Turbo Parts Names

[Rugby]

I am trying to figuar out what the names of the parts inside a turbo are. After my oops Bison has given me a list of parts buy I am not sure what I have. I don't want to keep bugging him.

If I was to order this
stock type 3 piece carbon seal thrust kit with 270* bearing and thrust collar
would I need this
dynamic seal thrust kit with thrust collar and comp side sealing ring with 270* thrust

Is there a reason to convert to dynamic thrust from stock? What is stock called if it is not dynamic thrust?

Sorry for all the newbie questions but this is my first turbo rebuild and I want to make sure my parts order is correct the first time.

I have not dissembled the cassette yet. I have removed the the turbine and compressor wheels. I will finish disassemble this weekend.

Brandon

 

[turbotroy]

I've been a mechanic for a good part of my life but have no clue about turbo nomenclature. I've only been on the site a few years (tho I lurked a few before that) and I've read lots of Bison's stuff and I'm sure he will take care of you on this. May want to do it on PM's, or may want to do it as a thread so everyone else can learn something too

 

[bison]

Stock is a 4 piece carbon seal (carbon seal o-ring, spring, spring spacer). Kit uses a positive style carbon seal to control oil. You would not need any dynamic seal components if using a carbon though the thrust bearing is the same. The dynamic setup uses a sealing ring and relies on slinging to prevent oil leakage into the compressor cover and is not a positive seal. Any setup that exposes the compressor cover to vacuum needs to have a positive carbon seal. Reasons to switch from a carbon seal to a dynamic seal are first and foremost usually the stock back plate is worn out where the o-ring part of the seal rides and two dynamic has less drag. If your backplate is worn your results will be variable simply replacing the carbon seal. Converting and using a new back plate will give a much more consistent result. Either could have 270 or 360 degree thrust. More thrust surface equals higher thrust load potential without bearing failure. 360 degree carbon seal is expensive because there is only one good one out there to my knowledge. Additionally you will need to carefully media blast all the carbon off the turbine and be sure the ex ring groove is not out of spec (which they commonly are if there was a thrust issue) or it will quickly absorb thrust and overheat and fail to seal.

 

[Rugby]

Thank you. I could not come up with a good explanation using google.

Brandon