dsmulla
15+ Year Contributor
- 200
- 1
- Jun 27, 2007
-
Scarborough,
Ontario_Canada
Ok guys, I was seemingly having boost problems this past summer as the turbo (PTE 5031RE BB) was not pushing past 10 psi. The problem started to occur gradually as every week through almost all of summer, the boost kept dropping.
After a thousand boost leak tests, compression tests and you can name any test, I finally found something fishy. The compressor housing where the inlet is, had some minor shave marks, meaning shaft play. Now, the shaft play is still the same as when I bought the turbo intially and I know ball bearing turbos do consist of some play. Having said that, its the same amount of play.
Some information about the setup:
-SS oil feed was taken from the oil filter housing with an inline filter in between
-I do understand opinions have changed as many BB turbos should be fed from the head because of more flow but I just followed the thread in tech section referenced at the bottom
-the coolant lines were setup just the way explained in blcknspo0ln's thread (great job by the way):
http://www.dsmtuners.com/forums/art...dbb-pte-5031-50-trim-turbo.html#post151422145
The turbo had barely seen 1800 kms. Two questions: could this be the cause for my boost problems explained above? With the amount of shaft play that its suppose to have how can the compressor housing start to shave?
I have also attached some pictures, so you guys can take a look. You'll see in most of the compressor housing pictures the shave marks that I am talking about. Its pretty clear if you look closely.
Thanks for the help in advance and all help is appreciated!!
-Osman
After a thousand boost leak tests, compression tests and you can name any test, I finally found something fishy. The compressor housing where the inlet is, had some minor shave marks, meaning shaft play. Now, the shaft play is still the same as when I bought the turbo intially and I know ball bearing turbos do consist of some play. Having said that, its the same amount of play.
Some information about the setup:
-SS oil feed was taken from the oil filter housing with an inline filter in between
-I do understand opinions have changed as many BB turbos should be fed from the head because of more flow but I just followed the thread in tech section referenced at the bottom
-the coolant lines were setup just the way explained in blcknspo0ln's thread (great job by the way):
http://www.dsmtuners.com/forums/art...dbb-pte-5031-50-trim-turbo.html#post151422145
The turbo had barely seen 1800 kms. Two questions: could this be the cause for my boost problems explained above? With the amount of shaft play that its suppose to have how can the compressor housing start to shave?
I have also attached some pictures, so you guys can take a look. You'll see in most of the compressor housing pictures the shave marks that I am talking about. Its pretty clear if you look closely.
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Thanks for the help in advance and all help is appreciated!!
-Osman
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