building one good stock turbo, with two bad stock turbo's...?
#1
building one good stock turbo, with two bad stock turbo's...?
My old turbo couldn't take the abuse of running 13psi after 150k miles, so the compressor wheel started rubbing/hitting the inside of it's housing. The angled scratches visible upon removing the TID told me this.
So, I found a guy who vouched for a lower mile s4 turbo that he said had very little shaft/end-play and didn't blow oil. Well, it's day two after finishing the install yesterday and I just noticed some nice plume's on greyish/whiteish smoke coming out of my exhaust as it was idling. Since I hadn't noticed it before, I walked around to the back of my car and just watched as thick clouds puffed out and were clearly visible in the bright sunshine. I couldn't believe it. I got in my car and revved it up and to my dismay more smoke. I drove around the block and yes, more smoke... Bad.
So my question is, I have two bad stock turbo's, but they're bad in different ways... Can I disassemble them and make one good turbo? I've never really taken apart a turbo, but if I know it's possible without having to undertake a full rebuild, then I'll do it. What parts should I use from what turbo to make the "good" one?
So, I found a guy who vouched for a lower mile s4 turbo that he said had very little shaft/end-play and didn't blow oil. Well, it's day two after finishing the install yesterday and I just noticed some nice plume's on greyish/whiteish smoke coming out of my exhaust as it was idling. Since I hadn't noticed it before, I walked around to the back of my car and just watched as thick clouds puffed out and were clearly visible in the bright sunshine. I couldn't believe it. I got in my car and revved it up and to my dismay more smoke. I drove around the block and yes, more smoke... Bad.
So my question is, I have two bad stock turbo's, but they're bad in different ways... Can I disassemble them and make one good turbo? I've never really taken apart a turbo, but if I know it's possible without having to undertake a full rebuild, then I'll do it. What parts should I use from what turbo to make the "good" one?
#4
I'm a boost creep...
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Read this then decide what you want to do:
https://www.rx7club.com/attachment.p...chmentid=76207 (Word doc)
https://www.rx7club.com/attachment.p...chmentid=76207 (Word doc)
#5
Sharp Claws
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i don't think they sell the rebuild kits anymore, maybe Brian@BNR would have some insight on where to get pieces for a rebuild or sell you a kit himself. he said he could piece together a kit for me a while back but i went with a hybrid instead.
they aren't complicated to handle but some pieces like the carbon seal you may want a machine shop to install.
they aren't complicated to handle but some pieces like the carbon seal you may want a machine shop to install.
#6
Originally Posted by NZConvertible
Read this then decide what you want to do:
https://www.rx7club.com/attachment.p...chmentid=76207 (Word doc)
https://www.rx7club.com/attachment.p...chmentid=76207 (Word doc)
I guess my main concern when I created this thread was not knowing whether or not the turbo needed to be balanced after swapping pieces etc.
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#8
Originally Posted by Karack
it is archived, durrr....
linked in the FSM link.
balancing is ideal but really only necessary for high performance applications and larger compressor wheels, the stock turbo is hardly a performane monster but not balancing it will decrease its lifespan.
linked in the FSM link.
balancing is ideal but really only necessary for high performance applications and larger compressor wheels, the stock turbo is hardly a performane monster but not balancing it will decrease its lifespan.
#9
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Originally Posted by Karack
balancing is ideal but really only necessary for high performance applications and larger compressor wheels, the stock turbo is hardly a performane monster but not balancing it will decrease its lifespan.
#10
Sharp Claws
iTrader: (30)
if you say so.
i would much rather think of it like pulling apart an engine or a gearbox assembly and putting it back together without inspecting or measuring anything. it is just an assumption it was right to begin with. you think the fans never get out of balance? that just because everything is aligned the way it came apart that minor differences won't change anything?
like i said, it will hardly hurt the turbo since the stocker has less mass to spin.
i would much rather think of it like pulling apart an engine or a gearbox assembly and putting it back together without inspecting or measuring anything. it is just an assumption it was right to begin with. you think the fans never get out of balance? that just because everything is aligned the way it came apart that minor differences won't change anything?
like i said, it will hardly hurt the turbo since the stocker has less mass to spin.
Last edited by RotaryEvolution; 03-27-06 at 04:47 AM.
#11
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Originally Posted by Karack
it is just an assumption it was right to begin with. you think the fans never get out of balance?
that just because everything is aligned the way it came apart that minor differences won't change anything?
it will hardly hurt the turbo since the stocker has less mass to spin.
#12
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Originally Posted by Karack
if you say so.
like i said, it will hardly hurt the turbo since the stocker has less mass to spin.
like i said, it will hardly hurt the turbo since the stocker has less mass to spin.
#15
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Originally Posted by Karack
sometimes i think you argue just for the sake of arguing...
what does it hurt to have the assembly balanced? nothing.... it can only help.
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