Help Identifying Turbo
Thread Starter
Joined: Dec 1999
Posts: 7,855
Likes: 517
From: Behind a workbench, repairing FC Electronics.
Help Identifying Turbo
So I loaned a guy my old 2 wheeled car dolly, which he broke and left in New York somewhere...
He didn't have money to buy me a new one, so he gave me a crap ton of RX-7 parts. Among them was this turbo.
It has no tags or anything, but I was told that it's a T66 or T70.
I don't know much about turbos except their general theory of operation. I need help identifying what it is and any other details anyone can figure out... A/R ratio and such...
I can tell that it is oil cooled only and that it is SIGNIFICANTLY larger than a factory S5 turbo (Pictured next to it for size reference.)
Check out this album and let me know what you can gather from it.
http://picasaweb.google.com/Theo.Abr...eat=directlink
All photos can be blown up and are in high resolution. I have photographed any markings and numbers that I can find on it.
He didn't have money to buy me a new one, so he gave me a crap ton of RX-7 parts. Among them was this turbo.
It has no tags or anything, but I was told that it's a T66 or T70.
I don't know much about turbos except their general theory of operation. I need help identifying what it is and any other details anyone can figure out... A/R ratio and such...
I can tell that it is oil cooled only and that it is SIGNIFICANTLY larger than a factory S5 turbo (Pictured next to it for size reference.)
Check out this album and let me know what you can gather from it.
http://picasaweb.google.com/Theo.Abr...eat=directlink
All photos can be blown up and are in high resolution. I have photographed any markings and numbers that I can find on it.
The Big Ugly!
Joined: May 2009
Posts: 867
Likes: 0
From: Fredericksburg, Va
I looks like one of those super T70's. It could be SUPER 70 60.5mm - A/R RATIO .70 - TURBINE HOUSING A/R .84 - COMPRESSOR HOUSING .70 - T4 FLANGE
like this:
you could always take the covers off & measure the wheels with a caliper. To get the AR gotta do some math.
Here you go:
http://www.turbobygarrett.com/turbob...o_tech102.html
like this:
you could always take the covers off & measure the wheels with a caliper. To get the AR gotta do some math.
Here you go:
http://www.turbobygarrett.com/turbob...o_tech102.html
The Big Ugly!
Joined: May 2009
Posts: 867
Likes: 0
From: Fredericksburg, Va
From what I can see from the pics those are 4 bolt exit T4 gaskets. The turbo appears to have a V-Band exit so you won't need them. I will say a lot of the T70's I have seen have had a divided housing, but there have been a few undivided I have personally seen.
Those gaskets are for this type housing
Those gaskets are for this type housing
Last edited by rotordad; Dec 24, 2010 at 02:51 PM.
Looks like a T76 compressor wheel and Q trim turbine wheel, hard to say for sure though. Doesn't look like the standard EBAY stuff...
Banned. I got OWNED!!!
Joined: Oct 2010
Posts: 5
Likes: 0
From: Shithole, CA
k so i decided to pm the guy first instead of read his thread and found this little bit of info, if anyone can go off this let me know
Compressor A/R is .70, exhaust is .84, non-divided, v-band.
OK, the back of the turbo has the following:
5327-5794
5617
K27.015
The tag says:
Turbocharger
Type: T4 V Band
Part no: ST1
Serial number: T511090390184
J84 is cast into the front housing
The inlet is about 4" across and tapers to what looks like about 2 1/2", and the outlet is about 2 1/2" as well.
Yup, firsthand experience, I have a messed up one here in my garage. They're cheap China T70 knockoff turbos. (Where do you think ssautochrome gets theirs?) I disassembled mine after the wheel ate the compressor away and the wheel wasnt balanced, the compressor inducer fins weren't sharpened and the shaft is very thin compared to any quality T70 turbo. The casting of the CHRA looks awfully cheap as well. I had a friend who rebuilds turbos for a living look at it and he just laughed. Just wanted to give a word to the wise, I don't want anyone to go through what I went through with that turbo.
Cesar
PS Here's a pic so you don't think Im BSing, I took this when I got my new turbo to show they are the same dimensions as far as compressor and turbine housings. You can also see the shaft size differences and the dull compressor wheel blades.
man...this doesnt look good for me...
Compressor A/R is .70, exhaust is .84, non-divided, v-band.
OK, the back of the turbo has the following:
5327-5794
5617
K27.015
The tag says:
Turbocharger
Type: T4 V Band
Part no: ST1
Serial number: T511090390184
J84 is cast into the front housing
The inlet is about 4" across and tapers to what looks like about 2 1/2", and the outlet is about 2 1/2" as well.
Yup, firsthand experience, I have a messed up one here in my garage. They're cheap China T70 knockoff turbos. (Where do you think ssautochrome gets theirs?) I disassembled mine after the wheel ate the compressor away and the wheel wasnt balanced, the compressor inducer fins weren't sharpened and the shaft is very thin compared to any quality T70 turbo. The casting of the CHRA looks awfully cheap as well. I had a friend who rebuilds turbos for a living look at it and he just laughed. Just wanted to give a word to the wise, I don't want anyone to go through what I went through with that turbo.
Cesar
PS Here's a pic so you don't think Im BSing, I took this when I got my new turbo to show they are the same dimensions as far as compressor and turbine housings. You can also see the shaft size differences and the dull compressor wheel blades.
man...this doesnt look good for me...
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