hey guys. talking with a mechanic tonight, had me fair worried. the TT im building up in the garage, has been sitting dry for around 6 months now (as in the oil was drained). he mentioned that some internals may have rust due to no lubrication then told me i should pour oil into the engine, let it sit, then rotate the engine 180 degrees on the stand. let it sit then crank via the harmoic balancer to get the oil through. is this true? if so, im guessing its too late and the damage has been done? noob mistake by me if so.. and only option is rebuild? sorry if this comes across as stupid, just stressing alot haha. cheers!
The advice he gave you is spot on. The most likely place of concern will be the point at which the Piston Rings are making contact with the cylinder walls(two different types of metal in constant contact can produce corrosion, but it's not guaranteed to have happened if there was oil residue present). If possible squirt some oil into the cylinders, on top of the pistons, and allow it to soak down around the rings, BEFORE you attempt to rotate the crankshaft.
thanks lloyd. will be doing this tonight. i hope theres still some oil residue but i guess i wont know untill the car starts..
best way to check, would be to disassemble the engine? or should i pour oil down, let it settle, crank after a while and hope for the best lmao?
that would be a lot easier than pulling down. Pour a little oil down the spark plug holes, let it seap for a while, put some in the sump, crank over manually as advised to line the cylinders again. ...then, if you're able to, ideally connect a starter motor and connect to a battery then do a compression test. This will help answer some more questions for you.
Cranking the engine over by hand will do nothing as far as pumping any oil around the engine is concerned. Unless the engine has been sitting in the weather or a very damp place, it is very unlikely to have corrosion inside. Also no point in comp testing an engine that is stone cold and hasn't been started in a while. Remove the plugs, spray a small amount of CRC into the cylinders, wind it over with the starter for a few seconds, then fire it up.
thanks guys ! i didnt think there could be, and the engines covered and in the garage, so i doubted that it could corrode inside, but you never know! thanks benny and eric, will spray a small amount of CRC into the cylinders. happier now.
Is this more likely to be a problem with engines that have been sitting longer than 6 months? I have a rebuilt engine that has been sitting dormant for 3 years+ in the shed. Its a forged $12k build so probably worth the time to strip it right down again rather than risk damage?
You shouldn't have any problems. I had a SD 2.5 nissan engine rebuilt, it sat around for ages/years in the plastic bag I picked it up in,untill the old 2.5 finally died. Put the new engine in, started it, never had a problem with it full stop.
