cracked ebay manifold - Miata Turbo Forum - Boost cars, acquire cats.

Welcome to Miataturbo.net   Members
 


DIY Turbo Discussion greddy on a 1.8? homebrew kit?

Reply
 
 
 
LinkBack Thread Tools
Old 07-05-2011, 01:27 AM   #1
Junior Member
Thread Starter
 
Join Date: Jul 2010
Posts: 89
Total Cats: 0
Default cracked ebay manifold

Yes I knew it was going to crack... but I thought I would get more than two weeks/500km out of the thing!

Not only has it cracked, but a bit has actually fallen right out, thankfully it didn't go through the turbine.

The turbo was supported with a steel brace/turnbuckle as well.

Spent the weekend building a schedule 40 mild steel steam pipe replacement. Since I can't weld very well it's not pretty but it got me home and time will tell if it will hold up. At least this one can be welded if it does crack.
Attached Thumbnails
cracked ebay manifold-crack.jpg   cracked ebay manifold-manifold.jpg   cracked ebay manifold-steampipe.jpg  
giblets is offline   Reply With Quote
Old 07-05-2011, 01:54 AM   #2
Murderator
iTrader: (76)
 
18psi's Avatar
 
Join Date: Apr 2008
Posts: 36,186
Total Cats: 2,582
Default

this thread should be stickied for all the dumb *** noobs that come in here every 5 minutes with a post like "I'm thinking of getting the ebay manifold, blah blah blah donkey *****, I KNOW IT WONT LAST LONG BUT PROBABLY GET ME BY A YEAR OR TWO"
18psi is offline   Reply With Quote
Old 07-05-2011, 02:04 AM   #3
Junior Member
Thread Starter
 
Join Date: Jul 2010
Posts: 89
Total Cats: 0
Default

Well, some of us just have to learn the hard way!

My only real regret is that it has dictated the position and orientation of the turbo.
giblets is offline   Reply With Quote
Old 07-05-2011, 02:19 AM   #4
Elite Member
iTrader: (10)
 
soviet's Avatar
 
Join Date: Jan 2010
Location: VA
Posts: 3,518
Total Cats: 257
Default

Quote:
Originally Posted by giblets View Post
My only real regret is that it has dictated the position and orientation of the turbo.
owned
soviet is offline   Reply With Quote
Old 07-05-2011, 02:21 AM   #5
Elite Member
iTrader: (6)
 
Join Date: Nov 2007
Location: Southlake,Texas
Posts: 3,251
Total Cats: 17
Default

Quote:
Originally Posted by giblets View Post
Well, some of us just have to learn the hard way!

My only real regret is that it has dictated the position and orientation of the turbo.
Why? Because of the downpipe?

That's going to crack next. Bet you 10 doll hairs.
Bond is offline   Reply With Quote
Old 07-05-2011, 02:46 AM   #6
Junior Member
Thread Starter
 
Join Date: Jul 2010
Posts: 89
Total Cats: 0
Default

yes because of the downpipe.

I would have put the turbo further forward and about an inch closer to the head If I were starting from scratch.

Anyway, I'm quite philosophic about it and it is after all just a toy. Figured some more photographic evidence of the pitfalls of ebay manifolds wouldn't go amiss.
giblets is offline   Reply With Quote
Old 07-05-2011, 03:17 AM   #7
Supporting Vendor
iTrader: (31)
 
Savington's Avatar
 
Join Date: Nov 2006
Location: Sunnyvale, CA
Posts: 14,363
Total Cats: 1,324
Default

Quote:
Originally Posted by 18psi View Post
this thread should be stickied for all the dumb *** noobs that come in here every 5 minutes with a post like "i'm thinking of getting the ebay manifold, blah blah blah donkey *****, i know it wont last long but probably get me by a year or two"
+1
Savington is online now   Reply With Quote
Old 07-05-2011, 07:59 AM   #8
Junior Member
iTrader: (6)
 
Join Date: Aug 2008
Location: New Zealand
Posts: 250
Total Cats: 3
Default

Makes me wonder how long my homemade one is going to last with 1.6mm mild steel. Anyone have an idea on minimum thickness these things should be???
ogwazza is offline   Reply With Quote
Old 07-05-2011, 08:25 AM   #9
Elite Member
iTrader: (12)
 
Join Date: Sep 2007
Location: Charlotte, NC
Posts: 6,868
Total Cats: 66
Default

...and people think that chinese steel is "good".
Doppelgänger is offline   Reply With Quote
Old 07-05-2011, 08:33 AM   #10
Senior Member
iTrader: (6)
 
Join Date: May 2009
Location: San Francisco
Posts: 989
Total Cats: 23
Default

Schedule 10 pipe is usually the thinnest used, sched 40 is usually the thickest
wittyworks is offline   Reply With Quote
Old 07-05-2011, 09:20 AM   #11
Elite Member
iTrader: (12)
 
