how high can a miata boost - 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 06-13-2009, 06:44 AM   #1
Newb
Thread Starter
 
Join Date: Sep 2008
Location: St.Paul,MN
Posts: 16
Total Cats: 0
Default how high can a miata boost

How high can a stock miata boost ?
yajkenji is offline   Reply With Quote
Old 06-13-2009, 07:03 AM   #2
Senior Member
iTrader: (2)
 
Join Date: Jun 2006
Location: Springfield, NJ
Posts: 670
Total Cats: 0
Default

Plenty of us run approx. 15 psi safely on stock internals, by using aftermarket engine computers, premium gas, constantly monitoring AFR, etc.

Few people dare exceed that much without built motors.

But I'm sure other people here will post replies with more detailed answers, and/or flames for asking such a dumb question without searching first.

Either way I look forward to reading them.

Last edited by evank; 06-13-2009 at 07:36 AM.
evank is offline   Reply With Quote
Old 06-13-2009, 07:10 AM   #3
I'm Miserable!
iTrader: (16)
 
Join Date: Dec 2008
Location: where most people are Utarded
Posts: 1,323
Total Cats: 0
Default

in for pending amusement
zoomin is offline   Reply With Quote
Old 06-13-2009, 09:22 AM   #4
Junior Member
 
Join Date: Jan 2006
Location: Toronto
Posts: 182
Total Cats: 0
Default

Quote:
Originally Posted by evank View Post
Plenty of us run approx. 15 psi safely on stock internals, by using aftermarket engine computers, premium gas, constantly monitoring AFR, etc.

Few people dare exceed that much without built motors.

But I'm sure other people here will post replies with more detailed answers, and/or flames for asking such a dumb question without searching first.

Either way I look forward to reading them.
Heads up Evank, I bent a rod at 15psi, almost took out the motor.

OP, you're going to get some "colorful" responses, don't take it personally and use the search function. There have been lots of posts on this subject.
fluke is offline   Reply With Quote
Old 06-13-2009, 09:29 AM   #5
meatbag
iTrader: (50)
 
gospeed81's Avatar
 
Join Date: Nov 2008
Location: Houston, TX
Posts: 7,357
Total Cats: 26
Default

Quote:
Originally Posted by yajkenji View Post
How high can a stock miata boost ?
Up to about 15,000ft. But you should keep a close eye on AFRs when driving in the mountains.

Wait, stock Miatas don't have turbos.
gospeed81 is offline   Reply With Quote
Old 06-13-2009, 09:37 AM   #6
Junior Member
 
Join Date: Jul 2006
Location: UK
Posts: 157
Total Cats: 0
Default

With the right engine management you are good to 15/16psi on stock internals in my experience. I ran those values on a stock 1.6L FM2, then later with headwork, TEC3r, WI and a GT2860RS (0.86AR) for 60k miles with no problem. During that time the engine power went from 230bhp to 280bhp or so with the later additions. Torque (and rpm) is probably a better measure of how far you can go on stock internals though.
slowmx5 is offline   Reply With Quote
Old 06-13-2009, 09:37 AM   #7
I'm a terrible person
iTrader: (19)
 
FRT_Fun's Avatar
 
Join Date: Apr 2009
Location: Arizona
Posts: 7,293
Total Cats: 180
Default

Why would a stock miata be boosted? What generation are we talking here?
FRT_Fun is offline   Reply With Quote
Old 06-13-2009, 10:04 AM   #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

Greetings, yajkenji. As you've no doubt noticed by now, some questions get asked so often around here that the locals tire of them.

Short answer: there are many, many variables other than just boost pressure which influence how much the motor will stand up to before you break it. Engine management, charge cooling, state of tune, turbo size / efficiency, mechanical empathy, phase of the moon, etc.

Some folks are putting down 250 HP on stock internals. Others have cracked pistons and bent rods below 200.
Joe Perez is online now   Reply With Quote
Old 06-13-2009, 10:26 AM   #9
Elite Member
iTrader: (11)
 
Join Date: Jun 2007
Location: Meriden, CT
Posts: 2,072
Total Cats: 1
Default

Quote:
Originally Posted by evank View Post
Plenty of us run approx. 15 psi safely on stock internals, by using aftermarket engine computers, premium gas, constantly monitoring AFR, etc.

Few people dare exceed that much without built motors.

Cspence is offline   Reply With Quote
Old 06-13-2009, 10:42 AM   #10
Tour de Franzia
iTrader: (6)
 
hustler's Avatar
 
Join Date: Jun 2006
Location: Republic of Dallas
Posts: 29,114
Total Cats: 351
Default

20g's, son.
hustler is offline   Reply With Quote
Old 06-13-2009, 11:01 AM   #11
Elite Member
iTrader: (1)
 
Join Date: May 2009
Location: Jacksonville, FL
Posts: 4,682
Total Cats: 216
Default

*facepalm*

How much boost on a gt2554 or on a gt3071?

There's a huge difference...
Full_Tilt_Boogie is offline   Reply With Quote
Old 06-13-2009, 12:07 PM   #12
Senior Member
iTrader: (14)
 
Join Date: Aug 2008
Location: Tinley Park, IL
Posts: 1,488
Total Cats: 0
Default

Quote:
Originally Posted by Joe Perez View Post

Short answer: there are many, many variables other than just boost pressure which influence how much the motor will stand up to before you break it. Engine management, charge cooling, state of tune, turbo size / efficiency, mechanical empathy, phase of the moon, etc.
Don't forget, there may also be a butterfly flapping it's wings in Japan! That could change everything.
lordrigamus is offline   Reply With Quote
Old 06-13-2009, 12:44 PM   #13
Elite Member
iTrader: (3)
 
Join Date: Feb 2008
Location: Huntsville, AL
Posts: 1,881
Total Cats: 45
Default

Quote:
Originally Posted by lordrigamus View Post
don't forget, there may also be a butterfly flapping it's wings in japan! That could change everything.
mooothraaaaaaaaa!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
vehicular is offline   Reply With Quote
Old 06-13-2009, 12:54 PM   #14
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 lordrigamus View Post
a butterfly flapping it's wings in Japan!
It is a common misconception that the use of the apostrophe is appropriate in the possessive form of the word "it."

While the apostrophe is generally used to create the possessive construct of a noun (including indefinite pronouns), it is not used to indicate possession in the case of a personal pronoun such as yours, his, hers, ours, its, theirs, and whose.

The only situation in which an apostrophe is used with "it" is to form contractions such as "it is" and "it has."
Joe Perez is online now   Reply With Quote
Old 06-13-2009, 12:55 PM   #15
Senior Member
iTrader: (14)
 
Join Date: Aug 2008
Location: Tinley Park, IL
Posts: 1,488
Total Cats: 0
Default

You know... when those mini Asian chicks started singing... It kind of freaked me out.

I'm scared of clowns too. Just so you know.
lordrigamus is offline   Reply With Quote
Old 06-13-2009, 12:59 PM   #16
Senior Member
iTrader: (14)
 
Join Date: Aug 2008
Location: Tinley Park, IL
Posts: 1,488
Total Cats: 0
Default

Quote:
Originally Posted by Joe Perez View Post
It is a common misconception that the use of the apostrophe is appropriate in the possessive form of the word "it."

While the apostrophe is generally used to create the possessive construct of a noun (including indefinite pronouns), it is not used to indicate possession in the case of a personal pronoun such as yours, his, hers, ours, its, theirs, and whose.

The only situation in which an apostrophe is used with "it" is to form contractions such as "it is" and "it has."
Thank you good sir, I stand corrected.
lordrigamus is offline   Reply With Quote
Old 06-13-2009, 01:03 PM   #17
Elite Member
iTrader: (24)
 
kotomile's Avatar
 
Join Date: Oct 2006
Location: Monterey, CA
Posts: 7,578
Total Cats: 40
Default

42.
kotomile is offline   Reply With Quote
Old 06-13-2009, 01:18 PM   #18
Senior Member
iTrader: (14)
 
Join Date: Aug 2008
Location: Tinley Park, IL
Posts: 1,488
Total Cats: 0
Default

Quote:
Originally Posted by kotomile View Post
42.
Yes... and it is quite a trek sometimes.
lordrigamus is offline   Reply With Quote
Old 06-13-2009, 01:24 PM   #19
Senior Member
iTrader: (6)
 
Join Date: Sep 2007
Posts: 1,085
Total Cats: 30
Default

I dunno how tall are your jackstands?
albumleaf is offline   Reply With Quote
Old 06-13-2009, 01:28 PM   #20
Senior Member
iTrader: (14)
 
Join Date: Aug 2008
Location: Tinley Park, IL
Posts: 1,488
Total Cats: 0
Default

Quote:
Originally Posted by albumleaf View Post
I dunno how tall are your jackstands?
Great reply!
lordrigamus is offline   Reply With Quote
 
 
Reply

Related Topics
Thread Thread Starter Forum Replies Last Post
elesjuan's mediocre 95 Miata adventure (google fiber edition) elesjuan Build Threads 8 02-16-2016 09:36 PM
MS PNP requires reading and following directions??? satisfied MEGAsquirt 141 10-06-2015 11:44 AM
starting issue Johnny Tater Engine Performance 3 09-23-2015 07:10 PM
Project DDoS: '99 "Budget" boost build ProjectDDoS Build Threads 1 09-09-2015 02:52 PM
New here, saying hi, here's what I'm workin with. SuperSneakySecretSquirrel Meet and Greet 5 09-06-2015 09:30 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 10:27 PM.