I change my car`s viscous coupling and share with you
its very handling now, its very important part.
Car always oversteer when turn fast cornering before, now its like a train
You need drive car an half hour before the test. Vc must be come to operating temperature.
(thanks to @nick and @Barış from subaruimpreza.org forum)
Jack test:
wheels must be turn same speed when after car is moving
[ame]www.youtube.com/watch?v=Qt3jJAPvJ-0[/ame]
Before
you can see, rear wheels turn many time
and after the car move rear wheels turn faster than front.
[ame="http://www.youtube.com/watch?v=Dwsz9dLYutk"]Alfa 155 Q4 old viscous - YouTube[/ame]
After
rear turn just quarter before moving
then turn same speed front
[ame="http://www.youtube.com/watch?v=EvAYR8nE4TY"]Alfa 155 Q4 new viscous - YouTube[/ame]
This is handy check:
lift car, gear is neutral position and handbrake on (lock rear wheels)
Before
[ame="http://www.youtube.com/watch?v=vlqyVUpIO9k"]Alfa 155 Q4 old viscous - YouTube[/ame]
After
[ame="http://www.youtube.com/watch?v=_poBMRqSCec"]Alfa 155 Q4 new viscous - YouTube[/ame]
some pictures about viscous coupling:
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