Hustler's build thread 2.0, the natural aspiration connection - Page 6 - Miata Turbo Forum - Boost cars, acquire cats.

Welcome to Miataturbo.net   Members
 


Build Threads Building a motor? Post the progress here.

Reply
 
 
 
LinkBack Thread Tools Search this Thread
Old 08-29-2012, 12:21 PM   #101
Tour de Franzia
Thread Starter
iTrader: (6)
 
hustler's Avatar
 
Join Date: Jun 2006
Location: Republic of Dallas
Posts: 29,114
Total Cats: 351
Default

How much power am I giving up by going with an RB exhaust over something fancy? ARTech can do something for me soon, but I just don't have the time.
hustler is offline   Reply With Quote
Old 08-29-2012, 01:44 PM   #102
Cpt. Slow
iTrader: (25)
 
curly's Avatar
 
Join Date: Oct 2005
Location: Oregon City, OR
Posts: 12,110
Total Cats: 518
Default

Why won't the turbo exhaust work for now? Is it just too loud? I wonder if you could have Abe weld up a cat. But instead of a cat it's a small resonator to cut down the noise without the power sacrifice of a real converter. Also, you could reuse your turbo exhaust on your DD turbo'd car once you get something more permanent for the track car.

Just a thought. Although, you might not have time for that either.
curly is offline   Reply With Quote
Old 08-29-2012, 01:54 PM   #103
Senior Member
iTrader: (14)
 
Join Date: Jan 2007
Location: Murfreesboro,TN
Posts: 1,279
Total Cats: 53
Default

Quote:
Originally Posted by hustler View Post
How much power am I giving up by going with an RB exhaust over something fancy? ARTech can do something for me soon, but I just don't have the time.
I've got a 2.25" Enthuza I'll trade you for 3" stuff.
Midtenn is offline   Reply With Quote
Old 08-29-2012, 01:58 PM   #104
Supporting Vendor
iTrader: (3)
 
emilio700's Avatar
 
Join Date: May 2005
Posts: 5,326
Total Cats: 1,348
Default

Quote:
Originally Posted by hustler View Post
How much power am I giving up by going with an RB exhaust over something fancy? ARTech can do something for me soon, but I just don't have the time.
None. The RB makes power it's just heavy. The Enthuza trade from Midtenn isn't a bad idea.

FWIW, we just installed one of the new Borla race exhausts with optional rear muffler. Very quiet and nice tone. It's reasonably light but a bit too expensive for most. They have a kit for every year 90-05. We'll add it to the website. but I'm grinding on Borla to maybe lower the SRP a bit to bring it more inline with the other exhausts on the market.
emilio700 is offline   Reply With Quote
Old 08-29-2012, 02:24 PM   #105
Elite Member
iTrader: (7)
 
Join Date: Jan 2008
Location: Knoxville, TN
Posts: 2,121
Total Cats: 44
Default

A turbo muffler without turbo or cat..... 97.9dB. It isn't too pleasant and there's a loss of low-end tq lol.

No time to have a muffler shop do a quick fab of 2.25" piping to a resonator in place of the muffler? Should stay under 94dB with a high flow cat or another res. Should only weigh around 13lbs as well.
flier129 is online now   Reply With Quote
Old 08-29-2012, 02:41 PM   #106
Elite Member
iTrader: (11)
 
Join Date: Jun 2007
Location: Overland Park, Kansas
Posts: 5,382
Total Cats: 43
Default

Sub'd for awesome small penor N/A build!


Quote:
Originally Posted by owenwilliams View Post
Regarding water in the intake, I've heard extremely mixed views.
A number of s2ki.com forum members seem to have 'heard of a guy' who hydrolocked their engine. One member is sure that his CAI-equipped engine bogged and then blew after he splashed through a big puddle on the street. However, I've never encountered such horror stories anywhere else on the web, which makes me wonder if this hydrolock phenomenon is just an idiosyncrasy of this particular forum.
Another example: my friend once told me he was penalised during an intake design module of his motorsports engineering course for positioning the trial vehicle's air filter in an exposed position. So, edumacated people do not recommend it.
Not only do I personally know a guy who hydrolocked TWO engines in the same car, I was with him both times. Was a VERY low mounted behind bumper cone filter on a VR6 Jetta.



