What is the redline for a TD42?

[SKID]

What is the redline for a TD42? I have a 2000 GU which had a heart transplant being a 1990 silver top turbo, as the truck was originally a 3.0 ZD and still has all the original guages would like to know where I can safely rev it to... Also is it normal for it to blow smoke when I hit the pedal and it boosts up to 12PSI?

[Rocket55]

Don't know, mine won't really rev over 3,000rpm on the road... Think it went to 3,200rpm once.

[SKID]

Mine not a Ti so doesn't have any electric's controlling the motor...Just took it for a run and ran it to max boost, then I notice the boost starts to drop away is that normal?
Should have taken a look at the tacho while I was at it, just wanted to see what it could/ would do...

[Ben-e-boy]

I have seen 4200 in mine

[Ben-e-boy]

You dont have over revving as such, they are a mechanically governed pump. Once the governor takes over it wont rev any more

[Rocket55]

Thanks Benny, didn't know that.

I'm hoping mine will be capable of seeing 4,200 soon.

[nissannewby]

Don't know, mine won't really rev over 3,000rpm on the road... Think it went to 3,200rpm once.

Thats interesting. I turn mine to 4200-4500 each time I drive it. My redline on my dash is at 4500.

[Rocket55]

Thats interesting. I turn mine to 4200-4500 each time I drive it. My redline on my dash is at 4500.

Wow, yours must go better than mine, I couldn't be bothered waiting for it to rev that high :wink:

[Hodge]

Rodney you mentioned your s won't go above 3000-3200. How is it different to mine as I can easily drag a gear out to 3500-4000 range on road.

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[nissannewby]

Wow, yours must go better than mine, I couldn't be bothered waiting for it to rev that high :wink:

Will it free rev to 4000rpm?

[nissannewby]

Thanks Benny, didn't know that.

I'm hoping mine will be capable of seeing 4,200 soon.

You wont need to with the output you will have.

[SKID]

So I shouldn't worry about over reving it?
What about the smoke?

[SKID]

And is it normal for the boost to start to fall away when reving it out?

[Rocket55]

Rodney you mentioned your s won't go above 3000-3200. How is it different to mine as I can easily drag a gear out to 3500-4000 range on road.

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I find that a tad over 3,000 it just wants to stop. Mind you I do tend to drive it around on 2/3 to 3/4 throttle. Next time I drive it I'll ring it's neck and see what it does.

[Rocket55]

Will it free rev to 4000rpm?

Don't know. never tried it.

[SKID]

What about the smoke? its more noticeable at night with headlights behind me looking in the rear vision mirror...

What about the boost falling away when I rev it out?

Are these things normal?

[Rocket55]

And is it normal for the boost to start to fall away when reving it out?

Keen to ssee if mine does this as well. My boost is set it 12psi.

[Rocket55]

What about the smoke? its more noticeable at night with headlights behind me looking in the rear vision mirror...

What about the boost falling away when I rev it out?

Are these things normal?

During the day I can't really see any noticeable smoke (there is some though) at all in the mirror, but at night it does look like a bit of a smoke screen on anything above 1/2 throttle and about 2,000rpm.

I have read somewhere that the soot particles really reflect the light which is why they always look much worse at night. Don't know how true this is as I read it on the internet... Don't know if soot lights up anymore than just regular fog/smog.

[Ben-e-boy]

What about the smoke? its more noticeable at night with headlights behind me looking in the rear vision mirror...

What about the boost falling away when I rev it out?

Are these things normal?

What turbo, what injector pump?

[SKID]

What turbo, what injector pump?
No idea, I've only owned the truck for about 2 months, the conversions was done by the previous owner...

[Ben-e-boy]

No idea, I've only owned the truck for about 2 months, the conversions was done by the previous owner...

That dosnt help at all.



If you have a larger turbo and pump the boost falling away isnt right and could be cause by a number of things.
If it is a smaller turbo that works in the low rpm, then yes, it will fall over in the higher rpm,
A bit of smoke off boost is normal, you need fuel to make heat, heat to make exhaust gas velocity, velocity to make boost,
Too much smoke isn't right and could be tune related, amongst other things

[SKID]

Looking at the turbo on the exhaust manifold, it doesnt look all that big

[Robo]

put some injector cleaner threw it.
and not sca cleaner, stick with a brand name if possible.
and if they recommend doubling the dose for faster better clean don't hesitate doing so.
check your air filter also.

[SKID]

Noticed today that mine finds it hard to rev past 3000RPM

[BigRAWesty]

Mine will do 4500.... but that's low second.. and that's about where the red line starts on the tacho. .
It's bloody screaming when up there so I don't do it for long.
But I have no power so any big sand hills..
It sits on 3000 happy as when towing up long hills. It's usually in 3rd high and 60-70km/h.. again. No power so need to use rpm..

[Chimo]

Even with a schwitzer turbo mine used to run out of grunt at about 2 to 2500 rpm. Somewhat embarrassing.

Amazing what a difference there is if one replaces all the rubber fuel lines before the fuel filter so the engine does not get to suck air into the lines at higher revs.
Apparently the fuel pump didn't like air bubbles mixed in with the fuel either!

My mechanic has nearly finished his 4.2 rebuild and he is expecting 6 to 6500 rpm. I'll continue to accept my 4 to 4500 rpm and save a heap of $s.

The old rubber fuel lines looked good to me but I guess thats why the guy who services mine services mine.

Cheers
Chimo

[DX grunt]

Thats interesting. I turn mine to 4200-4500 each time I drive it. My redline on my dash is at 4500.

My redline on my dash starts at one notch over 4500, so I'm guessing it's either 4500 or 4600.

Mine's a 2005, 4.2 TDi, ute.

Rossco

[the evil twin]

My redline on my dash starts at one notch over 4500, so I'm guessing it's either 4500 or 4600.

Mine's a 2005, 4.2 TDi, ute.

Rossco

Yeah, but your needle doesn't move 'cause it's rusted stuck to the zero stop (tish boom)

[SKID]

Will it free rev to 4000rpm?
Mine will free rev to 4000+ but when driving am flat ouot getting it to 3000 and it feels like its missing or starving for fuel.....