So I feel like I'm spooling slow - GT2860RS - Page 2 - 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 08-02-2011, 01:37 PM   #21
Junior Member
iTrader: (1)
 
Join Date: Jun 2009
Location: Auburn Maine
Posts: 185
Total Cats: 0
Default

If it is the basic turbo xs controller and not the high performance one with 2 screws it is a bleed type.

Ball and spring will make a huge difference especially with an internal gate.

vw_nut is offline   Reply With Quote
Old 08-02-2011, 02:46 PM   #22
Elite Member
iTrader: (8)
 
Join Date: Sep 2006
Location: Severn, MD
Posts: 1,927
Total Cats: 5
Default

Google search for turbo boost leak tester, do it, post results of where you hear the whistling/whooshing sound.
fmowry is offline   Reply With Quote
Old 08-02-2011, 03:21 PM   #23
Senior Member
Thread Starter
iTrader: (7)
 
Join Date: Sep 2009
Location: Royal Oak Michigan
Posts: 756
Total Cats: 67
Default

I'm not dismissing the leak possibility, just looking for updated opinions after the video. I'll run the test after work and we'll see what I come up with. Thanks for the input related to the BEGI valve specifically.

Quote:
Originally Posted by pdexta View Post
I just wanted to be the 7th person to suggest that it's most likely a boost leak. As stated previously, a leak between the turbo and throttle body will not affect idle or drop off boost at high rpms.

When I first turbocharged my car I made the exact same thread, everyone said it was a boost leak so I pressure tested the charge piping. My blow off valve (that came with the BEGI kit) was leaking quite a bit of air. I swapped it out and the problem was gone.
miatauser123 is offline   Reply With Quote
Old 08-02-2011, 04:54 PM   #24
Junior Member
iTrader: (1)
 
Join Date: Oct 2009
Posts: 208
Total Cats: 0
Default

a good way to check for a vacuum leak is to spray brake cleaner around all the connections and wait for a drop in idle
v01canic is offline   Reply With Quote
Old 08-02-2011, 05:20 PM   #25
Supporting Vendor
iTrader: (31)
 
Savington's Avatar
 
Join Date: Nov 2006
Location: Sunnyvale, CA
Posts: 14,353
Total Cats: 1,319
Default

Quote:
Originally Posted by Dem768 View Post
It's probably not the boost controller.
I'll one-up you - it's definitely not the boost controller. You have a big-*** boost leak, or a problem with the wastegate/wastegate actuator. Pressurize your charge pipes/IC first.
Savington is offline   Reply With Quote
Old 08-02-2011, 06:50 PM   #26
Senior Member
Thread Starter
iTrader: (7)
 
Join Date: Sep 2009
Location: Royal Oak Michigan
Posts: 756
Total Cats: 67
Default

Bahah. I've never driven this car without that problem... I'm a little excited.
miatauser123 is offline   Reply With Quote
Old 08-02-2011, 10:51 PM   #27
Senior Member
Thread Starter
iTrader: (7)
 
Join Date: Sep 2009
Location: Royal Oak Michigan
Posts: 756
Total Cats: 67
Default

So I took off my intake pipe and connected my tester coupler... Blew 100% of 20lbs out the back of my turbo. New seals for me I guess.
miatauser123 is offline   Reply With Quote
Old 08-02-2011, 11:26 PM   #28
Elite Member
iTrader: (2)
 
Join Date: Jan 2007
Location: Los Angeles, CA
Posts: 8,782
Total Cats: 119
Default

Quote:
Originally Posted by Dem768 View Post
So I took off my intake pipe and connected my tester coupler... Blew 100% of 20lbs out the back of my turbo. New seals for me I guess.
Huh???? What is the back of the turbo?
Faeflora is offline   Reply With Quote
Old 08-02-2011, 11:51 PM   #29
Senior Member
Thread Starter
iTrader: (7)
 
Join Date: Sep 2009
Location: Royal Oak Michigan
Posts: 756
Total Cats: 67
Default

