1363 piston kit trouble

[BrianR]

I have a buddys Busa at my house to try and help him address a problem with valve/piston tapping on a 2000 with a 1363 Piston kit and turbo installed. Now I have not test ridden it yet, but he tells me he thinks the pistons of valve are loose because he's getting a lot of clatter. He asked me to just pull the motor so he could take to a shop for rebuild. I can do that, but I thought I would try to diagnose it a bit before spending the time to pull the motor. Now I understand a turbo will typically work your engine extremely hard and may lead to problems down the road. Since I'm not a sport bike guy (typically Harleys) I thought I would check with the forums to see if anyone had any suggestions for me to look at to address the tapping.

I know this is not a lot to go on so far. I will post additional details as I discover them

Thanks in advance.

BrianR

[Abusive]

Cam timing should be checked, and if pistons were recently installed make sure the the intake side is on the intake side.

[PrimalBusa]

Make sure you have the correct gasket for the overbore piston set.
Hopefully the kit came with the correct one. Even a head gasket that is 1mm smaller than the pistons will cause the larger pistons to slam into the head gasket. This is very uncommon but still happens.