Miatapower List Archive

This read-only message was archived from a public mail list.
Mail From: "Lee Bohon" <(email redacted)>

This may seem like a dumb question, but I'll through this out there
anyway for those that have more experience. I'm helping Jim Sawyer w/
his newly acquired '94 w/ a ADFX turbo setup. We're removing several
parts to go through a few things, replace some broken items (motor
mounts, rusted nuts/bolts, suspect gaskets, exhaust leaks, etc.) and to
really just get familiar with a car he's owned for only a few weeks.
Yesterday we removed the turbo. I noticed that if I try to spin the
turbine wheel with my finger, it moves smoothly. but there is a bit of
resistance; at least there is definitely more resistance in my T28 from
my FM3 system. FWIW, I'm 99% sure Jim's turbo is a T3/T04.

Here's the dumb question. does this seem normal or should we send it off
to be inspected/rebuilt? The car was running *ok* before (running w/ a
Link ECU, but no boost assist at the moment. full boost [14psi] wasn't
reached until about 4500rpm). However, we're wanting to improve on the
spool-up time and hopefully lower the threshold by several hundred rpm
by going through a few things and getting the boost control parameters
setup properly. The free-spin resistance I noticed yesterday had me
wondering if that was normal. Thoughts?

Lee Bohon

This read-only message was archived from a public mail list.
Mail From: "Robert Mangas" <(email redacted)>


If what you mean by 'resistance' is seen as a relatively quick slowing of
the wheel after a finger spin I think that's normal. My BBB did that when I
had it out in the spring, and several OEM turbos that I performed the same
test on recently were also that way.

$0.02,
Robert

>From: "Lee Bohon" <(email redacted)>
>To: "Miatapower" <(email redacted)>
>Subject: Turbine wheel resistance
>Date: Tue, 5 Aug 2003 08:23:52 -0400
>
>This may seem like a dumb question, but I'll through this out there
>anyway for those that have more experience. I'm helping Jim Sawyer w/
>his newly acquired '94 w/ a ADFX turbo setup. We're removing several
>parts to go through a few things, replace some broken items (motor
>mounts, rusted nuts/bolts, suspect gaskets, exhaust leaks, etc.) and to
>really just get familiar with a car he's owned for only a few weeks.
>Yesterday we removed the turbo. I noticed that if I try to spin the
>turbine wheel with my finger, it moves smoothly. but there is a bit of
>resistance; at least there is definitely more resistance in my T28 from
>my FM3 system. FWIW, I'm 99% sure Jim's turbo is a T3/T04.
>
>Here's the dumb question. does this seem normal or should we send it off
>to be inspected/rebuilt? The car was running *ok* before (running w/ a
>Link ECU, but no boost assist at the moment. full boost [14psi] wasn't
>reached until about 4500rpm). However, we're wanting to improve on the
>spool-up time and hopefully lower the threshold by several hundred rpm
>by going through a few things and getting the boost control parameters
>setup properly. The free-spin resistance I noticed yesterday had me
>wondering if that was normal. Thoughts?
>
>Lee Bohon
>

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This read-only message was archived from a public mail list.
Mail From: "Lee Bohon" <(email redacted)>

My initial note was a little misleading. My turbo spins free; Jim's has mo=
re resistance. If I try to spin the wheel on Jim's turbo, it will certain =
turn, but it comes to a halt very fast (as in as soon as my finger lets go =
of spinning it). On my turbo, I can give it a spin and it continues to spi=
n for several seconds.

It's probably normal but I thought I'd get some feedback. I'm not sure if =
Jim's is a BB or sleeve, but I think it's a sleeve bearing.

Thanks,
Lee


----- Original Message -----
From: Robert Mangas
Sent: 8/5/2003 8:46:19 AM
To: (email redacted);(email redacted)
Subject: Re: Turbine wheel resistance