Quote:
Originally Posted by flier129 View Post
A turbo muffler without turbo or cat..... 97.9dB. It isn't too pleasant and there's a loss of low-end tq lol.

No time to have a muffler shop do a quick fab of 2.25" piping to a resonator in place of the muffler? Should stay under 94dB with a high flow cat or another res. Should only weigh around 13lbs as well.
Or does the turbo catback have accommodation for a cat? Replace the "test pipe" with a resonated pipe?
elesjuan is offline   Reply With Quote
Old 08-29-2012, 03:04 PM   #107
Elite Member
iTrader: (41)
 
Join Date: Jan 2006
Location: Seabrook, TX
Posts: 2,409
Total Cats: 19
Default

I had an Springfield Dyno exhaust on that motor and the people at HHR said it was too loud at 117dB, but I call BS because the person doing it stood only 20 ft behind it. They told me to floor it in neutral and with the light weight of the motor it quickly shot all the way up and got very loud very quickly. It scared the person with the meter enough that they ducked away.
rharris19 is online now   Reply With Quote
Old 08-29-2012, 05:10 PM   #108
Tour de Franzia
Thread Starter
iTrader: (6)
 
hustler's Avatar
 
Join Date: Jun 2006
Location: Republic of Dallas
Posts: 29,114
Total Cats: 351
Default

Well I have the intake but TDR did not have the RB rear section. Should I just order one|?
hustler is offline   Reply With Quote
Old 08-29-2012, 05:38 PM   #109
Supporting Vendor
iTrader: (3)
 
emilio700's Avatar
 
Join Date: May 2005
Posts: 5,326
Total Cats: 1,348
Default

Quote:
Originally Posted by rharris19 View Post
I had an Springfield Dyno exhaust on that motor and the people at HHR said it was too loud at 117dB, but I call BS because the person doing it stood only 20 ft behind it. They told me to floor it in neutral and with the light weight of the motor it quickly shot all the way up and got very loud very quickly. It scared the person with the meter enough that they ducked away.
Yup. The SD.exhaust is insanely loud. We measure 110db @ 50'
emilio700 is offline   Reply With Quote
Old 08-29-2012, 07:57 PM   #110
Junior Member
iTrader: (2)
 
Join Date: Apr 2010
Location: albion, mi
Posts: 304
Total Cats: 17
Default

Fwiw, I ran an rb header, no cat(straight pipe, mandrel bent), with a single 14" spiral flow resonator in place of my muffler for many years. Measured 92-93 db at every event. Sounded fantastic, not too loud in the cab, and cost me about 25$ from the local exhaust shop. I liked it so much that I keep three in my garage at all times, lol.
glade is offline   Reply With Quote
Old 08-29-2012, 08:28 PM   #111
Supporting Vendor
iTrader: (3)
 
emilio700's Avatar
 
Join Date: May 2005
Posts: 5,326
Total Cats: 1,348
Default

Quote:
Originally Posted by glade View Post
Fwiw, I ran an rb header, no cat(straight pipe, mandrel bent), with a single 14" spiral flow resonator in place of my muffler for many years. Measured 92-93 db at every event. Sounded fantastic, not too loud in the cab, and cost me about 25$ from the local exhaust shop. I liked it so much that I keep three in my garage at all times, lol.
I find that very difficult to believe unless you were measuring from way past 50' at a funny angle and not at WOT. For the rest of us, that's a 108db exhaust unless the resonator was partially collapsed or otherwise occluded.

For reference, a bone stock 49 state NB1 is about 92db.
emilio700 is offline   Reply With Quote
Old 08-29-2012, 09:35 PM   #112
Junior Member
iTrader: (3)
 
Join Date: Apr 2011
Location: Bay Area- East Bay
Posts: 290
Total Cats: 1
Default

Flowmaster hushpower muffler, great flow and sound. Mine, a 2.5" weighs 7lbs i think.
brainzata is offline   Reply With Quote
Old 08-29-2012, 10:00 PM   #113
Tour de Franzia
Thread Starter
iTrader: (6)
 
hustler's Avatar
 
Join Date: Jun 2006
Location: Republic of Dallas
Posts: 29,114
Total Cats: 351
Default

