Ball Bearing Turbo's - What's the deal?

John

Got some prices over the phone last week, quite a big difference.... just to buy!

1. Garret Ball bearing High flow turbo $2850.00....still have to buy dump pipe and exhaust

2. MTQ and Denco turbo upgrades are around $3200.00 - $3500.00 This upgrade includes: Bush Turbo, 3" dump pipe and 3" exhaust system

Cheers Ingo

Andrew,

Im just "entertaining the Idea" of trading my 4.8 to same model 4.2 oil burner. "IF" I did it, It would be a massive drop in horses and I guess Im trying to convince myself I can get a 4.2 moving swiftly without loosing to much reliability. Heard good and bad reports on Ball Bearing turbos & what they can do these engines.

Cheers

The turbo on a 4.2 is way too small for it, there are ways around it, one is to buy an Arb/Safari turbo and install that. A friend has done this and is happy with the result. Also, the intercooler is too small for the motor aswell...putting one out the front shouldnt be too much an issue. ome on here have had heaps of overheating issues with a booster 4.2....they just dont shed heat too well.
Depending on what you need the oiler for....it should tow better than the 4.8....but for power, nothing you do to the 4.2 will get it to go like the 4.8. Gas on the 4.8 is a way of reducing costs.
Andrew

This is the turbo that made a large difference to a 4.2 t/d cruiser

http://psi-supply.com/store/index.php?main_page=product_info&cPath=1&products_id=8

Andrew

Out of interest Andrew, I have a front mount I/Cooler supplied by Safari and with my second battery it means I needed to custom fabricate air lines to run past this battery. The supplied Safari pipes run right through where the second battery is placed on a GU.

No major issue, but still another thing to overcome with a front mount I/cooler. End up costing me about $150 (and grazed knuckles) to fit these custom s/steel pipes bent to my specs.

This was the case when I purchased the i/cooler back in 2001, so if things have changed and Safari have other alternatives now I am sorry for the mis information.

Cheers, Trevor.

Thanks for that Flywest how much boost are you running over standard and how long has it been on there.

Oh and "good Garret gear onto Nissan" Could be worse, I could look at putting Ford parts on it! lol

Thanks Ross

Seems like ball bearing is the way to go If replacing a turbo.
I will continue my research based on what size ball turbo would best suit before going any further.

Thanks for your advice

Cheers

No prob mate.

There's lots of info out there, it just sometimes gets a bit distorted by retailers, especially if it's for very specific modifications rather than off the shelf applications.

Cheers,

Ross.

Im assuming you are running a bearing turbo?

70% is a mighty Increase - that would be around 130kw at the rear wheels (roughly the same as a 4.8) what other mods have you done to be able to achieve a figure like that?

Correct -
130.x at wheels.
522Nm at wheels.

I have been working with Andy at Dieseltec http://www.diesel-tec.com.au/, doing some R&D on different turbos. Very interesting results were had.

I ended up with a BB Garrett. 3inch exhaust was already fitted. Pump tune/dyno tune, nothing else was done.

Anyway look at the charts, to see the power loss from going up tire sizes. VERY EYE OPENING!!!

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Here is the last update which I will be updating now I've done a 1000-2000klms since the work, that I posted on outers regarding "Stage 4", to read the lot, go here. http://www.outerlimits4x4.com/phpBB2/ftopic153127-90-0-asc-.php
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Well picked it up today - Finished... Andy had a smile, that was a great sign!!! Actually the car was ready Tuesday, but I offered for him to keep it for a few days to try things, and drive around to make sure he was happy with it (Actually I couldnt get there until today )

In the end it turned out that Stage 3 didn't happen, and I ended up with stage 4 - a nice shiney new Garrett Andy has worked with these before, and knows them well.

:End Result:

265 AT's: 386 Ftlb (522.75Nm)
265 AT's: 130rwkw@102kph

285 MTRs: 312 Ftlb (422.54Nm)
285 MTRs: 111rwkw@108kph
Figures converted from Ftlb using
http://www.mr2ownersclub.com/converter.htm

Now I always realised there would be a bit of difference in power and torque from 31's to 33's, but didn't realise how much you lose with going up 2inches in tire size!

Anyway, onto driving it..

So far I have only driven it 60 odd klms home from Lilydale Via Eastlink with a few dozen traffic lights in the middie then freeway. Stop starting, you notice the difference. It actually goes! It is Soooooooo SMOOOoooth . No squealing, no oil leaks, and feels great!

Very nice even power Delivery from standing up to 100 with no flat spots, and power delivery comes in from low down.

EGT's are down ~100-150 degrees over the Housing 2

Car goes back to Andy after 1000klms for checking fittings and general once over. Thats service !!

To Andy and his team, thanks for your time, and work with this.. Good to deal with someone that tells you how it is upfront instead of stringing you along with drivel, lies and bull bleep .. That makes a change!

It is a shame that the first 2 didn't work out more for his sake than mine as Andy and his team put a bleep load of time and effort into this project. But thats what R&D is all about isnt it, not everything you try will work.

There ya have it... Now, how to get 130rw with the 285s
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That is a pretty big drop in regards to tyre sizes...Thanks for the info and the other link, I will be interested to know what your consumption comes in at, as the old saying goes more power = more fuel.

Cheers
Ingo

Fuel hasnt changed that much :) Actually the first tank full was chitloads better than the previous turbo that was on there, by a LOOoooonnnnnnnnnng way...

The best thing is the EGT's have dropped 100 degrees.. Extremely happy with that!

Hy Truckie you amaze me are you not just a truck drive as per your handle.. (LOL) how do you know all this stuff, Been going to school or something? or just relying on what other people say..

It's a pity....