Master power turbos, who has used them?
Thread Starter
Joined: Oct 2003
Posts: 5,107
Likes: 50
From: Central Florida
Master power turbos, who has used them?
this is more for personal knowledge so i can weigh out and figure out an issue i ran into tonight. the question is how many people have run these turbos with or without issue and what numbers they put down, time in use and cause of death.
during tuning tonight on a customer's car with a MP T70 w/.69a/r hotside equipped the turbo gave up at only 13PSI while finishing up the tune. the thrust and turbine bearings were destroyed and the turbo only had 2k miles on it. i didn't bother to check the restrictor while reassembling the engine but it had 2k miles on it prior to reassembly so i had no reason to question it but it had never been pushed before and obviously it could have been restricted of lubrication.
the main question i'm asking though is how many have run them successfully and how many have had similar issues with these turbos? i have a brand new one sitting in my shop so it's kind of a personal question as well before i bother with the install on my own car.
edit: and no these are not to be confused with the Chinese made XS power turbos, i have heard good things about Master Power turbos but i am starting to have my doubts after dealing with this issue.
during tuning tonight on a customer's car with a MP T70 w/.69a/r hotside equipped the turbo gave up at only 13PSI while finishing up the tune. the thrust and turbine bearings were destroyed and the turbo only had 2k miles on it. i didn't bother to check the restrictor while reassembling the engine but it had 2k miles on it prior to reassembly so i had no reason to question it but it had never been pushed before and obviously it could have been restricted of lubrication.
the main question i'm asking though is how many have run them successfully and how many have had similar issues with these turbos? i have a brand new one sitting in my shop so it's kind of a personal question as well before i bother with the install on my own car.
edit: and no these are not to be confused with the Chinese made XS power turbos, i have heard good things about Master Power turbos but i am starting to have my doubts after dealing with this issue.
I've been using MP Turbos since Jan 04'. I've never had any problems with mine. Also, what restrictor do you speak of? I've never used any type of oil restrictions on mine. I ran 1 bar on the street for like 2 years.
There is a Toyota Supra that a local shop built using a MasterPower turbo on it that makes a little over 600 HP at the wheels. He has been using the turbo for over 2 years and he runs high 10's in the 1/4. No issues as of yet. Also, a local RX7 ( Time Machines ) on the SE forum runs a MP as well and has run high 9's in the 1/4.
L8R
L8R
.69 good lord what where you guys trying to accomplish? How high your egt's could get? How much back pressure yall could muster? or how fast the turbo could blow? 
j/k but seriously get a bigger hotside. also may have something to do with the restrictor. I have one in mine but my take it out now.
j/k but seriously get a bigger hotside. also may have something to do with the restrictor. I have one in mine but my take it out now.
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Thread Starter
Joined: Oct 2003
Posts: 5,107
Likes: 50
From: Central Florida
running a new turbo with same specs now with no restrictor, guess we will see how it turns out in a few days. the EGTs were only about 1450*F, boost creep is only up to about 13PSI of boost so it isn't being pushed all too hard.
after pulling the turbo off it did have a very small restrictor in the oil feed line, about as small as i would ever attempt putting on a turbo, from the setup the previous builder had put together.
after pulling the turbo off it did have a very small restrictor in the oil feed line, about as small as i would ever attempt putting on a turbo, from the setup the previous builder had put together.
BDC Motorsports
Joined: Jun 2002
Posts: 3,667
Likes: 6
From: Grand Prairie, TX
running a new turbo with same specs now with no restrictor, guess we will see how it turns out in a few days. the EGTs were only about 1450*F, boost creep is only up to about 13PSI of boost so it isn't being pushed all too hard.
after pulling the turbo off it did have a very small restrictor in the oil feed line, about as small as i would ever attempt putting on a turbo, from the setup the previous builder had put together.
after pulling the turbo off it did have a very small restrictor in the oil feed line, about as small as i would ever attempt putting on a turbo, from the setup the previous builder had put together.
B
Thread Starter
Joined: Oct 2003
Posts: 5,107
Likes: 50
From: Central Florida
3-4" post turbine, yes i know it will not pick up what the turbine is seeing but the turbo was digging its grave once i hit 7-8 PSI and that was giving plenty of time to cool down between runs.
just an update as to the OP.
