[DeTomaso] Header Questions

[Charles Engles]

Dear Rob,


            I struggled with a similar mismatch when I attempted to replace
the factory stock headers on my first engine.   When it came time to replace
them with some pre-owned Hall Big Bore headers (? I think), I remembered the
misery of the header and port mismatch. 

            I checked with my friendly machinist and local circle track Ford
engine builder.  He said he could align the slightly cattywampus headers.
He proceeded to do so.   I asked him how he did it and IIRC, he mounted them
to a mule 351C cylinder head and proceeded to apply heat and then let it
cool.   I think that is what I understood.  

            Whatever secret alchemy he used, the final product lined up
perfectly with my heads and I would think that your headers could be fixed
with a similar technique.   I would go take the headers to the race shop
guy.


                     Warmest regards,  Chuck Engles

-----Original Message-----
From: detomaso-bounces at realbig.com [mailto:detomaso-bounces at realbig.com] On
Behalf Of Rob Dumoulin
Sent: Friday, May 07, 2010 5:13 PM
To: pantera list
Subject: [DeTomaso] Header Questions

My Beloved Gurus,

I bought a pair of used Hall Pantera headers that have no flange connecting
the tubes at the ports.  The headers have not been on a Pantera in years.
 Trouble is, the gaskets and port plates do not line up to these headers.
 The front two tubes line up perfectly.  The back two are off by at least
1/4 inch.  Is it common for unflanged tubes to be off by that much?

Even if I could easily put them on, they won't line up to the rest of my
exhaust. I went to a local muffler shop to see if they could install/mount
them so I wouldn't have to tee off half the island running straight pipes to
the muffler shop.  He says they won't fit.  A race shop guy said they would
over the phone, but he never saw them.

What say you guys?

-- 
Island Rob
#1488
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