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Performance Modifications for the NG900 / Old 9-3 This forum contains PERFORMANCE related Q&A's for the NG900 and 9-3. This may also include suspension.

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Old 09-05-2008, 04:24 PM   #1
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what do i need for a gt28 turbo???

what do i need to put this on a 9-3?
what thread size for oil and coolant.
does it need bigger lines? ect...
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Old 09-05-2008, 07:20 PM   #2
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Need to know turbo model not just GT28.
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Old 09-05-2008, 07:33 PM   #3
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its a garrett
here are pictures of it.







so i know i need a 5 bolt to 3 bolt adapter or someone to put a 5 bolt on the exhaust.
i have -06AN lines on the car now so i just need to know what thread size the turbo has so i can get ends for the lines. and i just need the intake side adapters, but im not sure of a good place to get them.
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Old 09-06-2008, 05:11 AM   #4
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Google for a 5 bolt to V-band adapter, cut the DP and weld a V-band to it... oooor you can call up the US based Maptun dealer and ask for this... http://www.maptun.com/webshop/shop_i...6&kategori=116
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Old 09-06-2008, 05:18 AM   #5
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Do you have the turbo? If so, why would you be asking us what size?

The threads on garret turbos are typically m12/m14 (and maybe m16). Go to a hardware store, buy a bolt of each size to use as a gauge and you'll quickly have your answer.
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Old 09-06-2008, 05:33 AM   #6
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Quote:
Originally Posted by JK View Post
Do you have the turbo? If so, why would you be asking us what size?

The threads on garret turbos are typically m12/m14 (and maybe m16). Go to a hardware store, buy a bolt of each size to use as a gauge and you'll quickly have your answer.
ill have it by monday.
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Old 09-06-2008, 06:18 AM   #7
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do i need these
http://www.atpturbo.com/Merchant2/me..._Code=ATP-OIL1
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Old 09-06-2008, 06:22 AM   #8
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where did you find this turbo? we have to meet up soon i want to see this beast.
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Old 09-06-2008, 06:42 AM   #9
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where did you find this turbo? we have to meet up soon i want to see this beast.
got it cheap from my cousin.

we should wait till i have it in, or you could help me put it in... i think 4 hours start to finish.
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Old 09-06-2008, 07:09 AM   #10
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ya sounds like a plan. shouldnt be any harder than putting in our TDO4s, just less room. i want to get a gt28 for my next setup. they are all over ebay.
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Old 09-06-2008, 07:11 AM   #11
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i think im going to have to rework the intercooler pipe alot, other than that its just swaping out AN fittings.

so i wonder if im going to need that spacer nick used to sell for this turbo?
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Old 09-06-2008, 07:39 AM   #12
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Do you have the intake pipe for it? Was this off a SR20 motor, looks like the one desigend for it.
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Old 09-06-2008, 07:42 AM   #13
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1. you don't have to rework the intercooler piping, you just have to clock the turbo.
2. you need to move the turbo away from the engine otherwise it hits the block.
http://www.genuinesaab.com/catalog/p...7c1a61241f61dv
3. get good lines, it seems you're on top of that.
4. how are you tuning? Do not get a mailbox tune, do it yourself or get a custom tune in person.
5. what injectors are you going to run?
6. you need to do something about the compressor housing. Your saab inlet pipe will not bolt up to the gt28 as is. you can grind it away and put a silicone elbow on, but if you don't do it right it'll suck shut,
or try this:
http://cgi.ebay.com/ebaymotors/Parts-Accessories_Car-Truck-Parts-Accessories__T25-T28-Aluminum-Inlet-Flange-Adapter-GT28-GT28R-Garret_W0QQitemZ170257348079QQddnZPartsQ20Q26Q20Ac cessoriesQQadnZCarQ20Q26Q20TruckQ20PartsQ20Q26Q20A ccessoriesQQddiZ2811QQadiZ2865QQcmdZViewItem?hash= item170257348079&_trkparms=72%3A543|39%3A1|65%3A12 |240%3A1318&_trksid=p4506.c0.m245
but i don't know if you'll have the room there with the ac.

7. Be prepared to get a new clutch to hold the torque.
8. New engine mounts all around, engine tranny and rear, do not skip this. see post 7, ask me how i know.

