Ok I am porting my 289 heads

Heads or C6AE 289 heads from a '66 Mustang

Ok so far this is what I have done to the exhaust side



First I smoothed out the bump in the exhaust port (thermactor, egr, or whatever bump) But the roof is not completely flat. The upper edges are a little higher, can I go higher??
Second if you look to either side and to the rear of the exhaust valve guide, it is still as cast, Can I clean that up and remove some of the valve guide ??

Thanks
Rusty
PS more pictures to follow!

<font size=-1>[ This Message was edited by: rusty105 on 7/9/06 10:12pm ]</font>

<font size=-1>[ This Message was edited by: rusty105 on 10/9/06 9:54pm ]</font>

Looks good so far!!
[addsig]

You want to shape that guide area like an airfoil pointing to the middle of the port. In the picture it looks like it is going to cause turbulance to the flow that will be highest in the direction of flow. It is beneficial to have a more rounded curve at the inside radius of the bend from the chamber to the pocket. It looks like you removed too much material there and caused a "step" instead of a rounded radius.
I would sugest getting a porting template set and use it to tell you what material to remove where. You can actually cause so much turbulance by removing material in the wrong areas that your ports are bigger but flow less air than they did when you started.
Paul

What is a porting template set and were can you find them? What do they cost?

I have not heard of a porting template set. I do know that the corresponding gasket set would be very useful. (intake and exhaust) [img]/forums/images/smiles/icon_cool.gif[/img]
[addsig]

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On 2006-10-08 04:56, PaulS1950 wrote:
You want to shape that guide area like an airfoil pointing to the middle of the port. In the picture it looks like it is going to cause turbulance to the flow that will be highest in the direction of flow. It is beneficial to have a more rounded curve at the inside radius of the bend from the chamber to the pocket. It looks like you removed too much material there and caused a "step" instead of a rounded radius.
I would sugest getting a porting template set and use it to tell you what material to remove where. You can actually cause so much turbulance by removing material in the wrong areas that your ports are bigger but flow less air than they did when you started.
Paul
</BLOCKQUOTE></FONT></TD></TR><TR><TD><HR></TD></TR></TABLE>

The picture really doesn't do justice to the port. The glare is distorting the view. As you can see the area immediately around the valve guide is untouched, except for a little on the downstream side of the exhaust valve. I haven't started to remove material from the roof, except the bump, and was looking for an idea of how high I can go with the roof, compared to stock, my guess is there is some more room up there.

On another note, or notes.
1) Anyone have suggestions for taking pictures without all the glare?
2) Anyone have a source for templates for the ports, or maybe measurements??

Thanks
Rusty

use a nylon or piece of tissue paper over the flash

Take the head outside. Don't use the flash. Natural light will fill all the dark spots and not leave a shiny mess behind.

FE
[addsig]

OK did some port molds today [img]/forums/images/smiles/icon_spin.gif[/img]

First one is Side by side, stock on right.


Second one is top view, stock on bottom



From what I can see the short side radius looks the same on both. Not sure if that is good or bad. From the top view you can really see how much the 'bump' protrudes into the port, and how Ford tried to compensate by 'bending' the port wall. I cleaned up the wall so it is pretty straight.

What does everyone think so far?
Thanks
[addsig]

OOPS Double post

<font size=-1>[ This Message was edited by: rusty105 on 1/7/07 11:45am ]</font>