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PostPosted: Thu Feb 07, 2013 6:28 pm 
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Saab Nut
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Joined: Mon Dec 18, 2006 6:08 pm
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Location: New Romney, Kent
Car Model: 99 8v T project, c900i Vert
I could have it wrong, I thought 5th was an overdrive gear as it has the E next to it on the shift knob....need to do my homework a bit better then :P

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PostPosted: Fri Feb 08, 2013 8:05 am 
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Location: The Nut Hut
5th is indeed direct drive :)


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PostPosted: Fri Feb 08, 2013 10:21 am 
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Location: Cheshire
Car Model: Saab 900 and 99
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900i '87
99 '83 Turbo Killer
99 EMS 77
Lancer EVO 6.5 TME '00 in red
Lancer EVO 6.5 TME '00 in black


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PostPosted: Fri Mar 01, 2013 3:57 pm 
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Car Model: Saab 900 and 99
Below is a print out of two power runs, both using the same engine and 5-speed gearbox, one is done in 4th gear and the other in 5th gear. The last power run i posted up 175bhp was also done in 5th gear at the same time.
Image

We have come a long way from the first recorded tuning, higher compression standard head with re-profiled Pipercam on K-jet fuelling, 4-2-1 manifold and Jetex silencers. Around 9bhp up from the standard fuel injected engine.

Image

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900i '87
99 '83 Turbo Killer
99 EMS 77
Lancer EVO 6.5 TME '00 in red
Lancer EVO 6.5 TME '00 in black


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PostPosted: Sun Mar 03, 2013 10:31 am 
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Joined: Mon Dec 18, 2006 6:08 pm
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Location: New Romney, Kent
Car Model: 99 8v T project, c900i Vert
What I find interesting about those graphs is that the engine torque now hardly tapers off as the RPM inrease,

Saab quoted maximum torque as 123 ftlbs at 3700 rpm for the stock 8-valve injection engine, and yet even with the "mild" tune in the second graph, the torque is still increasing at 6000 rpm.

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PostPosted: Sun Mar 03, 2013 9:08 pm 
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VikingSpirit wrote:
What I find interesting about those graphs is that the engine torque now hardly tapers off as the RPM inrease,

Saab quoted maximum torque as 123 ftlbs at 3700 rpm for the stock 8-valve injection engine, and yet even with the "mild" tune in the second graph, the torque is still increasing at 6000 rpm.


Are you looking at the right curves?
The 'mild' engine has max torque of 124 lb/ft at around 4500 rpm which falls to around 113 lb/ft at 6000rpm.

If the torque was still climbing then so would the power, a lot in fact. Torque will typically start falling away after the point of maximum volumetric efficiency. Tuning an engine is all about increasing the volumetric efficiency.


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PostPosted: Sun Mar 03, 2013 11:15 pm 
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Joined: Mon Dec 18, 2006 6:08 pm
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Location: New Romney, Kent
Car Model: 99 8v T project, c900i Vert
damn your right dave, made a right fool of myself there, I should know better!

In my defence I did have a horrible hangover this morning :oops:

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PostPosted: Mon Mar 04, 2013 12:06 am 
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VikingSpirit wrote:
damn your right dave, made a right fool of myself there, I should know better!

In my defence I did have a horrible hangover this morning :oops:


Not Dave, Peter! I just thought I'd crash in on the thread!

Both engines do hold their torque well. While power can (and does) increase as torque falls away you still need good torque to produce power. At a given amount of revs the engine with more torque will also have more power.

Tuning an engine like this is all about shifting the torque curve around. If you can increase torque up the rev range you will also increase the power. If you can do it without losing it at lower revs (as Dave seems to have achieved) then thats great, but it can be a trade off.


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PostPosted: Mon Mar 04, 2013 12:22 pm 
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Joined: Mon Dec 18, 2006 6:08 pm
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Location: New Romney, Kent
Car Model: 99 8v T project, c900i Vert
saab surfer wrote:
VikingSpirit wrote:
Not Dave, Peter! I just thought I'd crash in on the thread!


..and with every reply I dig the hole a little deeper :park: sorry Saab surfer - note to self, engage brain before hitting the reply button... :oops:

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PostPosted: Wed Aug 07, 2013 3:34 pm 
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Location: Cheshire
Car Model: Saab 900 and 99
Took the car to the international show on Saturday, no issues at all, I think this is the furthest i have driven it in one journey. With the type 4 primaries the noise in the car was not too bad, my eldest daughter managed to fall asleep in the back, around 3800 rpm and speeds of around 75 to 80 mph, it averaged just under 30 mpg with about 95% of the trek on the motorway.

