HV Oil pump - Stock Dist/Pump Drive?

[GoodysGotaCuda]

Alright riddle me this.

If a HV Oil pump was ran with a stock/factory 120,000mile distributor/oil pump drive. Is it common, that the drive 'could' twist off/tweak/cause a lower pressure problem as it gets used and abused?

Thanks

[Killer_Mopar]

I am not sure but I can tell you this. I never thought that the hardened pump drives were worth it until I bought a 440 that had the oil pump drive break (twist off) and caused it to seize up due to no oil flow. I say that if your worried about it then replace it just in case, they arent that expensive and its cheap insurance...if you dont change it and it does brake you will be kicking yourself in the head.

[GoodysGotaCuda]

True, good point. Just looking into why my oil psi isn't quite what it used to be. Still runs like a little monster. I'm concerned however. 

[Killer_Mopar]

I know you rebuilt the engine a while back but is there any way you could have something in the oil pan that is clogging the pick-up or filter? If the problem just popped up out of nowhere I would change the oil and filter and see if that helps. It also might be the spring inside the oil pump, it could have broke or just lost some of its tension.....

[GoodysGotaCuda]

Well its sort of a lower than normal pressure on it. its low at idle and gets a max of about 45. I rev to about 6k. Just trying to thing of what else it could be before pulling the pan. Because pulling it i can do....getting it to seal from under the car...i have my doubts. 

I've ran 15w-40 since day one.

[Chryco Psycho]

Using a HV pump with a stock pan can suck the pan dry & starve the brgs so they could be damaged , or possibly the bypass caught some debris & is jammed partially open , you should easily be able to swap the pan & reseal it

[tactransman]

The heavy duty oil pump drive is alot better looking piece than the stock one, it's worth every penny. Try some 20w50 and see what your PSI goes to. When I ran a HV pump in my Challenger before I made a deep pan, I ran it 3/4 of a quart over full to give it a little more in the pan but it still worried me.

[GoodysGotaCuda]

My oil psi never fluctuated at highway cruise or under heavy throttle through the gears. I've watched the gauge, i also have a autometer idiot light, if it were to catch air or something, it'd light. 

guess ill try some thicker oil.  any recommendations? I've always ran 15w-40 shell rotella (diesel, zinc). What 20w-50 is recommended for our flat tappets? Thanx

[MEK-Dangerfield]

My oil psi never fluctuated at highway cruise or under heavy throttle through the gears. I've watched the gauge, i also have a autometer idiot light, if it were to catch air or something, it'd light. 

guess ill try some thicker oil.  any recommendations? I've always ran 15w-40 shell rotella (diesel, zinc). What 20w-50 is recommended for our flat tappets? Thanx

Mike,

  I don't believe the problem is your oil weight. I just put some of that Shell Rotella in my car yesterday. That stuff is PLENTY heavy enough.


  Mike

[IMNCARN82]

 

Using a HV pump with a stock pan can suck the pan dry & starve the brgs so they could be damaged , or possibly the bypass caught some debris & is jammed partially open , you should easily be able to swap the pan & reseal it

It would be worth the peace of mind to pull the pan! 

[Chryco Psycho]

I do not recommend 20-50w  , you may twist the drive off with oil that thick , you could try 5-50 Syntec or Mobil 1 

[Dave-R]

Chrysler themselves always stated you should run a single grade 40w or 20w-50w in a high performance 440 for street/strip. Only use a lighter oil if you have trouble turning the engine over in extreme cold weather (whatever happened to cold weather?)

I have used a HV oil pump in my 440 for many, many years and never had a problem with it sucking the pan dry. It is a 1970 HP2 440 pan same as a 440+6 (and hemi?) so I think it will hold a bit more oil (one quart?) than the lower performance 440 pans. Might be worth getting one. Plus crank scraper of course. Always use a crank scraper/windage tray whatever you Americans call them.

Also always use the hardened pump drive no matter what.

[moper]

Gooduy, did it ever make more than 45psi? You know you shouldnt be revving it if it didnt make 60+ before.

[GoodysGotaCuda]

Gooduy, did it ever make more than 45psi? You know you shouldnt be revving it if it didnt make 60+ before.

used to pull like 65 at cruise/top end.  wish i knew it all first-time 'round, i do know now.  . probably just run it 'till it croaks or gets worse, still runs just as hard as it did from day one. it's got one 13second pass left in it. 

[moper]

Well, if it has dropped 20psi, I'd say it's not the drive. You have a clearance problem that is getting worse. My advice...it was all budget. Run it until it dies...I think you will seize it and lose the crank/rods before it flies apart and breaks something.