DIY Turbo Discussion greddy on a 1.8? homebrew kit?
Sponsored by:
Sponsored by:

Nissan downpipe?

 
Old 04-19-2008, 01:08 PM
  #1  
Junior Member
Thread Starter
 
Join Date: Apr 2008
Posts: 349
Total Cats: -2
Default Nissan downpipe?

I'm a here but not to cars, turbos or the internet, and I searched already.

Has anyone made a Nissan downpipe (or one of the really cheap upgrades all over Ebay) for an SR20DET work with a bottom-mount manifold in a Miata with a T25/T28 turbine housing?

http://tinyurl.com/3gb8h9
http://tinyurl.com/3wnyqb

Combine it with the Ebay ripoff of the manifold Corky had built,

http://tinyurl.com/3ucf7t

and you could have one hell of a cheap x good factor.

If Bell sold the manifold as a stand-alone product, maybe I'd buy it, but IMO, the rest of his setup swings between ostentatiously overdone (downpipe, which also doesn't seem to allow the use of a cat, and I like breathing) to hack job. I wouldn't pay him for anything but the manifold, which, if his intercooler piping is anything to go by, he doesn't make in-house. But that's just speculation, I haven't visited his shop.

My basic proposal would look kinda like what these guys did:
http://tinyurl.com/3urvpc
and
http://tinyurl.com/3o3fqp
(The second one appears to be a different manifold, without the tab to reinforce the collector, for example.)

Obviously, there's a lot of hearsay about ebay stuff cracking. No direct input on either of the Bell ripoffs. The only first-hand report I found here was the Ghettocharged setup. From what I read in another thread earlier this morning, MarkP's SSautochrome manifold got fixed and is still going strong. Update?
SolarYellow510 is offline  
Old 04-19-2008, 01:27 PM
  #2  
:(
iTrader: (7)
 
Join Date: Jul 2006
Location: nowhere
Posts: 8,254
Total Cats: 2
Default

Mark gave up on his ghettocharger **** a while ago man. Over all if you are gonna try to do **** right go with qualitty products. Ebay **** does crack, and i would be afraid of the bottom mount turbo no hit block **** droping the turbo in the middle of the street as you drive it just doesnt even look as high quality as the megan **** i run but oh well if you wanna try it and report to us that is cool. Most here are not that adventrurous with there $$ though
magnamx-5 is offline  
Old 04-19-2008, 01:43 PM
  #3  
Junior Member
Thread Starter
 
Join Date: Apr 2008
Posts: 349
Total Cats: -2
Default

https://www.miataturbo.net/forum/showthread.php?t=13650

Start with post 6.

Oh, wait, you have the last post in that thread.

MarkP:
Experience, if you get this manifold be careful how you brace the wastegate. I broke mine but only because I was stupid. The steel was actually pretty thick wall. The wastegate mount is particularly sensitive to having weight suspended from it.
dvcn:
I have Markp's old manifold, I did a very poor weld on the crack that I didn't think was that bad. I ran it about 1,500 miles with no bracing. No cracking or anything falling off. I have since braced the turbo and external wastegate and still no problems.

After 3,500 miles (3 double driver autox's, a trip to the dragstrip and 3rd gear wheelspin every day) the cheap chinese ebay turbo(T3/T4), wastegate(38mm), bov(SSQV knockoff), intercooler, piping, silicone connectors AND the exhaust manifold are all functioning perfectly.
50k miles is more of a test, but still.
SolarYellow510 is offline  
Old 04-19-2008, 01:45 PM
  #4  
Junior Member
Thread Starter
 
Join Date: Apr 2008
Posts: 349
Total Cats: -2
Default

https://www.miataturbo.net/forum/showthread.php?t=12131

This is a great example of what I'm thinking about for turbo position. I'd actually rather have this manifold than the Ebay one. And the rest of it is pretty sweet, too. Mad props fo' the OCD and lack of cut corners.
SolarYellow510 is offline  
Old 04-19-2008, 01:57 PM
  #5  
Senior Member
iTrader: (2)
 
SamS's Avatar
 
Join Date: Jun 2006
Location: Wisconsin
Posts: 1,267
Total Cats: 7
Default

Originally Posted by SolarYellow510 View Post
If Bell sold the manifold as a stand-alone product, maybe I'd buy it, but IMO, the rest of his setup swings between ostentatiously overdone (downpipe, which also doesn't seem to allow the use of a cat, and I like breathing) to hack job. I wouldn't pay him for anything but the manifold, which, if his intercooler piping is anything to go by, he doesn't make in-house. But that's just speculation, I haven't visited his shop.
FWIW, BEGi will sell any and all of their parts separately, and all of their downpipes bolt up to a cat in the stock location.
SamS is offline  
Old 04-19-2008, 01:59 PM
  #6  
Junior Member
Thread Starter
 
Join Date: Apr 2008
Posts: 349
Total Cats: -2
Default

Guess I better pick up the phone, instead of relying on vendors' web sites.

I had forgotten how far back the cat is. It's been a while since I helped with a Miata turbo install. I've been living with a lot of close-coupled newer stuff the last few years. Just searched the Bell site, it doesn't say anywhere on there explicitly that anything bolts to a stock cat, just some talk about emissions legality for the more basic kits.

Guess I could have read more on the non-DIY forum, but what's the fun of that?

Last edited by SolarYellow510; 04-19-2008 at 02:18 PM.
SolarYellow510 is offline  
Old 04-19-2008, 02:10 PM
  #7  
Elite Member
iTrader: (24)
 
chriscar's Avatar
 
Join Date: Dec 2007
Location: Carrollton TX
Posts: 1,700
Total Cats: 13
Default

Originally Posted by SamS View Post
FWIW, BEGi will sell any and all of their parts separately
True

Originally Posted by SamS View Post
and all of their downpipes bolt up to a cat in the stock location.
True

C
chriscar is offline  
 
Related Topics
Thread
Thread Starter
Forum
Replies
Last Post
Full_Tilt_Boogie
Build Threads
67
03-16-2019 08:07 PM
StratoBlue1109
Miata parts for sale/trade
21
09-30-2018 01:09 PM
Goldwar
DIY Turbo Discussion
2
09-29-2015 09:20 AM
scratchedup
Engine Performance
2
09-13-2015 03:17 PM


Thread Tools
Search this Thread
Quick Reply: Nissan downpipe?


Archive - Advertising - Cookie Policy - Privacy Statement - Terms of Service

© 2019 MH Sub I, LLC dba Internet Brands

We are a participant in the Amazon Services LLC Associates Program, an affiliate advertising program designed to provide a means for us to earn fees by linking to Amazon.com and affiliated sites.