Just Had My R34 Turbo Hi-Flow.

[lcxu105]

Just had my r34 gtt turbo hi-flowed. It's the op6 rear type witch is a ball bearing turbo. When i got it back it's now a journal type bearing.

Witch type is better Journal or Ball bearing.

The company who did the work are telling me the ball bearing hi-flow turbo will fail, but the journal one will not fail.

Also am i being taken for a ride by the company who did the hi-flow by changeing it to journal type bearing????

Cost was just under $1000 to do the work.

[lcxu105]

Just had my r34 gtt turbo hi-flowed. It's the op6 rear type witch is a ball bearing turbo. When i got it back it's now a journal type bearing.

Witch type is better Journal or Ball bearing.

The company who did the work are telling me the ball bearing hi-flow turbo will fail, but the journal one will not fail.

Also am i being taken for a ride by the company who did the hi-flow by changeing it to journal type bearing????

Cost was just under $1000 to do the work.

[Mitcho_7]

Journal are cheaper to rebuild, but I don't think the stock r34 turbo is a bb though?

[scotty nm35]

You will hardly notice the difference between them, stick with the journal, it's easier to rebuild.

What happened to your previous turbo? If the bearings failed and smashed the rear wheel it could be a good idea to make sure the oil feed line isn't blocked.

[The Dan]

If the company is one of the reputable turbo reconditioners then you have nothing to worry about. Ball bearing turbos don't seem to be able to handle everything we throw at them but the bush bearing turbos pretty much never fail. Not saying this will be the case for everyone but that is what we have noticed.

There is nothing wrong with journal bearing turbos. Ball bearing is slightly more responsive though.

How does it feel to drive?

Also, under $1000 is cheap

[GTSBoy]

Journal are cheaper to rebuild, but I don't think the stock r34 turbo is a bb though?

Um....that was one of the two main selling points of the turbos used in Skylines (ie things that could be written down the side of the car). Ball bearing and ceramic turbine.

The GTR T28s are plain bearing.

[Mitcho_7]

Um....that was one of the two main selling points of the turbos used in Skylines (ie things that could be written down the side of the car). Ball bearing and ceramic turbine.

The GTR T28s are plain bearing.

Well there you go, I stand corrected. Either way, nothing wrong with plain bearing hi flows

[lcxu105]

no worries i will ust let it cool down longer to help prevent any overheating of the journal bearing and try and stop oil cooking on it as well

[AngryRB]

what about ceramic coating it?? mine runs alot cooler , do you not let the car cool down after a flogging?

i thought that journal bearings were old technology and dont spool up as early so were not the prefered choice.. if your manifold and housing get that hot then could that be also due to the housing being too small and the exhaust too restrictive causing a build up of backpressure...

Edited July 27, 2012 by SliverS2

[lcxu105]

What i was saying was not to shut the engine down straightaway and let it cool down for 1min. insted of 30sec. just had the car out for a drive and it used to come onto boost at 2400rpm now it comes on at 3000+ and hits like a freight train and lights it up in second at only 12psi of boost never did this before so will be very interesting when i get it dyno tuned at EFI Profamance in a week or 2.

Going to run 14psi on street and 18-20 at drags.

Shpuld run an easy 11 second pass now.

[AngryRB]

11seconds with a highflowed turbo, holy moley..

Edited July 28, 2012 by SliverS2

[lcxu105]

yer the engine is in a lc torana that only weighs 1170kg's with me in it.

[Mitcho_7]

Shpuld run an easy 11 second pass now.

I dunno about 11's man, you'll want to have your suspension and tyres sorted and be able to launch perfectly.

I think 12.5+ or so might be more realistic

[lcxu105]

Car is fitted with full 8point steel cage and springsand shocks have been modified to suit the extra power.

[lcxu105]

car only needs 350hp to do 10.9 qrt

So 11 second pass would be quite reasonable