krazykoo

Hey guys, I finally decided to rebuild my motor after 185,000 miles. It was been put back to stock the last year, but had a turbo in it the previous three years. Motor ran fine with turbo and tune. It was running fine after putting it back to stock until a couple of months ago. It was misfiring and I performed a compression check and cylinder three was at 60psi. This pass weekend, I tore down the motor and found out that three pistons had broken ring lands and piston three was starting to detonate. It was odd that the three pistons had broken ring lands at the same spot of the pistons. Can it be a poor design from toyota? Well, enjoy the pictures guys! Even with broken ring lands, they were still pushing out 120psi. I do have a question for everyone. Where can I find oversize pistons with the stock compression ratio? Or do I have to custom order them?

Thanks,
Kue

pstoltz89

at what mileage did you turbo your tc?

krazykoo

I had it turbo around 50,000 miles.

tcturbo07

wow thats alot of boosted miles you put on in three years. how much boost did you run?

krazykoo

Yeah, hella miles commuting back and forth during those college years. I was boosting around 10psi.

1E0_Tc_05

How worn are the cylinders?? Was the car running sluggish before you tore it apart? What was you driving like? Light ? Medium? Or lead foot?

pstoltz89

what kit did you have and what kind of miles did you put on the car? Long distance drives or was it mostly city driving?

krazykoo

The cylinders were in great shape except for cylinder three in the pic. It had a small dent. The car was running sluggish before I took it apart. It would studder and die out when the ac was on. I drove it normal after the turbo was off cause I was trying to baby it so it wont blow up. I started out with a greddy kit and then finished off with a dezod kit with a different turbo. I was driving a combination both highway and city.

joohnn

you should do the rebuilt with some high comp pistons and do an NA build

krazykoo

Yeah I really want to do a NA build, but I'm not sure about having it pass CA smog. I would have to get pistons, rods, cams, and stand alone to make it worth building a NA. All that is gonna add up quick. LOL!

mrexotica

If you bought your second turbo from Dezod, I would talk with Dezod about the proper rebuild parts. He works with DG Spec Dan Gardner's Turbo tC race car.