Thread: Turbo arrived in the mail

It's probably just paint pen or the like, used in the balancing process. I have this turbo and it is indeed factory.
I'd have to say I'd rather it than nothing, but if your starting from scratch then get the T25. At least it will producce some boost. The T3 (I think...Doug's will know) dosn't produce much boost and is very dependent on fueling. And a three inch exhaust will make it hunt at lower RPM's. It won't start producing boost untill around 1800 rpm and runs out of steam at around 2800rpm.
Like I said, untill I have time to fit my new turbo, it'll do. But they arn't ideal.
But I am in darwin, and the heat kills alot of the performance of turbos up here,

Hi Guys,

I think I have the same or similar turbo fitted to my 4BD1. It is a Garrett and has an M24 marking. On the exhaust side the housing has "T 731" cast on it.

I didn't fit the turbo and I now need to change the position of the outlet that provides air to the intake side. To me it looks like I just undo the 4 bolts that go into the exhaust impeller casting, rotate the intake side 180 degrees and bolt it back up. I've never pulled one of these things apart, so before I do I was wondering whether anyone knows:

a) am I right or does it only fit one way?
b) is this as simple as it looks or is there some hidden trap to make it fiendishly difficult and/or certain to destroy something valuable in the process?
c) will I need to buy any new seals or other parts before I can put it back together?

Looking at it I can see a couple of problems with some of the things bolted to it that I will have to reposition, but my main concern is the turbo itself. Any info would be really helpful.

Cheers, Dave.

Compressor sides (the cold side) are usually free to rotate. Just loosen off the bolts and spin it. You might need to get creative with the wastegate bracket afterwards.
Also check any holes you remove bolts from for the wastegate bracket. Sometimes they go right through into the housing so a missing bolt means your boost can escape.

Sorry Dave, my mind was on other things when you called. That, and my turbo has 6 bolts...

Dougal has the answer. I had to cut and shut my wastegate actuator after rotating mine.

Originally Posted by isuzurover

Sorry Dave, my mind was on other things when you called. That, and my turbo has 6 bolts...

Dougal has the answer. I had to cut and shut my wastegate actuator after rotating mine.

Oh yeah, if anyone is trying to identify T28 turbos, 6 bolts holding the exhaust housing on means you have a ball bearing turbo. The journal bearing versions have 4 bolts.

Double post.

Originally Posted by Larns

And a three inch exhaust will make it hunt at lower RPM's.

What exhaust would you recommend Larns?

What exhaust set ups do others have out there in Isuzu turbo land?