Whats going on with my turbo troopy!?

Submitted: Sunday, Nov 05, 2006 at 16:34
ThreadID: 39175 Views:4965 Replies:11 FollowUps:5
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I just got the denco kit fitted to my troopy, 4.2 1HZ motor. It doenst go any better. No noticable power difference. Asked the shop that did the work, if they tuned and set it up correctly they said they did. Now I know a thing or two about turbo cars and engines etc, I biult this... http://www.members.optushome.com.au/stimps/DCP_1765.jpg

But its petrol. Im new to diesels.
The diesel engine in my troopy, gets boost, I put a boost gauge on it, and it gets the normal 8 psi of boost. When you drive it, and the boost comes on, you dont feel it. I dont think the diesel pump on my engine has any compensation for boost pressure, so basically at them moment, the boost is just blowing through and not all the air is being burned by the diesel fuel.
I drove it hard at full throttle up to 5000 rpm today, and still it feels no different. I rang the shop that did the work and they say "we tuned it proprely with a pyrometer"
I guess that means they put a temperature probe onto the exhuast and make sure it doesnt get too hot.

Whats going on? did they not turn the fuel up?

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Reply By: coll964 - Sunday, Nov 05, 2006 at 17:44

Sunday, Nov 05, 2006 at 17:44
John
I had exactly the same problem with my Troopy - I had a safari turbo installed in Perth by their agent, but like you I couldn't feel any difference. After months of fruitless arguing I went to another turbo installer to get it re-tuned and bingo - they hadn't re-tuned the diesel pump. Difference was very apparent straight away. Demand them to look at it again. When you are paying in excess of $3k you want to be able to feel the difference.....
AnswerID: 203193

Reply By: Member - 'Lucy' - Sunday, Nov 05, 2006 at 17:53

Sunday, Nov 05, 2006 at 17:53
Its the installer not the turbo kit.

You can boost AIR all day long, however if the fuel is not matched to the new 'boost' then not much extra is going to happen.

AnswerID: 203195

Reply By: howesy - Sunday, Nov 05, 2006 at 18:00

Sunday, Nov 05, 2006 at 18:00
Most installers increase fuel half to 3 quarter a turn on the pump to compensate for the turbo. It would be easy enough undo the lock nut and i think its in to increase go one full turn and check for excessive black smoke if you don't have it you went the wrong so go back your one turn and then half to 3 quarter if you did have the black smoke back it off quarter to half turn and lock it off. If you really want it 100% the only real way to do it is have your pump recalibrated which can only be done on the bench where they will strip it clean it and set it to factory specs plus 6-10% for the turbo. This increases all settings not just fuel so you static and auto advance settings are done to match as well. When I had my aftermarket I simply went by the method I outlined and when I had the injectors and timing belt done I spent the extra to have the pump done properly as well.

No doubt others will disagree but this was given to me by my diesel pump specialist.
AnswerID: 203196

Reply By: Grungle - Sunday, Nov 05, 2006 at 18:35

Sunday, Nov 05, 2006 at 18:35
Did they fit a fuel aneroid (boost compensator) to the fuel pump? You can tell if they did by checking to see if there is a small pipe going from the fuel pump to the pipe in between the turbo and inlet manifold.

Denco advertise on this site so why not contact them for advice.

Regards
David
AnswerID: 203200

Reply By: Member - Jiarna (NT) - Sunday, Nov 05, 2006 at 19:05

Sunday, Nov 05, 2006 at 19:05
The installer needs rebooting.

Cheers
John
AnswerID: 203213

Follow Up By: Bonz (Vic) - Sunday, Nov 05, 2006 at 20:00

Sunday, Nov 05, 2006 at 20:00
And Dubbinning
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FollowupID: 462800

Reply By: Member - 'Lucy' - Sunday, Nov 05, 2006 at 20:48

Sunday, Nov 05, 2006 at 20:48
All right Long John I'll fess up.

I have an after market DTS/MTQ on my 1HZ Troopy.

