there was one i would....

not all us Cannucks have the ability to drive our cars around the block to the dyno.. like most of you guys in the states

ahahahha...

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by HotWheelz &raquo;</TD></TR><TR><TD CLASS="quote">one word (canada) there is "ONE" dyno jet in the eastern side of canada.. which is about 1/3 of the country...

if there was one i would....

not all us Cannucks have the ability to drive our cars around the block to the dyno.. like most of you guys in the states

ahahahha...

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


ZZZZZZZING
i know how you feel.. thares even less dynos in western canada, inless i make the 6hour drive to calgary