Journal or dual ball bearing turbo?

[GTRC Admin]

Thread closed and cleaned up.
If I see any further discussions pertaining to the deleted negative comments in this thread, temporary bans will be handed out to the children so they can cool down.

[cschepp]

^ you don't run a bov? I have "heard" this could lead to a problem but I know people have done it. For me personally I love the sound of the bov but when it's to atmosphere you have a chance of stalling out.

Derk wouldnt the anti lag only help for roughly 500 rpm gain? So instead of making full boost at 4000 rpm you would make it at 3500 rpm? Or have they made this any better?

[knate]

Kinda noobish to the whole turbo game. What is anti-lag? you just don't run a bov so always boosting?

[DreadedFist]

Journal bearing turbos are more resiliant against off throttle surge: confirm/deny

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[M13]

PPL w/ journal bearing turbos hype journals, ppl w/ ball bearing hype bb.

BIAS, but at the end of the day, BB does spool better core for core. Wheel designs have improved BOTH. IE: Honeywell GTX line up and new wheel designs for many journals.


BB is better anyways.


Quite odd for a "veteran" user to be asking such rudimentary question w/o attempting to use the search function on this popular subject (and yes, discussed here MANY times). Also, other forums have more information on this topic. I found all this info when I chose my turbo in/out of this forum, I don't really expect a hand to spoon-feed me info, I just consider that inept and inefficient but that's just me.

[NismoS-tune]

EFR. No BOV. End of discussion.

wait, 500whp? aren't you RWD? That's gonna be a doughnut machine like a 800whp corvette (their tires are WAY wider than yours can be..)

No flaming though, power to you for going that way, just sounds like a lot of dori dori.

[cschepp]

And I have my answer now. Over some conversation and actually helpful info from actual personal experience I'm sure I know what I'm going with now and feel confident with my choice. Thanks for the contributors. For the others continue flamming

[cschepp]

Oh no worries man. If you prefer that I look into things further that's cool too. I just wondered what people experienced and if they were willing to share

[BrianV8]

See out of an article read as well they simply said the bb will easily boost easier and provide better response but of nots repairable then I'm not sure if I want to get into that. What I should be looking at is:

Journal bearing turbo+rebuild=
2 new bb turboes =

If by chance I find that the bb is roughly around the same cost in the long run the. I might opt for the better response. My thing is I am looking for a reliable 500rwhp. I want to be able to lay into it and not worry it will break if I push it. So basically my question is which is going to be my best bang for my buck based on your personal experiences. I know spoolin turbo is running a bb which is making decent power and hasn't had any problems as of yet and was a little more inexpensive. On the other hand Brian I'm sure you have been running your turbo for a season or two right? And you haven't mentioned any probable s. anyways any feedback is appreciated.

The whole reason I put this up is because I am working with a supplier to provide an optimal kit for me that will do wonders as far as appearance and power goes. I would like to know based off opinion not off a piece a paper.

I'll send you a pm can't give away all my 100's of hours of research away that easy hehe

[cschepp]

See out of an article read as well they simply said the bb will easily boost easier and provide better response but of nots repairable then I'm not sure if I want to get into that. What I should be looking at is:

Journal bearing turbo+rebuild=
2 new bb turboes =

If by chance I find that the bb is roughly around the same cost in the long run the. I might opt for the better response. My thing is I am looking for a reliable 500rwhp. I want to be able to lay into it and not worry it will break if I push it. So basically my question is which is going to be my best bang for my buck based on your personal experiences. I know spoolin turbo is running a bb which is making decent power and hasn't had any problems as of yet and was a little more inexpensive. On the other hand Brian I'm sure you have been running your turbo for a season or two right? And you haven't mentioned any probable s. anyways any feedback is appreciated.

The whole reason I put this up is because I am working with a supplier to provide an optimal kit for me that will do wonders as far as appearance and power goes. I would like to know based off opinion not off a piece a paper.

[spoolinturbo]

Thats interesting because most bb units are water cooled also because they cant take the same heat levels a journal can. And yes your right bearing design is not the reason for improved spool. Bearings are all the same, the improvement is in the wheel designs

Its all in the bb chra design. Both Comp and Pte units can be bb and oil only. PTE calls it "air cooled" or something like that.
Look at the world of turbos now. Comp has an oiless turbo, who would have thunk it.

[BrianV8]

Not true. They still use the same old thrust bearing in the back. Nothing in the journal bearing chra has changed to make it "spool" faster.

My bb unit uses oil only for cooling no coolant. Its an option but not needed if you have a turbo timer. If heat was such a difference and made such an impact why would bb units require less oil than non bb?

Thats interesting because most bb units are water cooled also because they cant take the same heat levels a journal can. And yes your right bearing design is not the reason for improved spool. Bearings are all the same, the improvement is in the wheel designs

[spoolinturbo]

In addition to what Brian said, the biggest thing to consider between the two turbos is HEAT. Ball bearing turbos spool faster, but the heat it creates is much higher than a journal bearing turbo. Depending on the technology in the turbo, newer journal bearing turbos should have smaller frictional losses than in older generations.

Not true. They still use the same old thrust bearing in the back. Nothing in the journal bearing chra has changed to make it "spool" faster.

My bb unit uses oil only for cooling no coolant. Its an option but not needed if you have a turbo timer.

You just really have to consider you cashflow in the end. I know the price of a bb unit like I have was minimal vs a journal so I opted for the bb unit.

[Supraclean]

In addition to what Brian said, the biggest thing to consider between the two turbos is HEAT. Ball bearing turbos spool faster, but the heat it creates is much higher than a journal bearing turbo. Depending on the technology in the turbo, newer journal bearing turbos should have smaller frictional losses than in older generations.

Good Call Louis, just another reason why a guy should get a good turbo blanket like DEI or housings coated.
Also fit an aftermarket Oil Cooler with thermostat to help combat.

I noticed once I fitted my Garret GT2871r on my 20 that even with turbo blanket/protected Oil lines that my Oil temps were higher. Obvously other factors could have come into play like/tune more Hp and an unwrapped/coated manifold as I was and still am worried that my manifold wont hold up.

[louis110]

In addition to what Brian said, the biggest thing to consider between the two turbos is HEAT. Ball bearing turbos spool faster, but the heat it creates is much higher than a journal bearing turbo. Depending on the technology in the turbo, newer journal bearing turbos should have smaller frictional losses than in older generations.