TD42T power (or lack there of...)

[NotTortoise]

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

[Winnie]

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

[Stropp]

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.

[Clunk]

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

would be much better if it was 111.6 KW

[Winnie]

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

would be much better if it was 111.6 KW

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

[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?

[Winnie]

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?

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.

[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?

[Stropp]

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.


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?

[NotTortoise]

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"

[Bloodyaussie]

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.

[threedogs]

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