twentyeight
Veteran Member
I'm building a T4 (EuroVan) TDI conversion. The plan as of right now is an 11mm pump, VNT1749VB ARP head studs, and larger injectors (the motor has Sprint 520s in it right now, but I'll almost certainly go bigger).
The thing is it's a 1Z from a '96 Passat. My understanding is that the piston pins cannot safely support significantly increased power, and the higher rings have a habit of sticking. I've unfortunately experienced the latter in the middle of the desert.
I have a set of ALH (or AHU, I don't remember and I don't believe there's a difference) pistons, but one has a mark at the edge of the valve impression.
Can I safely file this down? I'm mostly worried about the bore.
The thing is it's a 1Z from a '96 Passat. My understanding is that the piston pins cannot safely support significantly increased power, and the higher rings have a habit of sticking. I've unfortunately experienced the latter in the middle of the desert.
I have a set of ALH (or AHU, I don't remember and I don't believe there's a difference) pistons, but one has a mark at the edge of the valve impression.
Can I safely file this down? I'm mostly worried about the bore.
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