More TURBO questions!
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Joined: Mar 2003
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From: Atlanta, GA, USA
More TURBO questions!
Question 1:
Well I think my turbo is gone... I am shooting oil through the charge pipes, however I cannot feel any shaftplay on the compressor side.... Can Anyone confirm that I have blown my bearings?
Question 2:
Also If I have, I am looking to get a smaller turbo that spools up quicker.... I am only boosting 6.5 PSI and dont need soemthing huge.... I had a t3/t04e turbo. I was wondering how much BOOST I could run on a 95 gsr with stock internals, stock head gasket and everything with a regular t3 turbo (I have 440cc injectors running AFC Hack) THe reason I ask this question is because I heard that you can boost higher on smaller turbos, because the flow is less... THANKS FOR ANY HELP!!
Well I think my turbo is gone... I am shooting oil through the charge pipes, however I cannot feel any shaftplay on the compressor side.... Can Anyone confirm that I have blown my bearings?
Question 2:
Also If I have, I am looking to get a smaller turbo that spools up quicker.... I am only boosting 6.5 PSI and dont need soemthing huge.... I had a t3/t04e turbo. I was wondering how much BOOST I could run on a 95 gsr with stock internals, stock head gasket and everything with a regular t3 turbo (I have 440cc injectors running AFC Hack) THe reason I ask this question is because I heard that you can boost higher on smaller turbos, because the flow is less... THANKS FOR ANY HELP!!
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Joined: Mar 2003
Posts: 598
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From: Atlanta, GA, USA
Re: More TURBO questions! (MiraiZ)
the oil is the charge pipes...... BEFORE it gets to the Intercooler.....
+ I am running a 90 degree AN fitting off of the turbo itself.. Is it possible that the 90 degree fitting isnt letting the oil flow quick enought and somehow backing up? All I know for sure is that there is oil coming out of compressor are of turbo...
+ I am running a 90 degree AN fitting off of the turbo itself.. Is it possible that the 90 degree fitting isnt letting the oil flow quick enought and somehow backing up? All I know for sure is that there is oil coming out of compressor are of turbo...
What is this crap?
Joined: May 2001
Posts: 23,180
Likes: 57
From: Minneapolis, MN
Re: More TURBO questions! (BlackB18CTeg)
<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by BlackB18CTeg »</TD></TR><TR><TD CLASS="quote">
Question 2:
Also If I have, I am looking to get a smaller turbo that spools up quicker.... I am only boosting 6.5 PSI and dont need soemthing huge.... I had a t3/t04e turbo. I was wondering how much BOOST I could run on a 95 gsr with stock internals, stock head gasket and everything with a regular t3 turbo (I have 440cc injectors running AFC Hack) THe reason I ask this question is because I heard that you can boost higher on smaller turbos, because the flow is less... THANKS FOR ANY HELP!!</TD></TR></TABLE>
hmm interesting way of looking at it. from what i understand ... spool is determined by the turbine side a/r. you probably have a .63 a/r on your turbine wheel. if you want quicker spool, get a .48 a/r turbine wheel. i would stay with the t3/t04e turbo though....with a .54 or .57 trim compressor side.
its very likely theres a precision turbo with these specs for you. i'd probly look in that direction.
as far as boosting higher on smaller turbos...thats kind of misleading. the fact is that you'll have to run more boost to make the same peak horsepower / torque than a "larger" turbo. the turbo with the smaller exhaust trim will have quicker spool that you're looking for but will have more exhaust restriction at full spool high rpm, so your peak power numbers will be down at a given boost level.
Question 2:
Also If I have, I am looking to get a smaller turbo that spools up quicker.... I am only boosting 6.5 PSI and dont need soemthing huge.... I had a t3/t04e turbo. I was wondering how much BOOST I could run on a 95 gsr with stock internals, stock head gasket and everything with a regular t3 turbo (I have 440cc injectors running AFC Hack) THe reason I ask this question is because I heard that you can boost higher on smaller turbos, because the flow is less... THANKS FOR ANY HELP!!</TD></TR></TABLE>
hmm interesting way of looking at it. from what i understand ... spool is determined by the turbine side a/r. you probably have a .63 a/r on your turbine wheel. if you want quicker spool, get a .48 a/r turbine wheel. i would stay with the t3/t04e turbo though....with a .54 or .57 trim compressor side.
its very likely theres a precision turbo with these specs for you. i'd probly look in that direction.
as far as boosting higher on smaller turbos...thats kind of misleading. the fact is that you'll have to run more boost to make the same peak horsepower / torque than a "larger" turbo. the turbo with the smaller exhaust trim will have quicker spool that you're looking for but will have more exhaust restriction at full spool high rpm, so your peak power numbers will be down at a given boost level.
Thread Starter
Joined: Mar 2003
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From: Atlanta, GA, USA
Re: More TURBO questions! (falconGSR)
im happy with my garret, however it is Shooting oil... A rebuild is almost hte price of a slightly used T3 which would give me a quicker spool and about the same HP as mine at such low boost...
Joined: May 2003
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From: Easley, SC, USA
Re: More TURBO questions! (BlackB18CTeg)
I think you might be best off "upgrading" to a .57 trim compressor, but what you said about it shooting oil... it wont be because the oil isnt flowing fast enough... if anything the opossite
The oil may be too thin... but I doubt it, change your oil w/maybe a higher weight. What size line are you running to the oil inlet? I would first try testing it w/different sized lines... it may be getting the oil too fast and its forcing it to seep out past the shaft sweat bearings or whatever you have.
