Holden VR BT1

[WazzaVN]

BT1 usually all the same but that's not to say people have chopped and changed things. OP have a look at the build plate under the bonnet passenger side and see if it has BT1 on it. Some people just assume any ex cop is a BT1.

Yeah true. Anyway! Best way to find out if you have an lsd is to jack up your rear, spin a wheel, if the opposite wheels goes in the same direction it's lsd. If it goes the other way it's an open diff.

 

[Jxfwsf]

Yeah true. Anyway! Best way to find out if you have an lsd is to jack up your rear, spin a wheel, if the opposite wheels goes in the same direction it's lsd. If it goes the other way it's an open diff.

given the age of the car and the flogging it's copped with a bw lsd (& BT1 on the compliance plate) this won't always be the case, quickest way is to pop the back cover off, change the oil and spend the whole $10 on a new gasket and look at the carrier, can even do some quick measurements to tell it's condition and see if it's near reco stage without pulling it apart, either way... unknown condition and age a quick oil change never hurts.

 

[WazzaVN]

given the age of the car and the flogging it's copped with a bw lsd (& BT1 on the compliance plate) this won't always be the case, quickest way is to pop the back cover off, change the oil and spend the whole $10 on a new gasket and look at the carrier, can even do some quick measurements to tell it's condition and see if it's near reco stage without pulling it apart, either way... unknown condition and age a quick oil change never hurts.

Yeah I agree the most sure way is to see where the split is in the carrier. But even rooted lsd's should spin the opposite wheel. It doesn't take much friction in the cones to do it. worth checking though, because a diff oil change never hurts in an old Commodore!

 

[sk2304]

With the BT1's in HWP when in service one vehicle was usually assigned to two blokes who drove it the majority of the time. Rosters pending of course. Even though they were driven hard they were always well looked after, serviced regularly, and any issues quickly identified as they didn't want to be going off the road at 200km/h.

 

[Jxfwsf]

Yeah I agree the most sure way is to see where the split is in the carrier. But even rooted lsd's should spin the opposite wheel. It doesn't take much friction in the cones to do it. worth checking though, because a diff oil change never hurts in an old Commodore!

a truely rooted lsd will simply act like a single legger, when there's nothing left to hold it back once it's flogged out (granted the design has been around for 50+ years, doesn't meant it's the best) it'll just act like a single legger....

With the BT1's in HWP when in service one vehicle was usually assigned to two blokes who drove it the majority of the time. Rosters pending of course. Even though they were driven hard they were always well looked after, serviced regularly, and any issues quickly identified as they didn't want to be going off the road at 200km/h.

All good n well, but the auto trans i have sitting under the bench tells a different story, apparently it only had problems in 2nd, the accumulator springs are broken, some clutches are missing teeth and the reaction assembly was in.... hell i can't count that high... millions of pieces if what i found in the pan were anything to go by.... lol, was removed from a 304 bt1, simply if it has a BT1 mark on the compliance plate it's been thrashed... even though they get retired and auctioned off doesn't mean every tom, tard and wanker don't buy em and flog the **** out of them thinking they have a "cop" doritos in the boot that gives them more HP....