Dry Sump for the Duramax.

COMP461

Diesel Pro
Apr 29, 2008
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Aledo Texas
Yes , I talked Greg in to doing diesel stuff. This was his fist cummins pan , and manifold. I he built and I took credit again duramax pan and plumbed it.
 
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Mike L.

Got Sheep?
Staff member
Vendor/Sponsor
Aug 12, 2006
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OK guys.
I have had pm's with Greg and told him what should be done. He is trying to post some helpful info. Let's give him a chance without jumping on him on every post.
Let's see where this goes.
 

Dave c

New member
Jul 7, 2013
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Nothing he posts is helpful, he is a selfish self promotion from 8 years ago. Can't you see what everyone on this forum is saying?


If he gave credit to those who have helped him, and run his car and not his mouth, he MIGHT be tolerable. None of his posts are informative. Did he pay you off?
 

Mike L.

Got Sheep?
Staff member
Vendor/Sponsor
Aug 12, 2006
15,681
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Nothing he posts is helpful, he is a selfish self promotion from 8 years ago. Can't you see what everyone on this forum is saying?


If he gave credit to those who have helped him, and run his car and not his mouth, he MIGHT be tolerable. None of his posts are informative. Did he pay you off?

GFY
You and your supposed boss are the most distrusted Christian bastards around. I said give it a chance. I will close it if need be.
If you come at me again I will ban you. Now STFU
 

THEFERMANATOR

LEGALLY INSANE
Feb 16, 2009
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Did you just hear that somewhere, oh Great Greg?
Is this another example of "learning by osmosis" just regurgitating info youre around and being just a driver...or what?

Pretty sure I read somewhere that the stock pump in the stock GM wet sump design pulls roughly 5" at idle too Greg, and matches your "@ full power" vacuum claim of 10-12" as well...there is a minimum and ideal requirement/ratio that needs to be adhered to...GM didn't mess that up and the stock pump can and does produce more volume than required, by like 125%??? Which is why we can tap and run bypass systems and centrifuges, no problem...I'm pretty sure the Melling, Dmax performance replacement pump, can out perform your pumps vacuum #'s set up with just a spring swap...lol

Im pretty sure the main benifits for a dry sump system are being able to mount the engine lower, to attain a lower center of gravity, less windage and pumping losses and technically unlimited volume, perfect evap control, as well as precision flow and heat control...but what do I know...nuthin

And that's mainly why I am here Greg, to learn. I used to get excited when you'd post this chit, thinking some valuable knowledge would be passed along...but I always click out of the thread to find myself disappointed and concerned...I truly hope you can find d someone to post for you, like you find people to build your bucket...then at least there might be something actually mechanically sound and intelligible associated with that hideous avatar and blow hard braggart signature

Um, cocoal, you might want to step back and educate yourself some in regards to your 1st paragraph. You just proved yourself to be compeltely in the dark with that one. I'm not here to stand up for anybody, but when you say something this far off, I cannot resist the urge to chime in. You obviously have NO clue what he was refferring to in regards to crankcase vacuum. The stock system pulls ZERO, NADA, ZILCH for crankcase vacuum. It CAN'T pull vacuum when it is picking up oil from the crankcase and pumping it directly back through the engine where it drains back into said crankcase. What he is refferring to is the ability to maintain a negative crankcase pressure inside of the block by pumping out more than is being pumped back in through the engine. By using multiple stages of pumps for scavenging VS just one stage for pumping, you can pull out more than the engine gets pumped back into it. By doing this you get improved ring seal from the negative pressure on the opposing side of the rings, and a few other advantages.

The rest of what you said was pretty well spot on, but your 1st paragraph you typed out was such an EPIC fail I could not resist posting a response.
 

LBZ

Super Moderator
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Jul 2, 2007
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no I built the Duramax pan 100% myself I roll it up bend it up cut it up the cummins pan was 9 years ago

Curtis must be flattered. All these people copying his ORIGINAL design.
I guess if it works.....why not.
 

LBZ

Super Moderator
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Jul 2, 2007
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OK guys.
I have had pm's with Greg and told him what should be done. He is trying to post some helpful info. Let's give him a chance without jumping on him on every post.
Let's see where this goes.

I'd roll with that.

But only if he deletes his obnoxious sig.
 

COMP461

Diesel Pro
Apr 29, 2008
429
0
0
Aledo Texas
Did you just hear that somewhere, oh Great

Pretty sure I read somewhere that the stock pump in the stock GM wet sump design pulls roughly 5" at idle too Greg, and matches your "@ full power" vacuum claim of 10-12" as well...there is a minimum and ideal requirement/ratio that needs to be adhered to...GM didn't mess that up and the stock pump can and does produce more volume than required, by like 125%??? Which is why we can tap and run bypass systems and centrifuges, no problem...I'm pretty sure the Melling, Dmax performance replacement pump, can out perform your pumps vacuum #'s set up with just a spring swap...lol

I know...nuthin


Wow , I(ME) can do away with a $4800 autovirdi pump and do it with a stock Chevy pump.

