Boost on 1HD-FTE

Submitted: Sunday, Nov 04, 2007 at 12:42

ThreadID: 51269 Views:33340 Replies:2 FollowUps:8

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TD100

Hello All,i want to up the boost on my 100 series by 2 PSI,i have looked in archives and other sites but cant actually find how exactly to go about it,found a post reply by DOZER but it does not say if and how it was done(boost adjuster bought on ebay but how was it plumbed?)the only thing i can see for a wastegate on it is on the inlet above the rocker cover.is this it as i cant see anything else that is in the inlet and exhaust,it has some vacuum!!plumbing and a diaphram which i suspect has a spring in it,help from some one that has done it would be appreciated.cheers Paul

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Reply By: Member - Olcoolone (S.A) - Sunday, Nov 04, 2007 at 13:38

Sunday, Nov 04, 2007 at 13:38

TD100, What I am describing below is a general outline and has nothing to do with the 100 series but they all work the same.

What you may be refering to by the rocker cover maybe the blow off valve or a over boost valve, both of these devices are there for a reason but do differant things and are differant to waste gates..

The waste gate in nearly all factory turbo and a lot of aftermarket systems are in the turbo assembly themselves (internal waste gate), in race applications they sometimes use a external waste gate.

On your turbo you should have 1 vacuum line going to an actuator on the turbo...this is what controls you boost by opening the waste gate at a set point.

Most people in petrol engined vehicles tap into this line and use either a spring loaded boost controller or a bleeder system.

If you don't know how a turbo works or you have no knowledge of engines I would NOT do it your self, if you do it wrong you can destroy an engine with over boost, boost spiking or running lean and if you are lucky may bring a fault code up.

So for saving yourself maybe $200.00 to $600.00 by getting it done properly it may cost you 20 times more if you do it wrong.

There are many people who have done boost increaser themselves and have never had a problem......but then there are a lot of people who have.

Had on guy who can in with a destroyed engine, he tried to increase the boost him self and followed the information off the net...followed it to a tee, the only thing he forgot was the size of the vacuum tube from the waste gate to the inlet manifold was bigger then the fittings on his boost controller....on of the lines can off when he was hooning and got big overboost and a $10000.00 engine rebuild...he disabled the factory fuel cut so he had no safety device.

Regards Richard

Regards Richard

AnswerID: 270021

Follow Up By: furph - Sunday, Nov 04, 2007 at 18:02

Sunday, Nov 04, 2007 at 18:02

Very intelligent reply Richard, no wonder you are in unfamiliar territory.
furph

FollowupID: 533009

Follow Up By: Member - Olcoolone (S.A) - Sunday, Nov 04, 2007 at 18:59

Sunday, Nov 04, 2007 at 18:59

furph...why's that?...

Regards Richard

FollowupID: 533022

Follow Up By: furph - Monday, Nov 05, 2007 at 08:01

Monday, Nov 05, 2007 at 08:01

Because a waste gate on a diesel is not controlled by vacuum, it is opened by boost pressure.
A diesel running "lean" simply does just that. It is overfuelling which causes the damage.
In reality, there is no such thing as a diesel running lean, the amount of fuel being injected at any given time is controlled, up to a maximum calibrated amount, by the injection pump governor. If you dont increase the maximum fuel output at the injection pump you cannot create more boost regardless of what is done to the turbo waste gate setting.
You could derive some benefit by reading the article written by Ian (Thermoguard Instruments) published on this site.
furph

FollowupID: 533098

Follow Up By: Member - Olcoolone (S.A) - Monday, Nov 05, 2007 at 09:40

Monday, Nov 05, 2007 at 09:40

Furph, I used the word vacuun line because more people know what a vacuun line looks like.

As I said at the start this is a general outline.

And I agree more fuel more power.

It is very hard on this forum to explain everything and why something happens, if you go into to much detail and get to technical people who don't understand it will knock you down and on the other hand if you put it into laman's terms people who do understand it will piock little things out of it.

So furph, why don't you explain to TD100 instead of notpicking my post!

FollowupID: 533114

Reply By: Member - Phil G (SA) - Sunday, Nov 04, 2007 at 21:46

Sunday, Nov 04, 2007 at 21:46

Hi Paul,
I'm pretty hazy on this, don't really understand it, but I thought the 1HD-FTE was an electronically-controlled diesel and to improve the performance you could change fuel and timing via a chip (eg Dtronic) rather than simply crank up the boost.

Most diesel specialists suggest a chip and exhaust for the 100series and chip/exhaust +/- intercooler for the 78/79series 1HD-FTE.

Have you read the Electronic Diesel Tuning Devices Article on LCOOL?

AnswerID: 270090

Follow Up By: TD100 - Sunday, Nov 04, 2007 at 22:26

Sunday, Nov 04, 2007 at 22:26

Hey Phil,you can up the boost on the 1HD-FTE,i was speaking to a guy at the 4WD show the other week and he said they do the exhaust(3")chip it and crank up boost in which he said all three make remarked differences in performance to these engines,i was going to fit a larger intercooler and radial mount it to reduce plumbing lengths but he said it is a waste of time and money for no real gains,i already have a 3" beaudesert exhaust system,a D-tronic fitted which has improved it considerably but the only thing to do was to up the boost(should have found out of f him how they do it if he would tell me!)i have looked on LCOOL but it is a dead end also,are you a member as i think i have seen your name in some posts?thanks for the input anyway cheers Paul

FollowupID: 533077

Follow Up By: Member - Phil G (SA) - Sunday, Nov 04, 2007 at 23:33

Sunday, Nov 04, 2007 at 23:33

Hi Paul,
Didn't realise you'd already done a chip and Exhaust. Yep I muck around at LCOOL too.

Sounds like the next step is a twin turbo V8 200series :-))

FollowupID: 533083

Follow Up By: Johnny boy - Monday, Nov 05, 2007 at 09:15

Monday, Nov 05, 2007 at 09:15

Hi all , Hey Paul I don't want to give any advice on the how to get more power topic as I have just been through it and all the different opinions confused the bejesus out of me but I would prefer to give you one bit of advice and that would be to protect and monitor your engine it is very simple to install a Pyro gauge to measure exhaust temps and just for my own curiosity I also installed a boost gauge ,I tow a caravan and now I feel like I'm not driving blind as I drive to the gauges/conditions if you know what I mean and for about $400 I think it is a good investment .

Regards J.B.

FollowupID: 533110