exhaust question - Ford Powerstroke Diesel Forum
 
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post #1 of 7 Old 04-06-2013, 06:08 AM Thread Starter
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exhaust question

'97
I have the Diamond Eye 3" down pipe. I have gutted the cat. Here in Colorado, Arapahoe County anyway, they want to see the cat. Just visually see it. So if I order the Diamond Eye 4" exhaust, cat back, muffler delete the entire pipe is gonna be 4". The small pipe coming off the cat is a 3". Do I simply get an expander from 3" to 4" to fit the new pipe? And then secure the pipes with a pipe clamp?
Thanks
Twitch
Aurora, co
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post #2 of 7 Old 04-06-2013, 08:44 AM
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no ... cut the cat housing BACK to where it's 4 inch, and weld the new pipe on there.....clean it up a bit and spray it with aluminum paint, (not the shiny ****, duller stuff),
and go out and get it hot once, it will look factory, and you won't have a 3" restriction in you exhaust.

'97 Centurion. F350 4x4 CCLB
Full Force 180cc Stage I's, D66, SRP-1.1, ARP, Banks IC, DIY E-Fuel, EBPV Del & Gut'd Ped., BD Exhaust Brake., SD IDM, HPX, BstFoolr, 4" DP - 4" exh,
6.0 Fan, 180 T-Stat, DIY Don.105006 AF, CCV Mod, BTS, W/ SD Trans Lines, Tru-Cool Max, PML Trans Pan, Bumper Mod, IssPro Gauges, Fluidampr, Mellings LPOP.....
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post #3 of 7 Old 04-07-2013, 12:25 PM Thread Starter
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Don't have a welder or any real access to a welder. Would JB Weld work?
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post #4 of 7 Old 04-07-2013, 12:27 PM
DERAIL MOD!!!


 
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Use band clamps then, not sure I would want to jb weld an exhaust

-Kris-
2000 excursion V10 2wd 230k
2000 Excursion 7.3 4x4 246k
1995 CCLB DRW 324K
2001 CCLB DRW 319K
Dp tuner infinity, exhaust, intake, chipped, tricked, and wrecked
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post #5 of 7 Old 04-07-2013, 02:22 PM
Yeah it's a Turbo Diesel
 
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Just take it up to any muffler shop, they'll weld it cheap


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post #6 of 7 Old 04-07-2013, 05:47 PM Thread Starter
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Quote:
Originally Posted by 351fifty View Post
Use band clamps then, not sure I would want to jb weld an exhaust

Thank you for replying.
I just looked at my cat housing. It comes straight to a 3" pipe going to the exhaust. No gradual decrease, just straight to 3" pipe. Any recommendations on this? Do I simply work with what I have? Have just enough of the 3" pipe so the 4" can fit over it securely?
Twitch
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post #7 of 7 Old 04-08-2013, 03:45 AM
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Quote:
Originally Posted by twitchcvma View Post
Don't have a welder or any real access to a welder. Would JB Weld work?
Not gonna flame you for this... But dude really???

Quote:
Originally Posted by twitchcvma View Post
Thank you for replying.
I just looked at my cat housing. It comes straight to a 3" pipe going to the exhaust. No gradual decrease, just straight to 3" pipe. Any recommendations on this? Do I simply work with what I have? Have just enough of the 3" pipe so the 4" can fit over it securely?
Twitch
If you are ordering the CAT back system for the correct year of your truck it will come with the correct adapter to go from 3" to 4"... Its a bolt on so it should come with all the clamps you need.

_____________________________________________
Seth

Stroked_NY_023
95' F-350 CCLB DRW POWERSTROKE
08 Axle/4x4 conversion, 5spd conversion, 6637, 5" SP exhaust, gearhead tunes

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