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900i '87
99 '83 Turbo Killer
99 EMS 77
Lancer EVO 6.5 TME '00 in red
Lancer EVO 6.5 TME '00 in black


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PostPosted: Wed Aug 07, 2013 3:52 pm 
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Arkwright.
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Joined: Sat Jan 20, 2007 6:33 pm
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Location: NETTLEHAM, LINCOLNSHIRE
Car Model: 99GL, Jaguar XF & Fiat 500
And very smart it looked too, not a bad mpg average that either.

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PostPosted: Wed Aug 07, 2013 4:55 pm 
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Location: Cheshire
Car Model: Saab 900 and 99
Cheers Mal, yes it also attracted a fair bit of interest.
I was getting fed up of the polished rocker cover, so i painted it wrinkle black, but first, Neil, Julians brother, welded a round plate on the front where the disi used to live, this has stopped the potential for leaks.
Image
Image
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900i '87
99 '83 Turbo Killer
99 EMS 77
Lancer EVO 6.5 TME '00 in red
Lancer EVO 6.5 TME '00 in black


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PostPosted: Wed Aug 07, 2013 9:51 pm 
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Location: NETTLEHAM, LINCOLNSHIRE
Car Model: 99GL, Jaguar XF & Fiat 500
Dave, the black looks just as good if not better IMHO.

Whats happening with the EMS?

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PostPosted: Thu Aug 08, 2013 7:23 am 
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Location: Cheshire
Car Model: Saab 900 and 99
I think it looks better to, hopefully it will also be easier to look after.

The EMS is still at the paint shop, I'm in no rush for it and its free storage.

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900i '87
99 '83 Turbo Killer
99 EMS 77
Lancer EVO 6.5 TME '00 in red
Lancer EVO 6.5 TME '00 in black


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PostPosted: Thu Aug 08, 2013 9:40 am 
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Arkwright.
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Location: NETTLEHAM, LINCOLNSHIRE
Car Model: 99GL, Jaguar XF & Fiat 500
Quote:
The EMS is still at the paint shop, I'm in no rush for it and its free storage.


Certainly looking forward to seeing that when its finished 8) :envy:

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PostPosted: Sun Sep 22, 2013 4:59 pm 
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Joined: Fri Aug 10, 2012 1:41 pm
Posts: 230
Car Model: Saab 9-5 Aero
I like this car. Question is why didn't Saab do it like this? Is it cost or reliability? I suppose if you consider the engine management angle then it may not have been technically possible at the time.

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PostPosted: Sun Sep 22, 2013 7:35 pm 
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Location: Cheshire
Car Model: Saab 900 and 99
loveasaab wrote:
I like this car. Question is why didn't Saab do it like this? Is it cost or reliability? I suppose if you consider the engine management angle then it may not have been technically possible at the time.


In my own little world, I like to think this is how Saab would have progressed with their own tuning dept', similar to what Volvo sport R, BMW Alpina, Fiat Arbath etc did with their cars. Of course this car was slightly too early for ECUs, although the first modern type ECU was introduced at the very start of the '80s, it may have been too expensive. Maybe if the competition dept' had continued the availability of tuning parts for the 99 would have been more plentiful, with the likes of manifolds, modified heads and cams etc, but alas its all speculation.

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900i '87
99 '83 Turbo Killer
99 EMS 77
Lancer EVO 6.5 TME '00 in red
Lancer EVO 6.5 TME '00 in black


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PostPosted: Mon Sep 23, 2013 1:26 pm 
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Joined: Fri Aug 05, 2005 6:51 pm
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Location: Cheshire
Car Model: Saab 900 and 99
The only thing this car lacks is power steering, but I think I can remedy this.

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900i '87
99 '83 Turbo Killer
99 EMS 77
Lancer EVO 6.5 TME '00 in red
Lancer EVO 6.5 TME '00 in black


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PostPosted: Mon Sep 23, 2013 4:06 pm 
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Joined: Fri Apr 20, 2012 11:13 am
Posts: 2755
Location: Aberdeenshire
Car Model: 900 T16 Aero
Now that's the way old cars should be run, Throttle bodies and modern ignition, Nice car mate I like it. Well apart from the colour that is lol.



Rob


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PostPosted: Mon Sep 23, 2013 4:43 pm 
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Location: Cheshire
Car Model: Saab 900 and 99
vpulsar wrote:
Now that's the way old cars should be run, Throttle bodies and modern ignition, Nice car mate I like it. Well apart from the colour that is lol.



Rob


Thanks.

Yes the colour is one those marmite colours, I really like it.

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99 '83 Turbo Killer
99 EMS 77
Lancer EVO 6.5 TME '00 in red
Lancer EVO 6.5 TME '00 in black


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