DIY Turbo Discussion greddy on a 1.8? homebrew kit?

Need turbo manifold advice

Old 10-06-2012, 11:10 PM
  #1  
Bannisheded
Thread Starter
 
Turbo94MX5's Avatar
 
Join Date: Sep 2012
Posts: 54
Total Cats: -3
Default Need turbo manifold advice

Need some help with a turbo manifold looking for options on what I can get need something with a t3 top mount and at a 45* angle to the head like this. http://www.racingpartdepot.com/media...3a18b525_m.jpg
It's an OBX I know nothing about it. But its cheap which make me worried but I come from places where aftermarkets small. Reason for the replacement is bc the one on my car was home made and is quite simply put horrible. But I dynoed today made 155/158 to the wheels on a dyno jet so I'm decently happy but I know the mani is killing a lot of power.

Last edited by Turbo94MX5; 10-07-2012 at 11:09 AM.
Turbo94MX5 is offline  
Old 10-06-2012, 11:13 PM
  #2  
VladiTuned
iTrader: (76)
 
18psi's Avatar
 
Join Date: Apr 2008
Posts: 35,821
Total Cats: 3,481
Default

if you want a replica of that crappy OBX but with good quality you should hit up abe @ ARtech.
18psi is offline  
Old 10-06-2012, 11:15 PM
  #3  
Elite Member
 
flounder's Avatar
 
Join Date: Mar 2010
Location: Detroit
Posts: 1,524
Total Cats: 31
Default

flounder is offline  
Old 10-06-2012, 11:27 PM
  #4  
Bannisheded
Thread Starter
 
Turbo94MX5's Avatar
 
Join Date: Sep 2012
Posts: 54
Total Cats: -3
Default

I've done some searching but I'm not coming up with much I saw the sticky of the eBay mani which is why I'm staying away I've had the car for almost 2 weeks and found very little in way of the mani I need.
Turbo94MX5 is offline  
Old 10-07-2012, 02:32 AM
  #5  
Junior Member
 
mikeboldt's Avatar
 
Join Date: Jul 2011
Posts: 59
Total Cats: -4
Default

+1 for info on manis.

I don't really want to spend $900 on a tubular mani and I don't want to go log... Are there any solid affordable tubulars?
mikeboldt is offline  
Old 10-07-2012, 04:15 AM
  #6  
Elite Member
iTrader: (24)
 
viperormiata's Avatar
 
Join Date: Aug 2008
Location: Key West
Posts: 6,110
Total Cats: 283
Default

Originally Posted by mikeboldt
+1 for info on manis.

I don't really want to spend $900 on a tubular mani and I don't want to go log... Are there any solid affordable tubulars?

For tubular-Begi/ARtech/Absurdflow/Classifieds.

Gotta pay to play, boys.
viperormiata is offline  
Old 10-07-2012, 07:23 AM
  #7  
Senior Member
 
sturovo's Avatar
 
Join Date: Apr 2011
Location: Martin, Slovakia
Posts: 507
Total Cats: 74
Default

Hi Justin, I know all about
but I come from places where aftermarkets small
Where are you located?
Is remaking the manifold that is on your car an option? It might be possible to rehash it with weld els and tees?
The head and turbo flanges (usually hardest parts to get) might be reusable. Post some pictures?

Even if you don't weld, much of the work in making manifolds is pipe prep. Equiped with a 4.5 inch angle grinder and bench vice most people can manage to knock out the basic shape and then take it to a welder to finish.

But I dumped today made 155/158 to the wheels on a dump jet so I'm decently happy but I know the mani is killing a lot of power.
What size is your exhaust? My understanding is that a restrictive exhaust is more of a bottleneck than a log manifold.
sturovo is offline  
Old 10-07-2012, 11:20 AM
  #8  
Bannisheded
Thread Starter
 
Turbo94MX5's Avatar
 
Join Date: Sep 2012
Posts: 54
Total Cats: -3
Default

Well the Head flange is warped and I'm lucky I got it to seal, the turbo flange (t3) was drilled horribly for the bolts only three will line up the fourth bolt is off by 3/4 of its actual width also lucky I got that to seal, and finally the collector is terrible externally the welds are great but the collector welds are runny and just all around nasty then there is the fact that the individual runners don't have equal flow if you look at it the top runners going into the flange (1,4) have 1/3 of the flange opening and the runners are litterally squashed to fit, the other runners (2,3) have about 2/3 of the flange to flow and the runners are actually round.
Turbo94MX5 is offline  
Related Topics
Thread
Thread Starter
Forum
Replies
Last Post
StratoBlue1109
Miata parts for sale/trade
21
09-30-2018 01:09 PM
Rick02R
WTB
3
01-03-2016 07:18 PM
Aroundcorner
Miata parts for sale/trade
2
10-01-2015 03:20 PM
cale saurage
DIY Turbo Discussion
16
10-01-2015 11:25 AM


Thread Tools
Search this Thread
Quick Reply: Need turbo manifold advice



All times are GMT -4. The time now is 08:21 PM.