RX7Club.com - Mazda RX7 Forum

Naturally Aspirated Performance Forum Discussion of naturally-aspirated rotary performance. No Power Adders, only pure rotary power! From the "12A" to the "RENESIS" and beyond.

Custom N/A exhaust for my turbo motor

Thread Tools
 
Search this Thread
 
Old 01-13-09, 04:55 PM
  #26  
Irregular Here

iTrader: (14)
 
7dust's Avatar
 
Join Date: Dec 2003
Location: Alvin, TX
Posts: 3,075
Likes: 0
Received 4 Likes on 4 Posts
^^^ Phil was demoted to Cheer Leader.
7dust is offline  
Reply Like
Old 01-13-09, 10:02 PM
  #27  
Rotary Freak

Thread Starter
iTrader: (4)
 
philiptompkins's Avatar
 
Join Date: Jan 2005
Location: Houston
Posts: 1,523
Likes: 0
Received 0 Likes on 0 Posts
Originally Posted by 7dust
^^^ Phil was demoted to Cheer Leader.
sorry scott, I should have warned you this was a 5 beer thread.
philiptompkins is offline  
Reply Like
Old 01-14-09, 08:59 AM
  #28  
Irregular Here

iTrader: (14)
 
7dust's Avatar
 
Join Date: Dec 2003
Location: Alvin, TX
Posts: 3,075
Likes: 0
Received 4 Likes on 4 Posts
^^^
7dust is offline  
Reply Like
Old 01-14-09, 09:17 AM
  #29  
Mother****ing Wow
 
sunburn's Avatar
 
Join Date: Jul 2008
Location: NJ
Posts: 1,290
Likes: 0
Received 0 Likes on 0 Posts
SO did you make more power on the dyno?
sunburn is offline  
Reply Like
Old 01-14-09, 11:38 AM
  #30  
Rotary Freak

Thread Starter
iTrader: (4)
 
philiptompkins's Avatar
 
Join Date: Jan 2005
Location: Houston
Posts: 1,523
Likes: 0
Received 0 Likes on 0 Posts
Originally Posted by sunburn
SO did you make more power on the dyno?
nope, and honestly I won't waste my money on that with this setup. I did dyno the car once before but it had a differant motor and a turbo, so even if I did dyno it I wouldn't have anything to compare it to.
It "pulls hard" though.
philiptompkins is offline  
Reply Like
Old 01-14-09, 11:48 AM
  #31  
Collections Hold
iTrader: (5)
 
GtoRx7's Avatar
 
Join Date: Mar 2003
Location: Pataskala, Ohio
Posts: 1,987
Likes: 0
Received 3 Likes on 3 Posts
Is a group buy in the future? That should hold up for a while though!
GtoRx7 is offline  
Reply Like
Old 01-14-09, 11:50 AM
  #32  
Mother****ing Wow
 
sunburn's Avatar
 
Join Date: Jul 2008
Location: NJ
Posts: 1,290
Likes: 0
Received 0 Likes on 0 Posts
Originally Posted by philiptompkins
nope, and honestly I won't waste my money on that with this setup. I did dyno the car once before but it had a differant motor and a turbo, so even if I did dyno it I wouldn't have anything to compare it to.
It "pulls hard" though.
I was kidding... I'm 1000% sure you lost power and could not afford dyno time.
sunburn is offline  
Reply Like
Old 01-14-09, 12:57 PM
  #33  
Senior Member

 
andrewb70's Avatar
 
Join Date: May 2003
Location: WI
Posts: 343
Likes: 0
Received 0 Likes on 0 Posts
Next time get mild steel pipe from McMaster Carr.

Andrew
andrewb70 is offline  
Reply Like
Old 01-14-09, 03:41 PM
  #34  
Rotary Enthusiast

 
LT1RX7's Avatar
 
Join Date: Jul 2002
Location: North Carolina
Posts: 863
Likes: 0
Received 0 Likes on 0 Posts
Originally Posted by PDViper77
Wow, that is one of the most ghetto pieces that I have seen in awhile....
Good sir that is an insult to ghetto pieces! I would classify it as........a ******* trainwreck.
LT1RX7 is offline  
Reply Like
Old 01-14-09, 04:09 PM
  #35  
Rotors still spinning

iTrader: (1)
 
rotarygod's Avatar
 
Join Date: Jul 2002
Location: Houston
Posts: 4,181
Likes: 0
Received 20 Likes on 14 Posts
If Phil can make 220 hp with 22 lbs of boost, I wonder how little he can make with no boost!
rotarygod is offline  
Reply Like
Old 01-14-09, 05:03 PM
  #36  
Administrator

 
DrKillJoY's Avatar
 
Join Date: Apr 2002
Location: Houston, Texas
Posts: 8,634
Received 5 Likes on 3 Posts
A couple of pics from the club meeting.. FWIW - I think it is quieter now than it was before.






DrKillJoY is offline  
Reply Like
Old 01-14-09, 05:26 PM
  #37  
mad scientist

 
mazdaspeed7's Avatar
 
Join Date: Feb 2001
Location: Savannah, GA
Posts: 2,665
Likes: 0
Received 2 Likes on 2 Posts
I cant believe you are proud enough of that to show pics on a car forum...
mazdaspeed7 is offline  
Reply Like
Old 01-14-09, 05:30 PM
  #38  
Administrator

 
DrKillJoY's Avatar
 
Join Date: Apr 2002
Location: Houston, Texas
Posts: 8,634
Received 5 Likes on 3 Posts
For the record. It's not mine.

