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Discussion Starter #1
I'm busy pulling my hair out getting the new turbo fitted, but have noticed that on the old T25 there is a pressure take off point on the compressor housing, but none on the new GT28RS. On taking out the brass fitting on the T25 it shows a small pinhole which I assume goes into the centre of the compressor housing, not on the pressure side as I expected.

Where do I tap a hole, or do I need to as I am running a mbc valve at present, although I plan to go back to APC control once I get some new map and fuel chips fitted.
Any ideas??
 

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Why not tap upstream of the intercooler for your pressure feed Mark? - this will also lose the pressure drop you get through the intercooler...

Pete.
 

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I'd do a small hole (look inside the compressor outlet of the T25 and do the same size hole) at, relatively, the same position on the outlet of the compressor housing, thread it and install your brass fitting. Even with the mbc, you'll need that fitting to control the boost. I'm sure there aren't too many 900's, or other Saabs for that matter, that are using the 'disco potato' - how does it feel to be on the cutting edge?
 

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Discussion Starter #4
Well I finally finished fitting the turbo, it took over 5 days of messing around and definitely isn't plug and play!!
I had to modify the oil supply line in, the oil return out, the water outlet line and the wastegate bracket and wastegate actuator. I had to take 15mm off the JT exhaust so the exhaust would clear the water pump.
I also fitted a 3" intake pipe with a huge ITG filter which wouldn't fit into the air filter box so is open to the elements....I'll suck it and see how it gets on first before I make judgement. The throttle body intake pipe has been upgraded to 3" also.
I,ve drilled a hole in the throttle body to tap off the pressure side so it'll read pressure at the manifold rather than at the turbo.

http://img.photobucket.com/albums/v471/Mar...Picture2002.jpg http://img.photobucket.com/albums/v471/Mar...Picture2004.jpg http://img.photobucket.com/albums/v471/Mar...Picture2011.jpg http://img.photobucket.com/albums/v471/Mar...Picture2010.jpg

I've also upgraded my brakes at last to compliment the extra power!!


http://img.photobucket.com/albums/v471/Mar...Picture2007.jpg
http://img.photobucket.com/albums/v471/Mar...Picture2008.jpg
http://img.photobucket.com/albums/v471/Mar...Picture2005.jpg
http://img.photobucket.com/albums/v471/Mar...Picture2006.jpg

I just went out an hour ago to bed the brakes in, got it up to temperature and then gently pressed the accelerator pedal and i didn't expect the sheer shock I experienced
...I actually burst out laughing it was so vicious!!!

The performance is unbelievable, I just wasn't expecting that much of a gain, the last 5 days of making everything fit was forgotten in an instant and I've still to fit the performance cams...

I'm going to have to turn the boost down to get some sort of control until I get it on a dyno as when I lifted the bonnet to check for leaks etc the exhaust manifold and turbo was glowing red...I've had the turbo glow red before but never the whole manifold...


Oh, the brakes work good also..

I,m still in shock to be truthful, I never actually buried the throttle as the tyres kept loosing grip and it kept going into limp home mode.

In total it has cost me £600 for the turbo from the US, £130 for Ylees pipe.(a big thank you there!!) and about £50 for the air filter and crankcase filter. I got the stainless steel pipe work done at work for nothing, also adapting the exhaust flange cost me nothing. I used cut up pieces of redundant saab bits to make it all fit together.
Cost for performance gain, in my opinion, is well worth it. It took me a long time to get everything together but I'm glad I did!

If anyone else wants to fit this type of turbo to their car I can talk you through what is required to do so it won't take as long as it took me, its very very awkward fitting the wastegate actuator and oil and water lines when the turbo is in situ but there was no way I was taking the turbo off again once it was in position so space and accessibility for spanners was a nightmare with lots of swearing!!

I'm very happy at the moment!!
 

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Nice job Mark! I didn't realize you were putting it on the Carlsson - I should have read the thread more carefully but only looked at your avatar. I wouldn't worry about the turbo/manifold glowing - it's pretty normal when they're on boost for any length of time. Those brakes and wheels look very nice, too. It'll be interesting to see the rolling road figures - sounds like it's definitely above 300 hp. How's your clutch? Is it an up-rated Sachs?
 

