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replacing small block oil pump #1581298 02/19/14 04:46 PM 02/19/14 04:46 PM
Joined: Feb 2010 Posts: 82 Oly Wash racerlall OP member
racerlall OP member Joined: Feb 2010 Posts: 82 Oly Wash	can a small block oil pump be replaced in a 65 b body without pulling the engine thanks E.

Re: replacing small block oil pump [Re: racerlall] #1581299 02/19/14 04:52 PM 02/19/14 04:52 PM
Joined: Aug 2003 Posts: 43,190 Bend,OR USA C Cab_Burge I Win
Cab_Burge I Win C Joined: Aug 2003 Posts: 43,190 Bend,OR USA	Probally, when you say Small Block I assume your saying the LA type engines, not the original Poly headed 318 Is this a OEM 273 C.I. motor? If so you should be able to change it easily Mr.Cab Racing and winning with Mopars since 1964. (Old F--t, Huh)

Re: replacing small block oil pump [Re: Cab_Burge] #1581300 02/19/14 05:00 PM 02/19/14 05:00 PM
Joined: Feb 2010 Posts: 82 Oly Wash racerlall OP member
racerlall OP member Joined: Feb 2010 Posts: 82 Oly Wash	its a poly but the bottom end shod be the sane right

Re: replacing small block oil pump [Re: racerlall] #1581301 02/19/14 05:43 PM 02/19/14 05:43 PM
Joined: Jan 2003 Posts: 2,931 P Paul_Fancsali master
Paul_Fancsali master P Joined: Jan 2003 Posts: 2,931	Just be sure to prime the pump with oil before buttoning up

Re: replacing small block oil pump [Re: racerlall] #1581302 02/19/14 05:59 PM 02/19/14 05:59 PM
Joined: Mar 2003 Posts: 4,848 Memphis HemiRick master
HemiRick master Joined: Mar 2003 Posts: 4,848 Memphis	Yes getting the oil pan off can be a pain but once thats done its easy. Lifting the engine an inch or 2 off the mounts also helps. Take care, Rick 68 Coronet R/T 440 & 68 Charger 528 Hemi,and 5 Challengers! 6 cyl, 318, 360, 383, 451

Re: replacing small block oil pump [Re: racerlall] #1581303 02/19/14 06:23 PM 02/19/14 06:23 PM
Joined: Nov 2003 Posts: 36,040 Lincoln Nebraska R RapidRobert Circle Track
RapidRobert Circle Track R Joined: Nov 2003 Posts: 36,040 Lincoln Nebraska	As said undo what needs to be undone so you can raise it several inches. May I ask what psi readings you are dealing with? If it's an extremely worn eng I would go with a hi vol pump if the std vol pump/hi psi spring cannot maintain adequate flow (psi) live every 24 hour block of time like it's your last day on earth

Re: replacing small block oil pump [Re: RapidRobert] #1581304 02/19/14 06:41 PM 02/19/14 06:41 PM
Joined: Jan 2003 Posts: 32,932 Grand Prairie,Texas stumpy I Win
stumpy I Win Joined: Jan 2003 Posts: 32,932 Grand Prairie,Texas	If the oil pressure is really low just install a new set of rod and main bearings while the pan is off. Not that hard to do.

Re: replacing small block oil pump [Re: stumpy] #1581305 02/20/14 05:42 AM 02/20/14 05:42 AM
Joined: Feb 2010 Posts: 82 Oly Wash racerlall OP member
racerlall OP member Joined: Feb 2010 Posts: 82 Oly Wash	its a high mileage car oil presser is low but not zeroed out yet iv got a new mystery pump on the shelf it looks like a OEM or melling casting I think its likley a stock replacement

Re: replacing small block oil pump [Re: racerlall] #1581306 02/20/14 09:42 AM 02/20/14 09:42 AM
Joined: Jan 2003 Posts: 3,920 n.e. pa. 6 65rbdodge master
65rbdodge master 6 Joined: Jan 2003 Posts: 3,920 n.e. pa.	it can be done with a 318 poly. I did it when my coronet still had the poly in it.

Re: replacing small block oil pump [Re: 65rbdodge] #1581307 02/20/14 11:56 AM 02/20/14 11:56 AM
Joined: Aug 2006 Posts: 8,064 Iowa 76dodgeboy master
76dodgeboy master Joined: Aug 2006 Posts: 8,064 Iowa	Do Not just install new bearings in the bottom end until you've Plastigauged them to know What size is needed. Throwing standard in when you need the next size defeats the purpose.

