DIY Turbo Discussion greddy on a 1.8? homebrew kit?

resonator for 3'' exhaust

Thread Tools
 
Search this Thread
 
Old 06-30-2010, 09:46 PM
  #1  
Elite Member
Thread Starter
iTrader: (13)
 
falcon's Avatar
 
Join Date: Dec 2009
Posts: 2,499
Total Cats: 16
Default resonator for 3'' exhaust

I'm having someone make up a left exit cat back (or downpipe back) exhaust. Now due to size constraints and not having the cross over area at the back of a car to put a nice resonator/muffler, these seem to be my options.

What have others done for muffling a left exit while making it fit next to the transmission?

http://www.summitracing.com/parts/MPE-14419/

http://www.summitracing.com/parts/MPE-11219/

I drive the car on the street and the local track has a 96db limit and the AutoX pad has a 92db limit. I think it's going to be too loud for AutoX...
falcon is offline  
Old 06-30-2010, 09:47 PM
  #2  
VladiTuned
iTrader: (76)
 
18psi's Avatar
 
Join Date: Apr 2008
Posts: 35,821
Total Cats: 3,481
Default

both of those together would make for a decent sound.
18psi is offline  
Old 06-30-2010, 10:07 PM
  #3  
Elite Member
Thread Starter
iTrader: (13)
 
falcon's Avatar
 
Join Date: Dec 2009
Posts: 2,499
Total Cats: 16
Default

damn. didn't feel like spending money on two. if I just got one, I would assume to go with the larger?
falcon is offline  
Old 06-30-2010, 10:10 PM
  #4  
y8s
2 Props,3 Dildos,& 1 Cat
iTrader: (8)
 
y8s's Avatar
 
Join Date: Jun 2005
Location: Fake Virginia
Posts: 19,338
Total Cats: 573
Default

one of those is a muffler?

can you afford two of these?

http://www.summitracing.com/search/B...c&autoview=SKU
y8s is offline  
Old 06-30-2010, 10:15 PM
  #5  
Elite Member
Thread Starter
iTrader: (13)
 
falcon's Avatar
 
Join Date: Dec 2009
Posts: 2,499
Total Cats: 16
Default

I can afford anything, I'm just a cheap ****** who dosen't like spending my hard earned cash.

I can get two of those for sure. And it seems like that will have no problem clearing. Would you run them one right after the other or space them out a bit?
falcon is offline  
Old 06-30-2010, 10:15 PM
  #6  
Elite Member
Thread Starter
iTrader: (13)
 
falcon's Avatar
 
Join Date: Dec 2009
Posts: 2,499
Total Cats: 16
Default

what's the difference between all 3 of those? Just length?
falcon is offline  
Old 06-30-2010, 10:17 PM
  #7  
VladiTuned
iTrader: (76)
 
18psi's Avatar
 
Join Date: Apr 2008
Posts: 35,821
Total Cats: 3,481
Default

you go with one it will be fairly loud.
2 just right.
anything more (or bigger sizes of either) will also reduce sound quite well
18psi is offline  
Old 06-30-2010, 10:19 PM
  #8  
Tour de Franzia
iTrader: (6)
 
hustler's Avatar
 
Join Date: Jun 2006
Location: Republic of Dallas
Posts: 29,085
Total Cats: 375
Default

Ansa silverline is all you need.
hustler is offline  
Old 06-30-2010, 10:39 PM
  #9  
Elite Member
Thread Starter
iTrader: (13)
 
falcon's Avatar
 
Join Date: Dec 2009
Posts: 2,499
Total Cats: 16
Default

Originally Posted by 18psi
you go with one it will be fairly loud.
2 just right.
anything more (or bigger sizes of either) will also reduce sound quite well
Ok, now what about a single 16'' long Borla XR1 straight through?

http://www.summitracing.com/parts/BOR-40944/?rtype=10

I think what i may do is build it with one, and then if it's too loud I'll jut have a second added.
falcon is offline  
Old 06-30-2010, 10:45 PM
  #10  
VladiTuned
iTrader: (76)
 
18psi's Avatar
 
Join Date: Apr 2008
Posts: 35,821
Total Cats: 3,481
Default

"loud" is relative. one mans loud is anothers silent. for me I wanted something really deep but barely louder than the stock muffler. I got very close to that with a 26x8 magnaflow like brainey and many others are using. surprisingly I didn't even need a resonator.

