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Thread: 4 inch exhaust?

  1. #41
    turbo addict
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    Re: 4 inch exhaust?

    Quote Originally Posted by rx2mazda View Post
    I have a full aluminum exhaust and muffler after about 12-15 inches of SS Dp. It cracked at the same weld point twice during the first 2 months or so. Both times it cracked was during acceleration with wheel hop being the culprit. Once I got the engine and wheels to play nice during accel it hasn't been a problem. Mine is full 3inch.
    Any flex joints or ability for stuff to move?
    Brent GREAT DEPRESSION RACING 1992 Duster 3.0T The Junkyard - MS II, OEM 10:1 -[I] Old - 11.5@125 22psi $90 [U]Stock[/U] 3.0 Junk Motor - 1 bar MAP [/I] 1994 Spirit 3.0T - 11.5@120 20 psi - Daily :eyebrows: Holset He351 -FT600 - 393whp 457ft/lb @18psi 1994 Spirit 3.0T a670 - He341, stock fuel, BEGI. Wife's into kid's project. 1990 Lebaron Coupe 2.2 TI/II non IC, a413 1990 Spirit 3.0 E.S. 41TE -- 1993 Spirit 3.0 E.S. 41TE -- 1994 Duster 3.0 A543 1981 Starlet KP61 Potential driver -- 1981 Starlet KP61 Parts -- 1983 Starlet KP61 Drag 2005 Durango Hemi Limited -- 1998 Dodge 12v 47re. AFC mods, No plate, Mack plug, Boost elbow -- 2011 Dodge 6.7 G56

  2. #42
    Supporting Member Turbo Mopar Contributor rx2mazda's Avatar
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    Re: 4 inch exhaust?

    One flex joint on the downpipe and everything hanging on original exhaust rubber donuts. So there is some play. Wheel hop still blew the first welds on my intake.....i mean exhaust - twice.
    Last edited by rx2mazda; 06-19-2015 at 01:24 PM.

  3. #43
    turbo addict
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    Re: 4 inch exhaust?

    Quote Originally Posted by rx2mazda View Post
    One flex joint on the downpipe and everything hanging on original exhaust rubber donuts. So there is some play. Wheel hop still blew the first welds on my intake.....i mean exhaust - twice.
    How did your floorpan fair?
    Brent GREAT DEPRESSION RACING 1992 Duster 3.0T The Junkyard - MS II, OEM 10:1 -[I] Old - 11.5@125 22psi $90 [U]Stock[/U] 3.0 Junk Motor - 1 bar MAP [/I] 1994 Spirit 3.0T - 11.5@120 20 psi - Daily :eyebrows: Holset He351 -FT600 - 393whp 457ft/lb @18psi 1994 Spirit 3.0T a670 - He341, stock fuel, BEGI. Wife's into kid's project. 1990 Lebaron Coupe 2.2 TI/II non IC, a413 1990 Spirit 3.0 E.S. 41TE -- 1993 Spirit 3.0 E.S. 41TE -- 1994 Duster 3.0 A543 1981 Starlet KP61 Potential driver -- 1981 Starlet KP61 Parts -- 1983 Starlet KP61 Drag 2005 Durango Hemi Limited -- 1998 Dodge 12v 47re. AFC mods, No plate, Mack plug, Boost elbow -- 2011 Dodge 6.7 G56

  4. #44
    Supporting Member Turbo Mopar Contributor rx2mazda's Avatar
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    Re: 4 inch exhaust?

    Quote Originally Posted by Ondonti View Post
    How did your floorpan fair?
    The diamond plate got a little scratched up but, nothing a little NOS couldn't fix.

  5. #45
    Supporting Member Turbo Mopar Contributor zin's Avatar
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    Re: 4 inch exhaust?

    Quote Originally Posted by rx2mazda View Post
    ....nothing a little NOS couldn't fix.
    Nitrous fixes everything!

    Mike
    "The Constitution is not an instrument for the government to restrain the people, it is an instrument for the people to restrain the government - lest it come to dominate our lives and interests." - Patrick Henry

    Bad laws are the worst sort of tyranny.
    - Edmund Burke

  6. #46
    ...if you know what I mean... Turbo Mopar Contributor csxtra's Avatar
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    Re: 4 inch exhaust?

    Quote Originally Posted by rx2mazda View Post
    The diamond plate got a little scratched up but, nothing a little NOS couldn't fix.
    Was the diamond plate made out of sparking aluminum?
    Warren Hall
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