td05 16g (small)
when I got my 16g, i got it with a 7cm exhaust housing. I honestly didn't know there were different types of td05 housings... my mistake. with a 7cm housing, the turbo wouldn't spool up until about 5000 rpm's... VERY dissapointing when upgrading from a td04 15g that spooled up at 3000 rpm.
We finally found out that I screwed it up, so we swapped out the 7cm housing with a stock DSM td05 6cm housing and it was worse.
turns out that the turbo came with everything matched to the 7cm housing which means that the wastegate actuator was lengthened slightly, leaving the wastegate slightly open causing precious exhaust gases to exit during spoolup.
using expert knowledge and care I remounted the same wastegate with some longer bolts and some washers between the wastegate actuator and the turbo to pull the wastegate closed tightly. worked like a charm.
with the wastegate problem fixed I am hitting full boost (19psi) at 3400-3500 rpm's. I have usable boost at 3000 - but not much.
with a rolling start in 1st gear I am getting full boost at 6K rpm.
when on the freeway in 4th gear at 3500 rpm, the 16g takes almost 2 seconds to spool up to full boost (19psi).
Installing the 16g was more work than the 15g due to the changes in exhaust housing and the coolant and oil lines.
these parts can be found here:
http://www.4g61t.com/forum/viewtopic.ph ... um=2&por=1