turbo diesel

[tassydevil]

I have a '02 turbo diesel cruiser (australia),does anyone know what boost pressure they run, and where to install a boost gauge, as it seems really slow on pickup, if i am in the wrong section, apologies in advance (newbie!)

 

[dieselbigot]

Welcome newbie ....I'm not sure what the factory boost pressure is for a 1HD-FTE (I'm assuming that's what you have if it's an '02)....but I would guess around 7lbs. You might get some better feedback from the Diesel / 24v tech section....lot's of Aussies hang out there and someone might be able to give you a more definitive answer.....

 

[tassydevil]

thanks mate!

 

[ats4x4dotcom]

Dtronic is the best performance upgrade, and moving the ecu boost pick up point from the turbo, to the other side of the intercooler, to allow for any drop over the intake tract.

Adding a big engine pipe 4" and 3' mandrel bent exhaust also helps alot, when tuned to suit.

 

[tassydevil]

sorry, a bit too technical for me, all i need to know is where can i put in a "T" peice on the vacum/whatever plumbing so i can run a boost gauge, thus determining if it is (turbo) functioning correctly, so if anyone knew where to "plumb" it in, it would be great, I dont really want to pull hoses and things off and make a stuff up!. cheers

 

[ats4x4dotcom]

sorry, a bit too technical for me, all i need to know is where can i put in a "T" peice on the vacum/whatever plumbing so i can run a boost gauge, thus determining if it is (turbo) functioning correctly, so if anyone knew where to "plumb" it in, it would be great, I dont really want to pull hoses and things off and make a stuff up!. cheers

But your pulling hoses off to put a "T" in, so its not any more difficult.

Your best bet is probably buy an engine manual, or find a shop to fit it for you.

 

[tassydevil]

You misunderstand, I dont want to go mucking about without having some idea of what i am looking for, in regards the shop doing it, toyota aren't helpful, in regards a manual, can you recommend one?

 

[100 TD]

A kangaroo bit my car so I don't have it to have a look, but my guess woud be closest to the inlet manifold if possible due to slight restriction losses in the intercooler circuit, heater and egr valve. Boost pressure should be 7.1 to 9.2 psi at 4400 rpm by my book. If you can't find a hose to tee into I suppose you could go directly to the wastegate hose and do it there.

 

[tassydevil]

Thanks for the boost stats, the missus has the car at the moment, but i will have a look tomorrow.

 

[NMuzj100]

A kangaroo bit my car so I don't have it to have a look

Pictures are required.

 

[-uhuru-]

tassy,

my 1HD-T boost up to 9 psi according to my Autometer gauge .... you can splice the vaccum line that goes from your wastegate to the injection pump and tap it with a "T" connector .... your gauge should bring the rest of the hardware including the nylon tubing to run through the firewall ....

if you plan on boosting hard get a Pyro/EGT gauge to avoid serious damage

what engine do you have?

 

[Tapage]

Maybe you can go up to 14 PSI .. in your engine, but I thought the 1HD-FTE engine are electronical controled and more sensitive to any mod.

 

[nickw]

What would a safe boost be on my 1HD-T?
I was thinking about 12.5.

A diesel mechanic friend of my (works on CAT engines) said I could probably safely go to 1Bar or 14.5psi. But I wanted to ask here too.

 

[brownbear]

Well its direct injected......so waay higher than 14. But the higher you go the hotter the air gets and then you need a intercooler. SO probably 12-14 is plenty. The engine should handle a lot of pressure but if you want the engine to last like a toyota then maybe stay in Toyota ranges..........IMOP.

That said I think these things get weak over time in controlling the boost and the numbers fall off.

So set it up at 12 and see how it goes...With a boost gauge and pyro of course.

You might find setting it at 10-12 normal, might get 14 on hard occasions. Under full power. But I can't say for sure. Have fun!

 

[-uhuru-]

12.5 is a safe number ... I would definitly get a pyrometer though .... maybe you can run one of those dual stage boost controllers and have two settings ... say stock @ 9 psi and hi-boost @ 13 psi .... then you would only put that stress on your engine when you need it

does anyone know if there are any adjusments that have to be done to the fuel pump if increasing boost?

 

[Greg_B]

does anyone know if there are any adjusments that have to be done to the fuel pump if increasing boost?

Have to be done is maybe the wrong word. Depends on your EGT's after you have increased boost. I have upped the boost on my BJ74 to 10psi from 7psi, and can still get the EGT's up there when working hard. I had a noticable increase in performance. I did not adjust my fuel, and am not going to with this setting. I simply believe the slightly increased pressure and more O2 is making better use of existing fuel.

If you are underfueled already, then you may have to increase your fuel to take advantage of the increased o2 and pressure.

Use your gauges, increase the boost and see what is needed...

I would agree...12.5psi or so is likely the safe max for non-intercooled trucks. DI engines can handle more as BB pointed out, however a cooler for the charge air would be required. It would also be interesting to see how long the CT 26 bushing style turbo would last at higher boost pressures, and in fact to see what the max boost would be for a stock turbo.

hth's

gb

 

[Tapage]

Interesting .. maybe without moving to more fuel or turbo boost, you can gain some good HP using a intercooled setup with the stock boost press in our 1HD-T engine ..

 

[nickw]

I would like to get an intercooler for my truck.
I am not sure if I should buy a kit, or build my own from pieces.

Anyone have any suggestions?
I saw Safari had a kit for the 1HD-T.

 

[Tapage]

Yap Safari have one .. but I thought very expensive .. someone with this kit . ?