The only SAFE way to do this is have the pump and injectors removed, overhauled and recalibrated when fitting the said turbo.

The Injectors are checked for spray patterns because would you believe 4 new injectors out of a packet can give you 4 different spray patterns.

The pump is then o/hauled and set/recalibrated (or whatever it is they do) to match the recommended boost specs for the turbo and engine.

Those that use the 'old' adjust the fuel screw technique are a unique 'cew' who should be left to enjoy themselves.
AnswerID: 203238

Follow Up By: Member - Roachie (SA) - Sunday, Nov 05, 2006 at 21:05

Sunday, Nov 05, 2006 at 21:05
Hey Lucy,

Just saw your revelation about "sex after 50......."

Seems like I might have to send you some of the SPAM emails I've been getting for a certain pharmaceutical product that might make your SWMBO's life a bit more interesting and make you a bit stiffer......hahahahaha
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FollowupID: 462824

Follow Up By: Member - 'Lucy' - Sunday, Nov 05, 2006 at 22:24

Sunday, Nov 05, 2006 at 22:24
Don't need em Shags.

I get inundated with them and other 'enhancing' ones like you wouldn't believe, and I am not cutting 4 inches of mine for anyone.

Thanks for the thought by the way.

And us 49yr olds are Ok for the moment
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FollowupID: 462852

Reply By: Member - Stephen M (NSW) - Sunday, Nov 05, 2006 at 21:32

Sunday, Nov 05, 2006 at 21:32
It needs to be put on a dyno to set up 100% otherwise wasting your time. This way they load it up and get it up to certain speeds under load also not supplying air via an electric fan to also make sure your own clutch fan is working so you dont have overheating problems and also set the pump accordingly and turbo (most between 8/10psi) so that you are not overfueling which will result in engine damage and they will also check exhaust temps to make sure that it doesnt go over approx 500 degress, this all depends on boost and fuel supply. Sounds like the installer needs a boot up the ar@e not a boost. Regards Steve M
AnswerID: 203251

Reply By: Dave from P7OFFROAD Accredited Driver Training - Monday, Nov 06, 2006 at 07:48

Monday, Nov 06, 2006 at 07:48
as others have said, you should approach the installer.

When we did ours we had the entire fuel system overhauled and then dynoed, the difference was amazing.
AnswerID: 203286

Reply By: longJohn - Wednesday, Nov 08, 2006 at 10:57

Wednesday, Nov 08, 2006 at 10:57
Well I went back to them yesterday and they said "it didnt need any more fuel as it was already enough" which I dont give much credit at all, and he also said " I drove it before, set it up and then drove it after" but Obviously that aint worth a pinch of crap either because I cant feel the different. The warranty says set up at 450deg C and 8psi boost. But im sure the engine isnt using the extra air, so bleep off. Spent 4k and got absoulutly nothing, just a shiney lump of metal.

So I winged and complained and finally he turned up the screw a quarter of a turn. He wouldnt put on a pyrometer and he wouldnt drive it. He just left me to drive away. When I drove it home, it still felt totally normal, possibly a BIT better, but not much, NO WAY IS IT 4K WORTH. Now I only went back to this moron just so my warranty would still be intact.

So let this be a warning to everyone considering buying a kit of any sort, Denco or otherwise. Its not so much the kit thats important but who you get to do the work. These guys I used dont have the balls to do the job properly. Im going to write a formal complaint to Denco.

AnswerID: 203671

Reply By: Member - DOZER- Wednesday, Nov 08, 2006 at 20:50

Wednesday, Nov 08, 2006 at 20:50
A turbo will increase power and torque on a well motor, but wont fix a sick motor....did you use thesame exhausrt system? did the fuel filter get changed, air filter??
Andrew
AnswerID: 203786

Reply By: longJohn - Wednesday, Nov 08, 2006 at 22:27

Wednesday, Nov 08, 2006 at 22:27
I got the exhuast system upgraded with the turbo kit. The motor is very healthy. If you increase airflow, you have to increase fuel flow also, which they clearly have not done satisfactorily
AnswerID: 203802

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