need some help

[biggfurm6881]

What is a good piston to head squish for a rt 70 with a stage 6 crank, I did put in a molassi steel wrist pin bearing in and got rid of the aluminum one, I did put it together and it is right around .015-.018"

[redonkulousruntsracing]

that's tight in my book, at upper rpm's (14k+) up might get the piston slapping the head. I have run mine at .023" for 2 seasons and its has worked well for us.

[ontargetracing]

.017 is what we ran.. no issues

[redonkulousruntsracing]

.017 is what we ran.. no issues
Is that with the stage 6 crank?

I forgot to mention that I use a Malossi MHR crank and we were worried about crank stretch, I would love to tighten it up, but there isnt anyway to check squish at 14k+ that I know of, If i had the stage 6 in there I would feel comfortable with your numbers.

[ontargetracing]

yes, stage 6 crank.

[biggfurm6881]

Thank you and yes stage 6 crank