Nothing to see here, just project Sisyphus, move along - Page 100 - Miata Turbo Forum -Boost cars, acquire cats.

Welcome to Miataturbo.net   Members
 


Build Threads Building a motor? Post the progress here.

Reply
 
 
 
LinkBack Thread Tools Search this Thread
Old 09-14-2015, 09:02 PM   #1981
Murderator
iTrader: (76)
 
18psi's Avatar
 
Join Date: Apr 2008
Posts: 33,396
Total Cats: 2,032
Default

So there seems to be a serious problem with this EFR turbine housing.

Video incoming soon
18psi is offline   Reply With Quote
Old 09-14-2015, 09:16 PM   #1982
Senior Member
iTrader: (1)
 
Join Date: Mar 2010
Location: Bay Area, CA
Posts: 647
Total Cats: 107
Default

That popping sound you just heard? That was G's brain exploding...

In 4 vid :(
gesso is offline   Reply With Quote
Old 09-14-2015, 09:25 PM   #1983
SadFab Sales Lady
iTrader: (5)
 
aidandj's Avatar
 
Join Date: Apr 2014
Location: Beaverton, USA
Posts: 15,179
Total Cats: 973
Default

Is it missing the turbine?
aidandj is offline   Reply With Quote
Old 09-14-2015, 09:31 PM   #1984
Senior Member
iTrader: (1)
 
Join Date: Mar 2010
Location: Bay Area, CA
Posts: 647
Total Cats: 107
Default

Quote:
Originally Posted by aidandj View Post
Is it missing the turbine?
It had the turbine when I last looked in it...
gesso is offline   Reply With Quote
Old 09-14-2015, 09:32 PM   #1985
Murderator
iTrader: (76)
 
18psi's Avatar
 
Join Date: Apr 2008
Posts: 33,396
Total Cats: 2,032
Default

turbine is fine. wg flapper on the other hand.........
18psi is offline   Reply With Quote
Old 09-14-2015, 10:52 PM   #1986
Hug Life
iTrader: (3)
 
Monk's Avatar
 
Join Date: Apr 2014
Location: Huntington, Indiana
Posts: 2,451
Total Cats: 359
Default

Totally in keeping with this thread.

G breaks all the least likely things when you least expect it.
Monk is offline   Reply With Quote
Old 09-14-2015, 10:58 PM   #1987
Destroyer of Inconel
Thread Starter
iTrader: (37)
 
EO2K's Avatar
 
Join Date: Apr 2010
Location: In ur driveway, abusin' ur WPA
Posts: 8,876
Total Cats: 774
Default

Do you SEE? This. This is my existence.

Oh yeah, I forgot to mention, the car is at 18psi's house where he is rapidly learning that the emperor has no clothes.

My boundless optimism and general turbo noobishness prevented me from identifying the rattle and it sounds like its about 1,000x worse than I could have expected. Its not dead turbo but it certainly does not sound positive. 18's far more experienced eye is going to get some documentation tonight and we'll see where to go from there.

My money is on the cancer aids Borg Warner EFR 6258 T25 IWG turbine housing (index THAT google!) being far less of a joke than we first thought.
EO2K is offline   Reply With Quote
Old 09-14-2015, 11:46 PM   #1988
Murderator
iTrader: (76)
 
18psi's Avatar
 
Join Date: Apr 2008
Posts: 33,396
Total Cats: 2,032
Default

lolz, it's not all that bad. Just has issues, like with the tune having random stuff all messed up from the firmware musical chairs, and then the below.

You're really gonna appreciate this: the car has VTAK.
I am not even a little bit kidding

Basically n/a power all the way to about 6, then VTAK hits with the hammer of thor, and the car lurches forward like a civic can only dream

Demonstration:


So as we've already discused, the problem is the WG/Turbine housing. It's defective.

vid

*edit: picture


It basically opens like 20%, gets stuck. and then stays open, won't close, and won't open further unless you tap it as I've done in the vid.

For the ONE pull that it was closed from the start, the car pulled REAL good lol
Attached Thumbnails
Nothing to see here, just project Sisyphus, move along-efailr.png   Nothing to see here, just project Sisyphus, move along-efailr.png   Nothing to see here, just project Sisyphus, move along-20150914_192742.jpg  

Last edited by 18psi; 09-15-2015 at 12:05 AM.
18psi is offline   Reply With Quote
Old 09-15-2015, 12:05 AM   #1989
Destroyer of Inconel
Thread Starter
iTrader: (37)
 
EO2K's Avatar
 
Join Date: Apr 2010
Location: In ur driveway, abusin' ur WPA
Posts: 8,876
Total Cats: 774
Default

Quote:
Originally Posted by 18psi View Post
Basically n/a power all the way to about 6, then VTAK hits with the hammer of thor, and the car lurches forward like a civic can only dream
O lawd...

