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 Post subject: Quaife 6 speed gearset
PostPosted: Fri Jan 24, 2020 10:54 pm 
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Car Model: CD Carlsson, 9-3 Turbo
So i’ve recently had my quaife gearbox rebuilt by abbotts.

Firstly, it needed a new input shaft and end casing due to someone fitting a brass bushing in the casing instead of the roller bearing. After getting the bushing out of the old casing its clear that its had a bearing collapse at some point. Are these a weak point on the quaife boxes?


Secondly, does anyway know the final drive options that were available from quaife? My gearbox casing is from a viggen so its says 4.05 but i think that may be irrelevant. I was told its geared for 205mph at 7000rpm and i fully believe that from how long 6th is. 5th goes to 110mph at 7k and then 6th drops a good 3k+ rpm.

And lastly, is there an early and a late gearset? Mine is fuly straight cut not semi helical.

Tell me everything you know about the quaife boxes.

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PostPosted: Sat Jan 25, 2020 10:52 am 
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Don't mean to sound rude but Speak to Quaife, I would have thought they would be able to tell you in detail absolutely everything you need to know?


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PostPosted: Sat Jan 25, 2020 1:14 pm 
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George / Ylee and Al Philpot may be able to add some info....

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PostPosted: Sat Jan 25, 2020 1:31 pm 
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Car Model: CD Carlsson, 9-3 Turbo
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Don't mean to sound rude but Speak to Quaife, I would have thought they would be able to tell you in detail absolutely everything you need to know?


Yeah thats fair but im really looking for the experience from others who have run them. I’ve spoken to quaife before and i found it hard to talk to them. Maybe just me but still.

Im after the reliability aswelli and i doubt quaife ran a high powered saab for a few years to test them

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PostPosted: Mon Jan 27, 2020 6:10 pm 
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You probably need to track down the owner that had it ordered as they were different ratio options I think. Sounds like yours was set up with road use in mind with such a high top and such a big rpm drop in top. The std thing for competition boxes is that the ratios usually get closer and closer together as you go through the box.


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PostPosted: Mon Jan 27, 2020 6:11 pm 
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Why carnt Abbots tell you? I note everything like that down if stripping a box or engine?


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PostPosted: Mon Jan 27, 2020 6:41 pm 
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Quaife site says top is 0.704:1, final drive 4.017, multiply them together and convert via wheel dia and rpm to mph.


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PostPosted: Mon Jan 27, 2020 9:14 pm 
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Car Model: CD Carlsson, 9-3 Turbo
The ratios on the quaife site just don’t look right for mine, 1-5th have about 3-400rpm between them if i remember. Its going back in tomorrow so shall see then.

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PostPosted: Sat Feb 15, 2020 4:19 pm 
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Location: Fliptop Towers, Trumptonshire
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What's the origin of your box? My Quaife has a sixth that is lower than standard fifth. I'll see if I can dig out the ratios...

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PostPosted: Sat Feb 15, 2020 11:04 pm 
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the original spec for the 9000 gears was 6th=5th in the std box ,the intention was to take away the jump from 2-3 rd iirc ,the final drive determines the gearing ,a 4.05 box will have a top speed of about 140 with good acceleration, the aero final drive @3.66 tops out at 175 ish at the std rev limit (the ecu will restrict boost in top to limit it to 150) at 7000 its about 185 ,not 205 ( I saw 6,800 on mine..... )

And I had 2 bearing collapses ,its to do with how you build it (speak to martin at Central Saab ) it is a weak point

Fully straight cut ? .oh my ,that must whine like a female dog, that was never discussed as an option when we developed it

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PostPosted: Tue Mar 31, 2020 6:10 pm 
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Location: Fliptop Towers, Trumptonshire
Car Model: One or two...
Found the ratios from mine, FD is 4.05:1

Sorry, formatting is Harry Rollocks when pasting from my spreadsheet but if you paste it into a table or excel, it should work...

Gear Quaife Ratios mph/1000 6500 Stock mph/1000 6500


1 3.000 5.92 38.47 3.38 5.25 34.14
2 1.933 9.18 59.70 1.76 10.09 65.57
3 1.368 12.98 84.36 1.18 15.05 97.80
4 1.045 16.99 110.43 0.89 19.95 129.66
5 0.833 21.31 138.54 0.66 26.90 174.85
6 0.701 25.33 164.62

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PostPosted: Mon Apr 13, 2020 11:15 pm 
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Pretty sure mine has the same ratios as Al’s.

Great for track and twisty B roads, but I prefer original 5 speed ratios.
1st is long, 2nd is a waste of space and 3,4,5 are power pull gears.
6th is far too short for high speed cruising, as Al says it’s shorter than the old 5th!!
I use mine as a daily on road and would prefer a much higher 6th gear for high speed (quiet) cruising.

I take ‘The Saab Lad’s’ comment re speaking to Quaiffe. Might as well talk to your reflection in a mirror.

Only trouble I ever had, was not selecting gear at Bedford trackday in the pits, and issues with 5th jumping out when moderating throttle.
Otherwise I reckon it’s sound to push 2 bar through it :twisted:

Kev
SOULFIRER
:mrgreen:

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PostPosted: Fri May 15, 2020 9:38 pm 
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Location: Fliptop Towers, Trumptonshire
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soulfirer wrote:
Otherwise I reckon it’s sound to push 2 bar through it :twisted:

Oh it'll handle more than that, Kev ...mine peaked at 2.2/2.3 :lol:

What mine didn't like was the chuffin thing hitting overboost on a regular basis in the early days, sending a massive shock through the drivetrain when it cut the fuel. At least THAT aspect is now sorted... :roll:

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