9. enjoy your third gear wheel spin and realize you're in a car never designed for that much power.
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Old 09-06-2008, 07:59 AM   #14
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Quote:
Originally Posted by Red DIC View Post
1. you don't have to rework the intercooler piping, you just have to clock the turbo.
2. you need to move the turbo away from the engine otherwise it hits the block.
http://www.genuinesaab.com/catalog/p...7c1a61241f61dv
3. get good lines, it seems you're on top of that.
4. how are you tuning? Do not get a mailbox tune, do it yourself or get a custom tune in person.
5. what injectors are you going to run?
6. you need to do something about the compressor housing. Your saab inlet pipe will not bolt up to the gt28 as is. you can grind it away and put a silicone elbow on, but if you don't do it right it'll suck shut,
or try this:
http://cgi.ebay.com/ebaymotors/Parts-Accessories_Car-Truck-Parts-Accessories__T25-T28-Aluminum-Inlet-Flange-Adapter-GT28-GT28R-Garret_W0QQitemZ170257348079QQddnZPartsQ20Q26Q20Ac cessoriesQQadnZCarQ20Q26Q20TruckQ20PartsQ20Q26Q20A ccessoriesQQddiZ2811QQadiZ2865QQcmdZViewItem?hash= item170257348079&_trkparms=72%3A543|39%3A1|65%3A12 |240%3A1318&_trksid=p4506.c0.m245
but i don't know if you'll have the room there with the ac.

7. Be prepared to get a new clutch to hold the torque.
8. New engine mounts all around, engine tranny and rear, do not skip this. see post 7, ask me how i know.

9. enjoy your third gear wheel spin and realize you're in a car never designed for that much power.
1. i want to get some better pipe from the turbo to the IC, i should have reworded it
2.thats the spacer i was looking for but could not find, thanks.
3.i have 500psi SS lines from jegs, i just need what ever size fittings the turbo has.
4. i wanted to get Jak to tune, i have water/meth and i could send it back for retunes for cheap. im not a fan of sqr and thats all thats around me. or i was thinking to get a mail box tune and then change what i need to.
5. i was going to go with the big ones Jak has.
6.I have no a/c so i think it might work. would it really suck shut?
7. i have a spec stage 3, i hope it holds
8.i have polly mounts all around.
9. i think someone said traction was over rated

do you have pictures of your setup?
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Old 09-06-2008, 08:01 AM   #15
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Do you have the intake pipe for it? Was this off a SR20 motor, looks like the one desigend for it.
it was from the apr kit for stage 3 1.8t audi/vw
we thought the turbo was to blame for smoke but it turns out its not and this turbo is fine.
can you rebuild these?
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Old 09-06-2008, 08:39 AM   #16
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This is all i got, i don't have the car anymore.
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Old 09-06-2008, 08:52 AM   #17
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Quote:
Originally Posted by jonny72888 View Post
can you rebuild these?
Not really.

If you dont have one already, you posted a pic of a oil restrictor, you need one on the BB...it's worse to over feed the turbo.

Talk to JZW and Co for their take on rebuilding, but typically BB turbos are not "rebuildable".

And yes, the silicone intake can suck shut, to stop this, minimize the amount of unsupported silicone in the elbow.
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Old 09-06-2008, 01:33 PM   #18
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This is all i got, i don't have the car anymore.
do you have the spacer from GS?
on the intake i was going to have a 2.75 90* to pipe then a 90* to the intake like you have it, that should be fine right? did you have to do something with yours?


Quote:
Originally Posted by Marks900SE View Post
Not really.

If you dont have one already, you posted a pic of a oil restrictor, you need one on the BB...it's worse to over feed the turbo.

Talk to JZW and Co for their take on rebuilding, but typically BB turbos are not "rebuildable".

And yes, the silicone intake can suck shut, to stop this, minimize the amount of unsupported silicone in the elbow.
i do not think i have one unless it is in the turbo already (look at the pictures)
i was going to get it because on that site it says its a must with the gt turbos.



i went and got the turbo today, it does not look like i can reclock the turbo with the wastegate setup it has now. its not a big deal i want to get new pipe from the turbo to the IC anyways. i thin im going to come off the turbo with a 2" to 2.5" adapter and go 2.5 to the inter cooler. the other way would be keep it 2" to the intercooler and the putting the 2-2.5 adapter. it shouldnt matter.
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Old 09-06-2008, 01:37 PM   #19
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Old 09-06-2008, 02:01 PM   #20
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oh yeah, you'll have to get a flange for the outlet of the compressor wheel too.
I don't have the spacer anymore.

I made a bracket for my WG when i did it, but it was bolted inline with the compressor wheel as one of the parts that holds it on.

One thing i wanted out of that turbo was less boost taper, i think the problem was not having the 2.5" delivery pipe installed.
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