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Very neat job Mark, congratulations.
Looks to me from the condition of the cam/valve cover,
in 2 different photos, that the next purchase should be some flame proof paint or a heat shield.
 

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Ahhh...
Figured there was something amiss, due to the extra high temps you referred to. Who is doing the remapping of the APC?
It's a little difficult to find places in Australia who are willing to do upgrade work on Saab turbos. Unichip and the like sell after-market chips, but the better results form what I have found out are with specialist Saab tuners. Just looking for coolant pipes to replace the ones on my 9000 draws sighes form anyone you call. (Oh its for a Saab.mmm I'll have to call you back..)
Keep posting the results. Great to see how well Saabs take to a little upgrade.
Chris
 

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If you want a chip for the Bosch Jetronic, BSR have, and it costs around $300 to your door from the US. APC mods? I have a modded one in my '87 9000 Turbo (which i now have up for sale.. the car that is) it is really easy if you have a soldering iron, (a little soldering practice is helpfull) and some easy to get hold of components. one of the easiest mods is to remove the boost reduction at 5500.. just requires a little piece of wire, and some solder!

if you want more detailed instructions, PM me!
 

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Originally posted by Grentarc:
[qb]If you want a chip for the Bosch Jetronic, BSR have, and it costs around $300 to your door from the US.  APC mods? I have a modded one in my '87 9000 Turbo (which i now have up for sale.. the car that is) it is really easy if you have a soldering iron, (a little soldering practice is helpfull) and some easy to get hold of components.  one of the easiest mods is to remove the boost reduction at 5500.. just requires a little piece of wire, and some solder!  
   
if you want more detailed instructions, PM me! [/qb][/b]
Unfortunately the later cars with DI use a digital rather than analogue APC unit, it's not such a simple task as changing resistor values unfortunately. It does require remapped chips and since there are relatively few chars with these types of APC's (they ran 1989-1993 IIRC) and there are multiple versions for the different engine size and turbo configurations, there are very few tuners who have upgrades for them.
 

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Originally posted by Grentarc:
[qb]If you want a chip for the Bosch Jetronic, BSR have, and it costs around $300 to your door from the US.  APC mods? I have a modded one in my '87 9000 Turbo (which i now have up for sale.. the car that is) it is really easy if you have a soldering iron, (a little soldering practice is helpfull) and some easy to get hold of components.  one of the easiest mods is to remove the boost reduction at 5500.. just requires a little piece of wire, and some solder!  
   
if you want more detailed instructions, PM me! [/qb][/b]
Kool, email sent. Forgot to add one thing, I remember discussing turbo's and water cooling with you in the past. My 86 has a water cooled turbo. I must have a close look and get some numbers off it, to see what has been done. It may-be an uprated unit.

BTW..If you need any new replacement parts, let me know, I'll see what sort of price I can get you.
Don't think I'll go as far as a BSR chip, as I may be selling this car in April/May. Hopefully to upgrade.
Cheers, Chris.
 

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So, Mr Torque,
Would you suggest if I wanted a later model Saab to rework, that I'd be better off with one from between 89-93? Due to there being very few tuners around, and the fact I am in Australia, and I'd doubt there would be anyone here at all. Would you suggest Maptune?
I did see a featured car from Australia on there.
Mark, you'll have get to a streetcar drag meet somewhere and give the 'rice' boys a shock.
Chris
 

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Jason - seeing as aus9000t16 has an old analogue APC, in an '86/'87 9000 T, i think that my proposal of mods is appropriate.

Chris, That MapTun'd aero is the reseller in Canberra's personal car. I had a long conversation with him once, and he is quite an enthusiest. He used to be the Abbott reseller!

next time I go to canberra, I plan on dropping in to see him and have a look at his Stage 4 Aero!
 

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Thats excellent....thought I'd seen something about a reseller here, but wasn't sure so didn't say. (have been wrong on other forums and been lynched
)
Chris
 
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