Muffler water drain holes

[dom14]

Come to think of it, muffler is a box that usually sits bellow the exhaust pipe line. So, water can gather inside I reckon.
But, unless there's head gasket issue, once it's warmed up, the water should simply evaporate with the heat out of the exhaust end pipe.
Then again, most of the short runs we do, don't allow the muffler to get hot enough I reckon.
So, the water can gather inside.
What puzzles me though, it can't be that easy to create a weep hole into the muffler internal compartments without creating a exhaust soot
leak through the same hole. So, to me, it's kinda defeats the purpose.
My muffler has been going ok regardless of my welding filling of the "weep holes".
So, I reckon I did the right thing.
Yeah, it makes sense bike mufflers having weep holes 'cos they are upswept.
Then again, most car exhausts are down swept, and that's probably the reason I rarely see weep holes in car mufflers.

As Cuppa mentioned, it's look like I'm getting a good deal with this muffler anyway.
After repairing the muffler rust spotted leaks two years ago, it's still going. So, that's a bonus that I can't whinge about.

I reckon I should do the vacuum tester test of the intake straightaway and confirm there's no exhaust blockage or excess pressure.

Unless this particular muffler has a design to have that weep hole in order the balance the exhaust pressure as well, I should leave it alone.

Yeah, I think I'm gonna leave the muffler alone and give it another heat resistant silver paint spray to make it look new.

[moonie]

If your car is a turbo diesal just remove muffler altogether and put a hot dog whitch has no restitions or replace with pipe same size i took my mufflers off my GU 4.2 turbo spools up better an engine runs better i know of other people who have done the same and get better fuel as well//hope this helps.

[Robo]

If your car is a turbo diesal just remove muffler altogether and put a hot dog whitch has no restitions or replace with pipe same size i took my mufflers off my GU 4.2 turbo spools up better an engine runs better i know of other people who have done the same and get better fuel as well//hope this helps.

So how loud is it now without the muffler? near legal or not at all?.

[threedogs]

Start saving for a new free flowing muffler/hotdog whatever you want to call it.
Pointless trying to repair it unless funds are tight.
I good exhaust is better on your tune and fuel figures to.

[Robo]

The bits you touched up in the middle were spot construction welds.
You simply repaired them.
only holes are in/out either end etc for exh gasses.
otherwise exh fumes can make their way into cabin through the floor somewhere etc.
And not legal and certainly dangerous to ya health.
cheers

[Chimo]

I am also not an expert but I have weep holes in my Celica (1973) muffler and as result the muffler has not rusted out (muffler is at least 18 yrs old but honestly I cannot remember) as the water can drip out rather turn into concentrated acid over time and rust out the muffler.

On our Ford, as replace we mufflers all be it very infrequently, I always drill an 1/8 th or a bit bigger hole in the middle of the muffler down low as shown in one of the pics above. I feel sure its a good thing and worth doing, I sure would not block one up.

When we fitted the turbo to the GQ TD 4.2 Patrol we did not fit a muffler, just a muffler looking thing with a pipe straight thru as the turbo acts as a muffler and it was not needed. No hole in that one!!!

Cheers
Chimo

[Woof]

Just checked my new exhaust system that is sitting in my dining room and the muffler has no holes in it at all

[mudnut]

Just putting it out there
but I think that any vehicle
operated in Vic on
a Fire Ban day is required
to have 100% of
the exhaust gases to
exit the system via the
tail pipe.
If you have holes in the
muffler it would be unroadworthy
wouldn't it?

[Chimo]

Leaving a road while driving an unleaded petrol car should be illegal. Certainly stopping in a stubble paddock when in an unleaded petrol car can be exciting especially as the smell intensifies and should be illegal too. Maybe having holes so the moisture can drip out could counter the heat a very little too !

C
C

[Robo]

Leaving a road while driving an unleaded petrol car should be illegal. Certainly stopping in a stubble paddock when in an unleaded petrol car can be exciting especially as the smell intensifies and should be illegal too. Maybe having holes so the moisture can drip out could counter the heat a very little too !

C
C

So why then, apart from the obvious, are modern diesels fitted with catalytic converters!