I noticed when I pulled my 392K head that the exhaust seats were fairly scorched and a few of the stems had galled.
Back in the day we used exhaust valve rotators to eliminate hot spots and keep the valves and guides wearing evenly.
Makes me wonder if my heads would not have cracked around the exhaust ports if the heat was being dissipated properly.
It would be smart to use them, but I haven't yet found a source.
Re: Exhaust Valve Rotators
by skilletky » Wed Oct 16, 2013 11:05 am
someone had posted something about them over on compd. i think is was in the 1stgen or 12 valve second gen section.
92 d350, arp's, orings, 150lb springs, 4200 gsk ,ground pin ,64/71/14 ,ddp inj's, ats manifold, tim's tubez, ats trans, FASS, locker, timing + a tooth, bcdd intake
2001 2wd rclb dually 5sp, smarty, Bluechip FMS, TS MVP, 57/75 twins, stainless diesel pipe kit, valair clutch, airdog 150, DFI SAC 7x.014's, cheap a$$ intake, ARP studs, oringed head, CPP 115# springs
2001 2wd rclb dually 5sp, smarty, Bluechip FMS, TS MVP, 57/75 twins, stainless diesel pipe kit, valair clutch, airdog 150, DFI SAC 7x.014's, cheap a$$ intake, ARP studs, oringed head, CPP 115# springs
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skilletky - 14mm rotor
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