The turbine is running great! It see's full boost(13 PBS) @ 3200 rpm, and the eggs stay strong at about 1500-1600 @ WOT... The final assesment to the original failure was the restrictor... Thaks to all who gave input
The turbine is running great! It see's full boost(13 PBS) @ 3200 rpm, and the eggs stay strong at about 1500-1600 @ WOT... The final assesment to the original failure was the restrictor... Thaks to all who gave input
Senior Member
Joined: May 2005
Posts: 322
Likes: 0
From: Auckland NZ
this is more for personal knowledge so i can weigh out and figure out an issue i ran into tonight. the question is how many people have run these turbos with or without issue and what numbers they put down, time in use and cause of death.
during tuning tonight on a customer's car with a MP T70 w/.69a/r hotside equipped the turbo gave up at only 13PSI while finishing up the tune. the thrust and turbine bearings were destroyed and the turbo only had 2k miles on it. i didn't bother to check the restrictor while reassembling the engine but it had 2k miles on it prior to reassembly so i had no reason to question it but it had never been pushed before and obviously it could have been restricted of lubrication.
the main question i'm asking though is how many have run them successfully and how many have had similar issues with these turbos? i have a brand new one sitting in my shop so it's kind of a personal question as well before i bother with the install on my own car.
edit: and no these are not to be confused with the Chinese made XS power turbos, i have heard good things about Master Power turbos but i am starting to have my doubts after dealing with this issue.
during tuning tonight on a customer's car with a MP T70 w/.69a/r hotside equipped the turbo gave up at only 13PSI while finishing up the tune. the thrust and turbine bearings were destroyed and the turbo only had 2k miles on it. i didn't bother to check the restrictor while reassembling the engine but it had 2k miles on it prior to reassembly so i had no reason to question it but it had never been pushed before and obviously it could have been restricted of lubrication.
the main question i'm asking though is how many have run them successfully and how many have had similar issues with these turbos? i have a brand new one sitting in my shop so it's kind of a personal question as well before i bother with the install on my own car.
edit: and no these are not to be confused with the Chinese made XS power turbos, i have heard good things about Master Power turbos but i am starting to have my doubts after dealing with this issue.
I am Australasian distributor for Masterpower.
The problem will be the restrictor, you shouldn’t be using restrictors on journal bearing turbos, we recommend -4 or ¼” lines unrestricted.
Journal bearing turbos are designed to operate at same oil pressure as engine. i.e. 50-80psi, I have some rotary tune shop customers that actually use -6 lines.
Sometimes I have disgruntled Garrett customers that have experienced same issue as you by running restrictors on there journal bearing turbos.
The .69 shouldn’t be a problem we are running the MP GT37 with .7 divided housings now on some 13b’s with turbines smaller than p trim, for application over 400whp were max response is crucial. ie drifting application
Senior Member
Joined: May 2005
Posts: 322
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From: Auckland NZ
-4 is recommended minimum, so you should be using larger not smaller,
What’s worse is that the -4 fittings are restricted down from 6mm to only 3mm making them already less than recommended standard for medium size journal bearing turbos.
A standard Hitachi turbo is basically a t04 journal bearing core, it uses unrestricted -4 or 6mm ID lines…. with a larger turbo fitted that experiences more bearing load it seem illogical to install with lines that are smaller than stock.
What’s worse is that the -4 fittings are restricted down from 6mm to only 3mm making them already less than recommended standard for medium size journal bearing turbos.
A standard Hitachi turbo is basically a t04 journal bearing core, it uses unrestricted -4 or 6mm ID lines…. with a larger turbo fitted that experiences more bearing load it seem illogical to install with lines that are smaller than stock.
I'm glad this thread came up because I have a restrictor in mine right now but I've never fired it up so thats a damn good thing. I guess the only question I have then is with my old bnr stage IV I had to have a restrictor or I would get oil leaking out of the turbine itself. So after I saw this happen I just assumed any journal bearing tubo would need a restrictor.