Which turbo would best work for what I want to gain? - Miata Turbo Forum - Boost cars, acquire cats.

Welcome to Miataturbo.net   Members
 


Engine Performance This section is for discussion on all engine building related questions.
Sponsored by:
Sponsored by:

Reply
 
 
 
LinkBack Thread Tools Search this Thread
Old 03-11-2011, 06:56 PM   #1
Newb
Thread Starter
 
Join Date: Feb 2011
Posts: 42
Total Cats: 0
Default Which turbo would best work for what I want to gain?

I recently acquired a 1999 10AE Miata with a built engine that is already tuned. It already has upgraded injectors, a Microtech LT-10s EMS, FM exhaust manifold/downpipe/full exhaust, and a crappy T25/T28 chinacharger that was rebuilt when the engine was built up.

I am looking to replace the current crappy Chinacharger with a better turbo that can help me better match what I want.

My goal is 280whp, and would like the turbo to spool up as early as possible.

For the most part, I am currently torn between the GT2860R, GT2860RS with the .64 A/R housing, and the GT2860RS with the .86 A/R housing.

Which of these would best suit my goals?
bdohaney is offline   Reply With Quote
Old 03-11-2011, 06:57 PM   #2
Murderator
iTrader: (76)
 
18psi's Avatar
 
Join Date: Apr 2008
Posts: 36,163
Total Cats: 2,573
Default

If you're not looking for much more than 280, the 28rs with .64 should get the job done and provide a very enjoyable curve.
18psi is offline   Reply With Quote
Old 03-11-2011, 07:08 PM   #3
Boost Pope
iTrader: (8)
 
Joe Perez's Avatar
 
Join Date: Sep 2005
Location: Chicago (Over two miles from Wrigley Field. Fuck the Cubs. Fuck them in their smarmy goat-hole.)
Posts: 26,315
Total Cats: 1,913
Default

Honest question: why isn't the 2560R listed?
Joe Perez is offline   Reply With Quote
Old 03-11-2011, 07:13 PM   #4
Newb
Thread Starter
 
Join Date: Feb 2011
Posts: 42
Total Cats: 0
Default

Only reason I didn't list the 2560 is I understand that 280whp is at the very edge of what it is capable of.

If I could reasonably get 280whp out of it, I obviously wouldn't object to it either.

Better stated, I guess would be a range... I want to have between 270whp and 295whp, which I am guessing (from what I have read/looked at) would take somewhere around 14-18psi which would be better suited to one of the GT28's...
bdohaney is offline   Reply With Quote
Old 03-11-2011, 07:13 PM   #5
Murderator
iTrader: (76)
 
18psi's Avatar
 
Join Date: Apr 2008
Posts: 36,163
Total Cats: 2,573
Default

Won't a 2560 be closed to maxed out at 280 wheel? I know Paul made 300 with one, but thats really not that common.

*edit; OP beat me to it

If you might want more later why not go with a 2871 then? Easily capable of 280 and even 350 without sacrificing much lowend, if any.
18psi is offline   Reply With Quote
Old 03-11-2011, 08:10 PM   #6
Senior Member
iTrader: (5)
 
Join Date: Jan 2008
Location: Central, TX / Bay area, CA
Posts: 1,272
Total Cats: 3
Default

I think sav has dyno charts showing the difference between the 2860 and the 71,
Gotpsi? is offline   Reply With Quote
Old 03-11-2011, 08:39 PM   #7
Tour de Franzia
iTrader: (6)
 
hustler's Avatar
 
Join Date: Jun 2006
Location: Republic of Dallas
Posts: 29,114
Total Cats: 351
Default

Quote:
Originally Posted by 18psi View Post
If you're not looking for much more than 280, the 28rs with .64 should get the job done and provide a very enjoyable curve.
Negative, he wants the .86.
hustler is offline   Reply With Quote
Old 03-11-2011, 08:46 PM   #8
Boost Pope
iTrader: (8)
 
Joe Perez's Avatar
 
Join Date: Sep 2005
Location: Chicago (Over two miles from Wrigley Field. Fuck the Cubs. Fuck them in their smarmy goat-hole.)
Posts: 26,315
Total Cats: 1,913
Default

Quote:
Originally Posted by bdohaney View Post
My goal is 280whp, and would like the turbo to spool up as early as possible.
.
Joe Perez is offline   Reply With Quote
Old 03-11-2011, 09:16 PM   #9
Newb
Thread Starter
 
Join Date: Feb 2011
Posts: 42
Total Cats: 0
Default

So, from what I am seeing here is that I have to really decide what is more important to me... Meeting my whp goals, or spool up minimization goal...

