Ok to dig up the suck thru tpoic again - who knows which (factory) turbo was released with an in-built carbon seal?

I have a pair of RX7 13B twin turbos and rumor has it that they have carbon seals... The big one looks like it'd go nicely on an A12.

These are cheap as on ebay - nobody wants them (I got them with a motor I bought for my RX2 and I didn't want them either )

I'll try and get some data on them...