I am planning valvetrain upgrade for my m10 turbo motor. I am running fairly big turbo and i would benefit from the higher redline for the broader power band.
Currently i am revving it to 6.7k on the stock cam and i must say it pulls all the way but last 600-700 rpms feels fairly flat.
I am planning to run catcams turbo cam for less overlap and rev it to 7.5-8krpm. I might also try IE302 if cat cam wont like to rev.
I am also planning to run KM CAMS rockers which are heavier than aluminum. Valves will stay stock for now as long as they can handle the rpms.
The question is how do i determine the proper valve spring seat pressures?
Cat cams have the set of spring to go with their cam however, i might need to compensate for the heavier rockers.
I would appreciate Your advise.
a little 3rd gear action to keep you entertained