>Date: Sat, 14 Nov 2009 01:53:21 -0600
>From: "KStevenson" <[email protected]>
>Subject: RE: [alfa] Re: Testing for LSD (was: Speedo Check)
>
>....Ken, compliments on getting your Q2 unit installed. You must have a FWD
>Alfa, is it a 164? Did you take the whole transmission out or just remove
>the differential cover? How do you like it? ......
>
> 
>
>Sonny, you make a very, very good point about the many LSD variations and
>all the testing variables.  
>
> 
>
>The Q2 unit is installed, yet the engine/transaxle assembly is not bolted
>in. The application is a RWD Lancia Scorpion/Montecarlo. Kind of motivated
>now to get it on the road to see what it is all about. The engine is a
>Lancia Thesis 3.0 24V that coincidently shares most parts with Alfa V6
>engines. 
>
> 
>
>Regards,
>
>Ken
>

Hi Ken, great to hear about your Lancia Scorpion/Montecarlo project. I read 
about Paul Millet's similar Alfa V6 conversion in Phil Ward's 2002 book Twin 
Cam Italia. 

When you say that the Lancia Thesis 3.0 24V coincidentally shares most parts 
with Alfa V6 engines, it might sound (probably unintentionally) as though you 
are unfamiliar with the history. In any case, I will clarify for those who 
might be interested. From 1992 on, Lancia used a slightly detuned version of 
the 12V Alfa 3.0 V6 in the Thema, the sedan that was co-developed with the 164 
(previous Themas had used the less refined PRV Peugeot-Renault-Volvo V6). The 
Alfa V6, as it developed into a 24V engine, continued to be used in successors 
to the Thema. As it happens, the 164 used the same Fiat transaxle as the Thema 
right from the get-go, even though the 164 had been in development long before 
Alfa was absorbed into Fiat in 1987. 

A few years ago, before the Q2 Torsen differential became available, I mounted 
a Lancia Viscodrive limited slip on my 164. It was very easy because of the 
shared parts between the two marques. I like the result very much but would be 
interested in knowing how Viscodrive and Q2 compare in performance. I was 
thinking that maybe some Lancisti may have actual side-by-side experience of 
the two systems.

Looking at pictures of the Q2 differential and knowing how the Viscodrive 
system works with its dog clutch to attach the differential and the viscous 
coupler to each other, it seems like the two systems could be combined for 
maximal efficacy. I did ponder on doing so on my 164, but I am so happy with 
how it works now that I am afraid to go overboard. But maybe Q2 + Viscodrive 
would work in a track application.

Cheers,
Sonny
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