73 240Z Rings!

[TraeZ]

My 73 240 is in need of rings, right away! The only ones we can find are cast iron and there is no way I'm putting that in there! Datsun/Nissan no longer makes the rings to fit this car and aftermarket can't get here til tuesday. Any suggestions?

Thanks,

TraeZ

[LanceM]

What kind of rings are you wanting to put in if not cast iron? Chrome?

[TraeZ]

Yes, I was told that the cast iron ones would eventually cause me to blow a piston and have to redo the enitre overhaul! Is there different info?

[LanceM]

I'm pretty certain that the car came with cast iron from the factory. Few engines come originally with chrome from the factory, the only one I can think of off hand is the old Pontiac 455. Chrome rings are harder than cast iron and will last longer but can be a bear to seat. I've heard of cases where chrome rings never seated.

I would go with the cast iron, that's probably what you would have gotten from the dealer if he still stocked them. Properly fitted they should give you good long service.

[TraeZ]

Lance, thanks for the info, we did go with the cast iron ones and it runs like a stallion! I left it in Tulsa for now since it has a new engine and needs that break in time at lower, slower speeds!

Can't wait to bring her home and pamper her here!!