Quote:
Originally Posted by Faeflora View Post
Huh???? What is the back of the turbo?
Well what seems to be the 'back'. The back of the cold side is where it seems like it's coming from, between the cold and hot side. I couldn't tell where exactly it's coming from but its blowing out freely. The regulator was set to 20 and it built no pressure. Cranked it up and still nothing. What seal or seals am I going to need?
miatauser123 is offline   Reply With Quote
Old 08-03-2011, 12:04 AM   #30
Elite Member
iTrader: (2)
 
Join Date: Jan 2007
Location: Los Angeles, CA
Posts: 8,782
Total Cats: 119
Default

Quote:
Originally Posted by Dem768 View Post
Well what seems to be the 'back'. The back of the cold side is where it seems like it's coming from, between the cold and hot side. I couldn't tell where exactly it's coming from but its blowing out freely. The regulator was set to 20 and it built no pressure. Cranked it up and still nothing. What seal or seals am I going to need?
The back of the compressor housing? You mean where the housing bolts onto the CHRA?
Faeflora is offline   Reply With Quote
Old 08-03-2011, 12:09 AM   #31
Senior Member
Thread Starter
iTrader: (7)
 
Join Date: Sep 2009
Location: Royal Oak Michigan
Posts: 756
Total Cats: 67
Default

Yes. That's where it sounds like it's coming from.
miatauser123 is offline   Reply With Quote
Old 08-03-2011, 01:31 AM   #32
Elite Member
 
Join Date: Jul 2005
Posts: 6,454
Total Cats: 80
Default

Busted (large) O-ring or cocked compressor housing.
JasonC SBB is offline   Reply With Quote
Old 08-03-2011, 01:54 AM   #33
Elite Member
iTrader: (2)
 
Join Date: Jan 2007
Location: Los Angeles, CA
Posts: 8,782
Total Cats: 119
Default

Easy fix. Red RTV it.

Amazon Amazon
Faeflora is offline   Reply With Quote
Old 08-03-2011, 03:47 AM   #34
Supporting Vendor
iTrader: (31)
 
Savington's Avatar
 
Join Date: Nov 2006
Location: Sunnyvale, CA
Posts: 14,353
Total Cats: 1,319
Default

Quote:
Originally Posted by Faeflora View Post
:hust ler:

Get a new o-ring, don't listen to a word Sir Sawzall over there says.
Savington is offline   Reply With Quote
Old 08-03-2011, 05:24 AM   #35
Senior Member
Thread Starter
iTrader: (7)
 
Join Date: Sep 2009
Location: Royal Oak Michigan
Posts: 756
Total Cats: 67
Default

O ring ordered. I've been looking for a good time to get my heat shields ceramic coated and my header wire wheeled anyways. I'm glad it's nothing big though. Can I replace this without unbolting everything?

Any reason this might have happened? This setup doesn't even have 4k on it. Unfortunately I've recently been tuning for this unmetered air.. Bust, but I'm looking forward to the spooling

As for the RTV. I appreciate the quick fix suggestion, but I've seen your build thread my friend Advice taken with a grain of salt.
miatauser123 is offline   Reply With Quote
Old 08-03-2011, 01:04 PM   #36
Senior Member
Thread Starter
iTrader: (7)
 
Join Date: Sep 2009
Location: Royal Oak Michigan
Posts: 756
Total Cats: 67
Default

Update: Yes, the turbo is leaking all of the air out of it, no that's not a problem?

I contacted my distributor for Garrett and he said that's normal, and it's likely not my issue. The GT28 does not even have a gasket. He told me to double check my waste gate preload, so I'll give that a shot.

Faeflora - In your defense, you can indeed use RTV to seal the turbo, but it's not necessary. Although, if you were under the impression that the turbo DID have a gasket, you're still ghetto for trying to use RTV in it's place

When I unplug my boost controller and leave it open, the car will boost to 10LBS... When I plug my line directly to the WG, i boost to 5LBS. Is this normal?

