Quiet Cold Starts

[msweet]

Hello people, looking for opinions.

I love my exhaust, but I'm moving into an apartment in less than 3 weeks time. I will have an underground car space below the building, but anyone who's heard the Corsa Xtreme will know that cold starts can wake small nations.

My idea is a couple of soundproof boxes set up behind the tailpipes, with as much sound deadener as possible (cheaper version of dynamat maybe) - basically contain and muffle the sound. If I can dial the volume down by 30% I will be happy.

Anyone have any experience soundproofing things? Is it going to be a pointless exercise?

Flame suit on.

Sponsored

 

[IngoStang]

I got a stock exhaust you can have

You're gonna have a hard time keeping it quiet I think but I wish you luck.

Rather than a flame suit, Go for Kevlar as I think your neighbours will be waiting with pitch forks in no time lol

 

[msweet]

lol I've got one too, but thanks for the offer. Well it's been on for four months and not a single complaint, which is a good sign. I've got two weekends for creativity, that should be enough haha

 

[IngoStang]

Maybe just line the walls with foam rubber? Not sure of the cost though or whether Strata would let you go down that road

 

[msweet]

Maybe just line the walls with foam rubber? Not sure of the cost though or whether Strata would let you go down that road

Yeah that's why I was thinking to try and contain it within a box lined with foam rubber. I mean it'll probably cost me $200 to rig it up, but cheaper than switching exhausts

Plus I really don't want to switch exhausts haha

 

[ryosaeba]

Push it out of the complex before starting the engine!

But seriously it's good to see people showing courtesy towards others without being prompted to.

 

[Egghead]

Hello people, looking for opinions.

I love my exhaust, but I'm moving into an apartment in less than 3 weeks time. I will have an underground car space below the building, but anyone who's heard the Corsa Xtreme will know that cold starts can wake small nations.

My idea is a couple of soundproof boxes set up behind the tailpipes, with as much sound deadener as possible (cheaper version of dynamat maybe) - basically contain and muffle the sound. If I can dial the volume down by 30% I will be happy.

Anyone have any experience soundproofing things? Is it going to be a pointless exercise?

Flame suit on.

Your gunna havta leave her at your mums place , because every time I start my girl I break out laughing as to how loud she is . Good luck mate

 

[Burkey]

Could you reverse engineer this?

 

[msweet]

That's another theory that could come into play lol

 

[msweet]

Google helped a bit ! lmao

But yeah, when I have to leave early (thankfully its not very often) im pretty sure I wake everyone and everything in the area up..... bit i like it

Dammit, I thought that was actually going to be helpful haha

Don't get me wrong, I like the cold starts, but it's gotta be 90dB+ so it's the neighbours I have to worry about.

Edit: that was helpful! Thanks haha, good diagram

 

[MustangDownUnder]

Google helped a bit ! lmao

But yeah, when I have to leave early (thankfully its not very often) im pretty sure I wake everyone and everything in the area up..... bit i like it





Ok Ok jokes aside,,...... I think you are on the right track with the sound deadening/foam of some sort lined box.

I found these pics which could help. They are designed for generators. No doubt with some modification you could build something to suit your needs. I think the key is to maximize the surface area within the box and allow somewhere for the exhaust to exit while increasing the amount of sound deadening material chosen. (something not flammable...... some sound deadening is....)

And another one, It looks like, changing the direction of air/exhaust/noise flow a couple times is a key point.

Edit: sorry it was getting messy, I was adding to the post, here it is again

 

[Aus-MustangGT]

You should just ask Yuvraj :lol:

 

[Burkey]

You should just ask Yuvraj :lol:

Too soon mate, too soon.

 

[Kaps]

Can try modifying the mufflers removed from someone's GT who has installed AB exhausts. You only need them for cold start. They will be heavy though.
You may also try a local muffler shop, they might be able to build you a functional solution (cheaper or same cost as your budget) or may give you some idea.

 

[msweet]

Can try modifying the mufflers removed from someone's GT who has installed AB exhausts. You only need them for cold start. They will be heavy though.
You may also try a local muffler shop, they might be able to build you a functional solution (cheaper or same cost as your budget) or may give you some idea.

Using the stock muffler somehow could be a good idea (still got it lying around), I've actually got the mufflers off my VE which are even quieter than the stang haha. Could just be an extension of the pipe routing through the quieter muffler, would struggle to get an airtight seal though

Sponsored