Re: reuse or new oil pump drive distributor gear?
[Re: mopars4ever]
#1828026
05/16/15 08:45 PM
05/16/15 08:45 PM
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Joined: Jun 2013
Posts: 1,521 Tacoma, Washington USA
Adam71Charger
OP
pro stock
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OP
pro stock
Joined: Jun 2013
Posts: 1,521
Tacoma, Washington USA
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stock pump or HV. also is the bushing new? to answer your question, big block drive gears should be the same but i would use a new one. I have not picked out a pump yet. I did upgrade the oil pickup tube to the 1/2" hemi, and the pan is 7qt. The bushing is brand new.
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Re: reuse or new oil pump drive distributor gear?
[Re: Adam71Charger]
#1828134
05/16/15 11:30 PM
05/16/15 11:30 PM
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Joined: Sep 2007
Posts: 14,889 up yours
Supercuda
About to go away
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About to go away
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Posts: 14,889
up yours
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It's not optimal, note the sharp transition between the hex and the shaft, a potential stress riser right there. Find one like this instead http://www.summitracing.com/parts/dcc-3571071/overview/
Last edited by Supercuda; 05/16/15 11:31 PM.
They say there are no such thing as a stupid question. They say there is always the exception that proves the rule. Don't be the exception.
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Re: reuse or new oil pump drive distributor gear?
[Re: Adam71Charger]
#1828155
05/16/15 11:59 PM
05/16/15 11:59 PM
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Joined: Sep 2007
Posts: 14,889 up yours
Supercuda
About to go away
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About to go away
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up yours
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The slot is there, as for what "meant for an HV pump" means, who knows. The link I posted has a hardened tip and the gear is pinned to the shaft, doesn't get better than that. Only time I ever broke the tip off the intermediate shaft was on one that looked like your link and guess where is broke? Right at that transition. In my case a bit of casting flash got into the pump and locked it up. Not sure any shaft would of handled that. Mind you this was in a 79 360 in the mid 90's, so it can happen when you least expect it. A better pic http://www.moparonlineperformance.com/product-p/p3571071_gen2.htm
Last edited by Supercuda; 05/17/15 12:02 AM.
They say there are no such thing as a stupid question. They say there is always the exception that proves the rule. Don't be the exception.
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Re: reuse or new oil pump drive distributor gear?
[Re: Adam71Charger]
#1828157
05/17/15 12:01 AM
05/17/15 12:01 AM
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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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Yes start with the std pump & see if it will provide enough vol (which you will see as the PSI). I think you'll be fine unless you did alot of block oiling mods/loose clearances
live every 24 hour block of time like it's your last day on earth
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Re: reuse or new oil pump drive distributor gear?
[Re: mopars4ever]
#1828249
05/17/15 03:09 AM
05/17/15 03:09 AM
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Joined: Jan 2003
Posts: 1,069 Washington State
70Duster440
super stock
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super stock
Joined: Jan 2003
Posts: 1,069
Washington State
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The mopar ones need to sized with a special tool when they are installed. I have heard that some people use the aftermarket bushing without sizing it. The last two aftermarket bushings I've bought (440 Source) and installed did not require any burnishing - the shaft slid right in.
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Re: reuse or new oil pump drive distributor gear?
[Re: Adam71Charger]
#1828262
05/17/15 03:50 AM
05/17/15 03:50 AM
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Joined: Aug 2003
Posts: 43,218 Bend,OR USA
Cab_Burge
I Win
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I Win
Joined: Aug 2003
Posts: 43,218
Bend,OR USA
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Last edited by Cab_Burge; 05/17/15 03:52 AM.
Mr.Cab Racing and winning with Mopars since 1964. (Old F--t, Huh)
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Re: reuse or new oil pump drive distributor gear?
[Re: Adam71Charger]
#1828279
05/17/15 05:17 AM
05/17/15 05:17 AM
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Joined: Jan 2003
Posts: 1,255 Columbus, GA
Michael Ecks
pro stock
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pro stock
Joined: Jan 2003
Posts: 1,255
Columbus, GA
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I also dont see a slot for the distributor tip in that one The one you posted is fine, the one someone else posted is for a small block. If you choose a stock pump you can run whatever you like. An old stock one or the new one from melling you posted. If you run a high volume pump an intermediate shaft with radiused transition to the hex is good insurance. In this link you can see the difference. Hughes intermediate shaft
"The happiness of your life depends upon the quality of your thoughts" ~ Roman Emperor Marcus Aurelius
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Re: reuse or new oil pump drive distributor gear?