Last edited by miatauser123; 08-03-2011 at 03:52 PM.
miatauser123 is offline   Reply With Quote
Old 08-03-2011, 04:11 PM   #37
Elite Member
iTrader: (8)
 
Join Date: Dec 2008
Location: Kingston, Ontario
Posts: 2,791
Total Cats: 71
Default

my turbo did this a week before it stopped boosting completely...

check the shaft play.

then check leakdown of all of the charge pipes, exhaust leaks and intake manifold leaks.

my bet is on intake manifold leak based on the fact that to change injectors you need to pull the upper plenum.
shlammed is offline   Reply With Quote
Old 08-03-2011, 05:15 PM   #38
Senior Member
Thread Starter
iTrader: (7)
 
Join Date: Sep 2009
Location: Royal Oak Michigan
Posts: 756
Total Cats: 67
Default

Quote:
Originally Posted by shlammed View Post
my turbo did this a week before it stopped boosting completely...

check the shaft play.

then check leakdown of all of the charge pipes, exhaust leaks and intake manifold leaks.

my bet is on intake manifold leak based on the fact that to change injectors you need to pull the upper plenum.
What caused it? What turbo do or did you have at the time? What did you do to fix it? My shaft play in and out was pretty minimal/normal. Up and down was zero.
miatauser123 is offline   Reply With Quote
Old 08-03-2011, 05:36 PM   #39
Elite Member
iTrader: (2)
 
Join Date: Jan 2007
Location: Los Angeles, CA
Posts: 8,782
Total Cats: 119
Default

Quote:
Originally Posted by Dem768 View Post
Update: Yes, the turbo is leaking all of the air out of it, no that's not a problem?

I contacted my distributor for Garrett and he said that's normal, and it's likely not my issue. The GT28 does not even have a gasket. He told me to double check my waste gate preload, so I'll give that a shot.

When I unplug my boost controller and leave it open, the car will boost to 10LBS... When I plug my line directly to the WG, i boost to 5LBS. Is this normal?


What the fuckign hell?

WHERE THE **** IS THE AIR COMING OUT OF THE TURBO. THERE ARE A BUNCH OF PLACES IT COULD BE LEAKING FROM. CLARIFY BITCH!!

PINPOINT THE LOCATION BY FELCHING THE SANTORUM OUT OF YOUR GAY LVOERS *** (NOT THAT THERE'S ANYTHING WRONG WITH BEING GAY) AND SMEARING IT ALL OVER THE TURBO. THEN PRESSURESIZE THE ****.

TAKE A PICTURE WITH YOUR FAT FINGER POINTING TO WHERE THE LEAK IS COMING FROM YOU CUNTMONKEY.
Faeflora is offline   Reply With Quote
Old 08-03-2011, 06:11 PM   #40
Senior Member
Thread Starter
iTrader: (7)
 
Join Date: Sep 2009
Location: Royal Oak Michigan
Posts: 756
Total Cats: 67
Default

This has been clarified. To the best of my knowledge it's leaking between the compressor housing and the CHRA. The same place that an O Ring, or a Gasket would go if the turbo was intended to have one. Ps. getmadplease.
miatauser123 is offline   Reply With Quote
 
 
Reply

Related Topics
Thread Thread Starter Forum Replies Last Post
Raleigh: Fiberglass headlight scope, 1.6L ECU, AFM, Hardtop latches, more bigmackloud Miata parts for sale/trade 13 09-22-2017 01:34 PM
1991 special edition with hard top full part out JC, NJ russian Miata parts for sale/trade 6 10-08-2015 04:01 PM
Expected intake temps on the track? tazswing Race Prep 20 10-03-2015 12:04 PM
Low oil pressure after 1.8 swap and new turbo setup JesseTheNoob DIY Turbo Discussion 15 09-30-2015 03:44 PM
3rd Time's a Charm...hopefully. zephyrusaurai Meet and Greet 2 09-28-2015 11:59 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 10:40 PM.