Questions for Justin...

[genegoesfast]

Is the ideal oil pressure for a 20g 40-50psi? I'm going to be running off the ofh with balance shafts removed which I believe will produce around 100psi. What kind of oil feed setup should I run from the ofh to keep this pressure in check? P.s. It's one of your rebuilt 20g's. Thanks Justin.

 

[JusMX141]

I just took apart a small 16g i bought the other day and it did not have a reverse thread on the turbine. Has anyone ever seen this? I have taken apart about 25 mitsu turbos and never seen this before.

Some 20G's and even a couple Big 16G's I've seen had right-hand threads for one of two reasons- either the turbo was built before the left-hand threaded 05H turbines were introduced, or the turbos originally an early 14B which was upgraded to a larger compressor and different cover.

The evo1 b16gs with number xxxx450 are right hand thread. So you got an earlier year. the evo1 i had, had loctite on it, and it looked original. You likely got an earlier model, or it was swaped out.

No unmolested MHI turbo I've ever seen had Loctite on the compressor locknut. There's a good chance it was messed with at some point in time.

Is the ideal oil pressure for a 20g 40-50psi? I'm going to be running off the ofh with balance shafts removed which I believe will produce around 100psi. What kind of oil feed setup should I run from the ofh to keep this pressure in check? P.s. It's one of your rebuilt 20g's. Thanks Justin.

Max oil pressure for a MHI center housing is 42-48psi. If you exceed this number by much you WILL damage the turbo....it may not happen right away, but it will happen.

If you're feeding from the filter housing you'll definitely need a restrictor.

 

[Sirnixalot]

Hey Justin,

What compressor wheel would you pair with the Evo X turbine for use on a 7bolt 2.3L stroker? Main use is for autocross and I am looking for a nice fat torque curve. Something that will support somewhere in the region of 450wtq on 93oct pump gas and i am happy.

Thanks for the help

 

[JusMX141]

If you're sticking with the TD05H turbine, you're going to be limited to around a 20G compressor wheel spec. The 05H compressor operates at faster shaft speeds than it's 06SL2 and 06H brethren, so mating a compressor designed for use on larger turbines with lower shaft speeds on a TD05H turbine is not a great idea.

Ideally a compressor like a 68HTA would be super- lightweight, quick-spooling, tons of airflow, and designed for use on a TD05H turbine.

 

[Sirnixalot]

i guess i am stuck with the FP green upgrade then. I am not certain how laggy the TD06SL2 turbine wheel with the 20g compressor wheel will be. Can't have my cake and eat it too.

Thanks for the help!

 

[Kyle_T]

Im having trouble getting my stock coolant lines to fit on my 14b with the punishment downpipe. Would something like this work in place of the stock lines? EXTREME PSI : Your #1 Source for In Stock Performance Parts Or would the turbine housing get to hot for the rubber hose to be that close?

edit: or what about something a little longer like this: http://cgi.ebay.com/ebaymotors/C1-T...ptZMotorsQ5fCarQ5fTruckQ5fPartsQ5fAccessories

 

[JusMX141]

How the hell are you routing your coolant lines that the downpipe is getting in the way?

 

[ziggo0]

Hey Justin, figured I would use this thread instead of PM'ing you.

Where can I get a compressor cover machined to fit a bigger compressor wheel at? I'm know this isn't for the dsm, but it's a TD05HR 16g6 compressor wheel going on a TD04LR turbo. It's basically a big wheel stocker for the srt4. It's been done before by a few places but they seem to want 500 ~ 700$ to do so...all my research into the subject yielded that compressor wheel, and possibly machining the compressor cover. Thanks for your reply!

 

[JusMX141]

Getting the cover machined should be the least of your worries- you should first figure who is going to be able to sleeve the 16G wheel in order to make it fit the smaller TD04-spec shaft.

 

[Kyle_T]

How the hell are you routing your coolant lines that the downpipe is getting in the way?

whoops! I meant to say punishment j-pipe. Every which way I bend my coolant lines, the return line is either hitting the jpipe or the wastegate actuator. And my stock lines look all mangled haha. So would something like that work?

 

[JusMX141]

You could either do that or just cut the metal coolant lines as short as necessary and use a longer piece of rubber which can be routed however you'd like, or just not run coolant at all. Last two 16G's I installed on cars left with no coolant going to them and they're still on the road- much cleaner, much easier to service in the event of a problem...just remove the v-band and the oil lines and the cartridge comes right out- no need to remove the entire turbo from the car and drain the cooling system.

 

[TJCTalon]

What is the thread pitch for the manifold to turbo bolts?

Ive herd of people having broken bolts issues when using home depot bolts. Even grade 8. I need to find a shorter bolt for my new manifold, but dont want to worry about busting bolts into my housing? Whats my safest bet?

