Which high volume oil pump should i use?

4C FED

4C FED

Absolutum Dominium
Re: Which high volume oil pump should i use?

It's been dicussed a lot. I think the general concensus is to run the M55A which is known as the Z28 pump.

The HV pump has been accused of pumping the pan empty.
 
spooldup

spooldup

Super Member
Re: Which high volume oil pump should i use?

Is the statement that the hv pumps have sucked the pan dry still true if you have an aftermarket deeper pan? I am having a pan made by ckeith on the board.
 
4C FED

4C FED

Absolutum Dominium
Re: Which high volume oil pump should i use?

you should be OK with a deeper, increased capacity pan.

The two pumps that you have mentioned will require a custom pickup due to the 3/4" inlet size.
 
C

CKEITH

Doghouse Member
Re: Which high volume oil pump should i use?

4C FED said:
It's been dicussed a lot. I think the general concensus is to run the M55A which is known as the Z28 pump.

The HV pump has been accused of pumping the pan empty.
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the m55a is melling's entry level pump... what 25-30 bucks.... the pumps i recommended are a step above the std 55a...and are based off of mellings old school sbc pump from back in the day when melling only built high quality shit.

as a matter of fact if you read the disclaimer that comes with the 55a it specifically states that the m series pumps are not recommended for performance use.
 
spooldup

spooldup

Super Member
Re: Which high volume oil pump should i use?

CKEITH said:
you'll be fine .... i would not have recommended you run something that i wouldn't put on my own engine.
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I was not doubting you at all chris. My problem is this. My engine builder has been doing motors for almost 40 years now and is very set in his old school ways. I called him like you asked to see which pump he wants me to run. I told him there was 10 and 25 percent over stock. He freaked out stating you don't what you are talking about and there is no 10 or 25 percent pump. I left it at that with him as he is very stubborn and i did not feel like continuing the arguement with him. After he puts the pan on and can measure for push rods i am taking the engine back from him to complete it myself. Anyway this is why i am coming back to the syty boards for the answer. What infomation do you guys need from the builder to decide what pump to run?
 
C

CKEITH

Doghouse Member
Re: Which high volume oil pump should i use?

spooldup said:
I was not doubting you at all chris. My problem is this. My engine builder has been doing motors for almost 40 years now and is very set in his old school ways. I called him like you asked to see which pump he wants me to run. I told him there was 10 and 25 percent over stock. He freaked out stating you don't what you are talking about and there is not 10 or 25 percent pump. I left it at that with him as he is very stubborn. Anyway this is why i am coming back to the syty boards for the answer.
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i didn't take it as you doubting me... please don't take anything the wrong way...just trying to be helpful.


they also affer a 15% higher flowing pump. personally i run the 25%.... if you were using the stock pan then i would say keep a stock vol pump....or maybe the 10%...

there's one thing for sure... there's no way i'd trust my 12k engine to a std m series 25.00 pump. :2cents:
 
spooldup

spooldup

Super Member
Re: Which high volume oil pump should i use?

Ok cool so we are on the same page. What information do you need specifically from the builder to be able to decide which pump is better for the job?
 
4C FED

4C FED

Absolutum Dominium
Re: Which high volume oil pump should i use?

CKEITH said:
as a matter of fact if you read the disclaimer that comes with the 55a it specifically states that the m series pumps are not recommended for performance use.
Click to expand...

As of recent that is true. They changed the casting & it is not as beefy as it used to be.
 
C

CKEITH

Doghouse Member
Re: Which high volume oil pump should i use?

spooldup said:
Ok cool so we are on the same page. What information do you need specifically from the builder to be able to decide which pump is better for the job?
Click to expand...


recommendations like this should be coming from the engine builder..

... regardless of what manufacturers specify in their manuals....a good engine builder will run diff bearing clearences,ring gaps,cyl bores..based on the specific application. ie... blower engine vs. n/a engine.

he should be recommending parts based on his known knowledge/experience.
 
4C FED

4C FED

Absolutum Dominium
Re: Which high volume oil pump should i use?

CKEITH said:
very good reading material.... :tup:


like i posted above... i would not even run the m series pump in my daily driver.... i mean for 30-40 more bucks why the hell would you take the chance. :banghead:
Click to expand...

Myclone & I had talked about this not too long ago. He always liked the M55A for our application.
Then I mentioned to him that when I recently received a new M55A & compared it to an old M55A, the casting was considerably different.

I had forgotten about this until now. Excuse me while I go remove my pump...:oops:
 
spooldup

spooldup

Super Member
Re: Which high volume oil pump should i use?

I guess i will have to print out the two different pumps and show him in black and white the percent differences between the two and then hopefully he will make a decision. I really dislike dealing with him but he is one of the best builders on long island.
 
Syclone#892

Syclone#892

Member
Re: Which high volume oil pump should i use?

Just an FYI I just started selling Canton racing products and after looking through there catalogs I noticed that they sell Melling pumps and they also sell Canton modified ones. They have a pretty decent pic of the ones they sell on there website if you want to take a look. If interested I should be able to get you one for a couple bucks off the price on the site.
www.CantonRacingproducts.com
 
ed hess

ed hess

race or get outta the way
Re: Which high volume oil pump should i use?

if you took the time to read the thread from the other bbs ... you would realize that even on this bbs the m55a pump USED to be the pump of choice by many including those on this bbs. after the casting change to the m55a it no longer is.
 
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