Re: rebuilt motor sat for 8 years, safe to run it now?
[Re: Rapid340]
#1220388
04/22/12 10:29 AM
04/22/12 10:29 AM
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Joined: Oct 2003
Posts: 21,345 Marysville, O-H-I-O
70Cuda383
Too Many Posts
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Too Many Posts
Joined: Oct 2003
Posts: 21,345
Marysville, O-H-I-O
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my ONLY concern would be valve springs, but being compressed is not what weakens springs, it's the cycling of the spring up and down that weakens the metal over time, so you SHOULD be ok. if they're low tension springs on a stock cam, I wouldn't worry about it too much.
surface rust in the cylinder bores may be present, but the rings will knock it off as they break in and seat, so again, I wouldn't worry too much about that.
**Photobucket sucks**
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Re: rebuilt motor sat for 8 years, safe to run it now?
[Re: Rapid340]
#1220389
04/22/12 10:44 AM
04/22/12 10:44 AM
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Joined: Apr 2010
Posts: 4,154 bethlehem pa
mikemee1331
master
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master
Joined: Apr 2010
Posts: 4,154
bethlehem pa
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Quote:
Since it is on a stand without and coolant in it I doubt flushing it out would benefit much.
dude, ya need to flush out the dead spiders!
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Re: rebuilt motor sat for 8 years, safe to run it now?
[Re: ahy]
#1220392
04/22/12 03:57 PM
04/22/12 03:57 PM
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Joined: Jan 2003
Posts: 6,816 Alton, IL
Dakota_Don
master
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master
Joined: Jan 2003
Posts: 6,816
Alton, IL
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Quote:
A lot of times folks in your situation just fire it up and it works. A little prep increases the chance of sucess though. I would
- pull plugs and put a little oil in each hole. If its still on the stand, roll it to distribute the oil around the piston tops. - Fill with oil (high zinc, diesel engine oil would be good). - Pull distributor and prime the oil system with a drill and rod - Roll it over by hand while running the drill pump - If it turns over OK, assemble and fire it up. - Normal break in for a flat tappet cam calls for running around 2000 RPM for 20 minutes.
Added insurance would be to pull the manifold and inspect the cam for rust. If it was coated with assembly lube and stored in a dry place, it should be fine. If you aren't sure, worth having a look. If you do pull the manifold, have some cam break in lube handy and give it a good coat before firing.
this is what i would do
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