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nosiy valve train??

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Author	Topic: nosiy valve train??
ewokeric Gearhead Posts: 216 From: woodbridge, va united states Registered: Mar 2002	posted 10-06-2002 12:56 PM Ok guys i took my mustang on it first round trip to the local car show last night. I arrived a little to late but the during the trip it ran well but i noticed and it is not the first time i noticed this. The valves sound like they are tapping(sewing machine). It is a very low level noise and does not seem to affect the way it runs and it does it hot or cold. I removed the valve cover and check to see if a rocker was ususally lose. Correct me if i am wrong but stock 351heads have positive lock rocker bolts. They seemed to be all tight.Also i noticed only one time that i put the car in first gear and heard a knocking noise comming i think from the engine. Has not done it since. Any ideas or just keep a eye on it to see if it gets worse. Of topic but i pulled 2 of the plugs out and they are running a light gray color is that good cycleders pulled(1,8). eric ------------------ 68 mustang coupe(california special)not real though but looks it(will be nice) 351w/c4 My 68 Coupe [url=http://mustangsamdmore.50megs.com/ewokeric.html] IP: Logged
SteveLaRiviere Administrator Posts: 43394 From: Saco, Maine Registered: May 99	posted 10-06-2002 09:16 PM How's the oil pressure? Do you need an oil change? ------------------ '70 Mustang Mach 1 - '72 Mustang Sprint - '94 F-150 IP: Logged
capri man Gearhead Posts: 6495 From: doerun, ga. Registered: Nov 2000	posted 10-06-2002 09:20 PM does it sound like valves or 1 valve. sometimes an exhaust leak will fool you. good luck IP: Logged
ewokeric Gearhead Posts: 216 From: woodbridge, va united states Registered: Mar 2002	posted 10-06-2002 09:22 PM i have changed the oil and oil filter 2 times since starting it up. I don't know what the actual oil pressure is i just know that when it gets hot the engine when it idles the oil pressure goes to the (L) on the oil pressure gauge. There is no change in the sound with the oil pressure higher or when engine is colder when the pressure is higher. Also i removed the valve covers and there was oil all over the rocker arms as well. I know i should check with a mech gauge just have not had the chance. The oil pressure comes right up when you hit the gas as well IP: Logged
SteveLaRiviere Administrator Posts: 43394 From: Saco, Maine Registered: May 99	posted 10-06-2002 09:30 PM The positive nut stops of the 351W are most likely not giving you the full lifter preload you need. They weren't designed to be very precise. ------------------ '70 Mustang Mach 1 - '72 Mustang Sprint - '94 F-150 IP: Logged
ewokeric Gearhead Posts: 216 From: woodbridge, va united states Registered: Mar 2002	posted 10-06-2002 09:38 PM So what does that mean exactly that i might get some nosie from them. I guess when i build my motor this winter/spring i should not use them to get the most out of the motor. Is there anyway to check the valve train without removing the head and checking them that way quote: Originally posted by SteveLaRiviere: The positive nut stops of the 351W are most likely not giving you the full lifter preload you need. They weren't designed to be very precise. IP: Logged
SteveLaRiviere Administrator Posts: 43394 From: Saco, Maine Registered: May 99	posted 10-07-2002 09:08 AM Sure, you could use a pushrod length checker and fit longer pushrods to get the preload you need. ------------------ '70 Mustang Mach 1 - '72 Mustang Sprint - '94 F-150 IP: Logged

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