rebuilt or not?
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Senior User
Joined: Aug 2007
Posts: 349
Likes: 1
From: Ohio
rebuilt or not?
Quote:
<TABLE cellSpacing=0 cellPadding=4 width="100%" border=0><TBODY><TR><TD class=alt2 style="BORDER-RIGHT: 1px inset; BORDER-TOP: 1px inset; BORDER-LEFT: 1px inset; BORDER-BOTTOM: 1px inset">Originally Posted by Scolesy8
i have a 1977 Ford F250 hiboy 400M, and i have been having headaches with the motor. when i first bought it, it was fine, but now, after replaceing the plugs, wires, cap, and rotor, i am still haveing some sort of problem. after doing a compression test, the motor is anywhere from(80psi -> 135psi) 6:1 -> 9:1. my problem is that im only 16, and have limited amounts of time and funds. i need to know weither to rebuild or just get a different motor. i haev been told to buy a motor by some and by others to rebuild. i just want something that wont give me alot of problems. if u could, just let me know what u think is my best option. and if u happen to know where i could get either a rebuild kit or new motor for a resonable price, please let me know! any help is appriciated. if u need to contact me in any other way, email me at Scolesy8@aim.com
thanks
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i have found another truck that supposeably has a rebuilt motor in it, but how can i tell if it is truley rebuilt, the odo. on the truck is origional and says 135,729. if u know how i can tell if this motor is rebuilt, then it would help me out alot. and if i was to get it anyways, would i be able to transfer my carb and intake, since it is also a 400 of the same year. any help is much appriciated.
thanks
<TABLE cellSpacing=0 cellPadding=4 width="100%" border=0><TBODY><TR><TD class=alt2 style="BORDER-RIGHT: 1px inset; BORDER-TOP: 1px inset; BORDER-LEFT: 1px inset; BORDER-BOTTOM: 1px inset">Originally Posted by Scolesy8
i have a 1977 Ford F250 hiboy 400M, and i have been having headaches with the motor. when i first bought it, it was fine, but now, after replaceing the plugs, wires, cap, and rotor, i am still haveing some sort of problem. after doing a compression test, the motor is anywhere from(80psi -> 135psi) 6:1 -> 9:1. my problem is that im only 16, and have limited amounts of time and funds. i need to know weither to rebuild or just get a different motor. i haev been told to buy a motor by some and by others to rebuild. i just want something that wont give me alot of problems. if u could, just let me know what u think is my best option. and if u happen to know where i could get either a rebuild kit or new motor for a resonable price, please let me know! any help is appriciated. if u need to contact me in any other way, email me at Scolesy8@aim.com
thanks
</TD></TR></TBODY></TABLE>
i have found another truck that supposeably has a rebuilt motor in it, but how can i tell if it is truley rebuilt, the odo. on the truck is origional and says 135,729. if u know how i can tell if this motor is rebuilt, then it would help me out alot. and if i was to get it anyways, would i be able to transfer my carb and intake, since it is also a 400 of the same year. any help is much appriciated.
thanks
Posting Guru
Joined: Mar 2005
Posts: 2,068
Likes: 0
From: western montana
it's hard...if the current owner had it done they should have receipts...or why the hell not? Also look for fresh paint over grease...but mainly
Do a compression and vacuum ck. If it has 140+ consistently I doubt it's a 135k motor. Look for vacuum to be steady at 17+" at idle.
all would transfer right over...then you have one to play with as time and $ allows...if you feel like playing...a ton of fun and frustration...even thats fun though.
did you ck the compression with oil in the cyl on your bad motor? what if you got junk in the cyl when changing plugs and hurt an exhaust valve or seat? ???? who knows but I'd want to take a close look at that motor too.
Do a compression and vacuum ck. If it has 140+ consistently I doubt it's a 135k motor. Look for vacuum to be steady at 17+" at idle.
all would transfer right over...then you have one to play with as time and $ allows...if you feel like playing...a ton of fun and frustration...even thats fun though.
did you ck the compression with oil in the cyl on your bad motor? what if you got junk in the cyl when changing plugs and hurt an exhaust valve or seat? ???? who knows but I'd want to take a close look at that motor too.
Senior User
Joined: Sep 2007
Posts: 265
Likes: 1
sence your engine is bad now you might as well pull it and see what sort of shape its in. If its rebuildable you might want to buy a cheap engine to stuff in there for a while and build up the old engine as time and funds allow. It would be a great learning experience
