TD42T power (or lack there of...)

Hello,

I have just got a dyno report on the Patrol (99 GU, TD42T, 3in exhaust, std turbo, std intake, no intercooler, 33in muddies).

History...

The car has been up north for about a year and it has finally come back to Brisbane for a little break, though it goes back in April. So some time to fix some things. I noticed a lack of power since I left it and my boost gauge seemed to confirm my feeling.

I would normally go to 12 PSI and sit there the entire way up the rev range, now it dips to about 9-10 about half way up and stays there.

I thought that It should have a dyno and see if they could figure it out. I was told that if there was anything wrong that they would let me know but it sounds like it just needs a tune.


So... from a sluggish 94.9hp to a whopping 111.6hp. I don't know a lot but this seems really low. $250 later I was told that it may need a fuel pump soon, but that it was all good.

I thought that I would check my facts before talking to this dyno shop again.

Any opinions?

Thanks, Cam

That's not bad, you shouldn't be upset with that

yep thats not too bad, if the pump is tired then that will effect it too but i like winnie wouldnt complain about those figures.

sooooo 111.6HP is approx 83KW, doesn't sound that great to me

would be much better if it was 111.6 KW

Quote:

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Originally Posted by Clunk

sooooo 111.6HP is approx 83KW, doesn't sound that great to me

would be much better if it was 111.6 KW

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On a completely standard motor though, it's not bad at all.

Righto.. looks like I may have jumped the gun.

The car lives most of the year a long way from a mechanic or workshop. I would like to get running spot on before it leaves me again. Are there any better things to do while replacing a fuel pump. I would prefer to take it to a place that can tune to the new pump without charging me another $250.

Any ideas, perhaps small mods while i'm at it?

Quote:

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Originally Posted by NotTortoise

Righto.. looks like I may have jumped the gun.

The car lives most of the year a long way from a mechanic or workshop. I would like to get running spot on before it leaves me again. Are there any better things to do while replacing a fuel pump. I would prefer to take it to a place that can tune to the new pump without charging me another $250.

Any ideas, perhaps small mods while i'm at it?

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Where are you taking it for a new fuel pump? A new pump is not cheap (if you get it under 2k you're doing well) and it will need to be tuned to match.

Once again, jumping the gun...

This is my first diesel and I had no idea that the pump is so much more involved. The last fuel pump I replaced was on my HG Kingswood. Is there anything that you can do for a "maybe be replaced in the future" fuel pump?

No mate nothing you can do, I use two stroke mineral oil in my fuel 200-1 mix to quieten
mine down so that may or may not help you.

Quote:

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Originally Posted by NotTortoise

Once again, jumping the gun...

This is my first diesel and I had no idea that the pump is so much more involved. The last fuel pump I replaced was on my HG Kingswood. Is there anything that you can do for a "maybe be replaced in the future" fuel pump?

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Is the noise that you are trying to quieten down a slight ticking noise by any chance? I got an opinion from a local mechanic up north and he told me that it was a Nissan noise and "nobody knows from where or why"

When were the valve clearances done??

The pump as you mention is completely different to your old Kingswood and is a complex bit of kit.

My TD42 with a 10mm pump is putting out 135hp.

you could try running Castrol T2 in the fuel,
It will lubricate and hopefully quieten things down for you