[Re: Adam71Charger]
#1831000
05/20/15 07:01 PM
05/20/15 07:01 PM
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Joined: Jun 2013
Posts: 1,521 Tacoma, Washington USA
Adam71Charger
OP
pro stock
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OP
pro stock
Joined: Jun 2013
Posts: 1,521
Tacoma, Washington USA
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Ok I have a compression tester so I should be able to screw it in to #1, take the gauge part off, and turn the engine until the piston stops blowing air out of the cylinder on the compression stroke. Any reason this wont work? I dont have a piston stop, and want to get this done today
EDIT: Or a 14mm bolt
Last edited by Adam71Charger; 05/20/15 07:09 PM.
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Re: reuse or new oil pump drive distributor gear?
[Re: Adam71Charger]
#1831003
05/20/15 07:07 PM
05/20/15 07:07 PM
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Joined: Jul 2006
Posts: 4,179 California
mickm
master
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master
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Posts: 4,179
California
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you can trust the timing cover enough to get things going. by looking at the lobes you can tell roughly when cylinder 1 is at TDC. then go ahead and position the crank where cylinder 1 should be firing: 15 degrees BTDC or whatever. that is close enough. time the engine correctly after it is running.
by the manual, the slot should run parallel with the camshaft, but it doesn't matter. all that matters is that when the distributor is in place, it will be firing for cylinder #1. you can set the slot parallel, then drop your distributor in, and then set the plug wire sequence based off of the tower that the rotor is now pointing at.
although i've seen in the manual where it says that the slot should be parallel to the camshaft, i've never seen where it says which tower should be cylinder 1. it does depend on the distributor, and the position of the shaft to the rotor position, which i have found to be different on different distributors.
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Re: reuse or new oil pump drive distributor gear?
[Re: Adam71Charger]
#1831005
05/20/15 07:10 PM
05/20/15 07:10 PM
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Joined: Jul 2006
Posts: 4,179 California
mickm
master
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master
Joined: Jul 2006
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California
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Ok I have a compression tester so I should be able to screw it in to #1, take the gauge part off, and turn the engine until the piston stops blowing air out of the cylinder on the compression stroke. Any reason this wont work? I dont have a piston stop, and want to get this done today yes, this will work, but you don't need to be super accurate on this. once you know you are at TDC for the compression stroke, you are done. line things up with the balancer and tab on the timing cover and you are good to go. time it properly after it is running. what you need to be accurate on is a) that the tower the rotor is contacting is cylinder #1, and b) that the plug wires after that are in the correct sequence.
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Re: reuse or new oil pump drive distributor gear?
[Re: mickm]
#1831009
05/20/15 07:13 PM
05/20/15 07:13 PM
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Joined: Jul 2006
Posts: 4,179 California
mickm
master
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master
Joined: Jul 2006
Posts: 4,179
California
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when i take the distributor drive gear out i:
1) make a note of the position of the slot on the gear, (usually take a picture). 2) with a sharpie, mark the distributor and the block so i can drop it back in and the timing will be close. 3) make note of which tower is cylinder #1, so i know that if i'm messing with plug wires, i get it right, and can make sure the rotor is in the right position, and also so i don't drop the distributor in 180 degrees off.
Last edited by mickm; 05/21/15 03:51 PM.
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Re: reuse or new oil pump drive distributor gear?
[Re: Adam71Charger]
#1832085
05/22/15 12:19 PM
05/22/15 12:19 PM
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Joined: Jun 2006
Posts: 5,163 CT
GTX MATT
master
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master
Joined: Jun 2006
Posts: 5,163
CT
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I would run an HV pump with those clearances.
Now I need to pin those needles, got to feel that heat Hear my motor screamin while I'm tearin up the street
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Re: reuse or new oil pump drive distributor gear?
[Re: Adam71Charger]
#1832510
05/22/15 10:39 PM
05/22/15 10:39 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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Im gonna stick with the standard pump for now. How do you know you need a high volume pump? Is it solely on oil pressure? Yes, post what you get for cold and hot idle numbers & at higher RPM's.
live every 24 hour block of time like it's your last day on earth
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