What mains to use

[Slowmax]

Just gonna refresh the engine. Putting in all new bearings and seals. Main studs, balancer etc. looking for more power this season too. Btw when i had stock bolts, they were reused 100,000 mile stock bolts lol

Good to hear, thank you for being able to elaborate on it.

 

[schulte]

I had socal billet mains and main studs on my first 1,000hp motor and the mains showed some signs of walking. Now it has a socal girdle too.

 

[moparkxracer]

Wonder if someone would come out with a one piece part that is the girdle and caps as one part to locking everything together.

 

[motoking_1990]

Wonder if someone would come out with a one piece part that is the girdle and caps as one part to locking everything together.

This would be the way to go. Less parts to fail.

 

[schulte]

This would be the way to go. Less parts to fail.

Such a device does exist, they're made for 7.3's.

 

[moparkxracer]

Our caps are counter sunk into the block.

 

[andy-stevenson]

Is that a socal oil pump near the bottom of the bottom picture? Definitely looks like a tight squeeze.

 

[Burn Down]

Our caps are counter sunk into the block.

Mopar what bearings did you use (clearance) and what kind of oil pressure is the socal pump putting out hot and cold?

 

[moparkxracer]

I am using the extra clearance ones on the mains, standard on the rods. The oil pump is no joke on oil pressure, you have to run the bypass if you don't you WILL blow the oil filter off. It's over 100 psi hot and cold before the bypass. in the motor I see abt 30 at idle and 60 at 2k rpm.

 

[motoking_1990]

I have yet to have a duramax apart. Are they four bolt? This photo shows two for girdle.

 

[Burn Down]

I am using the extra clearance ones on the mains, standard on the rods. The oil pump is no joke on oil pressure, you have to run the bypass if you don't you WILL blow the oil filter off. It's over 100 psi hot and cold before the bypass. in the motor I see abt 30 at idle and 60 at 2k rpm.

Ya thats what I heard. I think Simon blew his filter off of Abby the first time he started his with The DPR billet pump... Thanks for the info:thumb:

 

[moparkxracer]

they are 2 from the bottom and 1 from each side. There is not enough room to do splayed caps.

 

[mike diesel]

I have yet to have a duramax apart. Are they four bolt? This photo shows two for girdle.

Caps are held down by 2 bolts, 2 smaller bolts also enter the mains through the side of the block.

I am now contemplating a girdle...

my 165,000 mile stock pump puts out 35psi at idle and 60 psi at 1100 rpm..or am I missing something about that socal pump moparkx has??

 

[moparkxracer]

It's expensive, but you get what you pay for. It also has a keyed shaft. you will have to have your stock gear slotted. I have pics if anyone wants to see.

Ya thats what I heard. I think Simon blew his filter off of Abby the first time he started his with The DPR billet pump... Thanks for the info:thumb:

 

[Burn Down]

Caps are held down by 2 bolts, 2 smaller bolts also enter the mains through the side of the block.

I am now contemplating a girdle...

my 165,000 mile stock pump puts out 35psi at idle and 60 psi at 1100 rpm..or am I missing something about that socal pump moparkx has??

I believe they run more volume and as mopar mentioned the bypass/relief is adjustable If Im not mistaken. So you can make up for HX mains, opened up piston squirters and a general low factory oil pressure setting anyway

It's expensive, but you get what you pay for. It also has a keyed shaft. you will have to have your stock gear slotted. I have pics if anyone wants to see.

Yep lets see em.

 

[moparkxracer]

I'm 60 right off idle just went out to check. I am also running extra clearances on mains, large oil lines going to compound turbos. kind of like having extra oil leaks internal to engine. this pump was worth the price for my build. on my last build I had the same bearings, and oil lines going to the turbos and my pressure was abt 1/2 what it is now. I did add the huge oil cooler this go around.

granted my build is ridicules and way over done.

Caps are held down by 2 bolts, 2 smaller bolts also enter the mains through the side of the block.

I am now contemplating a girdle...

my 165,000 mile stock pump puts out 35psi at idle and 60 psi at 1100 rpm..or am I missing something about that socal pump moparkx has??

 

[mike diesel]

I'm 60 right off idle just went out to check. I am also running extra clearances on mains, large oil lines going to compound turbos. kind of like having extra oil leaks internal to engine. this pump was worth the price for my build. on my last build I had the same bearings, and oil lines going to the turbos and my pressure was abt 1/2 what it is now. I did add the huge oil cooler this go around.

granted my build is ridicules and way over done.

Ok i figured something was different:thumb:

 

[moparkxracer]

This is the pump, and some of my oiling system, the line going to the back side of the pan comes from the bypass. I did not run over size piston oilers this time around. that was in debate during this build and could not get a strait answer...

 

[unionmax481]

What bypass system are you running did you get from socal when ordered the oil pump and are running the oil cooler block off and just external oil cooler instead

 

[S Phinney]

You can get them from Socal or others. It is made by Peterson. It is a pressure relief that would allow the oil to blow off and return to the pan at your desired location. I return mine in the front if the pan.