Mbeas96
Member
- Joined
- Aug 7, 2017
- Location
- Charleston
TL;DR - rebuilt 16t, upgraded to 19t wheel and cover, now blowing ton of oil out of turbo.
Not to long ago I was having an issue with burning oil, mostly idling (smokey exhaust) but also on decel after a hard pull. Removed the turbo and found some oil reminants in and around the exhaust housing. Not leaking oil from any seals, I figured it was time for a rebuild.
Bought a genuine Mitsubishi tdo4 rebuild kit for the superback turbo and a bigger compressor wheel and housing (19t upgrade). Took the CHRA to a local machine shop and he clearanced the compressor wheel lip 1mm all around. 56mm --> 58MM.
Brought everything out on my kitchen table...and watched step by step from ARD tuning on YT, how to rebuild it. Everything went exactly as planned. There is still some side to side play, not enough to hit the housing, and a smidge of in out play. Wheel spins freely and I was stoked.
Put it on, along with an angled housing and new downpipe. And within 500 miles, I've lost 2 quarts of oil, but this time it's blowing out of the compressor housing into the intake. Also LOTS of oil in the turbo inlet hose from the pcv box.
Hoping the drain was clogged or I forgot to put the restrictor in the feed, ripped it all apart to find nothing out of place. Drain completely clear and restrictor on the feed is there. I've cleaned the pcv system and ensured no blockages, added a catch can in the mix and hasn't changed the oil spewing in the slightest.
As of now, after putting it back together, again, I didn't changed some seals that I removed and now is leaking oil out of the engine as well. So not drivable at this point.
Besides leaking oil, what could've happened inside the turbo to make it launch oil like crazy? Is there a certain bevel or similar on the compressor side lip of the CHRA? Piston type rings on the shaft didn't seal and is just letting all the oil thru? My current thought it to pull and reseal the motor and put a stock 16t back on...
Not to long ago I was having an issue with burning oil, mostly idling (smokey exhaust) but also on decel after a hard pull. Removed the turbo and found some oil reminants in and around the exhaust housing. Not leaking oil from any seals, I figured it was time for a rebuild.
Bought a genuine Mitsubishi tdo4 rebuild kit for the superback turbo and a bigger compressor wheel and housing (19t upgrade). Took the CHRA to a local machine shop and he clearanced the compressor wheel lip 1mm all around. 56mm --> 58MM.
Brought everything out on my kitchen table...and watched step by step from ARD tuning on YT, how to rebuild it. Everything went exactly as planned. There is still some side to side play, not enough to hit the housing, and a smidge of in out play. Wheel spins freely and I was stoked.
Put it on, along with an angled housing and new downpipe. And within 500 miles, I've lost 2 quarts of oil, but this time it's blowing out of the compressor housing into the intake. Also LOTS of oil in the turbo inlet hose from the pcv box.
Hoping the drain was clogged or I forgot to put the restrictor in the feed, ripped it all apart to find nothing out of place. Drain completely clear and restrictor on the feed is there. I've cleaned the pcv system and ensured no blockages, added a catch can in the mix and hasn't changed the oil spewing in the slightest.
As of now, after putting it back together, again, I didn't changed some seals that I removed and now is leaking oil out of the engine as well. So not drivable at this point.
Besides leaking oil, what could've happened inside the turbo to make it launch oil like crazy? Is there a certain bevel or similar on the compressor side lip of the CHRA? Piston type rings on the shaft didn't seal and is just letting all the oil thru? My current thought it to pull and reseal the motor and put a stock 16t back on...