[DeTomaso] Wilkinsons new GTS style exhaust system

[Asa Jay Laughton]

Doug,

Great report.  I'm concerned by the 1-3/4" OD of the primary tubes.   
I'd like you take a photo of the header flange from the head-side so I  
can see how the flange looks and would mate to a stock 4V head.

My concern revolves around an issue I had with Hooker Headers of the  
same primary tube size.  They didn't seal since the weld line on the  
flange (used as the mating surface to the head)didn't mate to the head  
properly, allowing leaks at certain points around the circumference.    
  Their 2" Super Competition headers were much better.

So can you please send us a photo?
Thanks,
Asa Jay


Quoting doug351c <doug351c at gmail.com>:

> I just took delivery of one of Wilkinson's new complete GTS style exhaust
> systems (headers, exhaust pipes, mufflers & resonators).  It comes in two
> versions, stainless steel and mild steel; I opted for the stainless version
> (IT'S DROP-DEAD GORGEOUS!).  They're currently available at what Steve calls
> a special price of $1285 (stainless) or $885 (mild steel).  IHMO, this is a
> real steal - pun intended.
>
> They're modeled after the factory 74 Pantera GTS exhaust but claims to flow
> far better and from that stats below, this should be a true statement.  Both
> versions' resonators are made from #209 stainless steel and then polished to
> look like the factory chrome.  The exhaust pipes, mufflers and leading
> portion of the resonators are painted black to match the factory look.  The
> stainless version substitutes #209 stainless steel for the header, tailpipe
> & muffler case and the tainless headers come polished.  The steel version’s
> headers are silver-zinc plated.
>
> Steve said they found that the resonator ID was the largest restriction in
> the factory system so they enlarged it's ID by 6mm (1/4”) and redesigned the
> muffler innards for better flow.  Of course, both the header primaries and
> the exhaust pipes are mandrel bent.  The complete system was developed on a
> dyno using a 406 Cleveland stroker and he tried many combinations to arrive
> at the system’s final configuration.  A cool feature is that their ball and
> cone type collectors will allow you to positoin them to look just right on
> the car.  He recommended the headers be wiped down with alcohol, after
> installation, but prior to starting the engine, to prevent fingerprint
> stains.
>
> Here are the stats:
>
> Header flange thickness:  9mm (0.35”)
> Header primary pipe OD:  44.8mm (1-3/4”)
> Collector OD: 63mm (2.5")
> Collector type:  ball & 3-bolt collar
> Collector 3-bolt collar thickness: 11.2mm (0.44”)
> Exhaust pipe 3-bolt collar thickness: 7.2mm (0.28”)
> Exhaust pipe OD: 60mm (2.4”) OD
> Resonator OD: 76.3mm (3")
> Resonator ID: 47mm (1.8")
> Muffler: 9-3/4" wide x 9-1/4" long x 4-3/4" thick
>
> Doug Braun
> blue73L #5505
>
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-- 
Asa Jay Laughton - sent from somewhere other than home
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