Engine build

[x MadMAX DIESEL]

Some of you may know I lost a piston lastnight, well think so anyway. I gotta get it fixed one way or another soon. I may end up doing a minor build which would consist of lb7 pistons (probably just cut), carrilo rods and the 3 keyways. May just end up going back with stock parts, not sure yet. But just wondering here, I am sure the machine shop will figure it out for me... What kind of extra work needs to be done to allow for the lb7 pistons in my lbz? adding mallory to the crank, shave counterweight, have to use the lb7 crank?

 

[quadracer37]

i would have your machine shop delip the lb7 pistons for you. probably fresh rings, head studs to start

 

[blk smoke lb7]

Some of you may know I lost a piston lastnight, well think so anyway. I gotta get it fixed one way or another soon. I may end up doing a minor build which would consist of lb7 pistons (probably just cut), carrilo rods and the 3 keyways. May just end up going back with stock parts, not sure yet. But just wondering here, I am sure the machine shop will figure it out for me... What kind of extra work needs to be done to allow for the lb7 pistons in my lbz? adding mallory to the crank, shave counterweight, have to use the lb7 crank?

Send henry a pm and ask him he will know exactly what you need to do and you can get a price on the motor stuff at the same time.

 

[jneal]

Lb7 pistons are lighter than your existing LBZ pistons. They will have to take weight away from the LBZ crankshaft.

 

[blackdirtymax]

Yep , which will in turn weaken an already proven crank that has been breaking on stock trucks


Built motor , duel fuelers , 60's overs , gtx4202r

 

[jneal]

You're freakin joking right?

 

[x MadMAX DIESEL]

Send hemry a pm and ask him he will know exactly what you need to do and you can get a price on the motor stuff at the same time.

Thanks, but I can much better prices through other people I know.

 

[SmokeShow]

You're freakin joking right?

I was wondering how taking weight out of the counter weights would make the crank weaker? :hug:


On that topic though, do they take the weight out of each counter-weight equally or....?

 

[ripmf666]

Thanks, but I can much better prices through other people I know.

I sent you prices still even if you say you can get cheaper

 

[ripmf666]

I was wondering how taking weight out of the counter weights would make the crank weaker? :hug:


On that topic though, do they take the weight out of each counter-weight equally or....?

Pics here will show you the counter weights lol
http://www.duramaxdiesels.com/forum/showthread.php?t=6679&highlight=build

 

[x MadMAX DIESEL]

I sent you prices still even if you say you can get cheaper

Thanks those are close

Sent from my PC36100 using Tapatalk

 

[blackdirtymax]

All I was saying was that if you keep taking material from something that is already weak , you stand a chance of it breaking quicker. That was my point.........


Built motor , duel fuelers , 60's overs , gtx4202r

 

[jneal]

You're not taking material away from where the crankshaft has its strength. Counterweights are along for the ride.

 

[sweetdiesel]

On that topic though, do they take the weight out of each counter-weight equally or....?

Mitch hopefully you would but it would be what ever it took to balance it correctly

 

[JoshH]

You're not taking material away from where the crankshaft has its strength. Counterweights are along for the ride.

I agree. Counterweights are not a load bearing part of the crankshaft. They create a load or counteract a load. However you want to look at it.

 

[THEREDDEVIL]

Sorry to hear about the piston. Keep us posted on your build brother. :thumb:

 

[x MadMAX DIESEL]

I'm gonna pull the engine and do the install. I haven't got a chance to talk to the machine shop today as they close at noon Friday and I didn't know that... Anyways for the ones that have had theres built, do you guys bring the engine to them bare longblock, or leave it as it would come out of the truck? Like leave alternator, intake runners turbo ect? I have a feeling I will need to remove that stuff, just kinda curious. ps. Mitch I am probably going to Smiths... 2 of my dads buddies suggested that place aswell.

 

[paint94979]

Most machine shops will only want the short block.

 

[JoshH]

I took mine in completely disassembled.

 

[x MadMAX DIESEL]

What if I want them the build a long block?