So a little upgrade from my car. About a month ago or so my car suddenly stopped boosting and the fear was that the exhaust manifolds failed.
It happened to me few years earlier, so it was with similar symptoms. After tearing car and the turbo apart my first conclusion turned out right.
So now it was finally time to upgrade manifolds and the turbo. All that was on my to do list in next few months so I wasn't that sad about it.
Exhaust manifolds were planned to be log type for space saving and better flow. ID of the manifold runners are 38.3mm, so plenty of flow
available there. Also the up-link pipes and the collector was upgraded with the same sized pipe.
GTX2863R turbine was totaled but bearings was saved because the metal pieces from manifolds was jammed between housing and the wheel -
not spinning the turbo. So now it was again time to upgrade turbine wheel to the bigger one. Only turbine that was available such a shot notice
was GT30R 90-trim whee. It wasn't my first option, but as it turned out it works perfectly! Much better than small GT28R turbine. Spools faster
and has almost 0.7bar less EMP. It's almost IMP=EMP. So now this hybrid has 47.1/63.4mm compressor with 56.5/53.6mm turbine. Car never felt
this good with GTX28, so I'm very happy about this.
Here are few videos and links about the result:
https://www.youtube.com/watch?v=6MtdP6Gs6ME - Manifolds project video with pictures.
http://evvk.1g.fi/kuvat/Diudi/pakosatsit/English/ - just pictures
https://www.youtube.com/watch?v=q0IkLOYcTzs - first runs I videoed.
https://www.youtube.com/watch?v=cHAQpakTThE - 4th gear spooling test.
