Slant 6 sitting for over a year after rebuild

-

Vali68

Well-Known Member
Joined
Oct 4, 2012
Messages
244
Reaction score
2
Location
California
Hello forabodiesonly!
I have a 68 Valiant we rebuilt the motor on and we were adding it back to the car, but personal matters took us away form it for more than a year now to get it hooked back up to the tranny and in the car. Since the motor has been sitting for over a year, is there any issues I may run into if the motor has little if any oil in it?
 
Unless its been sitting outside in the weather or in a humid, damp location, its OK. Drain any oil from the pan and use fresh. Pre-oil before firing.
 
She's staged in the driveway, but the motor is in the bay. Just not all the way hooked up yet. The hood is protecting it for now. We live in So Cal. So it doesn't get real cold. But it does get hot.

vivint-snapshot-2025-02-06-140920.png
 
Slant 6's splash lube the cam and lifters. I might be inclined to pull the cam and lifters to reapply break-in lubricant to those critical surfaces. If you want to pre-lube, do it with the lifters out so you're not wasting it turning over the engine excessively. Make sure you have everything set up so that it will pop off without a bunch of unnecessary cranking. Unfortunately slants are not friendly to initial start-up and cam break in...
 
I built a Jeep 4.0-to-4.6 stoker about 6 years prior to actually installing it. I used assembly lube, didn't add oil to the pan. When I installed it, I thoroughly primed the engine to build oil pressure. I have about 2k miles so far and no issues. This included a new Comp Cams camshaft & lifters. Just pre-lube it.
 
I built a Jeep 4.0-to-4.6 stoker about 6 years prior to actually installing it. I used assembly lube, didn't add oil to the pan. When I installed it, I thoroughly primed the engine to build oil pressure. I have about 2k miles so far and no issues. This included a new Comp Cams camshaft & lifters. Just pre-lube it.
A Jeep 4.0 like most "modern" engines has pressurized oil to the cam/valvetrain. The /6 doesn't.

It's like saying "I went out and put a battery on my 4.0 Jeep after it sat for 6 years, turned the key and it started right up."

Yeah, it's got an electric fuel pump and efi, etc. Not a mechanical fuel pump that's going to have to crank a while before it fills the float bowls with fuel, no choke, etc. Apples and oranges...
 
She's staged in the driveway, but the motor is in the bay.


In the San Fran Bay ?
 
You can dump some oil into the oil pump. The small hole off to the side, not the center or stand pipe if it has one. Other than that, fire that mutha up.
 
new oil
fill the filter

pump a bit from a standard pump oil can down the oil pressure light sender hole.
put the sender back in

start it

mine sits half assembled assembled installed removed etc numerous times over the last 25 years in an un heated garage in the UK for 6-8 months a year, when the sun come out and its T shirt weather the most recent ill-judged project is finished up quick and its re installed for driving

22F to 85 F variation round here and its damp/humid everyone is 2 hours away from the sea little triangular group of islands off the coast of europe :)

I jump in and start it up

T5 trans with the lid off on my bench in a lean-to shed (basically a fence with a roof and door at each end, on the side of the house, no lube been there 5 years still new with the remnants of its (potentially first and) last oil clinging to the cluster....

99.23456% sure all will be well in your situation

Dave
 
new oil
fill the filter

pump a bit from a standard pump oil can down the oil pressure light sender hole.
put the sender back in

start it

mine sits half assembled assembled installed removed etc numerous times over the last 25 years in an un heated garage in the UK for 6-8 months a year, when the sun come out and its T shirt weather the most recent ill-judged project is finished up quick and its re installed for driving

22F to 85 F variation round here and its damp/humid everyone is 2 hours away from the sea little triangular group of islands off the coast of europe :)

I jump in and start it up

T5 trans with the lid off on my bench in a lean-to shed (basically a fence with a roof and door at each end, on the side of the house, no lube been there 5 years still new with the remnants of its (potentially first and) last oil clinging to the cluster....

99.23456% sure all will be well in your situation

Dave
Caint fill the filter. It's upside down. lol
 

What I do is: Connect a line to the oil pressure port on the oil pump. Have the pan empty. I have a container that I can put 5 qts of oil into. I connect the container to the pressure port and pressurize the can. While the oil is being pumped into the engine, I turn the engine over so that the oil metering hole in the crank and cam get oil through them. This prefills everything.
 
-
Back
Top Bottom