>=20
> If what you mean by 'resistance' is seen as a relatively quick slowing=
of=20
> the wheel after a finger spin I think that's normal. My BBB did that whe=
n I=20
> had it out in the spring, and several OEM turbos that I performed the sam=
e=20
> test on recently were also that way.
>=20
> $0.02,
> Robert
>=20
> >From: "Lee Bohon" <(email redacted)>
> >To: "Miatapower" <(email redacted)>
> >Subject: Turbine wheel resistance
> >Date: Tue, 5 Aug 2003 08:23:52 -0400
> >
> >This may seem like a dumb question, but I'll through this out there
> >anyway for those that have more experience. I'm helping Jim Sawyer w/
> >his newly acquired '94 w/ a ADFX turbo setup. We're removing several
> >parts to go through a few things, replace some broken items (motor
> >mounts, rusted nuts/bolts, suspect gaskets, exhaust leaks, etc.) and to
> >really just get familiar with a car he's owned for only a few weeks.
> >Yesterday we removed the turbo. I noticed that if I try to spin the
> >turbine wheel with my finger, it moves smoothly. but there is a bit of
> >resistance; at least there is definitely more resistance in my T28 from
> >my FM3 system. FWIW, I'm 99% sure Jim's turbo is a T3/T04.
> >
> >Here's the dumb question. does this seem normal or should we send it off
> >to be inspected/rebuilt? The car was running *ok* before (running w/ a
> >Link ECU, but no boost assist at the moment. full boost [14psi] wasn't
> >reached until about 4500rpm). However, we're wanting to improve on the
> >spool-up time and hopefully lower the threshold by several hundred rpm
> >by going through a few things and getting the boost control parameters
> >setup properly. The free-spin resistance I noticed yesterday had me
> >wondering if that was normal. Thoughts?
> >
> >Lee Bohon
> >
>=20
> _________________________________________________________________
> Help STOP SPAM with the new MSN 8 and get 2 months FREE*=20=20
> join.msn.com/?page=3Dfeatures/junkmail
>=20
>=20

This read-only message was archived from a public mail list.
Mail From: "Ackley, Ray (R.A.)" <(email redacted)>

My BBB T28 with 5k on it spun for about a whole revolution when it was off
the car. This is with a real quick flick from my finger - basically getting
it to spin as fast as I could and then watching how far it went. It had
been without oil sitting in a garage for about a year. Once it was on my
car and all lubed up it would spin quickly for a good 4-5 seconds with the
same flick. However, I don't think sleeve bearing turbos spin as freely.

Ray

-----Original Message-----
From: Lee Bohon [mailto:(email redacted)]
Sent: Tuesday, August 05, 2003 9:20 AM
To: (email redacted); Robert Mangas
Subject: Re: Re: Turbine wheel resistance


My initial note was a little misleading. My turbo spins free; Jim's has
more resistance. If I try to spin the wheel on Jim's turbo, it will certain
turn, but it comes to a halt very fast (as in as soon as my finger lets go
of spinning it). On my turbo, I can give it a spin and it continues to spin
for several seconds.

It's probably normal but I thought I'd get some feedback. I'm not sure if
Jim's is a BB or sleeve, but I think it's a sleeve bearing.

Thanks,
Lee


----- Original Message -----
From: Robert Mangas
Sent: 8/5/2003 8:46:19 AM
To: (email redacted);(email redacted)
Subject: Re: Turbine wheel resistance

>
> If what you mean by 'resistance' is seen as a relatively quick
> slowing of
> the wheel after a finger spin I think that's normal. My BBB did that when
I
> had it out in the spring, and several OEM turbos that I performed the same

> test on recently were also that way.
>
> $0.02,
> Robert
>
> >From: "Lee Bohon" <(email redacted)>
> >To: "Miatapower" <(email redacted)>
> >Subject: Turbine wheel resistance
> >Date: Tue, 5 Aug 2003 08:23:52 -0400
> >
> >This may seem like a dumb question, but I'll through this out there
> >anyway for those that have more experience. I'm helping Jim Sawyer
> >w/ his newly acquired '94 w/ a ADFX turbo setup. We're removing
> >several parts to go through a few things, replace some broken items
> >(motor mounts, rusted nuts/bolts, suspect gaskets, exhaust leaks,
> >etc.) and to really just get familiar with a car he's owned for only
> >a few weeks. Yesterday we removed the turbo. I noticed that if I try
> >to spin the turbine wheel with my finger, it moves smoothly. but
> >there is a bit of resistance; at least there is definitely more
> >resistance in my T28 from my FM3 system. FWIW, I'm 99% sure Jim's
> >turbo is a T3/T04.
> >
> >Here's the dumb question. does this seem normal or should we send it
> >off to be inspected/rebuilt? The car was running *ok* before
> >(running w/ a Link ECU, but no boost assist at the moment. full boost
> >[14psi] wasn't reached until about 4500rpm). However, we're wanting
> >to improve on the spool-up time and hopefully lower the threshold by
> >several hundred rpm by going through a few things and getting the
> >boost control parameters setup properly. The free-spin resistance I
> >noticed yesterday had me wondering if that was normal. Thoughts?
> >
> >Lee Bohon
> >
>
> _________________________________________________________________
> Help STOP SPAM with the new MSN 8 and get 2 months FREE*
> join.msn.com/?page=features/junkmail
>
>

This read-only message was archived from a public mail list.
Mail From: "Chuck Wills" <(email redacted)>

ADFX does use a sleeve bearing turbo. I'll have a new one from them in
my hands on Friday - I'll let you know how it spins.

