Questions for Justin...

[Archer Fabrications]

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compressor bearing

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Turbine bearing

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Am i cool to scrub all the outside with steel wool and not really worry if anything gets inside since i plan to flush it with break clean? Or while I'm cleaning the outsde is it best to plug the shaft holes.

 

[JusMX141]

Clean whatever you wish- I start out with a solvent-based wash then finish it off with soap and water then blow dry before paint and reassembly.

 

[Archer Fabrications]

What sort of paint? Vht ? Solvents like mineral spirits ? Acetone is doing nothing

 

[Archer Fabrications]

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Before

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After

CLR seems to be pretty decent at getting rust away but left a slight haze. Re washed it and rubbed some fresh oil on the bearing races.

 

[Archer Fabrications]

Would i be able to use 2000 grit wet sand paper on the bearing races to get them new lookin? I see a few small scuffs

 

[JusMX141]

Whatever works- I prefer 3M Scotchbrite.

 

[Archer Fabrications]

I just dont wanna accidently #### it up .. I can do this to the turbine shaft too?

 

[Viper588]

I am going to be installing a used 14b set up in the near future and i came across this post by you

"Most of the guys who have trouble with blowing oil past seals are either using too much RTV like the example I've shown above (which cuts the oil's ability to drain by as much as 33% of what it should be), or they are installing an already well-used, 100K+ mile 14B that was taken from a 1G (fed from the head) and putting it on their 2G then feeding it from an oil supply source with roughly three times as much pressure as the turbo has seen it's entire life. Guess what the result is? "

Is it recommended to supply it from the head then? Thanks!

 

[slow4dr]

The company I work for has banjo fittings made by a local shop. We use them for braided brake lines but they can drill the outlet to whatever size I need. In essence killing two birds with one stone so I won't have to find a proper restrictor plus a fitting to connect the hose. Any potential problems with this train of thought?

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[JusMX141]

I am going to be installing a used 14b set up in the near future and i came across this post by you

Is it recommended to supply it from the head then? Thanks!

That's where Mitsubishi put it from the factory, so apparently.

Only time you should consider moving it to the filter housing is if you're doing a max-power situation where you're pushing the 14B past 20psi or so. If you do feed from the filter housing, you must use a restrictor.

Any potential problems with this train of thought?

None other than you can't check pressure post-restrictor.

This isn't really a new concept as noted here by the factory Subaru oil feed banjo:

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[okm12346]

Justin, I have a quick question for you. I know of the Holset threads, but I need a straight answer form you.

I have this straight restrictor with 1.5mm hole on my HX-35. IS this enough or should I drill it out to a bit larger.

It's 2.4L, no balance shafts and no squirters, ported oil relieve valve, fed from oil filter housing with 4an line, 12an drain.

 

[Archer Fabrications]

Personally wouldent run restrictor with the -12AN I'm not and have been great

 

[JusMX141]

There is no blanket restrictor spec that works for all cars. You must know your oil pressure before selecting a restrictor as you may not need one at all....especially with a drain that large.

 

[okm12346]

Its a brand new motor and it has never had a turbo installed on it before this. Its a car that I recently acquired and I do one thing at the time (slow build) so no gauges yet. I just want to be able to start it and drive it a couple of miles.

 

[lil corb]

Hey Justin, how normal is it to have compressor surge on evo3 16g with a dejonpowerhouse 3" intake tapering to 2.75" compressor inlet? I am trying to pinpoint my choppy evo 8 maf sensor during my afratioest to wideband calibration and compressor surge could be an explanation. It just started after installing my ets street kit.

 

[JusMX141]

It's possible depending what boost level you're running. Are you talking full-throttle surge or a little surge at the onset of boost?

 

[lil corb]

It's possible depending what boost level you're running. Are you talking full-throttle surge or a little surge at the onset of boost?

19psi, full throttle only. When I go wot around 2000rpms the maf raw hrtz gets choppy then also around 600hz it starts until 1000hz. Its making the car buck and hesistant when it happens and according to my log that's when the maf raw hz gets choppy. Wondering if it could be surge?

