Port Matching, on the intake.

Despite reading and re reading, posts saying "there is little or no significant gain in power, by doing intake port matching"

I decided to ignore it, and check out my port alignment.

Check it out;



I think, there are one or two horsepower there.

I have very noticable marks on the intake manifold, from the gaskets, so it makes it pretty easy, to mark up the manifold.

Took me one hour to do one side, the other side tomorrow night.

I have 7 of 8 of the intake manifold ports done. One more to go, and then I'll do a detail on the ports.

I took the heads by my engine shop, and got them disassembled, washed and brought them back home.

The intention is to do my own port and polish, along with a combustion chamber detail. I've done a lot of research on porting these heads, and what to be careful of.

I also picked up a couple of BBC (used) valves, to protect the seats, while I am doing the combustion chambers.

It should not be too bad, as it is just detailing. I'm not planning on removing a lot of material. Emphasis will be on the bowls. Smoothing the rough spots. Nice radiuses. Polishing the exhaust ports, and unshrouding the valves in the combustion chambers.

Doug, sorry to hear about your face!! Hope you get better and get the car back on the road soon.

Thanks :)

Face looks beautiful, now. I am entering myself in one of those "top model" shows next year (haha)

NOT!:lol:

Pretty much healed up now.

Ports on the intake are complete. I smoothed out (not polished) the roof of the ports (long radius) and I am using a coarse file to rough up the shorter (bottom radius), inside the intake manifold.

I started on the heads, beginning with an exhaust port.

A little smaller than the intake, but more forgiving.
I think it looks good so far. I got most of it roughed out in 30 minutes.

I picked up one of these too, but havent really used it yet;


Pics soon

Now that is hilarious right there. :lol: (Sorry Doug :D)

I am laughing too, what else can you do? I just wonder what part of my body, I'm going to f-up next ;)

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Porting work so far;

Intake is pretty much done, unless I change the shape of the ports on the head.



The last thing, I am going to do is hit the ports with a coarse file, to texture them a little.

Heads;

I started with an exhaust port, because it's smaller, and a little more forgiving, if I F-it up. I have a pretty good understanding of aerodynamics and hydrodynamics, so used that in shaping the exhaust port, and bowl.

I took into consideration, the shape of the header opening, and raised the port slightly. Next I ovaled the port slightly, again to match the header port, since they are a little taller than the heads.

The bowl is quite a bit deeper on the exit side of the port.



(Head is upside down, in pic below) I didn't do much with the short radius, other than a slight polish. I did turn down the port exit, into the header, as the header pipes all turn down



Once I'm done, the exhaust will get a nice polish, then I can replicate on the other 7 exhaust ports

So I am thinking, that with the improved ports, I might need a few more cubic inches, or a more agressive cam. I like my existing cam, though.

Checking out one of these;
http://www.survivalmotorsports.com/i...ank_edited.jpg

Which will bump me up about 30 cu, to 462

I should reach a conclusion, over the weekend.

You could run one of Dougs POP 4.375 steel cranks and a hydro roller and make a bunch of hp and torque all below 6k rpm.

The Ports are one piece but don't forget the valve job that can make an even bigger difference in flow especially at low lift numbers.

Hmmm yeah checked out the 4 3/8" crank, but a lot more issues, including camshaft clearance.

I have all the ports pretty well roughed out. I started unshrouding the valves, tonight. Once the valves are unshrouded, then the plugs, chambers, and bowls.

Lastly I polish the exhausts, and chambers.

Don't know who's selling you the story of cam clearance with that size crank. I'm running a solid roller that is bigger than any usable hydro and no issue there, no real issues with the 4.375 stroke period except the upcomming traction problems. :D Now 4.5 like Jay Brown originally went to run in his HR that's a different story.