old motor question

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Dec 16, 2006 | 08:51 PM

fordboy_52

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From: Abilene Kansas

old motor question

i have a 351 m that has been siting for god knows how long. i have it installed and am ready to try to start it yet im worried. one cyl showed 100 pounds and the rest showed 50-40 and one 25. will this come up as the truck runs (mabey runs)?

this is if the dang thing starts... im really worried now

Matt

Dec 16, 2006 | 10:37 PM

Torque1st

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When they sit for a long time all kinds of things happen. Valves, rings, and cylinders rust. Pistons corrode and seals dry up. It may or may not run properly. PB blaster or ATF down the cylinders may help to loosen things up but only time will tell.

Dec 17, 2006 | 08:09 AM

stretch351c

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From: Stanton,Ne

It might be wise to invest in a top end gasket kit( intake,heads,and valve covers) first and open up the top of the motor and check the condition of the cylinders. Otherwise like Torque said it might come around or not. It's a toss up when a motor sits for any real length of time. Good Luck

Dec 17, 2006 | 11:13 AM

fordboy_52

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From: Abilene Kansas

i put a new intake on and valve covers while i was in there. i also primed the oil system and i had oil shooting all over the place

Matt

Dec 17, 2006 | 12:01 PM

dkstuck

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Like Torque1st said,,take plugs out PB blaster or ATF, let her soak, turn engine over to clean solvent out, reinstall plugs and fire her up. you may want to run it awhile before shutting off. Take a short trip, compression check, if engine looks like its coming around, change oil and drve it. Couple full throttles may help seat all back after a good warm up. Good Luck

Dec 17, 2006 | 08:56 PM

husker

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From: Manhattan, KS

Hey Matt, it is good to hear that you got the engine installed. Good luck on getting it running and doing ok.

Dec 17, 2006 | 09:01 PM

fordboy_52

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From: Abilene Kansas

she runs, its not the best but its a hell of alot better than the old motor. compression came way up after we got it nice and warm

Matt

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Dec 17, 2006 | 09:31 PM

husker

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From: Manhattan, KS

Sound good Matt. Did you do the usual stuff after you got it running. Change the plugs, wires, clean or rebuild the carb. etc. That might help it too since it sat for a long time.

Dec 17, 2006 | 09:39 PM

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fordboy_52

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From: Abilene Kansas

i put new wires in before we started it. same with wires. its going to get the oil changed this week and the carb is fine for some strange reason/

Matt