Here is a clip (though its hard to tell from the shitty quality)




with a single like the one you posted it will be SIGNIFICANTLY louder.
you decide
18psi is offline  
Old 06-30-2010, 10:57 PM
  #11  
Elite Member
Thread Starter
iTrader: (13)
 
falcon's Avatar
 
Join Date: Dec 2009
Posts: 2,499
Total Cats: 16
Default

Lets just put it this way. No way in hell I'm running something as big and heavy as Brain's. It's a track car and I'm JUST trying to get past sound restrictions. That and not raspy is all I care about. It can be loud, just not raspy loud.

I also drive an FD RX7 with a straight through exhaust to an HKS super dragger exhaust... so I'm used to LOUD! ... lol
falcon is offline  
Old 06-30-2010, 10:59 PM
  #12  
Elite Member
Thread Starter
iTrader: (13)
 
falcon's Avatar
 
Join Date: Dec 2009
Posts: 2,499
Total Cats: 16
Default

ya, so neither of those you posted I would consider "loud"... louder than average... yes but not undrivable obnoxious loud. I think I'll give the XR1 a go. And if it's too loud I'll add a dynomax.
falcon is offline  
Old 07-01-2010, 12:16 AM
  #13  
VladiTuned
iTrader: (76)
 
18psi's Avatar
 
Join Date: Apr 2008
Posts: 35,821
Total Cats: 3,481
Default

Oh mine was not loud by any means. So if that is "quiet" for you then don't even bother with any resonators.
18psi is offline  
Old 07-01-2010, 12:50 AM
  #14  
Elite Member
iTrader: (8)
 
wayne_curr's Avatar
 
Join Date: Aug 2007
Location: Bellingham, Wa
Posts: 2,712
Total Cats: 4
Default

Can I convince you to just do a regular right exit? This setup sounds perfect to me and since we're the same age I think you'd like it too.

Name:  2009-09-05134404.jpg
Views: 296
Size:  110.7 KB
wayne_curr is offline  
Old 07-01-2010, 01:23 AM
  #15  
Junior Member
 
VanMSM's Avatar
 
Join Date: Dec 2006
Location: Vancouver, BC
Posts: 129
Total Cats: 6
Default

I have a new one of these sitting in the box in my garage if you want to buy it:
http://www.summitracing.com/parts/MPE-14419/

I also have a new 6" dia x 18 magnaflow muffler that I've decided not to use.

In addition, I have my old (yet practically new) Enthuza 3" NB turbo speeder with about 500-1000Km on it. Though you don't have an NB.

I seem to have accumulated a bit of a collection.

I ended up going with a gigantic Y8S approved 5x11x22 custom made 3" Enthuza. Jason did an excellent job.
VanMSM is offline  
Old 07-01-2010, 08:38 AM
  #16  
Junior Member
iTrader: (1)
 
uavjeep's Avatar
 
Join Date: Apr 2010
Location: On, Canada
Posts: 81
Total Cats: 1
Default

i run a 2.5" turbo back with a high flow cat NO muffler and i dd it no problems its still quieter than the pos civics with thier rice cans!!

Kris.
uavjeep is offline  
Old 07-01-2010, 08:54 AM
  #17  
Elite Member
iTrader: (5)
 
m2cupcar's Avatar
 
Join Date: Jan 2005
Location: Atlanta
Posts: 7,486
Total Cats: 372
Default

Originally Posted by falcon
No way in hell I'm running something as big and heavy as Brain's.
Those dynomax bullets that Y8s linked work great, are light and last. I've used them in both SM and IT Miata exhausts. Put that bullet where the cat would be and the run a down turn to the ground just after the driver's seat. That'll put the noise behind you and keep the exhaust very light.
m2cupcar is offline  
Related Topics
Thread
Thread Starter
Forum
Replies
Last Post
Full_Tilt_Boogie
Build Threads
84
04-12-2021 04:21 PM
StratoBlue1109
Miata parts for sale/trade
21
09-30-2018 01:09 PM
Corky Bell
Prefabbed Turbo Kits
18
11-22-2016 09:01 PM
Big_gumby
Meet and Greet
80
10-05-2015 04:06 PM
Goldwar
DIY Turbo Discussion
2
09-29-2015 09:20 AM



Quick Reply: resonator for 3'' exhaust



All times are GMT -4. The time now is 03:05 AM.