Questions for Justin...

[97gst_spyder]

Will oil coking cause slow spool?

 

[JusMX141]

Got a honda kid willing to give me a turbo he got in a trade and wants to get rid of... he says it a T3/T4 T04E ebay turbo with no shaft play.... My question is can you rebuild this thing to fit a DSM hotside with quality parts and make it worth something to run? or just let him keep it and deal with the trouble

Not worth it. A new eBay T04E junker is $88; it's not even worth my time of removing the compressor cover. You'd have $40 in shipping to-and-from my shop alone.

Will oil coking cause slow spool?

Slow spool or no spool, sure. I have about (5) 14B's at my shop right now with shafts that don't even turn as as result of the excessive oil coking behind the heat shield.

 

[bradikus7]

I got my gaskets today. You sure you made them? Lol they are perfect, you haz teh mad skillz.

I do have another question for ya. So I had my Hx35 sitting in a box in the garage with no compressor cover on it for a while. I went to put on the cover that you sold me a while back and there is a bit of surface rust.

Like this but not nearly as bad (not my turbo picture):

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What do you suggest that I do to remove it? Once I get it off and put the compressor cover on it will it do that again if it is just sitting in a box?

 

[JusMX141]

You can clean it with Scotchbrite, possible a Roloc disc on an angle grinder if you're careful not to get into the compressor wheel.

 

[asrdave]

Can you give me specs to compare a t-25 to a fp big28? Inducer and exducer measurements on both turbine and compressor.

 

[delta448]

Can you give me specs to compare a t-25 to a fp big28? Inducer and exducer measurements on both turbine and compressor.

Is FP's "big" T28 different than the regular one?

 

[hurricanecris24]

i have a question what other turbos out there perform the same or similiar to a gt35r??

 

[JusMX141]

Can you give me specs to compare a t-25 to a fp big28? Inducer and exducer measurements on both turbine and compressor.

Look at Zack's link below- I'm not going to re-type everything.

Is FP's "big" T28 different than the regular one?

Bigger turbine I believe; compressor is still the same as any other upgraded T28 for our cars.

i have a question what other turbos out there perform the same or similiar to a gt35r??

Do you mean airflow, lag / spool time, or durability?

 

[hurricanecris24]

airflow for max power

 

[JusMX141]

Bullseye / Borg Warner S362, Holset HX40, and PTE HP6262 come to mind.

 

[JwpRider]

Hey Justin, must bother you help ID this turbo. Sorry for the poor pics, but I can tell you what identifying marking are on this. There is a 'nameplate', says Made in Japan---Garrett, AB 501J, MR187909, 466491-5. On the Turbo casting it has AR .48 M10. On the 02 housing it is casted MR188004. (No TD05 on turbo). The Wastegate # is 430819-283. I have other pics, but will send you two that may be the most useful. (I don't believe it is what it was 'sold as'.) What is it? Thanks again!

 

[JusMX141]

T25- stock 2G turbo. It's worth $50 used; $200ish if freshly-rebuilt.

Your example is from a 2G with a manual tranny- MR187909 (.49 turbine housing). The auto 2G's used part number MR187910 (.45 turbine housing).

 

[JusMX141]

That turbo has more than 12K miles on it.

 

[JwpRider]

Your just full of good news!! Thanks again for your help. This site is sooo great for newbies like me...

 

[hurricanecris24]

this is the only pic i can get from the seller as of now does it look like a gt35r? waiting for more pics and numbers

 

[JusMX141]

It's a knockoff. The square "turbocharger" tag that everyone is afraid of seeing is on the bottom of the pic, just below the compressor inlet.

A Genuine 35R will have a different appearance to the compressor cover- most notably a "step" in the area of the cover where a coupler slides on, and the compressor wheel itself has a "hex" shape to it near the compressor locknut:

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[hurricanecris24]

Alright thank you. I was thinking it was a knockoff just by looking at the cover

 

[mitsuman3000]

ok, got one for you. I've always wondered, why isn't there a bb version of the e316g turbo? Also, what turbo would be even close to this idea? Also, is there any advantage to journal bearing instead of bb other than the price? I know these are probably considered "basic" questions to most, but I had to ask.

 

[JusMX141]

ok, got one for you. I've always wondered, why isn't there a bb version of the e316g turbo?

A few reasons, like:

• You can buy a new Evo III 16G for $500. If it were a ball bearing turbo, it would easily cost $600-$800 more.
  
• Not only would the initial purchase price be higher, but then you'd be faced with an issue if something should happen where the turbo would blow because ball bearing turbos are generally sealed units from the factory that cannot be rebuilt.
  
• Who needs a direct-fit 40 lb/min turbo that spools faster than an Evo III 16G?

Also, what turbo would be even close to this idea?

I guess a Garrett GT2871R would come close, but I don't think a DSM bolt-on turbine housing exists for one of these turbos.

Also, is there any advantage to journal bearing instead of bb other than the price?

Initial purchase price, and service cost.

Ball bearing turbos are wonderful for cars that are regularly maintained, but they're horrible for cars that are daily driven because of their "zero-tolerance" for a dirty oil supply.

A journal bearing turbo can pass a few pieces of contamination through the oil supply and remain fairly unharmed...but a ball bearing turbo will start to lose peak boost and become noisy as the bearings become damaged. The turbo will have no shaft play at all- it just won't boost as it should. This is why I absolutely refuse to buy a used ball bearing turbo unless it's a really good price...because aside from visual wheel damage, you have absolutely no way of knowing if the turbo is operable or not unless you personally know the car it came from.

 

[dj-t]

I've read that a tdo5 and tdo6 rebuilt kit will work for an 18g turbo but what about the turbines?

This has been running in the car for about a year and never notice this before.

What do you recommend on parts to fix this turbo?

 

[mitsuman3000]

Wow, now that was insightful. I went from really wanting a bb turbo sometime in my life to never wanting one. I'm happy with the power and spool of my e316g, just not exactly thrilled with the idea of a rebuilding it in the future (btw, what is a decent lifespan on one that is well maintained?). I knew bb turbos have a much faster spool, but I thought that they were also more dependable than journal. Guess that is what I get for doing all my own thinking .

 

[JusMX141]

I've read that a tdo5 and tdo6 rebuilt kit will work for an 18g turbo but what about the turbines?

This has been running in the car for about a year and never notice this before.

What do you recommend on parts to fix this turbo?

New compressor wheel.


You should probably rebuild the turbo while it's apart, and I'm seeing balance grinds on the compressor locknut so TEC must use a VSR balancing system...you'll need a rebalance if you're swapping the compressor.

I'm happy with the power and spool of my e316g, just not exactly thrilled with the idea of a rebuilding it in the future (btw, what is a decent lifespan on one that is well maintained?).

Infinite lifespan as long as they're given a clean oil supply of proper pressure. It's like asking how long your engine will last....who knows?

I knew bb turbos have a much faster spool, but I thought that they were also more dependable than journal. Guess that is what I get for doing all my own thinking .

Ball bearing turbos are absolutely more dependable than a journal bearing unit IF they're constantly given a clean oil supply.

 

[hurricanecris24]

Hey justin you know the specs on a hx55?

 

[JusMX141]

Which one?

Just like the HX35 and HX40, there are different compressors choices available for the HX55; I believe there are 64mm, 66mm, and also a couple in the 70+mm range.

 

[hurricanecris24]

from what i can gather the hx50,52,55 have different exhaust housing but thats all i can find i just wanna know the size of the turbine housing of the hx55. cummins holset hx55 4089861 800 hp - eBay (item 130497880810 end time Mar-22-11 16:56:42 PDT)