 

[JusMX141]

10mm x 1.25.

I'd use the strongest bolt you can find- one that is at least as hard as the metal used in the housing....otherwise the housing tends to eat the threads off the bolt and the bolt will snap off when attempting to remove it. Standard 8.8 metric bolts should only be used in an absolute emegency; I'd choose at least a 10.8-grade fastener.

 

[bradikus7]

I purchased an HX35 compressor cover off of you a while back. I have decided to do ss braided vacuum lines all around and I just need to know the thread size you tapped the boost source with? I figure it is standard 1/8 NPT but just want to check with you before I buy fittings.

 

[JusMX141]

All tapped / threaded boost sources on compressor covers that I've seen were 1/8" NPT.

 

[Bud92gsx]

I know the answer to this qurestion already..But I want it to be not true so I'm going to ask any way..

No spool, and a screaming turbo as well as smoke is signs of a dead turbo? Correct..

 

[Kyle_T]

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How much does a bend like that on the corner of the turbine wheel affect the turbos performance?

 

[hurricanecris24]

Hey justin I got another turbo question for you, how does the t5 20g in 10cm t3 housing compare to a hy35 in 9cm housing? Spool rate? Airflow? I feel like the hy35 would spool a little later or similar due to the smaller housing but flow more, overall making more power.

http://www.dsmtuners.com/forums/dra...ave-hx40-10-14-4g63awdhonda-hy35-11-14-a.html
Gabe has gone 11s on this turbo on pump seems like a awesome setup.

http://www.dsmtuners.com/forums/newbie-forum/405294-fp-tdo5h-20g-turbo-2.html#post152637432
He's using the t3 housing but with an adapter to stock mani but so far at 17psi its doing well.

Can't find actual data or dyno results on each one maybe I'm not looking hard enough.

 

[JusMX141]

No spool, and a screaming turbo as well as smoke is signs of a dead turbo? Correct..

Generally-speaking, yes.

How much does a bend like that on the corner of the turbine wheel affect the turbos performance?

Not really a question of how it will effect airflow because that bent fin is now a weak spot which will break off entirely rather quickly when introduced to extreme heat and airflow.

Hey justin I got another turbo question for you, how does the t5 20g in 10cm t3 housing compare to a hy35 in 9cm housing? Spool rate? Airflow? I feel like the hy35 would spool a little later or similar due to the smaller housing but flow more, overall making more power.

http://www.dsmtuners.com/forums/dra...ave-hx40-10-14-4g63awdhonda-hy35-11-14-a.html
Gabe has gone 11s on this turbo on pump seems like a awesome setup.

http://www.dsmtuners.com/forums/newbie-forum/405294-fp-tdo5h-20g-turbo-2.html#post152637432
He's using the t3 housing but with an adapter to stock mani but so far at 17psi its doing well.

Can't find actual data or dyno results on each one maybe I'm not looking hard enough.

I have no idea what to tell you here because not enough people are using the 20G in the 10cm housing OR the HY35....it's like a matter of comparing one person's results to another's. The HY is definitely going to make more airflow and can be had for the same price or even less money than a 20G.

When you figure Gabe's trap speed versus the weight of his car on that 11.14 run which had almost a 2.0 60ft, he's definitely putting around 550-600 to the ground.

 

[naw9119]

Hey Justin
Ive heard of people putting evo3 16g compressor wheels and housings on a 14b hotside. I know you end up with some kind of hybrid but what would be the diffrence between the original and the hybrid?
# # #

 

[brian9397gsx]

You end up with a 16g in a 6cm housing. Under most circumstances its a downgrade.

 

[JusMX141]

^ Bingo.

There's a reason Mitsubishi never offered an Evo III 16G with a 6cm housing.

 

[gtbread77]

Yo dude, i got a turbo from a good buddy when i got my car . He claims that it was built frankenstein style buy a turbo builder in denver the cold side says tdo5 which is a 16g but he says that it has a 18g compressor wheel that has been knife edged. is a 18g compressor even possible in a 16g hosuing i have no idea what the hot side housing is. Any Thoughts ???? It spools around 31-3200 rpm in a 3rd gear pull if that helps any

 

[JusMX141]

Yo dude, i got a turbo from a good buddy when i got my car . He claims that it was built frankenstein style buy a turbo builder in denver the cold side says tdo5 which is a 16g but he says that it has a 18g compressor wheel that has been knife edged. is a 18g compressor even possible in a 16g hosuing i have no idea what the hot side housing is. Any Thoughts ???? It spools around 31-3200 rpm in a 3rd gear pull if that helps any

Pics would help. I cannot identify your turbo from a vague description and claimed spool characteristics.

 

[delta448]

has a 18g compressor wheel that has been knife edged.

I got one.
Hey Justin, how do you knife edge a compressor?