Thanks

 

[Zufelt]

Hey Justin, looking at a 16g with slight shaft play on Craig's list, the guy only wants 75 bucks which makes me worry, I'm getting pictures of the compressor wheel but are there any ways to identify it as an eBay 16g? Also I thought I saw on another thread that you rebuild turbos. If it was indeed a 16g what would the cost of rebuilding it be roughly? Thanks! Gotta love this thread haha
Trying to get a picture of the compressor wheel..
Here is the housing.. Almost looks like a crack at the bottom?.. Maybe I'm going crazy.

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Might be up getting this, just to be reassured.. Also, when storing a turbo it should be stored just as if it was on the car right?
http://www.dsmtuners.com/classifieds/4g63-dsm-parts-for-sale-1/practically-new-small-16g-60028/

 

[JusMX141]

19psi, full throttle only. When I go wot around 2000rpms the maf raw hrtz gets choppy then also around 600hz it starts until 1000hz. Its making the car buck and hesistant when it happens and according to my log that's when the maf raw hz gets choppy. Wondering if it could be surge?

Thanks

That's unusual to happen at such a low boost level. I mean I find it hard to believe that at 19psi your turbo is making more airflow than the engine can handle. I'd check for restrictions in the intake and exhaust system first, possibly do a boost leak test.

Hey Justin, looking at a 16g with slight shaft play on Craig's list, the guy only wants 75 bucks which makes me worry, I'm getting pictures of the compressor wheel but are there any ways to identify it as an eBay 16g? Also I thought I saw on another thread that you rebuild turbos. If it was indeed a 16g what would the cost of rebuilding it be roughly? Thanks! Gotta love this thread haha
Trying to get a picture of the compressor wheel..
Here is the housing.. Almost looks like a crack at the bottom?.. Maybe I'm going crazy.

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That's a MHI Small 16G for sure. Great deal.

Might be up getting this, just to be reassured.. Also, when storing a turbo it should be stored just as if it was on the car right?
Practically new Small 16g - DSM Classifieds

If you get the $75 Craigslist turbo I can service it from the ground up and you'll spend less than you would on that example and have the exact same thing when it's all said and done.

 

[tin_tin13]

Justin quick question at what psi or pressure ratio does a small 16g run out of steam or efficiency? I'm turbo setup consist of a Hahn 16g in a t3 8cm housing with 3in vband outlet mated on erl manifold on my 2.4l

 

[Zufelt]

That's unusual to happen at such a low boost level. I mean I find it hard to believe that at 19psi your turbo is making more airflow than the engine can handle. I'd check for restrictions in the intake and exhaust system first, possibly do a boost leak test.


That's a MHI Small 16G for sure. Great deal.

If you get the $75 Craigslist turbo I can service it from the ground up and you'll spend less than you would on that example and have the exact same thing when it's all said and done.

Maybe you should pm me about it then with a price I'm jut worried about how it was stored.. Ground up sounds nice haha.. Let me know what parts/price man. Shoot me a PM and ill toss back a number if it makes it easier for you.

 

[JusMX141]

Justin quick question at what psi or pressure ratio does a small 16g run out of steam or efficiency? I'm turbo setup consist of a Hahn 16g in a t3 8cm housing with 3in vband outlet mated on erl manifold on my 2.4l

Couldn't possibly begin to guess as every setup's different. If I had to throw a number out I'd say in the 20-22psi range, but a super-efficient intercooler or a turbine housing which reduces backpressure can both extend the map a little by lowering IAT's and EGT's.

 

[Archer Fabrications]

Whats that answer for daves hx40

 

[JusMX141]

Pardon?

 

[Archer Fabrications]

The efficiency of daves hx40 i know you were seeing 70lb a min at 38 but curious where the airflow wall is.

On a seperate note my new manifold puts my turbo alot lower then my DNP I'm sort of worried the transition of my oil drain is too horizontal now what do you think, it used to be a 60* off the pan and a 45* off the turbo but i think i can make it work if it's 60* off the turbo 45* off the pan. But i dont know if it's up to spec, doesnt seem steep enough to me and i have no clue in hell how I'm going to transition it better, the turbo is clocked 90* at the drain and feed. So pretty square straight

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