downpipe brace - Miata Turbo Forum - Boost cars, acquire cats.

Welcome to Miataturbo.net   Members
 


General Miata Chat A place to talk about anything Miata

Reply
 
 
 
LinkBack Thread Tools
Old 05-11-2007, 10:05 PM   #1
Elite Member
Thread Starter
iTrader: (5)
 
Atlanta93LE's Avatar
 
Join Date: Sep 2006
Location: Marietta, GA
Posts: 2,198
Total Cats: 1
Default downpipe brace

Any reason not to remove the stock downpipe (stock midpipe) brace bracket that attaches at the transmission? Looks like that piece is going to cause some rattling, so I'd like to remove it. Any problems in doing so?
Atlanta93LE is offline   Reply With Quote
Old 05-11-2007, 10:07 PM   #2
Lex
Junior Member
 
Join Date: Apr 2007
Posts: 181
Total Cats: 0
Default

yes, you are putting a lot of stress on your headers and attachment points to the head. That brace is there for a good reason and without it you can have cracked headers and other such unwanted problems.
Lex is offline   Reply With Quote
Old 05-11-2007, 10:18 PM   #3
Ben
Supporting Vendor
iTrader: (33)
 
Ben's Avatar
 
Join Date: Jul 2006
Location: atlanta-ish
Posts: 12,689
Total Cats: 99
Default

I'd say the opposite. The brace secures the DP in place causing stress to the dp and mani when the motor torques over. With the brace removed, the dp has the ability to jiggle around some.
Ben is offline   Reply With Quote
Old 05-11-2007, 10:22 PM   #4
Lex
Junior Member
 
Join Date: Apr 2007
Posts: 181
Total Cats: 0
Default

This is not correct, the motor and downpipe should be held together without any moving points between them and the vibration from the exhaust is absorbed by the flexpipe. Mazda wouldn't have designed it this way if it wasn't the case.
Lex is offline   Reply With Quote
Old 05-11-2007, 10:28 PM   #5
Ben
Supporting Vendor
iTrader: (33)
 
Ben's Avatar
 
Join Date: Jul 2006
Location: atlanta-ish
Posts: 12,689
Total Cats: 99
Default

1) I think those who have had their downpipe seperate itself from its bracket would disagree with you.

2) What flex pipe in the oem exhaust? I don't remember having one.

3) When did mazda design the maita exhaust to live up to a 230 rwhp turbocharged motor?
Ben is offline   Reply With Quote
Old 05-11-2007, 10:28 PM   #6
Elite Member
Thread Starter
iTrader: (5)
 
Atlanta93LE's Avatar
 
Join Date: Sep 2006
Location: Marietta, GA
Posts: 2,198
Total Cats: 1
Default

Lex, I don't have, and won't have, the stock midpipe on there. The bracket will NOT be attached to the new turbo downpipe. In fact, the downpipe brace has not been attached on my car since I've owned it...the hanger has rusted and fallen off long ago. Besides, who said anything about a flexpipe? The stock Miata sure never had one.

The turbo downpipe, though, will rattle against that old brace. I'm more curious if removing the bolts through the transmission housing to remove the brace bracket is fine for a minute.
Atlanta93LE is offline   Reply With Quote
Old 05-11-2007, 10:29 PM   #7
Elite Member
Thread Starter
iTrader: (5)
 
Atlanta93LE's Avatar
 
Join Date: Sep 2006
Location: Marietta, GA
Posts: 2,198
Total Cats: 1
Default

Looks like we're on the same page Ben.
Atlanta93LE is offline   Reply With Quote
Old 05-12-2007, 12:28 AM   #8
Lex
Junior Member
 
Join Date: Apr 2007
Posts: 181
Total Cats: 0
Default

ok, because the motor does not torque front to back there is no flexpipe ... but hard acceleration and stopping apply a lot of force to whatever is holding the exhaust in place. If all you have are rubber hangers and the attachment to the head, there is a lot of leverage on that attachment point ... in any case, I would still brace the exhaust somewhere after it is under the car if possible.
Lex is offline   Reply With Quote
Old 05-12-2007, 12:31 AM   #9
Boost Czar
iTrader: (61)
 
Braineack's Avatar
 
Join Date: May 2005
Location: Chantilly, VA
Posts: 72,872
Total Cats: 1,790
Default

cut it off.
Braineack is offline   Reply With Quote
Old 05-18-2007, 04:45 PM   #10
Senior Member
 
Join Date: Oct 2005
Location: Knoxville
Posts: 1,168
Total Cats: 0
Default

what do Begi and FM and turbo tony downpipes do? I had one put on my custom dp, but it makes an intensely annoying rattling noise unless it's perfectly tight, and I'd like to just pull the two trans bolts and take it off.
Al Hounos is offline   Reply With Quote
Old 05-18-2007, 04:50 PM   #11
Boost Czar
iTrader: (61)
 
