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eEuroparts' Dog Gear Set??

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#21 ·
I totally agree and those videos are very cool. I just think that a lot of the saabsters out there deserve some sort of better products for their efforts when producing a high powered street car. Almost all of these guys/gals would go through the whole box anyway before just adding these mods, we're planning on producing. It's just the financial assistance with a gearset that is needed. 20+ people would really bring the price down ... A lot
 
#22 ·
I thought the gearset was already available?

Also, as mentioned, it's not really the gearset that breaks unless there is something else wrong.

Syncro-rings melt if you treat the box in a particular way.

Also, this whole gearbox thing has been done to death. My opinion has changed a bit over the 15 or so years I've been messing around with c900s for. Today I would say you may as well simply concentrate on building the car properly with perhaps a max of 300hp as a goal. Use a late 91+ gearbox with the bigger pinions and syncros. Type-8 primaries to tame out as much of the torque before it gets to the box. If you want it to be good for track use then fit an oil cooler to stop the syncros melting. If you want 500hp get a different car. ;ol;


This gearbox has probably about as much work as you can have:

Image


Case strengthening, dog gears, an extra primary drive chain (so 4 instead of usual 3) steel drivers, it's based on a 'chillcast' 4-speed case which is naturally stronger anyway. It sold in the UK for several thousand £££, was on eBay for around £5500 but actually didn't make that much.

It still broke. So I'd say my stratergy is better.
 
#23 ·
I have no need for a stronger gear-set. Especially a 'dog-gear'. I still want a comfortable easy driving road car...

But if you came up with a stronger case so I could do a reliable rebuild and maintain a ~300hp trionic C900 I'd be very interested.

My efforts are switched to a 9K now because I (feel I) can't realisticly maintain a C900 for a DD for the next 15 years because of lack of tranny availability....
 
#24 ·
I'm still trying to wrap my head around putting $5000+ into the transmission of a vehicle that's worth - at tops - maybe...$5000

:confused:
 
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#26 ·
Banman said:
Not me, I'm drinking coffee and iceing my knees--I do a lot of that...;)
Click to expand...
Ya...$5K would buy a lot of coffee. Shoot, that's a down payment on a knee replacement! :)

I would think you could rebuild 2 trannys for that kind of money

Still :confused:...
 
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#27 ·
scantar said:
Ya...$5K would buy a lot of coffee. Shoot, that's a down payment on a knee replacement! :)

I would think you could rebuild 2 trannys for that kind of money

Still :confused:...
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Not all the parts are available to rebuild my current tranny (a '92). When it goes I'll be done with C900's...:cry: (unless new tranny parts become available!)
 
#28 ·
Eriksson Industries in Connecticut is the best source I know of for 900 transmissions and parts; have been since the '80s. They're also a relatively small company. You could call them up and ask how much $ for the toughest box they can build. I bet it's less than $5k.
 
#29 ·
This is the reason to try and find items to produce that will keep these unique c900 alive, especially for the saabsters that have these cars and want to keep them going with the added benefit of putting extra power through them, having the piece of mind that everything will hold together for say 400hp. All your points are valid but I may look at things a little differently.
 
#30 ·
The original design is meant to be solid for the 1969 Saab 99 with 1800cc and a single carb. There are many variations over the years which substantially increase strength but the Saab t16 motor makes a lot of torque when tuned.

If you want a transmission that can take 400hp then either get a car that can do it and tune that instead or take the transmission from a car that can handle that sort of power and retrofit it to the 900.

I'd say you could reliably run 200-300hp through a good standard 900 box as long as you're not irresponsible with that power.

The Audi Quattro transmission from an early Audi Quattro can take 1500hp. It's developed from a very early semi-agricultural vehicle and only different because it has a centre diff. It's bullet proof. To fit that system to a Saab is possible because it has been done. You could do that and save yourself a lot of hassle if you must have that sort of power in a classic Saab bodyshell.
 
#31 ·
Iron joe had a standard 5 speed box and was putting 400 through it. It's how it's put through but upgrades help.

The autobox is a better unit for a super Saab. Ludichris has 400 through his reliably. He has done some special internal mods.

Great thing about autos is the gearsets are massive.

It's all relative. Of course boxes break when the bearings are worn. Of course the gears break when they're old and brinelled. It's about age as well.

The new gearsets I'm sure are strong. Haven't heard anyone break one of those as of yet. But they made 20 sets with extra 2nd and 3rd gears if I remember correctly so someone is planning on it.
 
#32 ·
ejenner-2.0 said:
The original design is meant to be solid for the 1969 Saab 99 with 1800cc and a single carb. There are many variations over the years which substantially increase strength but the Saab t16 motor makes a lot of torque when tuned.

If you want a transmission that can take 400hp then either get a car that can do it and tune that instead or take the transmission from a car that can handle that sort of power and retrofit it to the 900.

I'd say you could reliably run 200-300hp through a good standard 900 box as long as you're not irresponsible with that power.

The Audi Quattro transmission from an early Audi Quattro can take 1500hp. It's developed from a very early semi-agricultural vehicle and only different because it has a centre diff. It's bullet proof. To fit that system to a Saab is possible because it has been done. You could do that and save yourself a lot of hassle if you must have that sort of power in a classic Saab bodyshell.
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Yes, that's true and I'm also aware of the Saab 99 Quattro but by turning the engine 180 degrees, fabricating engine mount brackets and then getting modification plates and getting it made street legal here in Australia would turn out to be a nightmare (I think). But yes the Quattro system mounted to the SAAB power plant is a total V8/V10 killer!
 
#33 ·
#34 ·
ya but it failed from oil starvation :p

haha I swear he had said once he had 400hp too (when I mentioned that an aussie has 400whp through an autobox

seriously ludis car is a weapon
 
#35 ·
I think it could be possible to make a gearbox last using t5 and mapping the torque curve as conservatively/flat as possible. It seems the massive onset of torque as the bigger turbo's kick in is what starts putting extra stress on the gearbox. Build it right with a smaller turbo/not as much "Thrust you into your seat" torque and I think they could handle more power. It's not the Horsepower numbers we need to look at, it's the torque. Saab 4 cylinders make a lot of torque for what they are, and I think that is what does the gearbox in.
 
#39 ·
The clutches and bands won't slip, It's a BW37. It's father, BW35, was tough enough behind V12 Jaguar motors and pushing Ford Econoline vans; my 460 cid International Travelall had one too.
 
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