priming my engine before start up?
#463342
09/08/09 08:47 PM
09/08/09 08:47 PM
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Joined: Apr 2009
Posts: 79 montreal, quebec, canada
jimmy71demon
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OP
member
Joined: Apr 2009
Posts: 79
montreal, quebec, canada
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is there a difference betweeen priming ur engine with a drill, and jus turning it over with no fire or fuel pump? what is the proper way to prime an engine before start up? thanks in advance jimmy
Im goin fast Mom!
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Re: priming my engine before start up?
[Re: jimmy71demon]
#463345
09/08/09 10:46 PM
09/08/09 10:46 PM
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Joined: Nov 2003
Posts: 36,041 Lincoln Nebraska
RapidRobert
Circle Track
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Circle Track
Joined: Nov 2003
Posts: 36,041
Lincoln Nebraska
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Quote:
what is the proper way to prime an engine before start up?
Take out dist/intermediate shaft, Home Depot has a 5/16" paint stirrer shaft for cheap. Take out/off the plugs/valve covers & have someone turn the crank slowly w a breaker bar & 1&1/4 socket while you man the drill up top until both rocker arm assy's get their oil. Then I take off the rocker arm assy's & (re)goop up the lobes/lifter bottoms then bolt the rocker arm assys back on to make sure I have PLENTY for startup and that too much didn't get wiped off in the crank turning ordeal. A bit excessive maybe but after thousands in time/money into it getting a bit anal at the very end doesn't bother me especially when it's SO close to fireup time. EDIT On your bench grinder trim/smooth several inches of the rod & wrap it w black electrical tape where it goes thru the bronze bushing to protect it.
Last edited by RapidRobert; 09/09/09 01:25 AM.
live every 24 hour block of time like it's your last day on earth
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Re: priming my engine before start up?
[Re: RapidRobert]
#463346
09/09/09 01:20 AM
09/09/09 01:20 AM
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Joined: Sep 2005
Posts: 6,516 Santa Cruz, California
Lefty
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master
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Santa Cruz, California
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Get one of these at Summit Racing for $7.88 http://www.summitracing.com/parts/DCC-4286800/?image=largeMark where the rotor is pointing so you can put it back in the same location. Pull the dist and drive under it. Insert the tool hooked to a drill that runs in the direction the dist usually turns. Run the drill in the correct direction while cranking the engine with the starter. When you see oil from the rockers you're done. I don't pull the valve covers, just look through the oil fill hole.
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Re: priming my engine before start up?
[Re: Lefty]
#463347
09/09/09 02:22 AM
09/09/09 02:22 AM
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Joined: Jan 2003
Posts: 5,791 Hamilton, Ontario Canada
Magnum
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master
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Hamilton, Ontario Canada
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I prefer drill prime too.
The reason you stay away from the starter is it may take hundreds of revolutions of the engine to build oil pressure with the starter. In the meantime your bearings recieved no oil. Nothing up to the rockers yet either, which also means no drainback. So the camshaft lobes are dry too.
Now even with the perfect prime. The cylinder walls are not all lubed and the connecting rod small end (wrist pins)are still not lubed. This is why after priming, it is essential to get the engine to fire up on the first hit.
Have the distributor pointed correctly and the carburetor bowls filled.
69 Super Bee, 93 Mustang LX, 04 Allure Super
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Re: priming my engine before start up?
[Re: Magnum]
#463348
09/09/09 02:38 PM
09/09/09 02:38 PM
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Joined: Apr 2009
Posts: 79 montreal, quebec, canada
jimmy71demon
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montreal, quebec, canada
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thanks guys! u see my buddy and i both did rebuilds this summer for the first time. him a pretty much stock rebuild on a 318, and me a 416 stroker. thats y i have been asking a lot of "newbie" questions cause we both want to be sure of what we are doing. neither one of us really had the money to do it in the first place, so we definatly cant afford to start all over again! but i (we) really appreciate all the input and information from u guys. when ever we get snagged or stumped this is the first place i come to get answers! party on Wayne!
Im goin fast Mom!
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Re: priming my engine before start up?
[Re: jimmy71demon]
#463349
09/09/09 06:22 PM
09/09/09 06:22 PM
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Joined: Nov 2006
Posts: 1,086 Baton Rouge, La.
StandOnIt
super stock
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super stock
Joined: Nov 2006
Posts: 1,086
Baton Rouge, La.
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On new engines, I drill prime mine while its stil on the stand with the intake and valve covers off. I can see whats going on and make sure oil is getting everywhere it needs to. After the engine is in and she is ready to go, I prime her again for a min or so, button her up and lite the fires. The only time I touch the starter is to lite her up. Dont want to spin it over on "dry" bearings. Also, when you do it on the stand, you can check your pan and lower seals for any type of leakage. Good luck with the new engines and enjoy them.
76' Volare, 5.9 magnum w/Iron heads. New best 10.68 at 123 mph 1/4 mile.
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Re: priming my engine before start up?
[Re: Lefty]
#463352
09/09/09 11:40 PM
09/09/09 11:40 PM
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Joined: Jul 2008
Posts: 30,451 Florida STAYcation
dOoC
The village idiot's idiot
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The village idiot's idiot
Joined: Jul 2008
Posts: 30,451
Florida STAYcation
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Quote:
Get one of these at Summit Racing for $7.88
http://www.summitracing.com/parts/DCC-4286800/?image=large
That Summit/MP piece .... NOTHING more than a simple 5/16 hex steel stock ... but something a BUNCH best-er .. a steel or even an aluminum rod with a plastic PVC coating on-it to protect the bushing.
Electrical or duct-tape aint gonna cut-it !!
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Re: priming my engine before start up?
[Re: buildanother]
#463353
09/10/09 12:13 AM
09/10/09 12:13 AM
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Joined: Feb 2003
Posts: 21,318 Manitoba, Canada
DaytonaTurbo
Too Many Posts
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Too Many Posts
Joined: Feb 2003
Posts: 21,318
Manitoba, Canada
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Quote:
But Jimmy's doing a small block, man! clockwise
Sorry, my bad, clockwise on the small blocks, counter clockwise on the big blocks.
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Re: priming my engine before start up?
[Re: DaytonaTurbo]
#463354
09/10/09 12:39 AM
09/10/09 12:39 AM
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Joined: Jun 2004
Posts: 893 Tustin, CA
pishta
super stock
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super stock
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Tustin, CA
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we primed a big block with one of those differential lube pumps, stuck the plastic tube with no tip in the threaded oil filter boss (fit pretty good) and pumped..and pumped. We actualy got a reading on our oil pressure guage and oil up top in the rockers. Spun a full filter on and kicked her over. Ghetto, but I think it worked...It was sunday night and no place was open to buy the 5/16 hex shaft.
12 Grand Caravan 06 T&C 02 T&C 96 Breeze 65 Barracuda "S"
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Re: priming my engine before start up?
[Re: pishta]
#463355
09/24/09 09:10 PM
09/24/09 09:10 PM
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Joined: Jan 2003
Posts: 14,610 Not2farfromNashville, TN
Rug_Trucker
I Live Here
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I Live Here
Joined: Jan 2003
Posts: 14,610
Not2farfromNashville, TN
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Last time I fired a new engine I primed it on the stand. Saw 2 black flakes come out of the head. I was able to grab them!
Too bad a slant can't be primed like a V-8. I guess you just pack the pump with Vasoline.
"The only thing to do for triumph of evil is for good men to do nothing"
"NUNQUAM NON PARATUS!"
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