I have some shaft play on my stock turbo with 128xxx miles on it and I'm upgrading to a z54 and have a couple of questions. Are the banjo washer for the Coolant and oil lines reusable and how many of each are there? Also once everything is back together should I pull the coils and turn the motor over to prime the turbo with oil prior to starting?

 

The banjo gaskets are not technically reusable. I'd replace them since you're there, should be 5 in total, 3 coolant (2 on coolant feed, 1 on turbo coolant drain) and 2 oil (1 on the block, 1 on turbo). I would get a oil drain gasket also, and the O2 elbow gasket both sides (same gasket just need 2).

Pull the fuel pump fuse and hold the throttle to the floor to prime the turbo (holding the throttle to the floor should tell the ecu not to fire or inject fuel, but to be sure pull the fuel pump fuse). Additionally I'd put some oil in the turbo before the oil feed is connected to aid in lubrication during priming.

 

Just to add, should only be 3 banjo gaskets for the Z54. The oil feed is getting swapped to braided line, unless ZZP changed how they do things

 

Thank you

 

Good catch, I was thinking of the stock lines.

 

Does anyone have the torque specs for bolts?