GeneSplicer's Avatar
 
Join Date: Sep 2009
Location: Birmingham, AL
Posts: 2,006
Total Cats: 147
Default

Guess I was the rarity that my tacotaco cast lasted more than a year of hard track abuse - but yeah, it finally cracked and I slapped another taco on this spring - repeat stupidity cause the near future holds a 1.8 and likely an absurdflow manifold or one from my builder - if I ever get it together...
GeneSplicer is offline   Reply With Quote
Old 07-05-2011, 09:27 AM   #12
Boost Czar
iTrader: (61)
 
Braineack's Avatar
 
Join Date: May 2005
Location: Chantilly, VA
Posts: 72,867
Total Cats: 1,790
Default

Not pretty > broken.
Braineack is offline   Reply With Quote
Old 07-05-2011, 09:33 AM   #13
Elite Member
iTrader: (1)
 
Join Date: Jun 2006
Location: Warrington/Birmingham
Posts: 2,658
Total Cats: 39
Default

Quote:
Originally Posted by Doppelgänger View Post
...and people think that chinese steel is "good".
Chinese steel will be as good as you specify it.

M-Tuned rods are made in China are they not? They don't break because the metals specified are of the correct standard.

Just saying Chineese steel is **** is a gross simplification. If it did indeed suck, they wouldn't be able to build bridges that span 26+miles and have the worlds fastest growing economy etc etc.
richyvrlimited is offline   Reply With Quote
Old 07-05-2011, 10:36 AM   #14
I'm Miserable!
 
Join Date: Jun 2009
Location: albany, ga
Posts: 1,869
Total Cats: 3
Default

if you are running a 1.6 get one of these bitches if you are on a budget

http://cgi.ebay.com/ebaymotors/HIGH-...Q5fAccessories
Techsalvager is offline   Reply With Quote
Old 07-05-2011, 12:40 PM   #15
Elite Member
iTrader: (3)
 
Join Date: Feb 2008
Location: Huntsville, AL
Posts: 1,881
Total Cats: 45
Default

Got any pictures of everything in the car? I'm curious how your 'steel brace/turnbuckle' was loading the manifold.
vehicular is offline   Reply With Quote
Old 07-05-2011, 12:45 PM   #16
Junior Member
 
Join Date: Nov 2010
Location: NH
Posts: 60
Total Cats: -2
Default

Quote:
Originally Posted by vehicular View Post
Got any pictures of everything in the car? I'm curious how your 'steel brace/turnbuckle' was loading the manifold.
Me too.
jch13 is offline   Reply With Quote
Old 07-05-2011, 12:50 PM   #17
Senior Member
iTrader: (8)
 
Join Date: Sep 2010
Location: misery
Posts: 1,130
Total Cats: 9
Default

+1
good read
would read again
phillyb is offline   Reply With Quote
Old 07-05-2011, 02:18 PM   #18
Senior Member
iTrader: (3)
 
Join Date: May 2005
Location: Mass.
Posts: 816
Total Cats: 41
Default

Quote:
Originally Posted by richyvrlimited View Post
Chinese steel will be as good as you specify it.

M-Tuned rods are made in China are they not? They don't break because the metals specified are of the correct standard.

Just saying Chineese steel is **** is a gross simplification. If it did indeed suck, they wouldn't be able to build bridges that span 26+miles and have the worlds fastest growing economy etc etc.
All depends on how reputable the vendor/manufacturer is. Chinese manufacturers are NOTORIOUS for pulling the bait and switch which is why you often have to baby sit them like a devious 6 year old. Their willingness to cut corners is blatant and cultural.

This, of course, is a generalization. There are plenty of manufactures there who are very competent and hold very high standards - better then most U.S. manufacturers.

Using their economy as a justification for the quality of their steel is ridonkulous - especially when it's one as propped up as China's.

-Zach
thasac is offline   Reply With Quote
Old 07-05-2011, 02:20 PM   #19
Newb
 
Join Date: Apr 2011
Posts: 11
Total Cats: 0
Default

my ebay mani lasted me roughly 2 months, with a brace from DP to Engine. whatever... welcome to ebay
91escortgt is offline   Reply With Quote
Old 07-05-2011, 02:26 PM   #20
I'm Miserable!
 
Join Date: Jun 2009
Location: albany, ga
Posts: 1,869
Total Cats: 3
Default

Quote:
Originally Posted by 91escortgt View Post
my ebay mani lasted me roughly 2 months, with a brace from DP to Engine. whatever... welcome to ebay
cast iron?
my ebay cast iron has lasted over 6 months with no issues
Techsalvager 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 Yesterday 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
Moroso Air Oil Separator Catch Can Aroundcorner Miata parts for sale/trade 2 10-01-2015 04:20 PM
ISO 1.6 turbo cast iron manifold cale saurage DIY Turbo Discussion 16 10-01-2015 12:25 PM


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 01:27 PM.