IMS Bearing install Question?

[JFP in PA]

Just to put a cap on this debate, with a five chain motor, it is possible to swap the IMS without locking the cams. That said, in doing so, you still run a level of risk of the M96 jumping time. While they don't always jump time, they still can, and sometimes do. The reason shops lock the cams is that we are not in the business of assuming risk; locking the cams assures there will be no problems, period.

It's your car. If you want to accept the risk, then don't lock the cams. In most cases, you will probably be fine; but if it goes wrong, you are going to be in for some very expensive fun.......

[insite]

i had this discussion w/ charles last week when i ordered my IMS bearing. he said that indeed we SHOULD lock the cams, but that generally, not doing so, as long as the motor is locked to TDC, will probably be okay.

his advice to me if i choose NOT to lock the cams (which i will not, btw) is to pull the green plugs & mark the cam positions. this way, if i jump time, i will be able to tell that it has occured & have the problem rectified before i fire it up & cause damage.