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I supported Toymods
Location:
NE Melbourne
Registered:
May 2002
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second hand turbos - what to look for
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Sat, 25 October 2003 02:47
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i did a quick search on the forums and couldn't find much info. could anyone suggest things to look for when buying a second ahnd turbo?
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Location:
Perth
Registered:
September 2002
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Re: second hand turbos - what to look for
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Sat, 25 October 2003 03:19
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Shaft play forwards and side to side
most 2nd hand turbos will have a tiny bit but if you wriggle it with your finger and can feel it its probably too much
the more shaft play = the more chance the blades will hit the housing = bad
In saying that, 'apparently' ball bearing turbos have a tiny bit of play from factory but i wouldnt go shopping for a turbo based on that..
You want no more than 0.5mm play i guess and thats probably too much
Umm what else... basically the condition of the blades, any chips etc = bad
Hard to check oil seal if the turbos off the car
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Location:
Canberra
Registered:
May 2002
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Re: second hand turbos - what to look for
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Sat, 25 October 2003 04:13
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roughly what sort of turbo are you after? Toyota? Nissan? ball bearing, or bush bearing? ceramic or steel?
Cheers
Phil
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I supported Toymods
Location:
NE Melbourne
Registered:
May 2002
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Re: second hand turbos - what to look for
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Sat, 25 October 2003 06:06
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looking for something to use with 4AGTE conversion. either nissan or toyota, ball bearing would be nice, but not essential.
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Location:
Perth
Registered:
September 2002
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Re: second hand turbos - what to look for
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Sat, 25 October 2003 06:51
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T28 
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I supported Toymods
Location:
Perth, Western Australia
Registered:
December 2002
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Re: second hand turbos - what to look for
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Sat, 25 October 2003 07:03
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Yep T28 ball bearing, go and buy one new for around $1400-1500, even good second hand ones can hide problems. I bought a brass bearing T28 that felt perfect, however upon inspection it was found to have been oil starved at one point. A set of oversize bearings and a rebuild later ($920), I had a good turbo (fortunately I paid peanuts for it originally so it didn't worry me)!
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Location:
Canberra
Registered:
May 2002
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Re: second hand turbos - what to look for
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Sun, 26 October 2003 09:38
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As clintgodde said, you cant go wrong with a brand new GT25 (320hp) for around $1500. They are a fantastic match for the 4AG, with excellent response & no loss at the top of the revs.
I dont really trust buying second hand turbos unless I've seen the car running that it came from, unless its cheap enough to not care about the condition and take a chance. Its easy to see problems with the physical condition of wheels, and feel for shaft play, but its just as expensive to change oil seals as it is for a full rebuild, and its hard to tell if it has this problem if the previous owner hits it with some degreaser before you see it 
Any later model T25/28 turbos (ball bearing or not) are hard to come by because of their popularity at the moment. Expect to pay around $600 for a bush bearing model, and $800+ for ball bearing, unless you can find a cheap private sale.
My bush bearing S14 200SX T28 may be for sale soon.....
Phil
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Location:
Perth
Registered:
September 2003
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Re: second hand turbos - what to look for
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Tue, 28 October 2003 03:39
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a pair of ex-starlet CT9s would be "interesting"... 
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I supported Toymods
Location:
NE Melbourne
Registered:
May 2002
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Re: second hand turbos - what to look for
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Thu, 30 October 2003 11:54
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so you suggest that a brand new GT25/28 is the go??? where does one go to buy new turbos?
hey Phil, did you fabricate you own exhaust manifold? do you ahve any pictures of it? i'm about to start doing one myself!
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Location:
Canberra
Registered:
May 2002
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Re: second hand turbos - what to look for
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Thu, 30 October 2003 13:32
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Best value place to buy is www.horsepowerinabox.com
This website is run by RPM Performance centre, a very reputable workshop.
Yes I fabricated my manifold. There's a pic of it here:
http://www.geocities.com/te72_turbo/4AGTE_turboman ifold.html
but it now has a T25 flange, not the huge cumbersome CT26 one that you see in the pictures.
Phil
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Location:
Perth
Registered:
August 2003
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Re: second hand turbos - what to look for
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Thu, 30 October 2003 17:21
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why do turbos cost so much in value?? 
i could buy a good car for the price of some of them 
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Location:
Canberra
Registered:
May 2002
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Re: second hand turbos - what to look for
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Fri, 31 October 2003 11:13
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Any mechanical item that can spin at around 80,000rpm for 100,000km without any servicing should be worth something
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