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Old 06-10-2015, 10:28 PM   #414 (permalink)
changzuki
Changfa diesel + Suzuki
 
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Join Date: Jul 2012
Location: Northern, NY
Posts: 527

Centurion - '74 FIAT X1/9 Centurion Full Race DNA
Last 3: 143.5 mpg (US)
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Exhausting work!

While waiting for transmission parts, certain items on Centurion were revisited and a decision was made to try and improve on them.
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First on the list was the exhaust system. For all practical purposes, the standard exhaust on the Spitfire looks almost like it was an afterthought. The exhaust is generally the lowest point on these cars. Centurion's rocker panel is only 4.5 inches above the pavement - and the exhaust in spots is a bit lower and has scraped only a few times but it's always in the back of my mind when driving.
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Time to do something different~
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The following photo shows Centurion's the entire exhaust from the engine to rear bumper (see red line). This is now history.
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The replacement for this is much shorter, lighter, and is no longer the lowest point on the car (see green line)...
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Here's a comparison of the new exhaust next to the old muffler:
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On its own against the trailer shows in a little better:
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The whole assembly is about two-feet long.
Tucked in that two feet is a 9-inch glasspack.
Following it there's an additional tip with a perforated disc embedded inside to quiet it down to non-ticket levels.
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Where does it exit the car? From the photo below it should be real easy to spot!
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There's some important benefits to this new setup:
1) Cheap
2) Very simple
3) Very lightweight
4) Elimination of a major undercarriage heat source
5) Which enables the use of a full bedliner belly pan with no danger of melting
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I may be done for now - but trust there is more coming very soon!
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~CrazyJerry

Last edited by changzuki; 08-03-2018 at 11:38 PM..
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