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C900 Performance, Mods & Tuning Covers Tuning & Performance modifications for the Classic 900 (C900)

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  #1  
Old 26th October 2007
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Saab-Daniel Saab-Daniel is offline
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Default The First post, every new turbo-owner should read!

Wuhuu, you've got a turbo! First now, what do you do!?
You:
1. Change the oil to full synthetic quality oil and filter, regardless of what the PO says.
2. You change the coolant and flush the system, regardless of what the PO says.
3. You replace all ignition components, that being the rotor, cap, leads and plugs (NGK BCP7EVX for 16v turbo, BP7ES for 8v turbo), regardless of what the PO says.
4. You investigate or/and replace all vacuum-hoses, regardless of what the PO says.
5. You test/replace the bypass-valve, regardless of what the PO says.
6. You unplug the connector on top of the APC-solenoid (located above the radiator, with three large vacuum-hoses going out of it, and a connector on top), to check the base-boost. Drive the car warm, find an inclining road, go into third and floor it. Note the boost on the CALIBRATED boost-gauge, and adjust to 6 psi or 0.45 bar. Shorten the actuator rod for higher boost, lengthen it for lower boost.
Yipeee, NOW you're ready to start modding...
THEN! The first you do is:
1. Mod the APC as per www.900aero.com, realise it isn't enough, and
2. Mod as per http://www.saabcentral.com/forums/sh...ghlight=newest
3. Change broken gearbox
4.. Fit fuel-chip, that dosn't quite cut it, as you run lean at some points, and rich at others.
4. Do the vacuum-capsule mod http://www.saabcentral.com/forums/sh...ht=walkthrough
5. Change to new gearbox
6. Realise you need a bigger turbo, find and fit...
7. Realise you don't have the correct fuelling and ignition-control...
8. Search the project-threads, and find out Megasquirt is your next step towards insane power....
9. Fit strengthened gearbox
10. Join the Dark side with the rest of us!


Regards,
The Reverend...
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  #2  
Old 26th October 2007
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sticky.

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  #3  
Old 26th October 2007
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Quote:
Originally Posted by IronJoe
sticky.
I second that. Luke, Feel the power of the dark side.
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  #4  
Old 26th October 2007
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Default

Quote:
Originally Posted by grif900
I second that. Luke, Feel the power of the dark side.
lol - fantastic, although Jim will you for replacing components that don't need replacing

Daniel in the 2nd part you forgot step 2.5 - chuckle to yourself after you show that V8 mustang what a saab can do and then 2.6 - you realize that that STI or EVO you saw on the highway the other day isn't that fast
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  #5  
Old 11th November 2007
Williamalwyn Williamalwyn is offline
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Thumbs up Numero Uno Post

For my first Post I would like to say, All this information is certainly some good advice. The only item I tend to disagree with is the synthetic oil, but that is ONLY because I have only used regular oil so I really can't judge the True difference. My 94 Saab turbo has run Dino since day One but I may givee the synthetic oil a try
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  #6  
Old 12th November 2007
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Quote:
Originally Posted by grif900
I second that. Luke, Feel the power of the dark side.
Darth Vader personally...
Sorry, but I really "feel" him from this picture...
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  #7  
Old 14th November 2007
Williamalwyn Williamalwyn is offline
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Quote:
Originally Posted by grif900
I second that. Luke, Feel the power of the dark side.
COOL CAR FOR SURE S W E E T
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  #8  
Old 23rd January 2008
REYNOLDS REYNOLDS is offline
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Hey Daniel This is my first post after reading the first post every new owner should read. Do you still reccomend full syn. eeven on a 200,000 mile plus turbo car ? In any case what weight oil would you advise me to use wether synthetic or not?? Thanks
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  #9  
Old 23rd January 2008
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grif900 grif900 is offline
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I can't speak for dan, but I would recomend 10-30 dyno-oil.
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  #10  
Old 24th January 2008
REYNOLDS REYNOLDS is offline
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Thanks Grif,

Don't really know much about the history of the car so I just would like to do it right while she's in my hands.
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  #11  
Old 25th January 2008
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I use different high quality fully synthetic oils, castrol, mobil1 etc. 10/40, 5/40, 10/50, 5/50, didn't notice much difference, I must say, between them...
Daniel.
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  #12  
Old 8th March 2008
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Hey Daniel thats a great resource, I love it when someone does a great summary like that and I'm sure that it helps a lot for anyone contemplating a restoration of one of these great cars.
One question I have for you is what do you do to strengthen the 5-speed pre 1990 box to allow higher hp mods to atleast have a chance of not ruining the box?
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  #13  
Old 22nd March 2008
Donkehote Donkehote is offline
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I have looked arround a little bit ( but probabally not enuf :P) and i cant seem to find any information on where anyone got theyre megasquirt kit from.

Can someone post a link?

Thanks
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  #14  
Old 22nd March 2008
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Saab-Daniel Saab-Daniel is offline
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www.diyautotune.com is my pusher, the best on the netz...

Others are available too, though, but the above is one of the most trusted US-based. in Europe, www.extra-efi.co.uk is also a possibility.
Daniel.
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  #15  
Old 27th March 2008
noturbo noturbo is offline
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Non-synthetic oil is as useful as a VHS tape

:-P
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  #16  
Old 30th April 2008
makai72iraq makai72iraq is offline
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Default Royal Purple

How about Royal Purple synth. Have used this on my old 240 volvo 85 non turbo along with mobil 1 oil filter and was taking down 5.0 mustangs on a little hill numerous times. Then I added it to my 87 900 and it seemed to respond a little better.
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  #17  
Old 30th April 2008
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grif900 grif900 is offline
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Default

Ihmo, good oil with purple dye added to it will not make your car go faster or last any longer,please don't start another oil-thread (the subject has been beaten to death 'round here. Search,read ,learn).

I've left many 5.nothing drivers in the dust but, I am quite shure that I (me, and my 20 year old Saab) lulled them into a false sence of security and then took them by suprise.

p.s. I failed to mention good driving skills on my part.

Last edited by grif900; 30th April 2008 at 11:24 PM.
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  #18  
Old 24th July 2008
machinehead machinehead is offline
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hey i was just wanting to know how much boost can a factory saab 900 2.0 engine take
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  #19  
Old 24th July 2008
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unkleG'sif unkleG'sif is offline
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none, without a decent amount of work......

i forward you to a famous image, created by one of our own



G
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  #20  
Old 26th July 2008
Williamalwyn Williamalwyn is offline
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Thumbs up

This is a MOST Excellent Post! Some Words to LIVE BY
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