Which Turbo??

Submitted: Thursday, Mar 31, 2005 at 19:08
ThreadID: 21665 Views:3097 Replies:7 FollowUps:8
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With the arrival of our camper trailer in June,its time to power up the old 2.8 diesel with a turbo .
What Im wondering is ,what brand turbos are people installing on their "hill detectors" and how are they finding the vehicle now?
And how compatible(yes i know there's thousands out there) is this engine with a turbo,any mods needed internally?
Mechanically its running well,no black or blue smoke,no funny sounds from engine,dosnt use any oil between services ,already has a H/D clutch.
Thanks All Nick
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Reply By: 80scruiser - Thursday, Mar 31, 2005 at 20:49

Thursday, Mar 31, 2005 at 20:49
Have a compression test done.
If thats OK get the injectors serviced.
Then go out and buy a Denco kit. Good instructions to DIY.
Then fit an EGT guage and off to somebody who knows how to tune it.
If its done a few Kays I recommend to have no more than 7.5 lb boost and no higher EGT than 500 degrees with the throttle flat out under load for 2 minutes.
You will be happy just like me. I have fitted a few kits now and all customers very happy.
BTW the DTS kit is also very good except with the Denco you get a full exhaust.
AnswerID: 104576

Reply By: Big Woody - Thursday, Mar 31, 2005 at 22:03

Thursday, Mar 31, 2005 at 22:03
Hey Nick,

You've gotta be careful with the 2.8L diesel. They have weak crank shafts.
I had the engine fully rebuilt and a Mike Vine turbo fitted, whole job cost about $12,000.
Did about 50,000 km's when the first crank shaft let go. Another 1 year later the 2nd one went.
I did what any other bloke would do. Sold it to my brother.
I also have a 75 series ute and had a Mike Vine turbo fitted the day it rolled off the showroom floor. It is now on 360,000 km and the motor has never been touched.
I think the 2.4l hilux motor is a bit stronger and can handle an aftermarket turbo a bit better.
I think the 2.8l is better left the way it is.

Just my 2 cents worth mate.
Good Luck,
AnswerID: 104596

Follow Up By: Truckster (Vic) - Friday, Apr 01, 2005 at 10:32

Friday, Apr 01, 2005 at 10:32
$12k? could have done an engine swap for that price!
FollowupID: 361979

Follow Up By: Member - Nick (TAS) - Friday, Apr 01, 2005 at 18:24

Friday, Apr 01, 2005 at 18:24
I have heard that the 2.4's are stronger but know of heaps of 2.8's fitted with turbos with no problems.Looking at buying a 2.8 Hilux d/c that had a turbo fitted when new,now on 140000kms never touched.
FollowupID: 362028

Follow Up By: Big Woody - Friday, Apr 01, 2005 at 21:56

Friday, Apr 01, 2005 at 21:56
I agree with all of the comments regarding boost levels. I think mine was set on about 14 or 15 lb boost which was too high for this motor. I would not set it higher than about 5lb on a 2.8 litre toyota engine.
I personally wouldn't bother as the benefit gained at a 5lb boost would not be justified by the outlay.

P.S. - I also know of 3 other 2.8 diesels that have had the cranks go. None of these had a turbo fitted.
FollowupID: 362047

Follow Up By: Member - Jeff M (WA) - Friday, Apr 01, 2005 at 22:06

Friday, Apr 01, 2005 at 22:06
I belive that Toyota recitfied the week cranks in the later models. Not sure what year it changed, but I think you'll find that they were snapping cranks even without the turbo if over revved reguarly.
FollowupID: 362050

Reply By: Derek - Friday, Apr 01, 2005 at 09:07

Friday, Apr 01, 2005 at 09:07
I was considering turbo-ing my 1HZ and decided that before I shelled out hard earned cash I would do some research. I visited 3 local engine rebuilding shops and put my questions to the proprietors, and guess what - my 1HZ is still naturally constipated and that's the way it's gonna stay.
Hope this helps.
AnswerID: 104634

Reply By: Truckster (Vic) - Friday, Apr 01, 2005 at 10:37

Friday, Apr 01, 2005 at 10:37
I didnt know about weak cranks on these engines as pointed out above, so in that case, I'd be looking to do an engine swap... No use putting more strain on it if they have issues.