Quote:
Originally Posted by glade View Post
Fwiw, I ran an rb header, no cat(straight pipe, mandrel bent), with a single 14" spiral flow resonator in place of my muffler for many years. Measured 92-93 db at every event. Sounded fantastic, not too loud in the cab, and cost me about 25$ from the local exhaust shop. I liked it so much that I keep three in my garage at all times, lol.
Attached Thumbnails
Hustler's build thread 2.0, the natural aspiration connection-troll-detected-radar-45b7.gif  
hustler is offline   Reply With Quote
Old 08-29-2012, 10:49 PM   #114
Elite Member
iTrader: (7)
 
Join Date: Jan 2008
Location: Knoxville, TN
Posts: 2,121
Total Cats: 44
Default

Quote:
Originally Posted by hustler View Post
frsrsly

Jason at Enthuza says his XR light-weight puts NBs at 91-92 dB. So take out the cat and the mid-pipe muffler NBs have and you're well over 99dB....
flier129 is online now   Reply With Quote
Old 08-30-2012, 12:41 AM   #115
Junior Member
 
Join Date: Sep 2008
Location: Houston, TX
Posts: 102
Total Cats: 0
Default

trey if it's an emergency I'll loan you my 2.5" cat back...no res and a big magnaflow muffler. I'd need it back sometime in the next 6-8 weeks though
miata_racer is offline   Reply With Quote
Old 08-30-2012, 01:00 AM   #116
Tour de Franzia
Thread Starter
iTrader: (6)
 
hustler's Avatar
 
Join Date: Jun 2006
Location: Republic of Dallas
Posts: 29,114
Total Cats: 351
Default

This is with the 6 speed and 3.63, the gears are way to big, but the bitch is fast.

It revs fast too:
hustler is offline   Reply With Quote
Old 08-30-2012, 01:00 AM   #117
Tour de Franzia
Thread Starter
iTrader: (6)
 
hustler's Avatar
 
Join Date: Jun 2006
Location: Republic of Dallas
Posts: 29,114
Total Cats: 351
Default

Quote:
Originally Posted by miata_racer View Post
trey if it's an emergency I'll loan you my 2.5" cat back...no res and a big magnaflow muffler. I'd need it back sometime in the next 6-8 weeks though
I appreciate it man, but I got it covered. Thanks a bunch for the offer.
hustler is offline   Reply With Quote
Old 08-30-2012, 01:03 AM   #118
Tour de Franzia
Thread Starter
iTrader: (6)
 
hustler's Avatar
 
Join Date: Jun 2006
Location: Republic of Dallas
Posts: 29,114
Total Cats: 351
Default

Attached Thumbnails
Hustler's build thread 2.0, the natural aspiration connection-257711_10101086157433830_1173821759_o.jpg  
hustler is offline   Reply With Quote
Old 08-30-2012, 01:28 AM   #119
Senior Member
iTrader: (15)
 
Join Date: Oct 2006
Location: Las Cruces, NM
Posts: 1,404
Total Cats: 263
Default

Baller intake is baller.
99mx5 is offline   Reply With Quote
Old 08-30-2012, 01:33 AM   #120
Tour de Franzia
Thread Starter
iTrader: (6)
 
hustler's Avatar
 
Join Date: Jun 2006
Location: Republic of Dallas
Posts: 29,114
Total Cats: 351
Default

Which plugs should I run?
hustler is offline   Reply With Quote
Old 08-30-2012, 02:10 AM
hustler
This message has been deleted by hustler.
 
 
Reply

Related Topics
Thread Thread Starter Forum Replies Last Post
Project Gemini - Turbo Civic on the Cheap Full_Tilt_Boogie Build Threads 59 12-15-2017 09:00 PM
OTS Bilstein to motorsports ASN conversion stoves Suspension, Brakes, Drivetrain 5 04-21-2016 04:00 PM
WTB MP62 (Hotside) (NB2) Rick02R WTB 3 01-03-2016 08:18 PM
Leaky Wilwoods mx592 Suspension, Brakes, Drivetrain 1 10-01-2015 01:45 AM


Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off



All times are GMT -4. The time now is 11:05 AM.