Turbo pistons or not?

Eric · Post by **Eric** » Mon Nov 06, 2006 8:19 pm

This is off topic... but I'm too curious not to ask. I ordered used stock 1G turbo pistons and rods. I still haven't gotten them, but what appearance differences should there be? Supposedly the lands are larger and so there would be more space between the rings, but I don't see it in the photos of the turbo pistons...

For reference, these pistons are from my non-turbo 1G '90 6-bolt "eclipse" motor:

Post by **DJpowerHaus** » Mon Nov 06, 2006 8:51 pm

My guess is that the only difference is the dish in the piston.. but that's just a guess.

jeffball610 · Post by **jeffball610** » Tue Nov 07, 2006 6:43 pm

1G Turbo pistons are 7.8:1. Non-Turbo are 9:1. According to Chilton's the 1st ring groove width is 1.21-1.23mm turbo and 1.22-1.24 non turbo. The only other difference is the piston to cylinder clearance. There will be a noticable piston relief on the turbo pistons. The non-turbo's are flat with valve reliefs only. (i think)

Eric · Post by **Eric** » Tue Nov 07, 2006 9:35 pm

Thanks, I will see in a day or so when I get the turbo pistons.