But then when you work out that its going to cost $10k for someone to do the work for you on an engine conversion, you maybe better to take the opportunity to upgrade the truck.

Denco turbos are great, bleep easy to install, 1/2 a day tops, and make a great difference.

Everyones expectations are different though on what you get for the power up.
AnswerID: 104644

Follow Up By: Nudenut - Friday, Apr 01, 2005 at 16:30

Friday, Apr 01, 2005 at 16:30
what would be normal boost on engine that is not weak?

7.5 lb boost seems moderate...so may be one and engine could be happy with say 5 lb boost ?
FollowupID: 362020

Follow Up By: Truckster (Vic) - Friday, Apr 01, 2005 at 16:59

Friday, Apr 01, 2005 at 16:59
I know people runnin 22+ on GQ diesels.

Im on 12, but thinkin 14 would be nice :D

its a yota engine, so 1/2 a micropsi maybe deadly.
FollowupID: 362021

Reply By: Smudger - Friday, Apr 01, 2005 at 18:52

Friday, Apr 01, 2005 at 18:52
I'd heard that an aftermarket turbo on a 4 litre Toyota was a good idea ..was considering getting a Troopie and powering it up. Then I mentioned it to my mechanic (a 4WDer of long standing) and he reckons that while the performance is enhanced amazingly, it ultimately kills the motor well ahead of it's time. Says the motors weren't blueprinted to handle the extra load. I'd look at the alternatives. Anyway, that's my two bobs worth.
AnswerID: 104705

Reply By: Wisey (NSW) - Friday, Apr 01, 2005 at 20:05

Friday, Apr 01, 2005 at 20:05
Hi Nick

Don't mean to hijack but the subject is in my focus.

I have just bought a 3Ltr and am researching also.

Is the three litre any better than the 2.8 or is it a stroked/altered 2.8ltr and is there anything serious to be aware of before fitting a turbo and will Average Andy be able to do the fit up? Got 175K on now and curious. Can do mechanical stuff but never done a fitup like this. You may know Nick or anyone else.


AnswerID: 104712

Follow Up By: Big Woody - Friday, Apr 01, 2005 at 22:00

Friday, Apr 01, 2005 at 22:00
Hi Andy,

I don't know if it is true, but a mechanic friend of mine advised that the 3 litre is a 2.8 litre with a different crank and rods. If so maybe they put a stronger crank in them anyway as I think it was the only weak point in the 2.8

FollowupID: 362048

Reply By: Jim-Bob - Friday, Apr 01, 2005 at 20:45

Friday, Apr 01, 2005 at 20:45
G'day Nick
I own a 2001 3.0ltr TD GXL Prado with 58000k on it and also a 1989 2.8ltr Diesel 4 runner.
The 4 runner has the DTS on it with a larger exhaust and staight through muffler and Airtech snorkel.
The 2.8 had 405000kms on it when I put the turbo on, and now has 519000kms.
I only run 7.5psi boost (thats all you need to run rings aroud a Pootrol), the thing is you have to get somebody to set the mixture and timing correctly to make them perform.
The 4runner will out run and power the Prado by a minimum of 10%.
As far as the weak cranks are concerned i've never heard of one breaking but I suppose it's got something to do with how they are driven.
I have towed my CT up to Cape York and the Gulf over the last couple of years and I can tell you they are a pleasure to drive with a turbo on them. Do it.
Safe travells Jim-Bob
AnswerID: 104719

Follow Up By: Member - Jeff M (WA) - Friday, Apr 01, 2005 at 22:10

Friday, Apr 01, 2005 at 22:10
Yes when I was researching my Rocky (has the 2.8 with upgraded cranks and head as it's a factory intercooled turbo) I found out about the weak cranks. It was more a rev (driving style) factor than anything else as far as my research showed. But as I say, I'm pretty sure it was only the early 2.8's that suffered this problem.
FollowupID: 362051

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