In other news I think we've pretty much established that Phil doesn't give a F**K about what people think.
DrKillJoY is offline  
Reply Like
Old 01-14-09, 05:44 PM
  #39  
Irregular Here

iTrader: (14)
 
7dust's Avatar
 
Join Date: Dec 2003
Location: Alvin, TX
Posts: 3,075
Likes: 0
Received 4 Likes on 4 Posts







7dust is offline  
Reply Like
Old 01-14-09, 09:32 PM
  #40  
Full Member

 
EpitrochoidalPower!'s Avatar
 
Join Date: Jul 2007
Location: South Africa
Posts: 234
Likes: 0
Received 0 Likes on 0 Posts


FWIW i made this for about 35$ i know its no masterpiece, bare in mind it wasnt completed or cleaned up yet in that photo, but the lengths are equal and i used mandrel bends...

EpitrochoidalPower! is offline  
Reply Like
Old 01-15-09, 12:25 PM
  #41  
Old [Sch|F]ool

 
peejay's Avatar
 
Join Date: May 2001
Location: Cleveland, Ohio, USA
Posts: 12,540
Received 426 Likes on 305 Posts


Just trying to give you ideas for when you go back to turbo
peejay is offline  
Reply Like
Old 01-15-09, 01:57 PM
  #42  
Rotary Freak

iTrader: (7)
 
Shainiac's Avatar
 
Join Date: Jun 2006
Location: Lyme, CT
Posts: 1,578
Received 44 Likes on 33 Posts
^Is that cast iron? If that doesnt leak, Im impressed.
Shainiac is offline  
Reply Like
Old 01-15-09, 03:34 PM
  #43  
Collections Hold
iTrader: (5)
 
GtoRx7's Avatar
 
Join Date: Mar 2003
Location: Pataskala, Ohio
Posts: 1,987
Likes: 0
Received 3 Likes on 3 Posts
Originally Posted by peejay

Just trying to give you ideas for when you go back to turbo
Good lord! I dont think even a scrap yard would take that!!!
GtoRx7 is offline  
Reply Like
Old 01-15-09, 03:55 PM
  #44  
Senior Member

iTrader: (2)
 
TurboIILover's Avatar
 
Join Date: Sep 2007
Location: El Monte
Posts: 326
Likes: 0
Received 0 Likes on 0 Posts
Originally Posted by peejay


Just trying to give you ideas for when you go back to turbo
wow wee waa waa
TurboIILover is offline  
Reply Like
Old 01-17-09, 12:31 PM
  #45  
Rotary Freak

Thread Starter
iTrader: (4)
 
philiptompkins's Avatar
 
Join Date: Jan 2005
Location: Houston
Posts: 1,523
Likes: 0
Received 0 Likes on 0 Posts
Just to throw things into perspective for you guys, this is my LAST manifold:
philiptompkins is offline  
Reply Like
Old 01-17-09, 12:36 PM
  #46  
Rotary Freak

Thread Starter
iTrader: (4)
 
philiptompkins's Avatar
 
Join Date: Jan 2005
Location: Houston
Posts: 1,523
Likes: 0
Received 0 Likes on 0 Posts
Originally Posted by EpitrochoidalPower!


FWIW i made this for about 35$ i know its no masterpiece, bare in mind it wasnt completed or cleaned up yet in that photo, but the lengths are equal and i used mandrel bends...

well....
1. I don't know where to get that much mandrel bent pipe for $35
2. my last manifold (pictured above) was made of mandrel bent exhaust pipe and it only lasted a year.
philiptompkins is offline  
Reply Like
Old 01-17-09, 12:46 PM
  #47  
Junior Member
 
cantaffordit's Avatar
 
Join Date: Jan 2009
Location: calgary
Posts: 43
Likes: 0
Received 0 Likes on 0 Posts
wow, thats quite the piece. That pipe wont last very long dude. Atleats use schedule 40 black iron water pipe. You can get it in angles 22.5 45 and 90 and it has beveled edges already for welding since thats what its made for. Veyr inexpensive.
cantaffordit is offline  
Reply Like
Old 01-20-09, 12:43 PM
  #48  
Rotary Enthusiast

 
LT1RX7's Avatar
 
Join Date: Jul 2002
Location: North Carolina
Posts: 863
Likes: 0
Received 0 Likes on 0 Posts
Or at least learn how to use a welder for God's sake
LT1RX7 is offline  
Reply Like
Old 01-26-09, 02:58 PM
  #49  
Ductape ****** fabricator

 
Join Date: Aug 2003
Location: San Diego
Posts: 186
Likes: 0
Received 0 Likes on 0 Posts
Jesus.

You do realize there is a lot more to fluid dynamics than "length" and... well I think that's the only consideration you thought of.

1st, those threaded couplings will generate a hell of a lot of turbulent flow. The 90 degree elbow there will mess up the flow velocity as well.
2nd, someone already mentioned this, but I don't think that steel is rated for the temps you will be seeing. It will probably start corroding after a couple months and break the welds.

By the way, I'm a mechanical engineer and I do not approve this in principle or execution.
meatishtapehelmet is offline  
Reply Like
Old 01-26-09, 03:29 PM
  #50  
Rotors still spinning

iTrader: (1)
 
rotarygod's Avatar
 
Join Date: Jul 2002
Location: Houston
Posts: 4,181
Likes: 0
Received 20 Likes on 14 Posts
Phil, at some point you're finally going to realize that taking the time and spending the money to do something properly once is ultimately cheaper and faster than building improper setups over and over again.
rotarygod is offline  
Reply Like



Advanced Search
Quick Reply: Custom N/A exhaust for my turbo motor


Reply Closed Thread Share

All times are GMT -5. The time now is 03:11 PM.