external gate housing on gt2560r? - 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, 09:25 PM   #1
Junior Member
Thread Starter
iTrader: (4)
 
Join Date: Feb 2009
Location: Raleigh, NC
Posts: 321
Total Cats: 0
Default external gate housing on gt2560r?

My goal is 200-230hp with as little drama as possible. I realize EWG is probably overkill, but everyone always preaches "do it right the first time" so that's the type of setup I am planning, able to upgrade while keeping most of the same parts if I ever want more power.



t3 inlet, .48 a/r

I've not come across anyone using this, is it not worth it? I am looking at going EWG and considering my options. Immediate con is that I have never seen one of these used for sale. ($$$)

-How will this compare to the usual t25 .64 a/r in performance? (all I found was Turbine flow rating of .63 A/R T31 is comparable to T25 flanged .86 AR.)

-should I just find an internally gated version and pin the flapper shut instead?

-Can I put this housing on a previously gated turbo? (in my garage)

thanks in advance, please be gentle
kewilso3 is offline   Reply With Quote
Old 03-27-2010, 09:27 PM   #2
Elite Member
iTrader: (17)
 
Join Date: Apr 2009
Location: Atlanta, GA
Posts: 2,831
Total Cats: 0
Default

is that part made for a 2560?

dont waste your money on another housing! just have the wastegate flap welded shut and get a mani for a EWG! DONE!

/thread
WonTon is offline   Reply With Quote
Old 03-27-2010, 09:58 PM   #3
Junior Member
Thread Starter
iTrader: (4)
 
Join Date: Feb 2009
Location: Raleigh, NC
Posts: 321
Total Cats: 0
Default

from what I understand, all other parts would remain identical.
kewilso3 is offline   Reply With Quote
Old 03-27-2010, 10:03 PM   #4
Elite Member
iTrader: (17)
 
Join Date: Apr 2009
Location: Atlanta, GA
Posts: 2,831
Total Cats: 0
Default

i dont think it will work right! when you pull the turbine housing off you can see the shape of the turbine blades! if the inside of that T3 BS you want is to small you can **** **** up and if its too big all you will get is blow by and no spool!

if you want a reliable set up capable of close to 300 rwhp buy my stuff! https://www.miataturbo.net/forum/t45406/
WonTon is offline   Reply With Quote
Old 03-27-2010, 10:05 PM   #5
Junior Member
Thread Starter
iTrader: (4)
 
Join Date: Feb 2009
Location: Raleigh, NC
Posts: 321
Total Cats: 0
Default

You can order a gt2560r with that housing on it brand new. If the inlet is larger and the blades the same, a/r will change. I think. But I dont know enough to know what the change will mean
kewilso3 is offline   Reply With Quote
Old 03-27-2010, 10:07 PM   #6
Elite Member
iTrader: (17)
 
Join Date: Apr 2009
Location: Atlanta, GA
Posts: 2,831
Total Cats: 0
Default

hounestly! just stick with what works fine the way it is!
WonTon is offline   Reply With Quote
Old 03-27-2010, 10:09 PM   #7
Junior Member
Thread Starter
iTrader: (4)
 
Join Date: Feb 2009
Location: Raleigh, NC
Posts: 321
Total Cats: 0
Default

why? you want me to buy your setup?
kewilso3 is offline   Reply With Quote
Old 03-27-2010, 10:09 PM   #8
Elite Member
iTrader: (17)
 
Join Date: Apr 2009
Location: Atlanta, GA
Posts: 2,831
Total Cats: 0
Default

Quote:
Originally Posted by kewilso3 View Post
from what I understand, all other parts would remain identical.
another thing to note is your changing a T25 flanged turbo to a T3 which are completely different!

Quote:
Originally Posted by kewilso3 View Post
why? you want me to buy your setup?
hell yeah! buy my stuff! it works and it will meet your goals!
WonTon is offline   Reply With Quote
Old 03-27-2010, 10:10 PM   #9
Junior Member
Thread Starter
iTrader: (4)
 
Join Date: Feb 2009
Location: Raleigh, NC
Posts: 321
Total Cats: 0
Default

Thank you I know. That wasnt the question

I might buy it, you're pretty close by too. Now back on topic.
kewilso3 is offline   Reply With Quote
Old 03-27-2010, 10:59 PM   #10
Junior Member
Thread Starter
iTrader: (4)
 
Join Date: Feb 2009
Location: Raleigh, NC
Posts: 321
Total Cats: 0
Default

Supposedly Garrett T3 .48 A/R flow rating is comparable to T25 flanged .64, so...

shut flapper works just as well?
kewilso3 is offline   Reply With Quote
Old 03-27-2010, 11:05 PM   #11
Elite Member
iTrader: (17)
 
Join Date: Apr 2009
Location: Atlanta, GA
Posts: 2,831
Total Cats: 0
Default

Quote:
Originally Posted by kewilso3 View Post
Supposedly Garrett T3 .48 A/R flow rating is comparable to T25 flanged .64, so...