-Chuck

-----Original Message-----
From: Lee Bohon [mailto:(email redacted)]
Sent: Tuesday, August 05, 2003 8:20 AM
To: (email redacted); Robert Mangas
Subject: Re: Re: Turbine wheel resistance


My initial note was a little misleading. My turbo spins free; Jim's has
more resistance. If I try to spin the wheel on Jim's turbo, it will
certain turn, but it comes to a halt very fast (as in as soon as my
finger lets go of spinning it). On my turbo, I can give it a spin and
it continues to spin for several seconds.

It's probably normal but I thought I'd get some feedback. I'm not sure
if Jim's is a BB or sleeve, but I think it's a sleeve bearing.

Thanks,
Lee


----- Original Message -----
From: Robert Mangas
Sent: 8/5/2003 8:46:19 AM
To: (email redacted);(email redacted)
Subject: Re: Turbine wheel resistance

>
> If what you mean by 'resistance' is seen as a relatively quick
> slowing of
> the wheel after a finger spin I think that's normal. My BBB did that
when I
> had it out in the spring, and several OEM turbos that I performed the
same
> test on recently were also that way.
>
> $0.02,
> Robert
>
> >From: "Lee Bohon" <(email redacted)>
> >To: "Miatapower" <(email redacted)>
> >Subject: Turbine wheel resistance
> >Date: Tue, 5 Aug 2003 08:23:52 -0400
> >
> >This may seem like a dumb question, but I'll through this out there
> >anyway for those that have more experience. I'm helping Jim Sawyer
> >w/ his newly acquired '94 w/ a ADFX turbo setup. We're removing
> >several parts to go through a few things, replace some broken items
> >(motor mounts, rusted nuts/bolts, suspect gaskets, exhaust leaks,
> >etc.) and to really just get familiar with a car he's owned for only
> >a few weeks. Yesterday we removed the turbo. I noticed that if I try

> >to spin the turbine wheel with my finger, it moves smoothly. but
> >there is a bit of resistance; at least there is definitely more
> >resistance in my T28 from my FM3 system. FWIW, I'm 99% sure Jim's
> >turbo is a T3/T04.
> >
> >Here's the dumb question. does this seem normal or should we send it
> >off to be inspected/rebuilt? The car was running *ok* before
> >(running w/ a Link ECU, but no boost assist at the moment. full boost

> >[14psi] wasn't reached until about 4500rpm). However, we're wanting
> >to improve on the spool-up time and hopefully lower the threshold by
> >several hundred rpm by going through a few things and getting the
> >boost control parameters setup properly. The free-spin resistance I
> >noticed yesterday had me wondering if that was normal. Thoughts?
> >
> >Lee Bohon
> >
>
> _________________________________________________________________
> Help STOP SPAM with the new MSN 8 and get 2 months FREE*
> join.msn.com/?page=features/junkmail
>
>

This read-only message was archived from a public mail list.
Mail From: Pololo Pololo <(email redacted)>

Hi everybody,

Just wanted to introduce myself. My name is Carlos
Bonilla and I just became a member. :)

I have a 1990 Miata with a few mods... but still NA...
and always looking for more power... :)

Just purchased the following:

Used Greddy T04H
Used Greddy IC
2.5 full exhaust (DP - tip)
Used Link (boost solenoid, knock sensor, keypad and
serial connector)
Vishnu Fuel rail with 450cc and ballast resistors.
Oil Moss IC

I am going to start installing this little by little.
It's my daily driver and I want to produce reliable
power... I am not looking for 300+ RWHP...

I am just looking for something enough that I could be
happy with... 8, 10 even 12 psi will be more than
enough... since I am not planning on "building" the
motor...

Any advice here?
What steps should I take?
What about tuning?

I live in San Jose, CA so anybody local here?? :)

Thanks a lot!!

Carlos and "pololo" (1990 Miata)



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This read-only message was archived from a public mail list.
Mail From: Chris Robertson <(email redacted)>

Normal. Not turning at all would be a concern. Also look for
excessive shaft play or blade end damage.

--- Lee Bohon <(email redacted)> wrote:
...<snip>
> Here's the dumb question. does this seem normal or should we send it
> off
> to be inspected/rebuilt? <snip>

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This read-only message was archived from a public mail list.
Mail From: "Lee Bohon" <(email redacted)>

Thanks to everyone that responded. Looks like it's not really worth
worrying about.

Lee

-----Original Message-----
From: Chris Robertson [mailto:(email redacted)]
Sent: Tuesday, August 05, 2003 5:07 PM
To: Lee Bohon; Miatapower
Subject: Re: Turbine wheel resistance

Normal. Not turning at all would be a concern. Also look for
excessive shaft play or blade end damage.

--- Lee Bohon <(email redacted)> wrote:
...<snip>
> Here's the dumb question. does this seem normal or should we send it
> off
> to be inspected/rebuilt? <snip>

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