Thread: Isuzu Turbo Manifold

Originally Posted by lokka

What do you mean by sticky outy ? Have you got a pic ?

Dose the outlet sit vertical or flat and is it the IHI pattern
flange

PM'd

Originally Posted by lokka

Im prety sure dougal's has been cut and welded to get the downward faceing flange .

Yes, that's right.
Some here have referred to it as "the army manifold".

There's a version of that manifold with a T2/T25 stud pattern. The Industrial 4BD1T/4BG1T uses one of those, but I don't know which pattern. The last 4BG1T industrial I saw had a T04 MHI turbo.

Hey lokka
Can't tell u anything about the manifold because the one I hav is the original manifold modified to fit a td5 turbo so will not be the same as any other out there but as for turbo rebuild kits I couldn't go past MTQ systems (i think its called systems) down in vic they are very helpful and for a rebuild kit for a gt2052 it was only $140 to my door but then again there is the much disputed balancing problem if u pull it apart yourself.

Originally Posted by c.h.i.e.f

...the one I hav is the original manifold modified to fit a td5 turbo ...

That may be part of your problem. How about you post some pics/specs of your setup in the thread you started - then maybe we can tell you why your engine doesn't eat 300tdis for breakfast (and lunch and dinner) like it should.

Originally Posted by isuzurover

That may be part of your problem. How about you post some pics/specs of your setup in the thread you started - then maybe we can tell you why your engine doesn't eat 300tdis for breakfast (and lunch and dinner) like it should.

On that note how well will the standard IHI/garret go with a WTA cooler what sort of boost would i expect to get out of the standard set up or am i better off using the nissan S13 turbo or something better as i need to reco the turbo i have maby getting another that will perform better may be worthwhile
As for making it fit the standard manifold wont be hard and neither will be making it fit the engin bay i have allredy worked out how to run the dump pipe inside the chassis rails rather than in the wheel arch

Originally Posted by lokka

On that note how well will the standard IHI/garret go with a WTA cooler what sort of boost would i expect to get out of the standard set up or am i better off using the nissan S13 turbo or something better as i need to reco the turbo i have maby getting another that will perform better may be worthwhile
As for making it fit the standard manifold wont be hard and neither will be making it fit the engin bay i have allredy worked out how to run the dump pipe inside the chassis rails rather than in the wheel arch

Turbos have advanced a LOT since the 4BD1s were produced. However the standard turbos should boost to ~16(?) psi and give good performance.

I have a turbo from an S14 silvia (not S13) - which I am happy with. However if I was doing it again I would probably try and find a VVT turbo of appropriate size. A VVT should (in theory) boost earlier and maintain boost over a wider rev range.

Originally Posted by lokka

............ i have allredy worked out how to run the dump pipe inside the chassis rails rather than in the wheel arch

If you have the truck sump then there's plenty of room for the exhaust on the inside of the chassis.
I made a header pipe from the turbo manifold, but if I was to do it again I would remove the turbo exhaust manifold and make up a whole new one as indicated in the second pic. At the time of my conversion I didn't realise that the manifold could be replaced on the turbo. It was the first turbo I'd ever had, so I just didn't know then what I know now.

Cheers, Murray

Originally Posted by rijidij

If you have the truck sump then there's plenty of room for the exhaust on the inside of the chassis.
I made a header pipe from the turbo manifold, but if I was to do it again I would remove the turbo exhaust manifold and make up a whole new one as indicated in the second pic. At the time of my conversion I didn't realise that the manifold could be replaced on the turbo. It was the first turbo I'd ever had, so I just didn't know then what I know now.

Cheers, Murray

I still have the winged sump. I have a 3" mandrel bent exhaust and a custom dump pipe, which just manages to squeeze between the bellhousing and the firewall.

I got Agrojnr to laser cut me a flange for the dump pipe, then the exhaust guy did the rest (good job too!).



You will also notice the water cooling on the side of the turbo is not connected. It is not needed on (mechanically injected) diesels.