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Improvements

1. Airbrushing... ... 5. Uprights - ... 6. Rod Ends & ... 7. Airbrushing... 8. Exhaust 9. Pulley -... 10. Brakes 11. GMPP Clutch ... 17. Lens Tinting

Exhaust

Upgrades to the exhaust system. Stock is 2.25" diameter with a very inexpensive muffler and is quite restrictive. It became particularly loud and raspy over time. New system is 3" and fabbed to allow quick swapping between a Borla Sportsman and Cherry Bomb Vortex muffler. It flows much more freely and improved the sound considerably.

Date: 10/11/2008
Size: 51 items
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stock system parts
 
 

stock system parts

parts that make up the stock system

Date: 10/05/2008
Views: 250
stock exhaust on car
 
 

stock exhaust on car

stock exhaust is 2.25" diameter and quite restrictive

Date: 10/04/2008
Views: 173
stock header split
 
 

stock header split

run it hard on the track and you begin to see signs of excessive backpressure in the stock system - photo by fellow Atom owner 1965cobra427

Date: 07/26/2007
Views: 202
stock flex section split
 
 

stock flex section split

more evidence of excessive backpressure - photo by fellow Atom owner silver

Date: 10/05/2008
Views: 232
stock muffler internals
 
 

stock muffler internals

not much in the stock muffler, and the packing degrades over time - photo by fellow Atom owner bolus

Date: 03/30/2008
Views: 218
stock muffler contents
 
 

stock muffler contents

this junk was shaken out of my stock muffler (w/ approx 7k miles on it)

Date: 10/09/2008
Views: 221
new system size comparison
 
 

new system size comparison

3" diam piping will be used - a nice upgrade from the stock 2.25"

Date: 10/09/2008
Views: 208
fabricator at work
 
 

fabricator at work

I was lucky to find a local race fab shop willing to take on the job.

Date: 10/09/2008
Views: 211
fab - header flange
 
 

fab - header flange

larger-diameter flange with relocated O2 bung being mocked up on stock header

Date: 10/04/2008
Views: 232
fab - piping 1
 
 

fab - piping 1

not much clearance for vertical 3" pipe between frame and block

Date: 10/04/2008
Views: 221
fab - piping 2
 
 

fab - piping 2

Date: 10/04/2008
Views: 228
fab - piping 3
 
 

fab - piping 3

a Borla muffler was chosen as muffler #1 to try

Date: 10/04/2008
Views: 212
fab - piping 5
 
 

fab - piping 5

Date: 10/04/2008
Views: 232
fab - completed header flange
 
 

fab - completed header flange

3" flange and new O2 sensor bung completed

Date: 10/09/2008
Views: 224
fab - intermediate pipe
 
 

fab - intermediate pipe

a short intermediate pipe was needed to aid in ease of installation/removal

Date: 10/09/2008
Views: 198
fab - finishing touches
 
 

fab - finishing touches

fabricator adding his calling card

Date: 10/09/2008
Views: 215
fab - proper credit
 
 

fab - proper credit

recognition is required at this level of quality

Date: 10/09/2008
Views: 217
fab - completed 1
 
 

fab - completed 1

fabrication finished

Date: 10/09/2008
Views: 239
fab - completed 2
 
 

fab - completed 2

intermediate pipe

Date: 10/09/2008
Views: 224
fab - completed 3
 
 

fab - completed 3

fabrication finished, Borla muffler installed

Date: 10/09/2008
Views: 266
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