Braineack's Avatar
 
Join Date: May 2005
Location: Chantilly, VA
Posts: 72,872
Total Cats: 1,790
Default

Quote:
Originally Posted by Al Hounos View Post
what do Begi and FM and turbo tony downpipes do?
no provisions for one...
Braineack is offline   Reply With Quote
Old 05-18-2007, 04:56 PM   #12
Senior Member
 
Join Date: Oct 2005
Location: Knoxville
Posts: 1,168
Total Cats: 0
Default

alright then that ****'s comin off.
Al Hounos is offline   Reply With Quote
Old 05-18-2007, 04:59 PM   #13
Elite Member
iTrader: (14)
 
Join Date: Mar 2006
Location: Edmonton, AB
Posts: 4,921
Total Cats: 0
Default

I'm having a **** of a time getting my Tony DP not to rattle.
jayc72 is offline   Reply With Quote
Old 05-18-2007, 06:05 PM   #14
AFM Crusader
iTrader: (18)
 
olderguy's Avatar
 
Join Date: Oct 2004
Location: Wayne, NJ
Posts: 4,438
Total Cats: 84
Default

Quote:
Originally Posted by Atlanta93LE View Post
I'm more curious if removing the bolts through the transmission housing to remove the brace bracket is fine for a minute.
There is no problem removing the bolts to remove the bracket if you re-torque them when you replace them.

That being said, I made a bracket to hold my RMDP to the transmission at that point so that I didn't have the weight hanging on the turbo.
olderguy is offline   Reply With Quote
Old 05-18-2007, 06:17 PM   #15
Elite Member
iTrader: (14)
 
Join Date: Mar 2006
Location: Edmonton, AB
Posts: 4,921
Total Cats: 0
Default

Quote:
Originally Posted by olderguy View Post
There is no problem removing the bolts to remove the bracket if you re-torque them when you replace them.

That being said, I made a bracket to hold my RMDP to the transmission at that point so that I didn't have the weight hanging on the turbo.

How long have you been running it like that Bruce? Details on what you fabricated?

Jay
jayc72 is offline   Reply With Quote
Old 05-18-2007, 06:42 PM   #16
AFM Crusader
iTrader: (18)
 
olderguy's Avatar
 
Join Date: Oct 2004
Location: Wayne, NJ
Posts: 4,438
Total Cats: 84
Default

38K

Just made an "L" bracket with a hole large enough for the tranny bolt and attached the "L" with a nut on the extended bolt thread. Standard muffler clamp (think it was 3 1/2") around downpipe and "L"
olderguy is offline   Reply With Quote
Old 05-18-2007, 06:52 PM   #17
Elite Member
iTrader: (3)
 
Join Date: Dec 2004
Location: Houston
Posts: 2,904
Total Cats: 4
Default

The RacingMazda DP was made on my old car. We did not use the stock bracket, and we used no flex pipe. The DP never gave me problems and is now living in AZ
Pitlab77 is offline   Reply With Quote
Old 05-18-2007, 10:38 PM   #18
Boost Pope
iTrader: (8)
 
Joe Perez's Avatar
 
Join Date: Sep 2005
Location: Delicious and Moist.
Posts: 26,323
Total Cats: 1,920
Default

Quote:
Originally Posted by jayc72 View Post
I'm having a **** of a time getting my Tony DP not to rattle.
So was I. https://www.miataturbo.net/forums/sh...36&postcount=7
Joe Perez is offline   Reply With Quote
Old 05-19-2007, 12:31 AM   #19
Senior Member
iTrader: (6)
 
nester's Avatar
 
Join Date: Sep 2005
Location: Houston, TX
Posts: 812
Total Cats: 0
Default

eff that bracket in the a-hole.. it came off, and the stock mid pipe met it's maker at the hands of my sawzall..
nester is offline   Reply With Quote
 
 
Reply

Related Topics
Thread Thread Starter Forum Replies Last Post
Project Gemini - Turbo Civic on the Cheap Full_Tilt_Boogie Build Threads 58 12-13-2017 10:04 PM
Back to Stock Part Out!! Turbo Parts, MS2 Enhanced 01-05, Suspension, and MOAR! StratoBlue1109 Miata parts for sale/trade 16 10-02-2015 10:39 AM
Miata new person and a what's it worth! Model192 Meet and Greet 16 09-29-2015 09:50 PM
1996 Turbo Build Goldwar DIY Turbo Discussion 2 09-29-2015 10:20 AM


Thread Tools

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 04:44 AM.