Join Date: Jun 2009
Location: Saipan (!)
Mad Max is offline
Re: Lifters, cam, timing and backfires
Man, I am a DUMBAZZ... Yeah, I did make a few suggestions.
Usually, the cam is the worst wear factor in flat tappet engines. The majority of modern engines have roller cams or overhead cams which do not have the same wear factors involved. Flat tappets have big pressure on them, where ZDDP helps to releive the wear on the interface of tappet to cam. Take ZDDP away and problems develop.
Also, most other engine components are similar in modern engines - like psitons, bearings, rings etc. So, usually you don't see other wear problems overall.
If you replace a worn cam, your engine will act like a new unit.
Especially of you install a performance type grind.
1)'82 S10, 383, 700R4, Shorty
2) '85 S10, 3.4, 700R4 4x4 stretch cab (Redneck)
3) '90 S10 2.5, 5 speed shorty
4) '91 S10, Built 3.4, 5 speed shorty (Voodoo)
5) '92 S10, 2.5, 5 speed shorty, (Barbie)
6) '92 S10, 2.5 5 speed, Shorty
7) 1979 LUV, Buick 3.8 V6, TH 350 Shorty.