Welding Rear Muffler - Choices

[TOM97C]

Hey guys,

 

Reasonably new to the forum and am working on my KE70. i have read posts and threads referring to exhausts but not many of them are that related to my situation. So a previous owner of the car has just cut off the rear muffler where the piping goes over the diff, comes back down and has been cut here just using like a grinder. If I'm do spend the money getting a new muffler what should i go?

 

It actually sounds really good without the rear muffler but don't know if i should go a straight through muffler or a cannon or some other type of muffler. Can someone shed some light for me please?

 

Cheers guys, Tom

[altezzaclub]

Depends on the Police in your area... I always use the tri-chamber mufflers, I reckon they give good flow without much resistance and while not as quiet as stock they aren't enough to get you stopped. The middle chamber is just ampty space, the ends full of fibreglass.

 

I have a 2" on the 4AGE and an inch & 1/2 on the 4K, and I reckon they are about the same. The 4AGE measured 85dB for engineering last week, enough for people to turn and look in the street sometimes.

 

Straight-throughs I can't stand, far too noisy outside and inside, but they are often real cheap and have thin walls. One thing I learnt in Altezzaclub was how expensive mufflers are heavy as they have have thick walls, or multilayers sometimes, so the noise doesn't go into the car boot and resonate through the body.

 

Grab a stock one off a big 6-cyl at the local wreckers and weld it on!

[KEI069]

^^^ I think you've got your info a bit mixed up.

 

Tri flows are empty at the ends and glass packed in the centre around the baffle tubes.

 

Straight through are the only sports muffler I ever use, on everything! It's a misconception they're too loud, it

All depends on muffler volume, the bigger it is the quieter it will be. All reputable brands are dual skinned

 

Canons are a different thing all together, most are cheap junk with little internal packing and thin walled stainless

Making them noisy and generally sound crap.

 

To the OP, if it sounds alright now with no muffler just weld a straight through resonator into the tailpipe, it should sound good

With little drone in the cabin.

[altezzaclub]

nah- I meant these ones, where the ends are f'glass packed with the engine side coming in through a drilled pipe & then aims straight for the solid rear wall of the middle chamber, where the sound pulses are meant to be absorbed.

 

The center is dead empty so the gases can easily go to the exit pipe on the other side, which is drilled through into the rear compartment's fibreglass.

 

I wish the manufacturers put more info out about their designs and how much they reduce noise with whatever restriction levels.