Author Topic: Beta Limited Slip Diffs  (Read 6708 times)

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Offline SanRemo78

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Beta Limited Slip Diffs
« on: February 11, 2025, 05:00:01 PM »
I don't propose adding to historical threads just yet. I'm in touch with Quaife Engineering investigating their LSD options for the Beta. So far it's yes, they are available but it's a special order item, not an off the shelf solution. I've asked for a price (and am sat down waiting for the reply) but have asked them if the price is variable (down!) if they were to make a batch to order. I'm not proposing managing a group buy but rather a group enquiry where I'd forward contact details so they can request an order from each individual before they make a batch.

When I know more I'll post prices/availablity schedules here and see where it goes.

Experience with the Stratos replica fitting a Quaife ATB differntial is nothing but positive in terms of ease of installation and performance. I'm getting one for the Beta...

Guy
Hawk HF3000 - Square Arch Stratos Replica - owned since 1988.
Skoda Superb Scout 2021. Believed 1of 1 in the UK!
Fiat Panda 100HP and now -
A Lancia Beta Coupe 1981 2 Litre

Offline betabuoy

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Re: Beta Limited Slip Diffs
« Reply #1 on: February 11, 2025, 07:00:54 PM »
I’ve wondered about this for some time. Extremely interested to hear developments please Guy.
Chris
1979 Beta Coupe S2FL (1st registered May 1983!)
1967 Morris Minor Traveller
1925 Austin 7 Chummy

Offline SanRemo78

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Re: Beta Limited Slip Diffs
« Reply #2 on: February 12, 2025, 09:27:47 AM »
Quaife have contacted me, a group or batch order would bring down the price but the diff is expensive and listed as for a Montecarlo and there is a choice of 31 or 26 teeth on the output splines. I don't know enough about the Montecarlo's gearbox in comparison to the Beta but doesn't it have a long offside driveshaft that's bolted to a flange similar/same as the nearside? Is the output shaft on the Beta's offiside removable? Never tried to dismantle one!

More to follow.

Guy
Hawk HF3000 - Square Arch Stratos Replica - owned since 1988.
Skoda Superb Scout 2021. Believed 1of 1 in the UK!
Fiat Panda 100HP and now -
A Lancia Beta Coupe 1981 2 Litre

Offline SanRemo78

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Re: Beta Limited Slip Diffs
« Reply #3 on: February 12, 2025, 10:22:16 AM »
Pricing, subject to confirmation that the Montecarlo diff is interchangeable with the Beta diff are as follows per Quaife:

"Further to your enquiry for this diff on messenger, pricing for QDH7K diffs would be as follows:

1 off: £5,000.00 each
2 off: £3,000.00 each
3 off: £2,200.00 each
4 off: £1,750.00 each
5 off: £1,350.00 each
Prices are plus VAT (if applicable)"

How much more of a discount we could negotiate if we had orders for 10 I haven't asked. Lets see where this goes for now.

If the possibility of using an Alfa 164 Q2 diff comes to nothing the I would consider buying one at £1620...

Guy
Hawk HF3000 - Square Arch Stratos Replica - owned since 1988.
Skoda Superb Scout 2021. Believed 1of 1 in the UK!
Fiat Panda 100HP and now -
A Lancia Beta Coupe 1981 2 Litre

Offline peteracs

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Re: Beta Limited Slip Diffs
« Reply #4 on: February 12, 2025, 10:52:36 AM »
Maybe post on FB and ask to post on monte consortium?

Peter
Beta Spyder S2 pre F/L 1600
Beta HPE S2 pre F/L 1600

Offline WestonE

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Re: Beta Limited Slip Diffs
« Reply #5 on: February 19, 2025, 08:16:58 AM »
Hi Guy,

I have built both Monte and Beta Gearboxes and built VX bits into Monte casings. The output splines on the diff are the same. However the Beta output engine side has no thread for a nut to hold the needed flange on a Monte. With both output shafts threaded the beta idler that goes behind the block with still work with the slide on coupler.

You need to publicize this with the Monte Consortium or simply post on the Consortium FB page and tag Paul Courteney. They would have the design from when Geoff Ward was racing.
We tried Gripper plate LSDs but they are racing only kit in a Monte as I found out personally. My Gripper is built into a gearbox for my Beta Spyder build.

Eric
 

Offline Dynomax

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Re: Beta Limited Slip Diffs
« Reply #6 on: February 19, 2025, 11:02:58 AM »
I would definitely be interested in a quaife diff if the price was right. It would be interesting to see what they can do for an order of 10.