*sigh*
bdohaney is offline   Reply With Quote
Old 03-11-2011, 09:39 PM   #10
NB/VVT Connoisseur
iTrader: (23)
 
viperormiata's Avatar
 
Join Date: Aug 2008
Location: Key West
Posts: 6,065
Total Cats: 253
Default

http://cgi.ebay.com/ebaymotors/Genui...item230e516c80

Less than 700 bucks and will get you to 280whp easy *With the proper supporting accessories*

Spool characteristics can be found all over this forum. It is a VERY popular turbo.
viperormiata is offline   Reply With Quote
Old 03-11-2011, 09:45 PM   #11
MT Pony Underground
iTrader: (6)
 
Nagase's Avatar
 
Join Date: May 2009
Posts: 1,811
Total Cats: 0
Default

Seriously. 2560. There's no reason to go with anything else.
Nagase is offline   Reply With Quote
Old 03-11-2011, 10:13 PM   #12
Newb
Thread Starter
 
Join Date: Feb 2011
Posts: 42
Total Cats: 0
Default

Reading the spool data thread, made me remember to mention that I am at almost 5000ft elevation as well... If that makes any difference.
bdohaney is offline   Reply With Quote
Old 03-11-2011, 10:52 PM   #13
MT Pony Underground
iTrader: (6)
 
Nagase's Avatar
 
Join Date: May 2009
Posts: 1,811
Total Cats: 0
Default

Awesome. Put on a good 2560R setup, then go to FlyinMiata and they'll dyno you in at 330whp.
Nagase is offline   Reply With Quote
Old 03-12-2011, 03:40 AM   #14
Newb
Thread Starter
 
Join Date: Feb 2011
Posts: 42
Total Cats: 0
Default

Ah... So the plot thickens... In reading thread after thread after thread...

I came across the BW EFR turbos... Any thoughts towards going with the BW EFR 6255 or 6258?

I think that either would meet both of my goals...
bdohaney is offline   Reply With Quote
Old 03-12-2011, 03:41 AM   #15
MT Pony Underground
iTrader: (6)
 
Nagase's Avatar
 
Join Date: May 2009
Posts: 1,811
Total Cats: 0
Default

The 6255 is useless for Miatas. No better response than the 58. The 6258 is a 450whp turbo, which would meet your 280whp goal.

A massively oversized turbo for your goal is not the best way to get maximum response.
Nagase is offline   Reply With Quote
Old 03-12-2011, 03:55 AM   #16
Newb
Thread Starter
 
Join Date: Feb 2011
Posts: 42
Total Cats: 0
Default

Damn.

Really kinda seeming like the whp I want is in a limbo area, at the top edge of a 2560, and at the bottom edge of the GT2871R, GT30R's and the 6258... And it seems not many around here like the 2860RS... It will be a couple weeks-couple months before I can get it anyhow, waiting on my tax refund.

Well, Nagase, seeing that you are in Phoenix, any chance you might know of any good tuners down Tucson way, or any tuners at all that are good with a Microtech LT-10s? I've got nothing down here in Sierra Vista.
bdohaney is offline   Reply With Quote
Old 03-12-2011, 03:56 AM   #17
MT Pony Underground
iTrader: (6)
 
Nagase's Avatar
 
Join Date: May 2009
Posts: 1,811
Total Cats: 0
Default

I have a GT2560R that I'm shooting for 320whp on.

With a good setup, 280whp shouldn't be anything, depending on if the dyno is a killer or not.

And no, never looked into tuners. I have megasquirt, I do my own.
Nagase is offline   Reply With Quote
Old 03-12-2011, 03:56 AM   #18
Newb
Thread Starter
 
Join Date: Feb 2011
Posts: 42
Total Cats: 0
Default

I wish someone would just start actually producing airfoil bearing turbos...

Would make my decision ridiculously easy then...
bdohaney is offline   Reply With Quote
Old 03-12-2011, 03:58 AM   #19
Newb
Thread Starter
 
Join Date: Feb 2011
Posts: 42
Total Cats: 0
Default

Great. I think I will probably actually go with the 2560R then... If I feel I need more, I can always sell it later and get something bigger.

What is the real sweet spot for boost on the 2560R?
bdohaney is offline   Reply With Quote
Old 03-12-2011, 04:00 AM   #20
MT Pony Underground
iTrader: (6)
 
Nagase's Avatar
 
Join Date: May 2009
Posts: 1,811
Total Cats: 0
Default

Not sure what you mean by sweet spot, but I'm going for ~18.5 psi.
Nagase is offline   Reply With Quote
 
 
Reply

Related Topics
Thread Thread Starter Forum Replies Last Post
91 1.6l turbo complete part out. Tony the Tiger Miata parts for sale/trade 63 12-29-2016 03:23 AM
MS PNP requires reading and following directions??? satisfied MEGAsquirt 141 10-06-2015 11:44 AM
Anything To Gain from Using Piggyback on N/A car? 2000SE ECUs and Tuning 5 09-08-2015 12:30 PM
Hi turbo kitten nelson8708 Meet and Greet 11 09-06-2015 10:49 AM


Thread Tools Search this Thread
Search this Thread:

Advanced Search

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 10:31 PM.