If you own a 6cyl bmw between 1993-2006 you have vanos... what it does is it magically gives your bmw a super flat torque curve :rollsmile:
problem is the magic stops because unfortunately bmw fitted seals made of the wrong material and some have been found to fail after just 32 000km...
how does this loss of magic affect you... well it affects the low down torque alot so you can expect to be using more fuel because timing is not where it should be when driving normaly... when they get really bad your idle will be rough and you could find takeoffs tricky because the engine will want to bog...
so why these seals... the oem seals are made of Buna (Buna-N, NBR, Nitrile) and dont last well under the conditions they work in... these beisan systems seals are made of Viton (FKM, Fluorocarbon) which has similar mechanical properties to Buna but last under the conditions so your vanos can do its magic :joy:
BMW has been asked about this problem and have said “No further development will be done†because lets face it an old slow gas eating bmw makes the new ones look even better
Vanos Seals Failure Affected Automobiles
Single Vanos
BMW 6-cylinder engines M50TU, M52, US S50, S52, 1992-1999
3-series E36 93-97, 5-series E34 93-95 / E39 96-98, 7-series E38 95-98, Z3 Roadster 2.8 E36 96-98, EU Z3 Coupe 2.8 E36 96-98, US M3 E36 94-99, US Z3 M E36 98-99
Double Vanos
BMW 6-cylinder engines M52TU, M54, M56, 1998-2006
3-series E46 98-05, 5-series E39 99-03 / E60 & E61 02-05, 7-series E38 98-01 / E65 & E66 02-05, Z3 E36 98-02, Z4 E85 02-05, X3 E83 03-06, X5 E53 00-06
e36 M3
S50b30
S50b32
problem is the magic stops because unfortunately bmw fitted seals made of the wrong material and some have been found to fail after just 32 000km...
how does this loss of magic affect you... well it affects the low down torque alot so you can expect to be using more fuel because timing is not where it should be when driving normaly... when they get really bad your idle will be rough and you could find takeoffs tricky because the engine will want to bog...
so why these seals... the oem seals are made of Buna (Buna-N, NBR, Nitrile) and dont last well under the conditions they work in... these beisan systems seals are made of Viton (FKM, Fluorocarbon) which has similar mechanical properties to Buna but last under the conditions so your vanos can do its magic :joy:
BMW has been asked about this problem and have said “No further development will be done†because lets face it an old slow gas eating bmw makes the new ones look even better
Vanos Seals Failure Affected Automobiles
Single Vanos
BMW 6-cylinder engines M50TU, M52, US S50, S52, 1992-1999
3-series E36 93-97, 5-series E34 93-95 / E39 96-98, 7-series E38 95-98, Z3 Roadster 2.8 E36 96-98, EU Z3 Coupe 2.8 E36 96-98, US M3 E36 94-99, US Z3 M E36 98-99
Double Vanos
BMW 6-cylinder engines M52TU, M54, M56, 1998-2006
3-series E46 98-05, 5-series E39 99-03 / E60 & E61 02-05, 7-series E38 98-01 / E65 & E66 02-05, Z3 E36 98-02, Z4 E85 02-05, X3 E83 03-06, X5 E53 00-06
e36 M3
S50b30
S50b32
