Diesel Turbos

[t_revz]

Ive been asked about turbo selection by mates who want to turbo their diesels.

2 have land cruisers with 4.2l diesels and another is rebuilding a 10.2l cat diesel to put in an old cruiser as an unlicensed farm car.

Does anything we use on our cars even come close to suiting a diesel? Both cruisers would rarely see 4000rpm but with the capacity difference they would only require a bit more air?

The guy with 10.2l cat engine would prefer twin setup. I'm unsure of the characteristic differences required between the 2 fuels and it got me curious.

Hoping someone has experience or could point me in the right direction.

Cheers

[XKLABA]

look for a turbo diesel turbo, I just brought one for the 5.9 Cummins in my iveco eurocargo from a place in the UK, it cost me $811 delivered

it is a Holset Hx35w twin scroll and the company is called Turbo Dynamics

[R31Nismoid]

And people put the HX35 onto 2.6ltr motors and then wonder why they are buckets of sh*t

[GTSBoy]

Yuh, petrol turbos and diesel turbos have different sizing of compressor relative to exhaust housing. Tends to make them not great matches when swapped.

[XKLABA]

And people put the HX35 onto 2.6ltr motors and then wonder why they are buckets of sh*t

it's not much chop on the 5.9 Cummins either, but that is the stock turbo so that's what went back on

though I think it's more the breathing setup on the truck more than the turbo, and the factory waste gate is 2 bar

[t_revz]

Yuh, petrol turbos and diesel turbos have different sizing of compressor relative to exhaust housing. Tends to make them not great matches when swapped.

Smaller compressor to turbine?

Would imagine 1.06 rear as they would be under load for longer and response is less of an issue?

Might see if Stao makes/modifies anything for the 4.2's

[AngryRB]

what about a 2.5 diesel turbo on a 2009 nissan navara? what could be done to give it a bit more go without massive expense like computers etc my bro just bought one..

Edited September 11, 2012 by SliverS2

[t_revz]

what about a 2.5 diesel turbo on a 2009 nissan navara? what could be done to give it a bit more go without massive expense like computers etc my bro just bought one..

Block wastegate hose

[msports180]

Mate put a 3076 anti sugre with a .82 rear on his GU Patrol TD42, highmount manifold and external gate. Thing is super responsive and makes about 180rwhp, which for a diesel is a lot.

I beleive Kando are starting to make some TD05 combo's aimed at Diesels, United Fuel injection in Perth are using some now.

[t_revz]

Mate put a 3076 anti sugre with a .82 rear on his GU Patrol TD42, highmount manifold and external gate. Thing is super responsive and makes about 180rwhp, which for a diesel is a lot.

I beleive Kando are starting to make some TD05 combo's aimed at Diesels, United Fuel injection in Perth are using some now.

Single cab in that goldy colour and lift kit?

One passes my place regularly and I can hear it spooling from miles away

[AngryRB]

Block wastegate hose

lol.. i dont think he wants 30psi.. the later models have a variable vane turbo, maybe one of those would be a good upgrade.. answered my own question..

i wonder if one of the housings could be slapped on a skyline for extra response..maybe discopotato would know

so do diesel engines work well with gt30's?

Edited September 11, 2012 by SliverS2

[msports180]

Single cab in that goldy colour and lift kit?

One passes my place regularly and I can hear it spooling from miles away

Thas the one, should hear it loaded up in the bush

[XKLABA]

what about a 2.5 diesel turbo on a 2009 nissan navara? what could be done to give it a bit more go without massive expense like computers etc my bro just bought one..

try a 3" exhaust and a performance chip, 20-30% increase depending on quality of components

[kitto]

I was looking at some Gensets i worked around. Detroit Diesel 8.7L Inline 6. 200HP @ 1500RPM (Genset so locked to 1500RPM).

Wasn't able to see the ID tags on the turbo because of the turbo beanie that was wrapped around it.

But no wastegate, looked to be something similar sized to that of a GT30 with a huge exhaust housing - go figure its a diesel. Non water cooled core. I did see the compressor wheel on one when the engine was getting a service and it had quite a small compressor wheel.

After going through all the engine parameters on the Genset control unit, i cam accross Boost pressure. Boost pressure was holding at a constant 0.1 - 0.2 Bar. Which is bugger all. I believe in this instance these engines are turbocharged purely to get more efficiency out of them.

Another story, a friend of mine is currently working out which turbo to replace his current one on his 5L (3 Litre) Hilux engine. Currently has a TD04-13G. According to MTQ and Adelaide turbo services keeping that Turbo is ideal for that enigne.

Bit of a story there but maybe some of it was useful

[t_revz]

After going through all the engine parameters on the Genset control unit, i cam accross Boost pressure. Boost pressure was holding at a constant 0.1 - 0.2 Bar. Which is bugger all. I believe in this instance these engines are turbocharged purely to get more efficiency out of them.

I've worked on 6L- 60L gensets and they all ran 15-25psi. Sounds like yours wasn't loaded up

[GTSBoy]

I've worked on 6L- 60L gensets and they all ran 15-25psi. Sounds like yours wasn't loaded up

Agreed. The 1800kW units I worked with were running over 25 psi loaded.

[GTSBoy]

lol.. i dont think he wants 30psi.. the later models have a variable vane turbo, maybe one of those would be a good upgrade.. answered my own question..

i wonder if one of the housings could be slapped on a skyline for extra response..maybe discopotato would know

Diesel exhaust temps are somewhat lower than high strung petrols.....so the variable vane mechanisms usually shit themselves fairly quickly when misapplied (ie used on petrol). Only Porsche and a couple of others have gone to the effort of engineering variable vane petrol engine stuff that can handle it.

[kitto]

I've worked on 6L- 60L gensets and they all ran 15-25psi. Sounds like yours wasn't loaded up

That was with 70% Load. I thought the exact same thing when i first looked at it. Then read the screen three times, and yes very low boost pressure. Its exactly the same when the Gen sets are unloaded as well.

[PSI086]

Can anyone confirm whether there is any issue using a turbo with a ceramic exhaust wheel such as a RB25 item on a diesel? I seem to recall there being a reason that you can't

[33GTRV]

toyota ct26 for a 1hz cruiser hands down. Wind out the max fuel screw, run 12 pound and be surprised at the grunt it makes from 1500 rpm. Ibe done this to all my cruisers.