Offline SanRemo78

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Re: Beta Limited Slip Diffs
« Reply #7 on: November 29, 2025, 09:06:58 PM »
Looks like the Quaife route went nowhere, has anyone seen this one? I wonder if it's worth a punt?

https://www.tractionconcepts.com/Lancia-Beta-Limited-Slip-LSD-Kit-p/tcxl4511.htm

Guy

Hawk HF3000 - Square Arch Stratos Replica - owned since 1988.
Skoda Superb Scout 2021. Believed 1of 1 in the UK!
Fiat Panda 100HP and now -
A Lancia Beta Coupe 1981 2 Litre

Offline Ferrit

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Re: Beta Limited Slip Diffs
« Reply #8 on: November 30, 2025, 12:04:17 AM »
Did we ever find out how much for 10x 'normal' Quaife LSD's?

One day I would love one

The other ones sounds like witchcraft :-)
Lancia Beta Coupe 2000 SA import, now project
VW Caravelle t5.1 was project
Merc EQA

Offline SanRemo78

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Re: Beta Limited Slip Diffs
« Reply #9 on: November 30, 2025, 08:09:25 AM »
£1350.00 for anything over 5.
Hawk HF3000 - Square Arch Stratos Replica - owned since 1988.
Skoda Superb Scout 2021. Believed 1of 1 in the UK!
Fiat Panda 100HP and now -
A Lancia Beta Coupe 1981 2 Litre

Offline betabuoy

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Re: Beta Limited Slip Diffs
« Reply #10 on: November 30, 2025, 09:18:37 AM »
Guy,

What sort of demand are you currently aware of for a Quaife LSD order at that price? Do you have a list?

Chris
1979 Beta Coupe S2FL (1st registered May 1983!)
1967 Morris Minor Traveller
1925 Austin 7 Chummy

Offline SanRemo78

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Re: Beta Limited Slip Diffs
« Reply #11 on: November 30, 2025, 10:04:48 AM »
Well, there's me. Nobody else has committed to this yet.

So, one so far.
Hawk HF3000 - Square Arch Stratos Replica - owned since 1988.
Skoda Superb Scout 2021. Believed 1of 1 in the UK!
Fiat Panda 100HP and now -
A Lancia Beta Coupe 1981 2 Litre

Offline SanRemo78

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Re: Beta Limited Slip Diffs
« Reply #12 on: November 30, 2025, 10:07:13 AM »
Also, I suspect the £1350 price is plus VAT and shipping....
Hawk HF3000 - Square Arch Stratos Replica - owned since 1988.
Skoda Superb Scout 2021. Believed 1of 1 in the UK!
Fiat Panda 100HP and now -
A Lancia Beta Coupe 1981 2 Litre

Offline betabuoy

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Re: Beta Limited Slip Diffs
« Reply #13 on: November 30, 2025, 10:31:33 AM »
Perhaps it’s time to draw a line under this with an accurate updated price and an order deadline? That way we should flush out the maybes to see how many will commit and see if it’s viable.
1979 Beta Coupe S2FL (1st registered May 1983!)
1967 Morris Minor Traveller
1925 Austin 7 Chummy

Offline Ferrit

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Re: Beta Limited Slip Diffs
« Reply #14 on: November 30, 2025, 01:13:53 PM »
I think if you were all putting an order in I would go for it.  Just stick it on the CC and have it for a later date. 

In a couple years I would love to do a more fruity engine build, so an LSD would be good.  I am skint due to kids schools in a year that all finishes.  It all gets better then 😎
Lancia Beta Coupe 2000 SA import, now project
VW Caravelle t5.1 was project
Merc EQA

Offline betabuoy

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Re: Beta Limited Slip Diffs
« Reply #15 on: November 30, 2025, 02:43:56 PM »
I’m in too, so that makes three!
Chris
1979 Beta Coupe S2FL (1st registered May 1983!)
1967 Morris Minor Traveller
1925 Austin 7 Chummy

Offline peteracs

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Re: Beta Limited Slip Diffs
« Reply #16 on: November 30, 2025, 11:04:34 PM »
Maybe ask the Monte crowd, any thoughts Eric?
Beta Spyder S2 pre F/L 1600
Beta HPE S2 pre F/L 1600

Offline SanRemo78

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Re: Beta Limited Slip Diffs
« Reply #17 on: December 02, 2025, 06:32:38 PM »
Price is PLUS VAT and CARRIAGE. Therefore expect a cost of £1700 per unit if we get to 5 in total!

Gulp.
Hawk HF3000 - Square Arch Stratos Replica - owned since 1988.
Skoda Superb Scout 2021. Believed 1of 1 in the UK!
Fiat Panda 100HP and now -
A Lancia Beta Coupe 1981 2 Litre

Offline betabuoy

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Re: Beta Limited Slip Diffs
« Reply #18 on: December 02, 2025, 07:42:39 PM »
We also need to know what percentage slip Quaife recommend.
We don’t really want a full competition item which could be a handful out of a corner. I’m not that familiar with the tech, but for our road use are we looking at 60%? Eric could help us here please?

1979 Beta Coupe S2FL (1st registered May 1983!)
1967 Morris Minor Traveller
1925 Austin 7 Chummy