Head Porting etc.

That's the future man! Welcome to it. The guy is pretty sharp and is trying his best to make a go at a cottage business. From what I have seen his work is sound, plus he is a cool guy from the Mitten so Big Daddy represents!
 
Interesting, although I've never seen that method of porting to actually do anything usefull and more times than not its caused harm to the flow. Since you 2 are friends maybe you could explain to us how he valadates his work?
I know he's not using a flowbench because he says so. What about Laminar flow, or does he even consider that? What about the in-out ratio on the SC exhaust ports? He talks about matching exhaust ports to the manifolds and thats a big no no on a a set of heads where the in-out ratio is way off from the factory. Smoothing and shining port passages and bowls is not porting, there's awhole lot more to it than that.
I'm not trying to be overcritical but thats not the way to port heads. But you can make a nice set of large earings or matching boat anchors that way.
 
It is not just advertised for Super Coupe or even Ford only heads, The gentleman in question has experience working at Rocketsports (or Roush, not sure) and with Watson IIRC. I am not friends but rather he is a poster I have gotten good sound info from.

Any questions you have should be directed towards him. Like he states the only proof he has is in "results" and since I have yet to see a flow bench run 12's I can agree with his statement. I am not saying everyone should use him, I am not, I am saying if you are in the region he may be worth talking to.
 
as mike said without a flow bench he cant flow the heads right and if he ,
makes a wrong cut he can make them flow worse especialy the short turn radius if you dont know what needs to be done you can make a set of heads into junk,

mild pocket porting a nd unshrouding of valves is easy and our exh is a no no to match the lower port needs to be raised it impairs flow to make it bigger.

he may know his stuff but me Id like to see proof before I spend money.

Ive seen many people mess up heads by over porting or porting wrong areas bigger is not always better. velocitys are also a factor and re directing flow into exh manifold by grinding and welding upper port of exh. just my 2 cents
 
I know of a set of heads with welded larger exhaust ports than stock.
They flow more CFMs than Steg's.

Its not true that a SC port with extra CCs will not flow as Much or
as fast as a smaller port.

Most gasket matching is a waste because people do not take the
time or proper steps to assemble the motor .To take full advatage
of a gasket match.And why gasket match every manifold head port
to the gaskets.Hasent any of you ever heard of cutting the gasket.
To raise air flow entering a port.Then gasket match.

For a street motor or daily driver.A gasket match is just fine to do.
if you know how to do it right.You just don't lay the gasket on a
head or manifold,header.The gasket is placed in a consistant manner
to make your mark to even start the porting.You should use dowls
or shimed bolts in all bolt holes for matching gaskets.You then use
the same machined dowl to place gasket on the head,the glue,
then slide manifold on to gasket & head ,Then remove dowl and
install one bolt one at a time.

It takes more than just a good head porter.You also need someone
that knows how to assemble in a blue print style.To take full advantage
of the port work.

You cannot list what needs to be done for a proper port job.In this
post or even be able to write it down in one week.Any time you start
a post about porting here .The nay-sayers will come out of the wood
work from every direction.

And a flow bench is not a tell all or solve all porting tool.Its just one
flow tool to use.

The short side radius in the exhaust port of a SC 3.8 head is one
of the largest problems in the exhaust port.Take the exhaust valve
out.Then rub your finger in the port across the short side radius.
you will find that it has a sharpe feel.this should be rounded.Some SC
ports exhaust floor is so low,That the seat is above the exhaust
short side radius.If your head casting is like this,I would get another
set of head casting to work with.Or pull the seats and do a weld
build up,to form a short side radius.Then raise the roof just above
the short side radius on the floor.The same amont as the shot raidius.
For a street motor this should be about 80%+ of the size valve.For
a higher RPM motor take it up to 90+.



Randy
 
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Randy:
I know of a set of heads with welded larger exhaust ports than stock.
They flow more CFMs than Steg's.

Its not true that a SC port with extra CCs will not flow as Much or
as fast as a smaller port.


This is all true to an extent. You have to relocate the port itself to pull it off. ;)
 
Yes a portion of the port was raised.

I have worked on some H.D. heads were the port was raised so much.
That the port broke into the spring seats. The spring pockets seats
had to be welded and raised also.And longer valve stems were then
needed.A SC exhaust port must be handled close to the same.
To reach ultimate airflow from SC 3.8 castings..

The port I do not like on a 3.8 SC head.Is the middle intake port.

RANDY
 
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Yes those 2 ports suck as well But flattening the wall of the inside radius on that hicky bend that they make helps out alot.
 
MIKE 38sc said:
Yes those 2 ports suck as well But flattening the wall of the inside radius on that hicky bend that they make helps out alot.

Mike yes but the other side needs weld buildup.Kinda a tight spot to
weld.The fingers and torch get nice and toasty.I can only weld in there
a few seconds at a time.Then the glove is yanked off and I start the
waiven the fingers in the air to get them cool.

There is a place in Fairfeild ,IL.I forgot there name.I am sure you know
or have heard of them.Not to far north from you.WAYNES COUNTY SPEED
SHOP.

A freind took me down there to pick up some heads back about 1969
or 70.He had them saw some ford heads in half.Then port the insides
some.Furnace-brazed the heads back together.Then finished porting
the heads.

Sure would be nice to be able to do this to some aluminum SC 3.8 heads.
You know there is some smart & fast old men about 50 miles north of you
in IL.AND IN.

Randy
 
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Randy N Connie said:
Mike yes but the other side needs weld buildup.Kinda a tight spot to
weld.The fingers and torch get nice and toasty.I can only weld in there
a few seconds at a time.Then the glove is yanked off and I start the
waiven the fingers in the air to get them cool.

There is a place in Fairfeild ,IL.I forgot there name.I am sure you know
or have heard of them.Not to far north from you.WAYNES COUNTY SPEED
SHOP.

A freind took me down there to pick up some heads back about 1969
or 70.He had them saw some ford heads in half.Then port the insides
some.Furnace-brazed the heads back together.Then finished porting
the heads.

Sure would be nice to be able to do this to some aluminum SC 3.8 heads.
You know there is some smart & fast old men about 50 miles north of you
in IL.AND IN.

Randy

Oh yeah, I know the Wayne County boys. They built an engine for one of my buddies, we've been up there several times in the past. I had heard they shut down, is that not true?
Remember when there was a break in and Alderman's engines were destroyed?
 
There place burnt down again 3 years or so ago.The main guy works with
Dodge as an eng.

A lot of those southern IL. and southern IN. old guru racer went from
Ford to Dodge.TRAIDERS!!!!!! :) I think a lot has to do with it is.That
they all got ran off with there Ford power from racing with the NHRA.
And NHRA still has rules outlawing some Ford motors.

RANDY
 
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well the point I was making is to cut the port downward in the exh would be wrong they dont need to be opened up towards the bottom they flow better witht hte bottom of port raised,

yes get rid of the ridges and sharp edges but not match florr of port to gasket
 
Personally my heads were a set of RPM Miks that were sent to Rick Swain at Livernois to finish, as well as the Intake. The header flanges are designed straight from the finished welded exhaust port with 1 5/8" primaries, 2.5" collectors. The 4.2L short block and pan have ARP studs all the way through to keep her together, the heads were originally from a 90 SC, the cam is a RPM 216*/225*, .495"/.521" lift, 110LCA unit with roller rockers. A C4 and a 3.90:1 gear ratio help a bit!

The big difference is My car weighs 1900lb and most of yours weigh 4000!

151_5106.thumb.jpg


And before you say it yes the car looks like crap right now, the previous owner sprayed it in DP90 so I get to strip the hell out of it.
 
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