Porting reamers?

[Paul Workman]

While running down a couple more carbide burrs, I ran across a company that makes carbide burrs and reamers to order. The LT5 heads are relatively soft aluminum, and crawling all over the engine to get to the ports, AND have each come out "poifect" with a burr...can we say challenging at least? There is an "ideal" transition angle needed to prevent reverberations of the air column pulse as it enters the head; it is rather long/precise and a reamer might be a helluva lot easier to "get it right" than using a burr. (I gather that lots of folks just match the IH port, more or less on top-end only jobs. I would guess it is (in part at least) because of the difficulty, no?)

Anywayz, if it isn't too outrageous $$ wise, it might make at least a portion of the P&P work a little more precise, if not easier too? (hope-hope) I should know something in a few days. I'll keep y'all posted!

P.

[kenthompson]

Dang it Paul, if you find a way to easily do the heads while still on the engine... And I just put my car back together...

I'm gonna be p/o'd.....

[Paul Workman]

Originally Posted by kenthompson

Dang it Paul, if you find a way to easily do the heads while still on the engine... And I just put my car back together...

I'm gonna be p/o'd.....

I hope to hear something today - got three sources taking a look at it. And, as it turns out, there may be a significant shortcut available (read: regrinding and existing reamer).

P.

[LGAFF]

Paul,

The only catch is that material is only removed at the mating surface from one side of the port in a cresent shape, if you go straight in you will basically siamese the head.