What Size exhaust Niss 3.0TD

3inch.
and add a Dtronic at same time.

An interesting read. d tronic and 3" exhaust review

Leroy

mmm looks like the 3inch is the go, I am consdiering doing this, whats the cost for a 3"mandrel bent jobbie for the 3.0GU??

I've just been to that link. That's all very well and good, but if I fit a DTronic to my 3.0 patrol, could the guys at safari tell me how long it will be before my motor goes KABANG!!

And if it does, is Nissan going to want to know me when my car turns up on the back of a truck?

Cheers,

Muzz

Shep,

I am looking at this at the moment and have most likely decided, with the help of the performance exhaust man, to just replace the llaarrggee muffler next to the tailshaft with a straight thru 2 1/2 inch sports muffler, leaving the original resonator and pipework. This can be done for around $200, and then if it doesn't work as planned, will allow for a complete exhaust system change using the new sports muffler just purchased.
According to the specialist, it is the main muffler that causes all the restriction in the system, and de-restricting this will bring all the benefits that come with a free flowing exhaust. Replacing the pipe itself with a slightly larger size pipe would most probably add 1/2 a kw in extra power.

$200 for new muffler fitted
$800 for complete exhaust fitted

The only remaining question - $600 for 1/2 a kw - do I bother?

Mic

Wasn't the drop pipe from the turbo more restricive on the 3.0 or was that on the 4.2? I remeber a post where someone mentioned they changed the drop pipe and this made the most difference.

Leroy

I got rid of everything fatory and put on a free flowing muffler yes it made a difference then added a snorkle a bit more on tap and then a uni filter still some more there. So with doing this i got a bit more power and is a bit better on fuel too. How much more do you out of a 4 cyl diesel. Also be carefull the 3.0l has a nasy habit with #4 piston grabbing dont push it to hard.

Shep,

The 80 series went a Nissan when I got rid of all the mufflers and had a 2 1/2' systen put through. Had the pipe as straight as possible and that made a big difference to low down torque.

I only said that it went like a Nissan to make you feel good, but it had enough grunt to pull the bend out of a river.

Wayne

Shep, I was going to go down the same road and spoke with Motsons in Brisbane as they have done a lot of work with 4.2l and 3.0l engines. Advice from them was that there was no real gain in fitting a larger exhuast.
I was looking mainly at trying to reduce the exhaust temperature. I would be interested in hearing from anyone who has actual dyno figures on the benefits of fitting larger exhausts to 3.0l Patrols.