shut flapper works just as well?
it may have a flow rating comparable but doesnt mean it works! yeh shutting the flapper works just fine!
WonTon is offline   Reply With Quote
Old 03-27-2010, 11:09 PM   #12
Elite Member
iTrader: (7)
 
samnavy's Avatar
 
Join Date: Apr 2006
Location: VIRGINIA BEACH, VA
Posts: 6,020
Total Cats: 175
Default

There's a big difference between 200-230whp... big difference. For 200, there's no reason at all for the 2560 or EWG. On a properly tuned 1.8, you should hit 200whp with a 2554r at 10psi or so. With an exhintake and adjustable camgears, maybe a little less. I've seen 99's hit 200whp at 8psi and spooling practically off idle with a 54. I don't think at that boost the 2560 has a significant torque advantage... and EWG is total overkill. You'll have no issues with boost management with internal gate... if it's really bugging you, have the internal gate ported a little bit.

For 230whp, you're probably into torque advantage territory for a 1.8 for a 2560, but still no need for external. You'll have no problem hitting 230whp on a 54r with a proper tune on even a beat 1.8.

I'm feelin' ya on the "do it right the first time" thing... but an external gate setup is going to cost in the 50% more money range for hardware, and might get you a few extra datums of precision... but for the money, get the exhintake and camgears instead or spring for a better manifold or have a hi-flow head built.
samnavy is offline   Reply With Quote
Old 03-27-2010, 11:19 PM   #13
Elite Member
iTrader: (17)
 
Join Date: Apr 2009
Location: Atlanta, GA
Posts: 2,831
Total Cats: 0
Default

^^^^this!
WonTon is offline   Reply With Quote
Old 03-27-2010, 11:31 PM   #14
Junior Member
Thread Starter
iTrader: (4)
 
Join Date: Feb 2009
Location: Raleigh, NC
Posts: 321
Total Cats: 0
Default

yeah I guess it make sense to go with the internal, because even if I do go External, I can keep my turbo and even most of my DP maybe, but not vice versa. Plus proven and cheaper.

SO NEW QUESTION: In a money is no object situation, which would you choose? All else equal
kewilso3 is offline   Reply With Quote
Old 03-27-2010, 11:45 PM   #15
Elite Member
iTrader: (17)
 
Join Date: Apr 2009
Location: Atlanta, GA
Posts: 2,831
Total Cats: 0
Default

Quote:
Originally Posted by kewilso3 View Post
SO NEW QUESTION: In a money is no object situation, which would you choose? All else equal
ARTech or ABSURDflow mani, ARTech or ABSURDflow downpipe, gt2860rs with tial v-band exhaust housing, tial 38mm wastegate, 3'' straight pipe exhaust, megasquirt, forged everything, bullet proof 6-speed, bullet proof rearend and a fuckload of boost!
WonTon is offline   Reply With Quote
Old 03-28-2010, 12:08 AM   #16
Junior Member
Thread Starter
iTrader: (4)
 
Join Date: Feb 2009
Location: Raleigh, NC
Posts: 321
Total Cats: 0
Default

ok nevermind
kewilso3 is offline   Reply With Quote
Old 03-28-2010, 12:13 AM   #17
Elite Member
iTrader: (17)
 
Join Date: Apr 2009
Location: Atlanta, GA
Posts: 2,831
Total Cats: 0
Default

WonTon is offline   Reply With Quote
Old 03-28-2010, 01:11 PM   #18
Elite Member
iTrader: (9)
 
TurboTim's Avatar
 
Join Date: Jun 2006
Location: Chesterfield, NJ
Posts: 6,485
Total Cats: 248
Default

Quote:
Originally Posted by WonTon View Post
is that part made for a 2560?
Yes this part is made for the 2560. I'd get it from ATP just to be sure. It's for people with an externally gated T3 manifold that want to use the smaller turbos.

Garrett GT2560R (aka GT28R) Ball Bearing Turbo : atpturbo.com

Does it make sense to use it? If you have a T3 externally gated manifold and want to run the 2560, sure. If you're starting from scratch you might as well keep the standard turbine and save the cost of the external wastegate. For your power levels you'll have no issues.
TurboTim is offline   Reply With Quote
Old 03-28-2010, 01:52 PM   #19
Elite Member
iTrader: (17)
 
Join Date: Apr 2009
Location: Atlanta, GA
Posts: 2,831
Total Cats: 0
Default

thats what i was wondering from the beginning! even though there is a housing that works, my logic points to save the money from it and put it to something more important!
WonTon is offline   Reply With Quote
 
 
Reply

Related Topics
Thread Thread Starter Forum Replies Last Post
OTS Bilstein to motorsports ASN conversion stoves Suspension, Brakes, Drivetrain 5 04-21-2016 04:00 PM
LucaCarMods's Boosted Dutch Miata Build! LucaCarMods Build Threads 11 02-14-2016 07:13 AM
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
1991 Turbo Miata partout tottestad Miata parts for sale/trade 18 09-14-2015 08:52 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 09:59 PM.