Are these for real? Donut mandrel bends - Miata Turbo Forum - Boost cars, acquire cats.

Welcome to Miataturbo.net   Members
 


Insert BS here A place to discuss anything you want

Reply
 
 
 
LinkBack Thread Tools Search this Thread
Old 09-17-2007, 12:09 PM   #1
Elite Member
Thread Starter
iTrader: (9)
 
TurboTim's Avatar
 
Join Date: Jun 2006
Location: Chesterfield, NJ
Posts: 6,479
Total Cats: 248
Default Are these for real? Donut mandrel bends

TurboTim is offline   Reply With Quote
Old 09-17-2007, 12:12 PM   #2
Elite Member
iTrader: (13)
 
cjernigan's Avatar
 
Join Date: Oct 2006
Location: Atlanta, GA
Posts: 8,147
Total Cats: 6
Default

I've seen them used for real tight radius's, a guy on the forum actually had one sitting in his garage when he said he was going to be building his own exhaust.
cjernigan is offline   Reply With Quote
Old 09-17-2007, 12:13 PM   #3
Elite Member
iTrader: (39)
 
Zabac's Avatar
 
Join Date: Sep 2007
Location: High Point NC
Posts: 4,854
Total Cats: 8
Default

those are nice for buildung mani's...
Zabac is offline   Reply With Quote
Old 09-17-2007, 12:14 PM   #4
Elite Member
iTrader: (6)
 
Loki047's Avatar
 
Join Date: Sep 2005
Location: Chicago
Posts: 4,145
Total Cats: 0
Default

allows you to weird bends that arent made
Loki047 is offline   Reply With Quote
Old 09-17-2007, 12:17 PM   #5
Ben
Supporting Vendor
iTrader: (33)
 
Ben's Avatar
 
Join Date: Jul 2006
Location: atlanta-ish
Posts: 12,689
Total Cats: 99
Default

Yes, that's how you make these:






Ben is offline   Reply With Quote
Old 09-17-2007, 12:22 PM   #6
Senior Member
iTrader: (6)
 
nester's Avatar
 
Join Date: Sep 2005
Location: Houston, TX
Posts: 812
Total Cats: 0
Default

Yes, they are a welded seam type deal. We used them on our DP's for Scion's.
nester is offline   Reply With Quote
Old 09-17-2007, 12:30 PM   #7
Junior Member
iTrader: (6)
 
Join Date: Jan 2006
Location: St Johns, Fl
Posts: 378
Total Cats: 0
Default

My buddy bought some and used them to fab up a tight bending turbo intake pipe. I'll see if I can find some pics somewhere because it looked niiice..
clay is offline   Reply With Quote
Old 09-17-2007, 12:40 PM   #8
Elite Member
iTrader: (39)
 
Zabac's Avatar
 
Join Date: Sep 2007
Location: High Point NC
Posts: 4,854
Total Cats: 8
Default

its too expensive there, plumbng suppliers have them for cheaper i think...i can get those made from a friend also, not sure how much, but not nearly what they want...
Zabac is offline   Reply With Quote
Old 09-17-2007, 12:41 PM   #9
Elite Member
iTrader: (6)
 
Loki047's Avatar
 
Join Date: Sep 2005
Location: Chicago
Posts: 4,145
Total Cats: 0
Default

jc whitney has em too
Loki047 is offline   Reply With Quote
Old 09-17-2007, 12:44 PM   #10
Junior Member
iTrader: (1)
 
Join Date: Sep 2006
Posts: 464
Total Cats: 0
Default

Are they stamped and welded?
PAT! is offline   Reply With Quote
Old 09-17-2007, 12:47 PM   #11
Elite Member
iTrader: (6)
 
Loki047's Avatar
 
Join Date: Sep 2005
Location: Chicago
Posts: 4,145
Total Cats: 0
Default

ive only seen stamped, but those look like tha they have a seam.
Loki047 is offline   Reply With Quote
Old 09-17-2007, 01:02 PM   #12
y8s
2 Props,3 Dildos,& 1 Cat
iTrader: (8)
 
y8s's Avatar
 
Join Date: Jun 2005
Location: Fake Virginia
Posts: 19,037
Total Cats: 406
Default

road/race sells them too. I think they're like seven hundred dollars.
y8s is online now   Reply With Quote
Old 09-17-2007, 02:03 PM   #13
Elite Member
Thread Starter
iTrader: (9)
 
TurboTim's Avatar
 
Join Date: Jun 2006
Location: Chesterfield, NJ
Posts: 6,479
Total Cats: 248
Default

I wanna know how they are actually manufactured.
TurboTim is offline   Reply With Quote
Old 09-17-2007, 02:04 PM   #14
Ben
Supporting Vendor
iTrader: (33)
 
Ben's Avatar
 
Join Date: Jul 2006
Location: atlanta-ish
Posts: 12,689
Total Cats: 99
Default

I would think halves are stamped and welded. I'm too stupid to figure out any other way.
Ben is offline   Reply With Quote
Old 09-17-2007, 02:25 PM   #15
y8s
2 Props,3 Dildos,& 1 Cat
iTrader: (8)
 
y8s's Avatar
 
Join Date: Jun 2005
Location: Fake Virginia
Posts: 19,037
Total Cats: 406
Default

pretty sure they're formed cake-tins and welded halves.

y8s is online now   Reply With Quote
Old 09-17-2007, 02:31 PM   #16
Elite Member
iTrader: (13)
 
cjernigan's Avatar
 
Join Date: Oct 2006
Location: Atlanta, GA
Posts: 8,147
Total Cats: 6
Default

The inner seams have to be finish welded when you cut it apart as well. Only the outside seam is completed.
cjernigan is offline   Reply With Quote
Old 09-17-2007, 03:25 PM   #17
Elite Member
iTrader: (3)
 
Join Date: May 2006
Location: Houston, TX
Posts: 2,900
Total Cats: 0
Default

I've seen them hydro-formed from flat plate and then welded on the OD seam. The ID has no seam on the hydro-formed units.
Arkmage is offline   Reply With Quote
Old 09-17-2007, 04:06 PM   #18
Elite Member
Thread Starter
iTrader: (9)
 
TurboTim's Avatar
 
Join Date: Jun 2006
Location: Chesterfield, NJ
Posts: 6,479
Total Cats: 248
Default

Ahh ok, thanks. That makes sense. For tight radii I've been using ATP's tight radius 90's and 120's. This is another interesting option.
TurboTim is offline   Reply With Quote
Old 09-18-2007, 12:54 AM   #19
Senior Member
 
Join Date: Mar 2006
Posts: 1,379
Total Cats: 1
Default

Quote:
Originally Posted by TurboTim View Post
Yes they work awesome but they have an inside seam that needs to be welded.
Markp is offline   Reply With Quote
Old 09-18-2007, 09:24 AM   #20
Elite Member
Thread Starter
iTrader: (9)
 
TurboTim's Avatar
 
Join Date: Jun 2006
Location: Chesterfield, NJ
Posts: 6,479
Total Cats: 248
Default

Now links to less expensive versions. I know you have them!
TurboTim 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 57 07-19-2017 05:11 PM
Toyota Pickup Engine Swap B.S. Monk Build Threads 24 12-11-2016 03:21 PM
Another Cast Manifold Corky Bell Prefabbed Turbo Kits 18 11-22-2016 10:01 PM
Need ideas mounting IWG actuator JasonC SBB DIY Turbo Discussion 7 09-23-2015 08:25 PM
ME221 Now has Autotune and Long Term Fuel Trim Tables Motorsport-Electronics ECUs and Tuning 0 09-05-2015 09:02 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 11:25 AM.