Upgrade nissan turbo

Ring United Fuel Injection.
The are out along the Great Eastern Highway, near A.V. Trucks.
Wea are planning on doing the Turbo/Exhaust upgrade with them early next year, when our Patrol has a few thousand k's on the clock.

meow.

rick.

Mike Vine's turbo's in Brissy gets good figures from their upgrades. I have in excess of 80000km on a stage 2 MTQ upgrade and 200000 before that on a stage 1 upgrade so make that 285000km in total and no engine reliability probs to speak of. 4.2's tend to run hot when pushed and the upgrade didn't change this on my truck.

You will look back, but only to see where your mate is lol!!!!
Regards Trevor.

You'll probably find that most of that claimed increase is in a larger exhaust.
I have not had the turbo modified, but have put on a 3" exhaust and dump like you, but also increased boost and upped fuel to match.
I found the greatest difference was buy far in the new, larger exhaust.
I have been considering getting Turbo changed by Denco or modded by MTQ, but have not come across anyone who has changed exhaust and run with that for a while, and then had turbo modded to see if the turbo mod any discernable difference. Personally, I think I would spend money next on intercooling for the next level of power (not that it's really needed!) before friggin around with a perfectly good factory turbo. (Unless I can be convinced otherwise).

Denco, what can you tell me about the turbo changeover for the mitsu unit vs power increase- but seperate from any other mods like exhaust??? (I am keen to know- ie: bang for buck?)

well rang United fuel today they said $1700 to upgrade the turbo (stage 1 upgrade ) fitted where they just change the propeler and leave the compressor side of things

also ask MTQ they quoted $1300 for the stage 1 upgrade exchange only or stage 2 for $1500 exchange and have to fit it myself he also metioned that the stage 2 only gives 5% more than the stage 1

all of the above only includes the turbo no exhaust

anyone know what is involved in removing old one and bolt on the new one ( can a Dummy do it ......lol)

any Suggestions would me good

I have done some research into an upgrade for the 4.2 and you would be better spending more money and getting a roller bearing turbo. These spool up a lot quicker than normal turbos and you get better low down response.

The problem I believe with some of the original turbos is when they machine the exhaust housing to accept the larger size wheels they can crack after time. Not sure if this is a common thing but have been told this has happened.

There are plenty of companies out there that do 3" exhaust kits which are easily fitted. The time consuming part is replacing the dump pipe, there isn't a lot of room to swing the spanner.

If you upgrade the exhaust and then have it tuned make sure they adjust the fuel boost compensator to give more full at low boost, this will also help with better low down power.

I went down the track of fitting the Denco kit (Schwitzer turbo, about half as big again that the undersized original Nissan 4.2turbo).

This was bolted up to the 3" mandrel-bent exhaust which I already had fitted before. Goes really well and I'm so glad I didn't go down the track of getting the guts bored-out of the original turbo.

Cost about $2,500-.

All academic now anyway, as I am gunna sell the Patrol soon due to having just arranged to buy a Patrol dual cab conversion with 6.5 Chev donk.