Thread: Trouble starting when hot

yeah, my battery is in the trunk and I use an Optima battery. Fires right up!

a lot of things could make it hard to start: too hot(making piston to wall clearences too tight,not enough ground cable(motor to frame,motor to battery,battery to frame, all neg.)bad contacts in starter relay.pos and neg wire not big enough. go back and double check every thing. _________________ 90' coupe,302,flattop forged(9.6 comp)pistons,fully ported windsor sr. 2.05"/1.60",scat rods,head and main studs,main cap...

i'm with hotroady on this one, when the resitance at the starter windings go up because of heat, you need some hefty battery cables to pass enough current to turn the starter. my old truck used to melt cables and a starter relay when trying to start hot. normally a fresh starter replacment would cure it, but i had these monster battery cables off a diesel generator, that i swaped in and bingo no more starting problems.. and i still using...

Would 2/0 gauge wire work well? (4/0 is stock, right?)

kevin wrote: Would 2/0 gauge wire work well? (4/0 is stock, right?) Stock would be 4 Gauge NOT 4/0 Big is good but 2/0 might be over kill. Kind of depends how long the run is and if you got the room.