slideAdime

im new to rx7's and i was wondering what the stock turbo size is on a 93+ twin turbo?

Tesshin818

Hitachi HT12 turbos I just cant remember the size....

slideAdime

thanks, im on another forum. theres a guy on there putting the twin turbo's off a seven on a 2.2l s10.

Tesshin818

Stock, the 3rd Generation RX-7 comes with twin Hitachi HT12 turbochargers with a 51 mm, 9 blade turbine and a 57 mm, 10 blade compressor. (Pettit Racing) Heres a good site for some general Info http://www.turborx7.com

Tesshin818

No Prob I'm in the same boat as you... I'm picking up mine at the end of the month.

slideAdime

im in the middle of building an s10. i wont have one for a while. but i know forums are a good place for info.

Oneiros

Bumping this thread, does anyone have further specs on the size like turbine a/r etc. Thanks

Mahjik

iTrader: (1)

This is about the most you'll find on the stock twins:

https://www.rx7club.com/3rd-generation-specific-1993-2002-16/compressor-map-gurus-ive-got-stock-twins-map-505850/

Oneiros

Yeh I saw that one lol thanks, doesn't help much without flow and pressure indications tho :/

The FD turbs are a bit big for what I'm after I think, slightly larger than the stock 12at turbs which have the roughly .6 a/r turbine, I'm after something smaller still for a low boost twin setup.