About two weeks ago on a 4wd trip, the turbo blew an oil seal and rendered itself useless.
I bypassed the turbo using a old pod filter and was able to drive the car home / around.
In my limited time, i was not able to find a second terrano turbo unit. There was a couple of new ones on ebay for around $550.
I ended up picking up a t25g silvia turbo, from a sr20det for $100. These turbos can be found cheap enough secondhand and are just about always available.
The turbos are slightly larger than the stock unit, the stock it a HT12 Hytashi or gt20 frame - so the t25g is pretty much the next size up.
both turbos are a T2 flange, so it bolts onto the exhaust manifold just fine. You will need to rotate the exhaust and intake housing as the terry one is vertical and the Silvia is horizontal. This is to make sure the oil drain is facing down.
The oil feed on these uses a bigger banjo, so i had to have the oil feed modified.
The water lines are the same, so these bolt up.
The oil drain bolt holes don't line up as they are spaced further out, but the drain hole is the same size, so using a larger bit i re-drilled out the mounts until i was able to bolt it in.
the intake is different, so i had to make a new intake pipe. The intake uses a 2 bolt flange instead of the terranos 3 bolt.
The exhaust flange is different, and because the turbo is rotated from a Silvia configuration you cannot use a Silvia dump/front pipe...you will need to make one, as i did.
It was a crap load of work, but at least i became a bit more familiar with how to use the welder and did learn allot doing it.
Removing the old turbo system, just about every single stud snapped, that's even after pre-soaking for a long time in wd40 - this made the job even worse as removing studs is a PITA.
