Turdbo

ok im building a D over winter and im thinking about having my crank shaft lightened and balanced but i have a few questions....lightening the crank will make higher rpms more achieveable but will it weaken the actual crank itself im shooting for 400hp will it be able to with stand the pressure along with revving out to about 8500? and what should the minimum weight be ?...also how much does something like this run at the machine shop?

Bone1

if you have to ask, you can't afford it

Figure 500 or more for the crank work

JDMFantasy2K

just balance it, i don't believe turbo motors need lightened cranks; least i don't believe in it.

eg_project

Get a good balance and polish. That only costs like $50-$100.

Turdbo

thanks ...

JDMFantasy2K

where? I paid like 275

eg_project

Yay CO! I paid $100 for balancing of all my bottom end parts(crank, flywheel, pulley,pistons,rods,clutch,pressure plate) all balanced to themselves, then eachother. Then I paid $50 for a poslish/magging(check for cracks),check for straightness.

Oscar

just buy a forged, lightweight crank.

Bone1

thats $1500-2000 since none are made, nor needed

Turdbo

well i'll look into it i was thinking about having it done but if it cost more than a aftermarket 1 then i was just going to buy 1 of those///anyway i think im just going to have it balanced and see what happens