While visiting local pick n pull yards i found some goodies: holley 2bbl with aod linkage,4 holed orange injectors and gt 40 heads off 96 xplorer. The cyl #8 had/has oily combustion chambers (the #8 plug wire was burnt through which caused oil wash off cylinder wall i guess because of misfire). Would this condition (prolonged misfiring)damage the valves and the head itself? The whole motor looked very clean.
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“Cars are the only thing on earth that will beat you, break you, make you bleed, make you cry, spend all your money, spend all your time, not work and not care that you will love more, the more they abuse you.” -Anonymous -
check the valves for sealing and check the head itself for straightness.sigpic
- 1990 Ford LTD Crown Victoria P72 - the street boat - 5.0 liter EFI - Ported HO intake/TB, 90 TC shroud/overflow, Aero airbox/zip tube, Cobra camshaft, 19lb injectors, dual exhaust w/ Magnaflows, Cat/Smog & AC delete, 3G alternator, MOOG chassis parts & KYB cop shocks, 215/70r/15s on 95-97 Merc rims
- 2007 Ford Escape XLT - soccer mom lifted station wagon - 3.0 Duratec, auto, rear converter delete w/ Magnaflow dual exhaust
- 2008 Mercury Grand Marquis Ultimate Edition - Daily driver - 4.6 2 valve Mod motor, 4R75E, 2.73s. Bone stock -
Anytime you get junkyard heads, you should have them pressure tested and milled....assuming you clean them up and there is no major damage visable...for a few bucks at napa, pick up some valve lapping compound and do a quick lap-in of the valves...it will give you a fresh clean surface between the valve and valve seat, if there is any pitting or cracks or any other malfunction, it will be very noticable at that point.
Good luck,
Don'85 CV coupe- 351W, T5-Z, FAST Ez-Efi, shorty headers, 2.5" duals with knock off flowmasters, 2.5" Impala tails, seriously worked GT-40 irons, Comp 265DEH cam, 1.7rr's, Mallory HyFire 6A, Taylor ThunderVolt 50 10.4mm wires, 75mm t/b, 3G alt swap, 140mph PI speedo, PI rear sway bar, '00 PI booster/MC, 95-97 front spindles, '99 front hub bearings/brakes, '92-'94 front upper control arms/ball-joints, 3.73's with rebuilt traction-lok, '09 PI rear disc swap, '96 Mustang GT wheels with 235/55R17's.Comment
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