Banks Podcast

[Yngdmax92]

Did anyone by chance listen to the podcast with Banks on there talking about the l5p engine.

I did, and one thing that through me for a loop with the whole conversation was he stated that alternate firing cams are not the answer to duramax crankshaft failures and he has some damn good reasoning why.

Dont quote me on this, but he stated that the counter balance of the crank (fly wheel, and damper) are the problem more or so the damper being number one.

Stated he actually could measure bending of the crankshaft, causing mains to fail / cranks to break. Pretty interesting stuff

 

[c20elephant]

No I did not, post the link...

I've been leaning toward replacing my balancer (torsional vibration damper) for quite some time. Why, if you had seen the driveline carrier bearing isolator rubber dry rotted and cracked at 37,000 miles in 2013 you would think the same. It's gonna happen when I replace the fan clutch (or the water pump fails) and the hose just behind it....

 

[Yngdmax92]

https://www.youtube.com/watch?v=jtrpnLIv8vc

this is the bottom end

https://www.youtube.com/watch?v=3lbuI-Okz6Q

this link is the one where he talks about the alternate firing cams vs dampers. around 24 mins. really really neat stuff.

 

[JoshH]

I listened to it, and he did make some valid points. There isn't one single thing you can do to guarantee a crank won't break, but I think we have seen enough guys that have had repeated crank failures fixed by going alternate firing order to know that it does help.

 

[TheBac]

So all that video means is he read the multiple threads about the subject on this forum, and has now put the ideas out there as his own.
Remember, everything he does is to benefit himself, not other people.

 

[DMAXchris]

Don't want to break a crank? Keep the torque out of it below 2500 rpm. Take your vvt and throw in the garbage and get a normal turbo and deal with some lag like a man.
Simple as that.

 

[Yngdmax92]

By all means I am not agreeing with him. I don't have the knowledge to argue something like this but only to pull information from and to learn.

 

[JoshH]

I did find it very interesting. I listened to the whole thing. I think Gale Banks is a very smart guy when it comes to all engines, and I think he has a lot to offer the diesel aftermarket. I think his products are high quality, and I'm excited about his line of balancers he says they are working on. It will be good to have more options available.

 

[Yngdmax92]

Don't want to break a crank? Keep the torque out of it below 2500 rpm. Take your vvt and throw in the garbage and get a normal turbo and deal with some lag like a man.
Simple as that.

I guess he deals with marine applications quite often for the navy and needs rpms, rpms kill these cranks. Thats where he measures the bends of the cranks after long cycles/loads of high rpm.

I understand what your saying though, only makes sense to keep the torque out of it, less stress.

 

[DMAXchris]

I guess he deals with marine applications quite often for the navy and needs rpms, rpms kill these cranks. Thats where he measures the bends of the cranks after long cycles/loads of high rpm.

I understand what your saying though, only makes sense to keep the torque out of it, less stress.

I firmly believe with zero knowledge of metallurgy or fancy engine dynamic analysis that too much torque breaks them. Heck,even in stock form they are making 1000 ft lbs with a tune and trans. Tire frying, off idle torque is awesome but its super hard on parts.

I was half joking about the vvt part, btw. :cool2: