More boost safely - 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 09-02-2011, 11:39 AM   #1
Senior Member
Thread Starter
iTrader: (5)
 
Join Date: May 2011
Location: London,OH
Posts: 1,125
Total Cats: 13
Default More boost safely

yesterday i hit my target boost 8psi, on a stock motor. i accidentally made a spool up to 12psi. surprisingly it ran good for the 2 seconds it was there no pinging detonation sounds made. i still have to install my 270cc injectors, but i was wondering how much more i can go before having to worry about it exploding. the setup consists of vortech fmu, msd boost retard box, stock ecu, greedy kit, ebay intercooler, and ebay bov.
redturbomiata is offline   Reply With Quote
Old 09-02-2011, 11:48 AM   #2
Senior Member
iTrader: (3)
 
Join Date: Nov 2009
Location: Royal Palm Beach, FL
Posts: 725
Total Cats: 5
Default

not much more. i wouldnt be going over 8psi without a ms.
Clos561 is offline   Reply With Quote
Old 09-02-2011, 02:50 PM   #3
Senior Member
iTrader: (1)
 
Join Date: Oct 2008
Location: Trailer County
Posts: 530
Total Cats: -9
Default

270cc injectors, pushed to the limit.

Do you have at least a wideband and intank Walbro 190 or 255 fuel pump?

When you say there was no damage, Did you do a compression test after that boost creep? and How do the spark plugs look?

I would do like Clos561, stay at 8 psi until the upgrades.

Those Greddy kits come with the typical T3/T4 or is it a smaller T25/28 turbocharger. Cause its not the same 8 psi from one to the other compressors.
mazpr is offline   Reply With Quote
Old 09-02-2011, 04:37 PM   #4
Senior Member
Thread Starter
iTrader: (5)
 
Join Date: May 2011
Location: London,OH
Posts: 1,125
Total Cats: 13
Default

the 270s arnt on the car yet. have a slightly better then oem fuel pump with a RRFPR. dont have the equipment to do a compression test. but it still runs just as good as it did before it happened. ik im a noob.
redturbomiata is offline   Reply With Quote
Old 09-02-2011, 07:14 PM   #5
Tour de Franzia
iTrader: (6)
 
hustler's Avatar
 
Join Date: Jun 2006
Location: Republic of Dallas
Posts: 29,114
Total Cats: 351
Default

You can run whatever MAP pressure that keeps you <=12:1 AFR and less than 250whp
hustler is offline   Reply With Quote
Old 09-02-2011, 08:19 PM   #6
I'm a terrible person
iTrader: (19)
 
FRT_Fun's Avatar
 
Join Date: Apr 2009
Location: Arizona
Posts: 7,293
Total Cats: 180
Default

Do you have a wideband? Like hustler said, as long as you can maintain less than 12:1, your injectors are doing okay. But you really shouldn't go above 8psi (although psi depends on turbo).
FRT_Fun is offline   Reply With Quote
Old 09-02-2011, 09:18 PM   #7
Senior Member
iTrader: (1)
 
Join Date: Oct 2008
Location: Trailer County
Posts: 530
Total Cats: -9
Default

If he has stock rods then there is a limit, 15 psi with a T3/T4 no more than that.

Stock cast pistons are good as there is a good tune, but the torque will bent the stock rods (if thats what you got).

A wideband is a must, and do install the wideband grounds like it states, the sensor itself not close to the downpipe, give around at least 3 feet from the turbo.

What sparkplugs are u using? gap?

Go NGK7 or NGK8, gap to .025.

The compression test will clearly tell if you have a bent rod. I had an engine with 3 bent rods, and two of them were bent and twisted, found out when I tore the engine from a blown oil pump (which I have stated in other threads).

I faithfully do compression tests everytime I start tuning, and sometimes do them every other or so oil change at least at the beginning.

(I know I blew a forged engine, but that is another story that will be decided on a small claims court due to a ghetto machine shop build)

It is a whole different ball game with a T3/T4 once you are hitting 12 to 15 psi, it is its sweet spot and power gains are insane. I still do not know if your Greddy kit includes such combo.
mazpr is offline   Reply With Quote
Old 09-03-2011, 12:07 AM   #8
Elite Member
iTrader: (3)
 
Join Date: Mar 2008
Location: Granbury, TX
Posts: 6,009
Total Cats: 583
Default

Stock Greddy uses a Mitsu TD04-16G.
hornetball is offline   Reply With Quote
Old 09-03-2011, 03:04 AM   #9
Senior Member
Thread Starter
iTrader: (5)
 
Join Date: May 2011
Location: London,OH
Posts: 1,125
Total Cats: 13
Default

what did they use that turbo on, wideband will be coming soon income permitting any good ones for a cheapish price , im using bosch platinum +4
redturbomiata is offline   Reply With Quote
Old 09-03-2011, 08:29 PM   #10
Supporting Vendor
iTrader: (31)
 
Savington's Avatar
 
Join Date: Nov 2006
Location: Sunnyvale, CA
Posts: 14,366
Total Cats: 1,326
Default

Why do people think widebands are optional?
Savington is online now   Reply With Quote
Old 09-03-2011, 08:49 PM   #11
I'm a terrible person
iTrader: (19)
 
FRT_Fun's Avatar
 
Join Date: Apr 2009
Location: Arizona
Posts: 7,293
Total Cats: 180
Default

Quote:
Originally Posted by redturbomiata View Post
what did they use that turbo on, wideband will be coming soon income permitting any good ones for a cheapish price , im using bosch platinum +4
AEM OR Innovate Motorsports LC-1 or similar.

I personally like the AEM for my DD/Street fun car. But I know there are a lot of die hard Innovate fans here.
FRT_Fun is offline   Reply With Quote
Old 09-03-2011, 08:57 PM   #12
Junior Member
iTrader: (15)
 
Join Date: Apr 2010
Location: quebec,canada
Posts: 403
Total Cats: 1
Default

Quote:
Originally Posted by mazpr View Post
If he has stock rods then there is a limit, 15 psi with a T3/T4 no more than that.

Stock cast pistons are good as there is a good tune, but the torque will bent the stock rods (if thats what you got).
what kind of turbo are you refering to, because, it's really not a limit at all.

i ran multiple t3t4(stage 1 t3, t3t4B,t3t4E Htrim, and a t3t4e 60-1 on a stock-internal BP with over 20 psi without bending anything, and that, for a couple of [email protected]+ drag runs a year.with 312whp i never encounter anyproblems at all, exept expoding a diff every week or so.(2006-2010 on a fwd mx-3 bp)

stock BP rods can take 20 psi, b6t rods can take much more(from my personal experience)
kaboshe is online now   Reply With Quote
Old 09-03-2011, 09:08 PM   #13
Murderator
iTrader: (76)
 
18psi's Avatar
 
Join Date: Apr 2008
Posts: 36,187
Total Cats: 2,583
Default

mazpr is a ******* idiot and spreads utter bullshit on this forum with nearly every post.
Seriously. Noobs be warned.

There is no set limit for anything. It all varies.

OP is a lost cause if he hit 12psi on stock injectors and no wbo2
18psi is offline   Reply With Quote
Old 09-03-2011, 09:12 PM   #14
I'm a terrible person
iTrader: (19)
 
FRT_Fun's Avatar
 
Join Date: Apr 2009
Location: Arizona
Posts: 7,293
Total Cats: 180
Default

WTF IS THIS ****.

I'm sure his BANDAID FUEL SYSTEM will go before his rods so why are we even mentioning them in this thread.?.?.? How long will the internals last at 100000:1 AFRs?
FRT_Fun is offline   Reply With Quote
Old 09-03-2011, 09:33 PM   #15
Murderator
iTrader: (76)
 
18psi's Avatar
 
Join Date: Apr 2008
Posts: 36,187
Total Cats: 2,583
Default

lol exactly. the level of half *** ghetto riggedness has reached a new low
18psi is offline   Reply With Quote
Old 09-03-2011, 10:02 PM   #16
Junior Member
iTrader: (15)
 
Join Date: Apr 2010
Location: quebec,canada
Posts: 403
Total Cats: 1
Default

with bandaids and no wideband, i wouldn't boost 1 psi fearing way more than rods
kaboshe is online now   Reply With Quote
Old 09-03-2011, 10:33 PM   #17
I'm a terrible person
iTrader: (19)
 
FRT_Fun's Avatar
 
Join Date: Apr 2009
Location: Arizona
Posts: 7,293
Total Cats: 180
Default

OP, bandaids caaaaaaaaaaaan be okay, but you need a wideband... like.. yesterday.

That is step one in being safe.

Step two, as we all know, is a MS.
FRT_Fun is offline   Reply With Quote
Old 09-03-2011, 10:51 PM   #18
Senior Member
Thread Starter
iTrader: (5)
 
Join Date: May 2011
Location: London,OH
Posts: 1,125
Total Cats: 13
Default

the car was ghetto when i got it, i bought in way over my head and have been trying to learn whats needed to do it right and how half assed the car was when i bought it. much apricated for the input. wideband should be purchased after payday (thursday) oh and got a compression test scheduled monday we will see what happens.

Last edited by redturbomiata; 09-03-2011 at 11:13 PM.
redturbomiata is offline   Reply With Quote
Old 09-03-2011, 10:55 PM   #19
Senior Member
Thread Starter
iTrader: (5)
 
Join Date: May 2011
Location: London,OH
Posts: 1,125
Total Cats: 13
Default

this work?
redturbomiata is offline   Reply With Quote
Old 09-03-2011, 11:01 PM   #20
Senior Member
iTrader: (1)
 
Join Date: Oct 2008
Location: Trailer County
Posts: 530
Total Cats: -9
Default

18 psi, each setup is completely different, but looking to what he has I would not go any further on boost. All following posts to yours state the same freakin genius.

Have you ever installed a bandaid? Have you ever used one? So shut the **** up as you dont know shyt what they can do...

I bent 3 rods, the pistons are fine, is it tuning, uh, Can post pics so you can go and release ur frustration at ChuKy ChyZe



Kaboshe, I dont want to start a ping pong game and hijack the thread, whatever lucky you...

It has been proven on clubprotege.com and in carrito.net (under Mazda) Puerto Rico forum that rods are the weak link.

I have been flamed many times, til to this day nobody in the Jacksonville area has shown up, burp!

You no what, there is no limit, crank that **** to 20 psi like Kaboshe says, have fun on the dragstrip, LOL.



Here, just follow the following settings to prevent any headaches.
Attached Thumbnails
More boost safely-chuckecheese.gif  

Last edited by mazpr; 09-03-2011 at 11:27 PM.
mazpr is offline   Reply With Quote
 
 
Reply

Related Topics
Thread Thread Starter Forum Replies Last Post
Project Gemini - Turbo Civic on the Cheap Full_Tilt_Boogie Build Threads 58 Yesterday 10:04 PM
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
Going back to stock. Need some 1.6 parts. Trent WTB 2 10-01-2015 01:15 PM
Bad head gasket or ? shooterschmidty Engine Performance 8 09-30-2015 11:28 PM


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 11:12 PM.