| Author |
Message |
Alex6373
Samba Member
Joined: August 05, 2007
Posts: 924
Location: Vancouver Island,B.C.
|
 Posted: Mon Jan 13, 2025 6:53 pm Post subject: 1979 muffler replacement |
 |
|
1979 muffler replacement……… well
I kinda don’t know what to do except try to get another gasket in the one two cylinder side to try to seal the flange !
|
|
| Back to top |
|
 |
Bruce
Samba Member
Joined: May 16, 2003
Posts: 17604
Location: Left coast, Canada
|
| Posted: Mon Jan 13, 2025 7:01 pm Post subject: Re: 1979 muffler replacement |
|
|
Before you condemn the muffler, check your flanges on your heaterboxes. See how the flange is thinner than the muffler's flange? That means it is more likely to be the one that will warp.
If it is warped, stacking up gaskets is not the solution. Getting it flat is.
_________________
| overheard at the portland Swap Meet... wrote: |
| ..... a steering wheel made from a mastadon tusk..... |
|
|
| Back to top |
|
|
Alex6373
Samba Member
Joined: August 05, 2007
Posts: 924
Location: Vancouver Island,B.C.
|
| Posted: Mon Jan 13, 2025 7:16 pm Post subject: Re: 1979 muffler replacement |
|
|
Thanks Bruce i agree but i think i will have to do some grinding to get that flat surface. |
|
| Back to top |
|
|
busdaddy
Samba Member
Joined: February 12, 2004
Posts: 52857
Location: Surrey B.C. Canada, but thinking of Ukraine
|
| Posted: Mon Jan 13, 2025 7:19 pm Post subject: Re: 1979 muffler replacement |
|
|
Do some hammering pre grinding, the morre you can bend back first the less you have to remove.
_________________
Rust NEVER sleeps and stock never goes out of style.
Please don't PM technical questions, ask your problem in public so everyone can play along. If you think it's too stupid post it here
Stop dead photo links! Post your photos to The Samba Gallery!
Слава Україні! |
|
| Back to top |
|
|
VW_Jimbo 
Samba Member
Joined: May 22, 2016
Posts: 11212
Location: Huntington Beach, CA
|
| Posted: Mon Jan 13, 2025 9:56 pm Post subject: Re: 1979 muffler replacement |
|
|
| busdaddy wrote: |
| Do some hammering pre grinding, the morre you can bend back first the less you have to remove. |
Tiny taps. A little bit at a time. Then use a mill file and file across the entire flange in full strokes until it is all shinny and flat.
Like on this video!
Link
_________________
Jimbo
There is never enough time to do it right the first time, but all the time necessary the second time!
| TDCTDI wrote: |
| Basically, a whole bunch of fuckery to achieve a look. |
| 67rustavenger wrote: |
GFY's Xevin and VW_Jimbo!  |
|
|
| Back to top |
|
|
goober
Samba Member
Joined: May 03, 2003
Posts: 1240
|
| Posted: Mon Jan 13, 2025 11:17 pm Post subject: Re: 1979 muffler replacement |
|
|
| Heat it and squeeze it with a couple large vice-grips. |
|
| Back to top |
|
|
vamram
Samba Member
Joined: March 08, 2012
Posts: 8054
Location: NOVA
|
| Posted: Tue Jan 14, 2025 7:39 am Post subject: Re: 1979 muffler replacement |
|
|
I had this problem w/a "new" (had never been installed) Thunderbird header on my '74. I had to take a couple of flat files to it and repeatedly test fit until it sat flush w/the 2 & 4 exhaust ports, confirmed it had sealed by doing the soap bubbles test, then finally by running it and seeing that the previous leak spots remained free of escaping exhaust residue.
3-4 side's leak pre-fix:
1-2 side header flange filed flat.
_________________
"Men are qualified for civil liberty in exact proportion to their disposition
to put moral chains upon their own appetites. -Edmund Burke
“If something cannot go on forever, it will stop.”
Stop Russian-Soviet Aggression!!
'74 Super 9/16 - present, in refurb process.
'73 Super - 6/18 - Present - Daily Driver!
'75 Super Le Grande...languishing since 2022.
Click to view image
Save the Supers!! |
|
| Back to top |
|
|
Alex6373
Samba Member
Joined: August 05, 2007
Posts: 924
Location: Vancouver Island,B.C.
|
| Posted: Tue Jan 14, 2025 8:52 am Post subject: Re: 1979 muffler replacement |
|
|
Thanks all for the suggestions!
I spent a hour last night removing it and using a large table mounted belt sander to bevel the flange .
The round exhaust pipe just tapped out with a ball peen hammer.
Still when reinstalling it i bolted this side up first and noted the 3&4 side was out about an inch , springing outward .
I guess laying a level across both port surfaces on the muffler , or laying both on a flat surface ( table saw ) will show which is bent .
I ran out of gas for torch will get the tanks replaced in am .
I think a little heat will solve it .
Of course i will be very careful using the torch and
Wear safety glasses .
As well i will have a fire extinguisher handy , just incase . |
|
| Back to top |
|
|
|
