In my humble opinion simply save your resources and go all in on the Heat Cycler engine, for the same tonnage spread. You'll get plus 7 to speed nothing else but it will save you a world of hurt when it comes to vulnerabilities. The heat Cycler is also much cheaper only coming in at 54 Crystal rather than the Plasma Cores 73 crystal price tag. If you want auto repair that badly save your niodes and buy a R.A.C.E. Engine for 53 niodes and get Speed +10, dodge (1), Proj. Damage +4%, and Auto Repair of (1). Stack em and see much more effectiveness in your mech than something with large percentage of vulnerabilities built in. Sorry but this is a real waste of resources for the Plasma Core, and will just lead to getting your mecha blown up all the sooner.
Submitted by Pat Willis#224534