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10-31-09, 01:13 PM
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#1 (permalink)
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Forum Regular
Join Date: Oct 2009
Posts: 115
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Muffler blow apart
The muffler on my 80 is coming apart at the seams. The back panel (end cap) has separated from the rest of the can. Would that be from to much back pressure or just because? I can have my friend weld it but I don't want to do that if the muffler is plugged.
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10-31-09, 01:16 PM
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#2 (permalink)
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Forum Regular
Join Date: May 2009
Posts: 41
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usaly when a muffler blows apart its from two things. First is from a large back fire. second is from age, most mufflers are made from light gauge steel and welding it back together is amost imposible
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10-31-09, 03:15 PM
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#3 (permalink)
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Site Addict
Join Date: Jul 2006
Location: North, AL
Posts: 1,716
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waste of time to try and weld the muffler, get a new one. Age and wear is what kills them unless its rust.
__________________
1986 FJ60
5.7 Vortec
Last edited by Elbert; 10-31-09 at 10:44 PM.
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10-31-09, 06:33 PM
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#4 (permalink)
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livin a poor college life
Join Date: Aug 2006
Location: Pleasant Grove UT
Posts: 3,274
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__________________
Lane Anderson
'91 TRD FJ80 "Katie" - 265k, 3FE, 3H4, 860+1/850J+1, locked, 33's, Taco rims, custom front bumper, custom roof rack, LineX'd, Dual batts, CB, HIRs, OBA, GPS, aux lights, aux fan, desmogged, pintle hitch, ROTF
'63 VW Type 1 - 43k, 1600cc, Anthracite, 100% restored, Blog
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"VWs and Cruisers... How can you go wrong?!?" -CreeperSleeper
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10-31-09, 09:43 PM
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#5 (permalink)
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250+ Club
Join Date: Sep 2006
Location: Western Wa.
Posts: 673
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Quote:
Originally Posted by Lka1988
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You might wanna invest in an exhaust hanger out back man, that thing shakes like crazy.
__________________
1966 FJ-40 Under Construction.
1985 4Runner. Something to play with while the 40s out for mods.
2003 GMC Sierra Quad-cab. Duramax diesel w/ all the toys. Diablosport Predator tuner and 33" tires.
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11-01-09, 09:56 AM
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#6 (permalink)
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livin a poor college life
Join Date: Aug 2006
Location: Pleasant Grove UT
Posts: 3,274
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Haha yeah, all but one mount is broken.
__________________
Lane Anderson
'91 TRD FJ80 "Katie" - 265k, 3FE, 3H4, 860+1/850J+1, locked, 33's, Taco rims, custom front bumper, custom roof rack, LineX'd, Dual batts, CB, HIRs, OBA, GPS, aux lights, aux fan, desmogged, pintle hitch, ROTF
'63 VW Type 1 - 43k, 1600cc, Anthracite, 100% restored, Blog
----
"VWs and Cruisers... How can you go wrong?!?" -CreeperSleeper
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11-01-09, 01:42 PM
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#7 (permalink)
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Forum Regular
Join Date: Oct 2009
Posts: 115
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So if I'm going with a new muffler is 3" to much for the stock 4.5L? If I did 3" from the cat back then next summer had the rest of the exhaust done would I look to much low end?
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11-01-09, 02:20 PM
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#8 (permalink)
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Forum Lifer
Join Date: Oct 2006
Location: Medford, OR
Posts: 3,451
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Are you running a FI motor?
If you're NA, then 3" is probably too much. 2.5" is more than enough.
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11-01-09, 02:33 PM
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#9 (permalink)
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Forum Regular
Join Date: Oct 2009
Posts: 115
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1995 has the 1FZ-FE right? I'm still new. 
2.5" stock right?
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11-01-09, 02:59 PM
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#10 (permalink)
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Forum Regular
Join Date: May 2008
Location: loomis,CA
Posts: 206
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Quote:
Originally Posted by ShawnTRD
1995 has the 1FZ-FE right? I'm still new.
2.5" stock right? |
yes, you are correct...1FZ-  2.5 for exhaust
__________________
96' lx-450, factory E-lock, 2.5 OME, 285-75-16 cooper STT's, 7pin, CDL,.....
"Gods country is addicting, its easy to get hooked"
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11-05-09, 07:30 PM
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#11 (permalink)
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Forum Regular
Join Date: Feb 2005
Posts: 139
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Mine had the back of the muffler blow out last weekend on the highway on my way to a camping trip. The weld was rusted and not the back cap rattles like crazy. I ordered a Borla cat back and am going to put it on this weekend.
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john
96 FZJ80 lockers, OME J's w/ 30mm spacer up front, Bilstien 10" shocks, 315 Maxxis Buckshots, Safari Snorkel, ARB bullbar w/ T-max 10K winch 
95 T100 beater 175K and going strong
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Elbert
Katie