Re: replacing small block oil pump [Re: racerlall] #1581308 02/20/14 01:36 PM 02/20/14 01:36 PM
Joined: Nov 2003 Posts: 36,040 Lincoln Nebraska R RapidRobert Circle Track
RapidRobert Circle Track R Joined: Nov 2003 Posts: 36,040 Lincoln Nebraska	Quote: its a high mileage car oil presser is low I'd slap in a hi vol sealed power or melling pump. Extremely likely the bearings are OE std. wouldn't hurt to replace em with some std's if you felt comfortable tackling that job. the rod bearings would be a piece of cake, the mains are more involved changing them & as you know as soon as the (rod) cap comes off slip some tubing on the bolts to cover the threads live every 24 hour block of time like it's your last day on earth

Re: replacing small block oil pump [Re: 76dodgeboy] #1581309 02/20/14 01:36 PM 02/20/14 01:36 PM
Joined: Sep 2007 Posts: 14,889 up yours Supercuda About to go away
Supercuda About to go away Joined: Sep 2007 Posts: 14,889 up yours	If it's a standard crank that has worn to the point where standard bearing don't work he needs machine work before he can run undersized bearings 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.

Re: replacing small block oil pump [Re: Supercuda] #1581310 02/20/14 01:42 PM 02/20/14 01:42 PM
Joined: Jan 2003 Posts: 32,932 Grand Prairie,Texas stumpy I Win
stumpy I Win Joined: Jan 2003 Posts: 32,932 Grand Prairie,Texas	If the oil pressure is just low I doubt very seriously that the crank is worn enough to need over sized bearings. Remember the bearings are meant to wear long before the crank is.

Re: replacing small block oil pump [Re: racerlall] #1581311 02/20/14 02:03 PM 02/20/14 02:03 PM
Joined: Feb 2004 Posts: 4,501 Gainesville,FL G goldmember master
goldmember master G Joined: Feb 2004 Posts: 4,501 Gainesville,FL	If (with a real gauge) has 5psi or better @ hot idle and the pressure rises with RPM I'd leave it alone.

Re: replacing small block oil pump [Re: goldmember] #1581312 02/20/14 02:11 PM 02/20/14 02:11 PM
Joined: Nov 2003 Posts: 36,040 Lincoln Nebraska R RapidRobert Circle Track
RapidRobert Circle Track R Joined: Nov 2003 Posts: 36,040 Lincoln Nebraska	Quote: If (with a real gauge) has 5psi or better @ hot idle and the pressure rises with RPM I'd leave it alone. Excellent point, especially for a DD that ain't being hotrodded & from what I gather I'm assuming that ain't the case here. That'd involve alot of work for (maybe) not much gain & the gain might not be critical in this app live every 24 hour block of time like it's your last day on earth

Re: replacing small block oil pump [Re: racerlall] #1581313 02/20/14 03:20 PM 02/20/14 03:20 PM
Joined: Aug 2003 Posts: 43,190 Bend,OR USA C Cab_Burge I Win
Cab_Burge I Win C Joined: Aug 2003 Posts: 43,190 Bend,OR USA	Quote: its a high mileage car oil presser is low but not zeroed out yet iv got a new mystery pump on the shelf it looks like a OEM or melling casting I think its likley a stock replacement Are you using a good mechanical oil pressure gaue? If so how low does it drop to idling in gear hot? how much does it have when cold idling? Last thing is how much pressure does it have when you are driving it down the road with hot oil? If it has 10 lbs per 1000 RPM when hot going down the road run it until you want to find out what is causing the problem If less than 10 lbs per 1000 RPM fix it ASAP Mr.Cab Racing and winning with Mopars since 1964. (Old F--t, Huh)

Re: replacing small block oil pump [Re: 76dodgeboy] #1581314 02/20/14 04:43 PM 02/20/14 04:43 PM
Joined: Jul 2012 Posts: 1,603 Central Ohio B BMChrysler68 Smarter than the average bear? I think not.
BMChrysler68 Smarter than the average bear? I think not. B Joined: Jul 2012 Posts: 1,603 Central Ohio	Quote: Do Not just install new bearings in the bottom end until you've Plastigauged them to know What size is needed. Throwing standard in when you need the next size defeats the purpose. It wouldn't be a total waste of time, would it? Replacing the worn bearing material would still be an improvement I would think. I mean, at that point, it's really just a band-aid before a proper rebuild anyway. 1968 Plymouth Fury III 2dr FT, 383-4v, 4 speed 1972 AMC Ambassador SST wagon 360-4v, automatic 2014 Challenger R/T Classic 6-speed

Re: replacing small block oil pump [Re: stumpy] #1581315 02/20/14 07:16 PM 02/20/14 07:16 PM
Joined: Sep 2007 Posts: 14,889 up yours Supercuda About to go away
Supercuda About to go away Joined: Sep 2007 Posts: 14,889 up yours	Quote: If the oil pressure is just low I doubt very seriously that the crank is worn enough to need over sized bearings. Remember the bearings are meant to wear long before the crank is. Did you read the post I responded to? 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.

Re: replacing small block oil pump [Re: Supercuda] #1581316 02/20/14 07:26 PM 02/20/14 07:26 PM
Joined: Jan 2003 Posts: 32,932 Grand Prairie,Texas stumpy I Win
stumpy I Win Joined: Jan 2003 Posts: 32,932 Grand Prairie,Texas	Yes, and your point is?

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