Quote:
Originally Posted by 18psi View Post
So as we've already discused, the problem is the WG/Turbine housing. It's defective.

It basically opens like 20%, gets stuck. and then stays open, won't close, and won't open further unless you tap it as I've done in the vid.
Is it a possibility that I'm ritarded and I have the wastegate installed at some terrible angle?

Quote:
Originally Posted by 18psi View Post
For the ONE pull that it was closed from the start, the car pulled REAL good lol
See? I got that one pull with the ridiculous response and then couldn't repeat it. I feel slightly vindicated?

Does anyone with more EFR experience have something to chime in here? FAB, are you still awake this evening? I'm about to start tagging EFR bros up in here.
EO2K is offline   Reply With Quote
Old 09-15-2015, 01:47 AM   #1990
Senior Member
 
Join Date: Dec 2004
Location: Brisbane, Australia
Posts: 1,270
Total Cats: 32
Default

I can do a datalog of mine if you want to compare?

There's not much more than about 30% TPS very often though because it just results in wheelspin.

I can't seem to get much less boost than about 1 bar even with very little preload on the gate.
timk is offline   Reply With Quote
Old 09-15-2015, 10:19 AM   #1991
Murderator
iTrader: (76)
 
18psi's Avatar
 
Join Date: Apr 2008
Posts: 33,396
Total Cats: 2,032
Default

There's nothing to compare lol, his makes no boost til almost redline.

Quote:
Originally Posted by EO2K View Post
O lawd...
Is it a possibility that I'm ritarded and I have the wastegate installed at some terrible angle?
It didn't look like it, but I will triple check it after work today. I didn't see anything binding or stuck on the outside. It appears to be inside.
And yes, "the rattling sound" goes away as soon as you "un-stuck" it and comes back once it get's stuck again, it's the flapper.


On a completely different note:
Did the idle valve test, and it's like 25-50. Does that look awfully small of a range to anyone else? It's the stock IACV on a Skunk2 TB

Last edited by 18psi; 09-15-2015 at 11:05 AM.
18psi is offline   Reply With Quote
Old 09-15-2015, 07:14 PM   #1992
Senior Member
iTrader: (1)
 
Join Date: Mar 2010
Location: Bay Area, CA
Posts: 647
Total Cats: 107
Default

Quote:
Originally Posted by 18psi View Post
"the rattling sound" goes away as soon as you "un-stuck" it and comes back once it get's stuck again, it's the flapper.
Oh that's interesting. My assumption was that the flapper was catching on something. Weird.
gesso is offline   Reply With Quote
Old 09-15-2015, 07:17 PM   #1993
SadFab Sales Lady
iTrader: (5)
 
aidandj's Avatar
 
Join Date: Apr 2014
Location: Beaverton, USA
Posts: 15,179
Total Cats: 973
Default

<p>
Quote:
Originally Posted by 18psi View Post
There's nothing to compare lol, his makes no boost til almost redline. It didn't look like it, but I will triple check it after work today. I didn't see anything binding or stuck on the outside. It appears to be inside. And yes, &quot;the rattling sound&quot; goes away as soon as you &quot;un-stuck&quot; it and comes back once it get's stuck again, it's the flapper. On a completely different note: Did the idle valve test, and it's like 25-50. Does that look awfully small of a range to anyone else? It's the stock IACV on a Skunk2 TB
</p><p>Values sound totally normal to me.</p><p>Has the wastegate actuator been replaced? I know its not likely the problem, but its also the easiest thing to replace, and it would suck to tear this all apart and find out its the actuator.</p>
aidandj is offline   Reply With Quote
Old 09-15-2015, 07:18 PM   #1994
Murderator
iTrader: (76)
 
18psi's Avatar
 
Join Date: Apr 2008
Posts: 33,396
Total Cats: 2,032
Default

it's not the actuator cause the actuator moves in/out fine.

the values are way closer than all stock-iacv NB's I've tuned but that probably doesn't mean anything.
18psi is offline   Reply With Quote
Old 09-15-2015, 07:19 PM   #1995
SadFab Sales Lady
iTrader: (5)
 
aidandj's Avatar
 
Join Date: Apr 2014
Location: Beaverton, USA
Posts: 15,179
Total Cats: 973
Default