If that all fails you can take your compressor side apart down to the bearing (usually a plate before it thats a bitch to get off cuz of torque screws) and see if the ring is bad. Then take it to a machine shop that can cut that material into a very fine ring, to absolute spec, and fit it in there... I know that sounds risky, but as long as its a precision cut and it doesnt scratch the shaft then its good... some companies can purchase exact rings that are perfect replacements but make sure they are the same material because its purpose is to seal when its hot... this is so far what I have been told.
Also where are you looking at rebuild kits that cost the same as a used T3?
All you need are the C or O-rings that seal the shafts, I think I have seen small kits consisting of nothing but seals and gaskets, you might be lookin at kits that have new blades or new shafts.
The oil may be too thin... but I doubt it, change your oil w/maybe a higher weight. What size line are you running to the oil inlet? I would first try testing it w/different sized lines... it may be getting the oil too fast and its forcing it to seep out past the shaft sweat bearings or whatever you have.
If that all fails you can take your compressor side apart down to the bearing (usually a plate before it thats a bitch to get off cuz of torque screws) and see if the ring is bad. Then take it to a machine shop that can cut that material into a very fine ring, to absolute spec, and fit it in there... I know that sounds risky, but as long as its a precision cut and it doesnt scratch the shaft then its good... some companies can purchase exact rings that are perfect replacements but make sure they are the same material because its purpose is to seal when its hot... this is so far what I have been told.
Also where are you looking at rebuild kits that cost the same as a used T3?
All you need are the C or O-rings that seal the shafts, I think I have seen small kits consisting of nothing but seals and gaskets, you might be lookin at kits that have new blades or new shafts.
What is this crap?
Joined: May 2001
Posts: 23,180
Likes: 57
From: Minneapolis, MN
Re: More TURBO questions! (BlackB18CTeg)
<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by BlackB18CTeg »</TD></TR><TR><TD CLASS="quote">im happy with my garret, however it is Shooting oil... A rebuild is almost hte price of a slightly used T3 which would give me a quicker spool and about the same HP as mine at such low boost...</TD></TR></TABLE>
oh ok i see where you're going now. seriously i would consider having the turbo rebuilt and have a lower a/r turbine put on in that case. i think you'll notice a power loss with a straight T3.
oh ok i see where you're going now. seriously i would consider having the turbo rebuilt and have a lower a/r turbine put on in that case. i think you'll notice a power loss with a straight T3.
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Thread Starter
Joined: Mar 2003
Posts: 598
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From: Atlanta, GA, USA
Re: More TURBO questions! (stierhund)
<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by stierhund »</TD></TR><TR><TD CLASS="quote">I think you might be best off "upgrading" to a .57 trim compressor, but what you said about it shooting oil... it wont be because the oil isnt flowing fast enough... if anything the opossite
The oil may be too thin... but I doubt it, change your oil w/maybe a higher weight. What size line are you running to the oil inlet? I would first try testing it w/different sized lines... it may be getting the oil too fast and its forcing it to seep out past the shaft sweat bearings or whatever you have.
If that all fails you can take your compressor side apart down to the bearing (usually a plate before it thats a bitch to get off cuz of torque screws) and see if the ring is bad. Then take it to a machine shop that can cut that material into a very fine ring, to absolute spec, and fit it in there... I know that sounds risky, but as long as its a precision cut and it doesnt scratch the shaft then its good... some companies can purchase exact rings that are perfect replacements but make sure they are the same material because its purpose is to seal when its hot... this is so far what I have been told.
Also where are you looking at rebuild kits that cost the same as a used T3?
All you need are the C or O-rings that seal the shafts, I think I have seen small kits consisting of nothing but seals and gaskets, you might be lookin at kits that have new blades or new shafts.</TD></TR></TABLE>
The reason I am shooting Oil is because of Compressor surge I believe... I was running about 3 PSI for a little while without my BOV opening.... So I would assume I needed new bearings, not only new seals. I dont feel any shaftplay tho...
The oil may be too thin... but I doubt it, change your oil w/maybe a higher weight. What size line are you running to the oil inlet? I would first try testing it w/different sized lines... it may be getting the oil too fast and its forcing it to seep out past the shaft sweat bearings or whatever you have.
If that all fails you can take your compressor side apart down to the bearing (usually a plate before it thats a bitch to get off cuz of torque screws) and see if the ring is bad. Then take it to a machine shop that can cut that material into a very fine ring, to absolute spec, and fit it in there... I know that sounds risky, but as long as its a precision cut and it doesnt scratch the shaft then its good... some companies can purchase exact rings that are perfect replacements but make sure they are the same material because its purpose is to seal when its hot... this is so far what I have been told.
Also where are you looking at rebuild kits that cost the same as a used T3?
All you need are the C or O-rings that seal the shafts, I think I have seen small kits consisting of nothing but seals and gaskets, you might be lookin at kits that have new blades or new shafts.</TD></TR></TABLE>
The reason I am shooting Oil is because of Compressor surge I believe... I was running about 3 PSI for a little while without my BOV opening.... So I would assume I needed new bearings, not only new seals. I dont feel any shaftplay tho...
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