You do realize that this pump had 5 scavenge sections each 3 time the size of a stock pump. On Pro Stock Motor we pull 23 to 24 inches of volume in the pan and 28 to 30 Just like my PP I(ME) use at home meaning there is no air and no windage

When you pull vacuum you have to work with the seals . I(ME) put them in backwards of the way the custom aftermarket seal I(ME) use are intended.
 
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THEFERMANATOR

LEGALLY INSANE
Feb 16, 2009
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Impressive :rofl:
Dry sump and crankcase evacuation are two different things

Not entirely. Crankcase evacuation is to maintain a vacuum inside the crankcase by means of suctioning it out. OEM's used pcv or cdr valves to do the little that they do. Another method for many doing pro street is the 45 degree fittings with check valves welded into the exhaust to use the exhaust velocity passing by to create an orifice and pull a vacuum that way. For awhile some were using vacuum/smog pumps to pull a vacuum. But if you have a dry sump, you simply seal the engine up(many will install a vacuum valve to stop crankcase vacuum at a preset point), and allow the scavenge pumps to pull a vacuum. This has been done with dry sumps for at least 20 years that I know of. Why add on a pump, when your dry sump pump can do the vacuuming for you.
 

THEFERMANATOR

LEGALLY INSANE
Feb 16, 2009
3,890
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As to the 45 inches comment, sure is nice of some mod to go around editing things like this. I'll admit comp was getting pretty friggen annoying tooting his own horn in the cylinder head thread, but when he posts actually tech info a MOD comes along and alters it to pure BS. Now THAT is annoying to me when tech specs like that are pertinent info to engine builders.
 

Hot COCOAL

May the farce be with you
Jun 9, 2012
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Um, cocoal, you might want to step back and educate yourself some in regards to your 1st paragraph. You just proved yourself to be compeltely in the dark with that one. I'm not here to stand up for anybody, but when you say something this far off, I cannot resist the urge to chime in. You obviously have NO clue what he was refferring to in regards to crankcase vacuum. The stock system pulls ZERO, NADA, ZILCH for crankcase vacuum. It CAN'T pull vacuum when it is picking up oil from the crankcase and pumping it directly back through the engine where it drains back into said crankcase. What he is refferring to is the ability to maintain a negative crankcase pressure inside of the block by pumping out more than is being pumped back in through the engine. By using multiple stages of pumps for scavenging VS just one stage for pumping, you can pull out more than the engine gets pumped back into it. By doing this you get improved ring seal from the negative pressure on the opposing side of the rings, and a few other advantages.

The rest of what you said was pretty well spot on, but your 1st paragraph you typed out was such an EPIC fail I could not resist posting a response.
Interesting...I will admit I don't understand the complete concept, I thought that the stock setup did indeed pull vacuum. My bad, but thank you for the constructive feedback and explanation

Wow , I can do away with a $4800 autovirdi pump and do it with a stock Chevy pump.

You do realize that this pump had 5 scavenge sections each 3 time the size of a stock pump. On Pro Stock Motor we pull 23 to 24 inches of volume in the pan and 28 to 30 Just like my PP I use at home meaning there is no air and no windage

When you pull vacuum you have to work with the seals . I put them in backwards of the way the custom aftermarket seal I use are intended.

Yes I realize the pump you're using is a multi stage pump with significant potential...stating the obvious is slightly redundant, don't ya think? How bout telling us about the pump...? How much volume does it flow, why this pump instead of the triple lobe Moroso pumps? What makes this pump the pump of choice?

Could you please explain the concept behind installing the seals opposite of standard...?
 

Stingpuller

The Pusher Man
Jan 11, 2007
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central Ohio
Sorry to upset anyone who thinks this is tech

It's his same stuff over and over. Putting seal in backwards was done 20 years ago. Nothing new but he read it somewhere and now it's new again. Lmao If it's tech to you listening to his bs then by all means rock on!
 

Hot COCOAL

May the farce be with you
Jun 9, 2012
4,433
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0
It's his same stuff over and over. Putting seal in backwards was done 20 years ago. Nothing new but he read it somewhere and now it's new again. Lmao If it's tech to you listening to his bs then by all means rock on!

It's only "tech" to me, if and when it can be explained and proven. I didn't know that was a "trick" at all and was wondering at what point it becomes a "trick" vs doing it wrong, and again, why?

I'm here to learn if its worthy to be learnt, irregardless of the source knowledge is knowledge (if/when explained/proven) and as y'all know, Im not afraid to admit and prove I don't know much.
;)

I happily accept the correction and dont mind being told to STFU when I'm in over my head, but I do like to gain knowledge from it:thumb:

And if ya hadn't noticed, I raz Hoagie roll quite a bit, just hoping he might surprise us all with something awesome (response/explanation) and it doesn't happen...I don't consider him a source of much more than free entertainment
 

Dave c

New member
Jul 7, 2013
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I apologize mike, your right I'll try to give him a chance. It's the right thing to do, even though this is not really tech, or sound advice on dry sump systems.

Stingpuller you made my day with the interjected post modifications.
 
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DPC

Member
Jan 2, 2012
323
1
18
Adams, TN
So with this system I assume the stock oil pump and pickup are removed. What is done with the port where the stock oil pump feeds, is it plugged?