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Z31 Turbo Engine + Gearbox rebuild
- Thread starter rhanagar
- Start date
rhanagar
Well-Known Forum User
Got me a set of core plugs ... and went to work with them. Popped out the old and tapped in the new using a socket and hammer (as advised by many a mechanic). Even used a bit of the old blue sealant to make sure.
I then turned my attention to the turbo. I knew it was tired and suspected that it was leaking oil a bit from tired seals. However on further investigation I found an even bigger issue that will definatly put a hamper on progress on that front.
As you can see there is a ruddy great crack in the casting eminating from the wastegate actuator port. To be honest I think that this will put this little fella beyond reapir and I am defianatly not happy with putting it back on afer all this work has been done only to have it disintegrate on me. For all I know its fracturing in other places I cannot see and then it will be dead for sure and might take something out with it.
I then turned my attention to the turbo. I knew it was tired and suspected that it was leaking oil a bit from tired seals. However on further investigation I found an even bigger issue that will definatly put a hamper on progress on that front.
As you can see there is a ruddy great crack in the casting eminating from the wastegate actuator port. To be honest I think that this will put this little fella beyond reapir and I am defianatly not happy with putting it back on afer all this work has been done only to have it disintegrate on me. For all I know its fracturing in other places I cannot see and then it will be dead for sure and might take something out with it.
SeanDezart
Well-Known Forum User
Damn ! Sorry Neil........but when adding a bigger turbo will you then up the pressure towards getting the magic 300 bhp ?
rhanagar
Well-Known Forum User
No worries Sean. I cannot blame you for anything. To be honest the seals have been leaking a bit and this sort of thing can only be found if you happen to think "I know I will take the turbo off and disassemble it because I have nothing better to do"
And yes with a bigger turbo I will be upping the boost to the magical 300 bhp
And yes with a bigger turbo I will be upping the boost to the magical 300 bhp
SeanDezart
Well-Known Forum User
Mr F did have a brand new one for sale not long ago if you wanted the less expensive route..........but I know what I'd do..............
rhanagar
Well-Known Forum User
Mine wouldn't with that crack in the housing, and with leaking oil seals then I would be surprised if it lasted much more on the stock 4.5 psi.
Nah with the ideas in mind and also wanting a reliable 12 psi boost having a larger mill that doesn't have to strain to give consistant response I will be happier with the T28. As said they are common as muck and also i need to replace it anyway. Might as well get a decent second hand one and replace the seals while I am at it.
JakTheRuby
Club Member
Having been a busy bee for the last four months, I've only just spotted and read this thread but wow, that is awesome! You're doing a fab job there matey. Keep up the enthusiasm and hopefully we'll get to see it out to play in the summer!
rhanagar
Well-Known Forum User
Cheers buddy. Next time your about in Norwich you should pop round and see the progress in the flesh. Yarmouth is only down the road
