Thread: Disco TD5 Turbo Upgrade

Boost on mine at the turbo outlet in stock form was limited to 19psi in the higher gears but got up around 22 in 1st & 2nd before boost was able to be limited. With a Toombie IC (& ecu upgrade) the max boost is 17psi at the turbo due to better IC flow but I was not able to measure the pressure at the inlet manifold, which I guess could be 1 or 2 psi lower.

I leave my engine cover off for easy inspection for leaks and couldn't detect any difference in engine noise levels on vs off.

Nice job!

I'm dubious about the torque figure because of the torque multiplication in the torque converter. Still it's no slouch on the road.

My turbo setup takes it's boost signal from the intake manifold now so I imagine that 16PSI figure is what I've got at the manifold. I reckon that's where the dyno guy probably tapped in. I deleted the port on the pipe from the turbo as I'm not using the factory boost controller.

I'll be fitting a boost gauge as I'm curious as to what it's doing. It made about 87KW at the wheels when it was running the higher boost.

I don't reckon I'll put the cover back on. I like the look of it now and there's no noticeable difference in noise.

I'll have to speak to Tombie about a tune.

Cheers

Michael

Thats right, that are wheel power figures, not at the flywheel. Torque goes up due to gearing and power goes down due to driveline losses.

Sounds good Mick,

I'd initially suggest 17-19psi mate...

We can chat about chipping if you like!

0423 126 538

Originally Posted by Disco Mick

Hi Turbocharger, Looks like you are having fun with your install. I love doing my own R&D, experimenting and developing stuff. However the Disco is my daily driver so I wasn't keen on messing round trying to get something going. I wanted something reliable and proven.

My VNT runs off manifold pressure working on a diaphragm actuator. The guy that supplied the turbo has worked out the set up. I reckon he's spent a fair bit of time and R&D getting the right combination of components together to make it work.

I'm happy to leave that part of the process up to him. I figured it was something that'd be easy to stuff up and possibly do major damage. Paying for his 35 years experience saves me the headache.

From what the turbo guy said it really needs to be set up on a Dyno though. As I understand it if not done right the turbo can just jump straight to 20 or 30 PSI of boost.

I'll stick with the fabricating side of it as I do an OK job for a back yard workshop.

I don't have an EGT or Boost gauge but I plan to fit both in the future.

Cheers

Michael

Hi
Let me first off all say that you have done a fantastic job with your turboconversion.
I also want to do this conversion, and may I ask,
Where did you buy the turbo ?

Regards Bjorn from Norway

GARRETT turbos for Nissan passenger cars and vans - Applications - TurboMaster

GT2052V
Look carefully at the applications.

I've just recently picked up a couple out of Australia and will likely be in the market for more once I get the 300 TDi Manifold and other kit built.
I'll also make an attempt to duplicate Mick's beautiful work on my TD5

Hi Bjorn,

I got the Turbo from Turbo Engineering in Thomastown. Turbo Engineering (Thomastown,VIC)

However with the freight from Australia you might be better to source one from one of the UK shops.

Thanks Revor, Happy to read I've inspired someone else to have a go.

I haven't posted an update for a while. I've been driving it for a few weeks now and it seems to go well. I've just been sorting the bugs out.

I had a persistent oil leak that I was having trouble finding the source of. It was really starting to give me the *****s. I went looking for it again on the weekend and a mate of mine spotted where it was comming from.

When I removed the heat exchanger for the EGR there are 2 bolts that go into the front of the head that retain it. One of these bolt holes was weeping oil. I reckon when they've drilled it and tapped it in the factory it's gone deep enough to get into one of the oil return passages where the oil drains back to the sump. I had always had oil on the front of the motor and I thought it was the cam plug. I reckon it's been this bolt all along. It was an easy fix. I just got an 8mm bolt and screwed it in there with a copper washer on it. I don't think the original bolt and heat ecxhanger plate would have provided much of a seal against the oil. I took it back down to the car wash and gave the engine bay another good clean. Hooray!! no more drips on the garage floor.

This may be a common problem and worth checking if you have a mystery oil leak from the front of your motor.

I've replaced the rubber hose from the turbo with a laminated silicone jobbie. I'll be able to turn the boost up now. I think I'll build a new pipe to go from the turbo to the IC tohough as I'm not real happy with the fit.

I've ordered a EGT and will be fitting that in the next few weeks.

Pics to follow.

Cheers

Michael

Good news Michael! And good to hear from you.

My aim is to help the bottom end torque by getting the boost up at low r's so I can eliminate the need to swap out every gear on the truck after the tranny (on the 300) The TD5 could benefit with some grunt down low although this car has Maxi drive low range gears so it's not a problem in low range. I'm thinking pulling better from the bottom will save the clutch, some fuel and some aggravation on my wifes part (her Car) as the low RPM surging on these motors can be annoying. (then we'll put a tune to it and she can get more tickets!)

Again.. nice work!