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Rebuild sat for 3 years

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Old 03-21-2018, 11:08 AM
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LeMans Pete
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St. Jude Donor '13-'14

Default Rebuild sat for 3 years

Guys,

It's been a while. Life (good) got in the way, kiddos and other interests. About 3 years ago I rebuilt the motor and dropped it in the car when the aforementioned excuses kicked in. It's time to get rolling again.

So, the rebuild was completed nearly 3 years ago, and I'm concerned that it has sat for all this time. Bored 0.030 over to a 355ci, new pistons/rings, heads reworked, new valves & springs, new rocker arms & pushrods, new cam.

Any concerns that this has sat for 3 years? Any precautions or steps I should do to ensure this will fire ok?

Also the carburetor: about 6 months before the motor was rebuilt I had Lars rebuild the carburetor. It was properly drained, but I'm concerned any/all seals are possibly dried and toast at this point. Should it be rebuilt?

Old 03-21-2018, 11:18 AM
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CanadaGrant
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Nice looking engine! I think the only thing I would do is remove the distributor and use an oil pump priming tool once the engine is installed just before start up.
Old 03-21-2018, 11:20 AM
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calwldlife
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at least pull plugs and squirt oil in cyls.
turn by hand.
you didn't say if it has been run or how long.

an un run engine has more danger of rust than a seasoned one.
Old 03-21-2018, 11:46 AM
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Alan 71
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Hi Peter,
Very pleased to see your new thread.
I'd wondered what had happened when you stopped posting.
I'm glad things are good!
Regards,
Alan

Last edited by Alan 71; 03-21-2018 at 11:48 AM.
Old 03-21-2018, 11:47 AM
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cv67
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Fire it up, ck for fuel leaks
If you have old gas in there it may not wanna fire, mine wouldnt (2+yrs old)the efi DD would "just catch" and run the carbd wouldnt light off period. Cranked it some, didnt prime nothing.
Old 03-21-2018, 12:17 PM
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Pull a coil wire. Crank it till you see oil pressure. Plug the wire back in and let er rip.
Old 03-21-2018, 12:43 PM
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HeadsU.P.
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If that's a Flat Tappet you could wipe a cam lobe while waiting for oil pressure to build. A new / rebuilt engine should fire up immediately to prevent scoring damage. Use a priming tool as others have said. Then with all the plugs out, shoot some 10W oil in each cylinder, jog the starter. Then spin it as long as you have oil pressure. Plugs back in, dizzy back in, few ounces of gas down the carb, good to go.
Old 03-21-2018, 01:03 PM
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Big2Bird
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Originally Posted by HeadsU.P.
If that's a Flat Tappet you could wipe a cam lobe while waiting for oil pressure to build. A new / rebuilt engine should fire up immediately to prevent scoring damage. Use a priming tool as others have said. Then with all the plugs out, shoot some 10W oil in each cylinder, jog the starter. Then spin it as long as you have oil pressure. Plugs back in, dizzy back in, few ounces of gas down the carb, good to go.
That is what assembly lube is for. It either has assembly lube on it, or it was run in before.
Old 03-21-2018, 01:07 PM
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LeMans Pete
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Originally Posted by CanadaGrant
Nice looking engine! I think the only thing I would do is remove the distributor and use an oil pump priming tool once the engine is installed just before start up.
Hi Grant - that was my exact plan!

Originally Posted by calwldlife
at least pull plugs and squirt oil in cyls.
turn by hand.
you didn't say if it has been run or how long.

an un run engine has more danger of rust than a seasoned one.
My exact concern: this engine maybe has 5 revolutions on it total. The cylinders were oiled before I sealed it up... but that was 3 years ago.

Originally Posted by Alan 71
Hi Peter,
Very pleased to see your new thread.
I'd wondered what had happened when you stopped posting.
I'm glad things are good!
Regards,
Alan
Hi Alan! I am glad to still see you around these parts! Any chance you'll be at the Greenville Regional or National?

Originally Posted by cuisinartvette
Fire it up, ck for fuel leaks
If you have old gas in there it may not wanna fire, mine wouldnt (2+yrs old)the efi DD would "just catch" and run the carbd wouldnt light off period. Cranked it some, didnt prime nothing.
Yep old gas. I was planning to siphon the tank and refill with fresh and flush the lines.

Originally Posted by Big2Bird
Pull a coil wire. Crank it till you see oil pressure. Plug the wire back in and let er rip.
Hi B2B - Even with a new cam?

