Originally Posted by
tabetha
Depends on your definition of big power, may running 500+ been using group a for years, inc a 500+ 2wd that has done over 40,000 miles on it, inc every month doing the ring.
tabetha
My group a started weaping coolant between the head and block and pressurising with 350 bhp and 26 psi after 3 years my wrc has done 4 years with no probs at 500 bhp and 36 psi! why take the chance when a metal one is far stronger and superior but i guess its each to there own at the end of the day
