Another Muffler Thread

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ROOK1

Another Muffler Thread

Post by ROOK1 »

I am looking at mufflers and there are 35 round Magnaflow mufflers with a 2.25" inlet alone. They all have varying tip styles and tip lengths as well as muffler lengths. What is the proper size of the muffler? How do you know what to buy? How do you know what sounds good? Where do I start?

I have a stock 1600 with a long pipe header. I plan on replacing the full exhaust system from the header back. I have picked out a resonator but there are way too many choices in mufflers. Help!
AndyS
Posts: 328
Joined: Fri Jun 10, 2011 10:02 am
Your car is a: 1967 Fiat 124 Spider
Location: SF Bay Area

Re: Another Muffler Thread

Post by AndyS »

just don't get too big of a can or too big of a pipe size, or it will drone and you may even loose some performance. . people put these high flow V8 mufflers on small 4 banger engines, and the results usually are not that great. you do not need 2 1/4 pipe on a 1600 CC engine.
1967 Fiat 124 Spider
1964 Fiat Abarth 850TC conversion
1962 Abarth Allemano 1 liter Coupe
So Cal Mark

Re: Another Muffler Thread

Post by So Cal Mark »

I'd use 2" on a 1600. Most all perf muffs have a 2 1/4 inlet though
WYSpider

Re: Another Muffler Thread

Post by WYSpider »

I installed Auto Ricambi's stock end pipe with muffler and mid pipe with resonator on my 2L and it sounds great.
vandor
Posts: 3996
Joined: Sat May 23, 2009 1:23 pm
Your car is a: 1971 124 Spider
Location: Texas, USA

Re: Another Muffler Thread

Post by vandor »

The different sizes are mostly there so they fit different applications with different amount of space under the car.
In general the larger the muffler the more it quiets the exhaust. You also want a muffler you can see through for good flow.
As others said, there is no reason you'd need anything over 2".
Last edited by vandor on Thu Dec 15, 2011 9:36 pm, edited 1 time in total.
Csaba
'71 124 Spider, much modified
'17 124 Abarth, silver
http://italiancarclub.com/csaba/
Co-owner of the best dang Fiat parts place in town
ROOK1

Re: Another Muffler Thread

Post by ROOK1 »

So Cal Mark wrote:I'd use 2" on a 1600. Most all perf muffs have a 2 1/4 inlet though
This is what I am finding. This is why I was thinking 2.25'. How do I transition form 2' to 2.25" on the muffler? Should I find a center resonator with a 2" inlet? It seems that most of these are 2.25" as well.

Thanks for the help.
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124JOE
Posts: 3141
Joined: Fri Jun 24, 2011 7:11 pm
Your car is a: 1978 124 fiat spider sport 1800
Location: SO. WI

Re: Another Muffler Thread

Post by 124JOE »

costom muffler shops have a pipe strecher and expander you canh bring it to them amd have the fit it
then bring it home and install it
when you do everything correct people arent sure youve done anything at all (futurama)
ul1joe@yahoo.com 124joe@gmail.com
AndyS
Posts: 328
Joined: Fri Jun 10, 2011 10:02 am
Your car is a: 1967 Fiat 124 Spider
Location: SF Bay Area

Re: Another Muffler Thread

Post by AndyS »

there are plenty of excellent mufflers that run 2 inch in and outs on them.

these are fantastic mufflers from Hushpower. noise cancellation technology.

Image

http://www.jegs.com/i/Flowmaster/389/12018400/10002/-1

not a lot of room on the rear of a 124. this one might fit better. i run this on an old Alfa and love the sound. flows like a straight pipe.


http://www.jegs.com/i/Flowmaster/389/12012400/10002/-1
1967 Fiat 124 Spider
1964 Fiat Abarth 850TC conversion
1962 Abarth Allemano 1 liter Coupe
So Cal Mark

Re: Another Muffler Thread

Post by So Cal Mark »

I like the Hushpower, I was using those on the X1/9 system we build but the prices just went way too high. It does have a good sound. I've found a really good alternative to those $200 muffs that I'm using on our perf systems now.
ROOK1

Re: Another Muffler Thread

Post by ROOK1 »

I would be interested in seeing what you have. I have been to your site and all I can find are full exchaust systems. Guide me master Mark. :)
So Cal Mark

Re: Another Muffler Thread

Post by So Cal Mark »

I'll take some pics tomorrow when I'm in the shop so you can see what I'm using now. I don't normally sell just the muffs, that's why they aren't on my site

Here is one muff I'm using, the Insynerator Bullit muff. I have a twin tube muff that is more of a traditional sports car sound.
http://www.youtube.com/watch?v=VxWK4XvJ ... RznEG4m3oZ
ROOK1

Re: Another Muffler Thread

Post by ROOK1 »

That one sounds good. How much?
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thechadzone
Posts: 220
Joined: Sun Feb 03, 2008 3:31 pm
Your car is a: 1969 Fiat 124AS Spider
Location: Eugene, Oregon

Re: Another Muffler Thread

Post by thechadzone »

I was looking at this yesterday, looks like a fun tool:

http://www.harborfreight.com/medium-tai ... 37353.html
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boogiedude
Posts: 410
Joined: Mon Mar 02, 2009 5:22 am
Your car is a: 1978 spider 1800
Location: Honolulu, HI

Re: Another Muffler Thread

Post by boogiedude »

thechadzone wrote:I was looking at this yesterday, looks like a fun tool:

http://www.harborfreight.com/medium-tai ... 37353.html

You can ask Manoamatt about his experience with those from harbor freight. One time use lol
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124ADDHE
Posts: 365
Joined: Tue Oct 19, 2010 11:19 pm
Your car is a: 1974 Spider Amalgamation with C40 Solex
Location: Salmon Arm, BC, Canada

Re: Another Muffler Thread

Post by 124ADDHE »

http://www.summitracing.com/search/Bran ... SKU&RC=100

Thrush welded, 2 chamber muffs, sound good on my rover, probably would sound great on a spider. I run a 2.25 thrush glasspack, straight through unit, i like the sound, so do most people i have asked.
Regards,
Keith Cox
1973 124 Spider
1973 John Deere 500c backhoe
1987 Jaguar VDP
2013 passat tdi
2015 cherokee
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