Originally Posted by HeadsU.P.
If that's a Flat Tappet you could wipe a cam lobe while waiting for oil pressure to build. A new / rebuilt engine should fire up immediately to prevent scoring damage. Use a priming tool as others have said. Then with all the plugs out, shoot some 10W oil in each cylinder, jog the starter. Then spin it as long as you have oil pressure. Plugs back in, dizzy back in, few ounces of gas down the carb, good to go.
Yeah that first start has me extremely nervous for that camshaft. Shooting oil in each cylinder is a smart call... and a miserable thought as I have all that ignition shielding on there! Any concern with that carb sitting for 3 years as well?

I certainly appreciate all the input! I have greatly missed the CF.
Old 03-21-2018, 01:08 PM
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Originally Posted by Big2Bird
That is what assembly lube is for. It either has assembly lube on it, or it was run in before.
It is CAKED in assembly lube.
Old 03-21-2018, 01:11 PM
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Originally Posted by LeMans Pete
It is CAKED in assembly lube.
If it has never run, prime it as said, start and run it up to 2000RPM for 20-30 minutes. If it gets hot, advance it a tad more.
Old 03-21-2018, 01:13 PM
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Originally Posted by Big2Bird
If it has never run, prime it as said, start and run it up to 2000RPM for 20-30 minutes. If it gets hot, advance it a tad more.
Much appreciated! So no concern with it sitting for 3 years (i.e. rust)? Any problems with just refilling the carburetor bowls and filling it with some fuel to start?
Old 03-21-2018, 01:18 PM
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Originally Posted by LeMans Pete
Much appreciated! So no concern with it sitting for 3 years (i.e. rust)? Any problems with just refilling the carburetor bowls and filling it with some fuel to start?
If the plugs were in and the carb is as Lars shipped it, no worries.
Old 03-21-2018, 01:20 PM
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Originally Posted by Big2Bird
If the plugs were in and the carb is as Lars shipped it, no worries.
Plugs are/were in. Carb was actually ran for a few months on the car, then removed and turned upside down to drain. It sits on the shop bench in the same spot for 3 years.
Old 03-21-2018, 01:26 PM
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Originally Posted by LeMans Pete
Plugs are/were in. Carb was actually ran for a few months on the car, then removed and turned upside down to drain. It sits on the shop bench in the same spot for 3 years.
I would think it would be fine. You stored it correctly.
Old 03-21-2018, 01:26 PM
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i would hand turn it with a little oil regardless of
worn in or not.
get a feel for tightness.

then crank for oil pressure to fill rear seal.

and! run it at fast rpm for 10 min if cam was already run in
and 20 if not.

you want heat in the oil to burn off water.

so, enough gas, proper radiator condition, pre
made oil pressure, fire it.
good luck
Old 03-21-2018, 04:18 PM
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LeMans Pete
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Originally Posted by calwldlife
i would hand turn it with a little oil regardless of
worn in or not.
get a feel for tightness.

then crank for oil pressure to fill rear seal.

and! run it at fast rpm for 10 min if cam was already run in
and 20 if not.

you want heat in the oil to burn off water.

so, enough gas, proper radiator condition, pre
made oil pressure, fire it.
good luck
No oil yet in the pan, will fill and prime right before start up.

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Old 03-21-2018, 07:03 PM
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Ray Schmidt
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Originally Posted by LeMans Pete
No oil yet in the pan, will fill and prime right before start up.
Interesting, I am in the same boat but my rebuilt motor has been sitting for about 10 years. I put the motor back in the car last weekend. I took the distriubuter out and spun the pump forgot about the hole for the oil pressure gauge line and made a small mess. I did spin the motor over by the crank every so often over the 10 years.
Old 03-21-2018, 07:08 PM
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Big2Bird
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Originally Posted by LeMans Pete
No oil yet in the pan, will fill and prime right before start up.
Use a good high ZDDP oil, and a can of GM EOS.
Old 03-21-2018, 08:58 PM
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LeMans Pete
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Originally Posted by Ray Schmidt
Interesting, I am in the same boat but my rebuilt motor has been sitting for about 10 years. I put the motor back in the car last weekend. I took the distriubuter out and spun the pump forgot about the hole for the oil pressure gauge line and made a small mess. I did spin the motor over by the crank every so often over the 10 years.
how are you turning the motor over with plugs in?


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