Compressor Flange Types - 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 03-27-2010, 07:19 PM   #1
Newb
Thread Starter
iTrader: (1)
 
Join Date: Feb 2009
Posts: 23
Total Cats: 0
Default Compressor Flange Types

I've been wondering for a very long time...what's the technical term for the 2 and 3 bolt flanges that are on the inlet and outlet of some compressor housings?

I've seen identical turbos with those flanges and with the machined tube fittings, yet I don't think I've ever seen any options to choose between the two when purchasing a turbo.
CorsaGT is offline   Reply With Quote
Old 03-27-2010, 11:20 PM   #2
Senior Member
iTrader: (4)
 
Join Date: Jan 2008
Location: Falls Church, VA
Posts: 1,367
Total Cats: 16
Default

I haven't ever seen them called anything other than a 2-bolt inlet or a 3-bolt outlet. If you see a turbo advertised as a direct drop-in upgrade for a Nissan OEM turbo, that usually means it will have those flanges. Garrett sells a bunch of different 2871 turbos and you can get them with either that pattern or the bare slip-on style (and different wheel combinations) depending on part number. You can also buy adapters for the 2 & 3-bolt flanges, so there are options to deal with either.
ScottFW is offline   Reply With Quote
Old 03-28-2010, 03:33 AM   #3
Newb
Thread Starter
iTrader: (1)
 
Join Date: Feb 2009
Posts: 23
Total Cats: 0
Default

Thanks for clearing that up. It sounds like Nissan used those flanges to bolt right onto the intake piping...it's probably a better connection than a worm clamp, especially when used at an OEM level.

I've seen the adapters, but I'd imagine it could create some spacing issues just from the bulk of the flanges.
CorsaGT is offline   Reply With Quote
Old 03-28-2010, 03:40 AM   #4
Murderator
iTrader: (76)
 
18psi's Avatar
 
Join Date: Apr 2008
Posts: 36,186
Total Cats: 2,582
Default

dsm's and generally older cars also have them.

Most newer cars don't though, so I don't really see it being "better" imo.

And there's always tbolt clamps. You don't have to suffer with worms
18psi is offline   Reply With Quote
Old 03-28-2010, 03:53 AM   #5
Newb
Thread Starter
iTrader: (1)
 
Join Date: Feb 2009
Posts: 23
Total Cats: 0
Default

Do newer turbo cars use t-bolt clamps on their piping? If not, then what? I haven't taken apart anything turbocharged made in the last decade.

It also brings up another question: It seems like most everyone has issues with turbo-to-downpipe nuts loosing up after track use or whatever on their aftermarket setups, yet I've never heard of this being an issue for the OEMs. I mean, look at those fancy Stage 8 locking fasteners FM recommends...I can't see manufacturers using something like that.
CorsaGT is offline   Reply With Quote
Old 03-28-2010, 04:06 AM   #6
Junior Member
iTrader: (2)
 
Join Date: Oct 2007
Location: Lisle, IL
Posts: 296
Total Cats: 0
Default

Quote:
Originally Posted by CorsaGT View Post

It also brings up another question: It seems like most everyone has issues with turbo-to-downpipe nuts loosing up after track use or whatever on their aftermarket setups, yet I've never heard of this being an issue for the OEMs. I mean, look at those fancy Stage 8 locking fasteners FM recommends...I can't see manufacturers using something like that.
The turbo to downpipe connection/bolts aren't usually the problem; the turbo to exhaust manifold flange connection & bolts can be problematic on cars running boost for extended periods of time (e.g., track cars running boost). Oversized studs made of more durable alloys (iconel) combined with oversize SS safety wire (to prevent loosening which creates more stress) seem to help with this. Not really an issue if you are running moderate boost on a street car.
sn95 is offline   Reply With Quote
Old 03-28-2010, 12:54 PM   #7
Elite Member
iTrader: (9)
 
TurboTim's Avatar
 
Join Date: Jun 2006
Location: Chesterfield, NJ
Posts: 6,484
Total Cats: 248
Default

Quote:
Originally Posted by CorsaGT View Post
I've seen identical turbos with those flanges and with the machined tube fittings, yet I don't think I've ever seen any options to choose between the two when purchasing a turbo.
The GT2560R's from FM have the flanges machined off, I think BEGI just welds a piece of pipe to the flange area. At some point (maybe still) FM/BEGI sourced these turbos from Limit Engineering who did the machine work. Many years ago I got my 2560 directly from limit with these flanges machined into 2.5" inlet and 2" outlet. It does make it a little easier to fit things, but I had to pay extra for it. At the time I didn't know where to get the pieces that bolt to the flanges. Now you can get them from ebay or ATP in all sorts of sizes.
TurboTim is offline   Reply With Quote
 
 
Reply

Related Topics
Thread Thread Starter Forum Replies Last Post
Another Cast Manifold Corky Bell Prefabbed Turbo Kits 18 11-22-2016 10:01 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
MT detectives, help me ID my old POS turbo AlwaysBroken DIY Turbo Discussion 3 09-21-2015 02:44 AM
WTB T25/T28 flanged turbo ASAP JesseTheNoob WTB 4 09-11-2015 02:25 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 03:22 PM.