<p>I think mine might even be smaller than that. Something about flyback blah blah.</p><p>Just sayin, maybe under boost it does weird stuff.</p>
aidandj is offline   Reply With Quote
Old 09-15-2015, 09:07 PM   #1996
Newb
 
Join Date: Sep 2014
Location: Christchurch, NZ
Posts: 27
Total Cats: 0
Default

Quote:
Originally Posted by 18psi View Post
On a completely different note:
Did the idle valve test, and it's like 25-50. Does that look awfully small of a range to anyone else? It's the stock IACV on a Skunk2 TB
If it helps, the range on mine (01 NB8C) was 18 - 72.
jtsoldier is offline   Reply With Quote
Old 09-15-2015, 09:27 PM   #1997
Destroyer of Inconel
Thread Starter
iTrader: (37)
 
EO2K's Avatar
 
Join Date: Apr 2010
Location: In ur driveway, abusin' ur WPA
Posts: 8,876
Total Cats: 774
Default

Quote:
Originally Posted by gesso View Post
Oh that's interesting. My assumption was that the flapper was catching on something. Weird.
Haha, when we hooked up the bike pump I questioned the angle and I thought you were the one who convinced me that it didn't need that much throw? We were exhausted and had been drinking, please don't interpret this as me pointing fingers, you know that ain't my style

Quote:
Originally Posted by aidandj View Post
Has the wastegate actuator been replaced? I know its not likely the problem, but its also the easiest thing to replace, and it would suck to tear this all apart and find out its the actuator.
It's a brand new Borg Warner "Low" actuator for the 6258. I also have a "Medium" actuator here at the house I could overnight if we thought it would be worth anything.

But I tend to agree with 18, the actuator works and we know it works, plus its the easiest thing in the world to test. Something else in the system is binding, the question is what exactly.

I owe him so many bags of coffee.

Quote:
Originally Posted by 18psi View Post
the values are way closer than all stock-iacv NB's I've tuned but that probably doesn't mean anything.
Quote:
Originally Posted by jtsoldier View Post
If it helps, the range on mine (01 NB8C) was 18 - 72.
Honestly, I think its just the Skunk2 TB. The air path for the idle air bypass is all jacked up with weird passages and steps and crap. It would not surprise me in the least.
EO2K is offline   Reply With Quote
Old 09-15-2015, 09:41 PM   #1998
SadFab Sales Lady
iTrader: (5)
 
aidandj's Avatar
 
Join Date: Apr 2014
Location: Beaverton, USA
Posts: 15,179
Total Cats: 973
Default

You has strong motor right. Wire wastegate shut. Profit.
aidandj is offline   Reply With Quote
Old 09-15-2015, 10:48 PM   #1999
Destroyer of Inconel
Thread Starter
iTrader: (37)
 
EO2K's Avatar
 
Join Date: Apr 2010
Location: In ur driveway, abusin' ur WPA
Posts: 8,876
Total Cats: 774
Default

Then I can use a EWG on the inlet piping to vent excess boost!
EO2K is offline   Reply With Quote
Old 09-15-2015, 10:58 PM   #2000
Junior Member
iTrader: (4)
 
Join Date: May 2012
Location: Mayport, FL
Posts: 474
Total Cats: 33
Default

I saw your PM. There is so much play in that actuator... First I'd try to rotate the CHRA like you talked about in the PM and see if it's still binding but I really think you need to pull the turbo housing and get an inside look.
FrankB is offline   Reply With Quote
 
 
Reply

Related Topics
Thread Thread Starter Forum Replies Last Post
Help me test MS3 firmware! Win stuff! Ben MEGAsquirt 16 01-13-2017 08:56 PM
3d scanned miata parts- interest check asmasm General Miata Chat 32 01-05-2017 10:22 AM
Noob from Arizona, Hi Richard here! Richard346 Meet and Greet 11 12-16-2016 05:48 PM
Move to Florida. Buy Miata vtbandit Meet and Greet 7 12-15-2016 09:33 PM
The Slowest Miata in Tampa Build vtbandit Build Threads 4 12-13-2016 06:08 PM


Tags
begi isn't helping, buttsex, doubt, efr=tits man, failure is an option, iono mang, longing, manifold mastectomy, moist b-hole, offending tits, procrastination, silent but deadly, tartar sauce massage oil, uncertainty, yearning

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 On
Pingbacks are On
Refbacks are On



All times are GMT -4. The time now is 02:40 AM.