I need to know the torques specs for the head bolts on a 1991 vw passat, can you help
I,m assuming that you have the head off for some reason. So before you put it back together you need to know a couple things. Make sure your crank is lined up with your timing mark for TDC BEFORE you put the head on the engine. Also the timing marks on the head have to be lined up BEFORE you put the head on. If they don't do this properly you will bend valves when you try to get it lined up.
The head bolts must be tightened in a specific order or the head will crack.They must also be removed in the reverse order. The five bolts on the exhaust side of the engine are numbered from the timing belt in this order: 10-4-2-6-8. The five bolts on the intake side are numbered from the timing belt in this order: 7-5-1-3-9. Sorry I can't send pics so maybe draw this out before you start, basically it a set of X's.
timing 10 4 2 6 8 distributor
belt 7 5 1 3 9
The torque is done in 3 stages. The first torque is 30 ft-lbs (40Nm). The second torque is 43 ft-lbs (60Nm). The third torque is 1/2 turn or 180 degrees. This final torque can be done as 2 1/4 turns or 90 degrees if you wish. Hope this helps.
May 18, 2011 |
1991 Volkswagen Passat