Interesting article on crank thrust failure

[ijames]

Saw this link on the gnttype list and thought some of you might be interested in it as well: http://www.atra-gears.com/crankshaft/ Bruce, any idea what the equivalent 2004R torque converter hub inside diameter is, to compare our force with the THM400 example they use in the article? Also, a FederalMogul engineer commented on the gnttype list that he was trying to get a contoured thrust bearing incorporated into the bearing sets for us.

 

[WE4]

That is an interesting deal. Very informative. We average about 40 psi in line with 300 psi mainline. Id say that is pretty damn good!! Neat find.... BT

 

[Chuck Leeper]

400 converter psi problems

I discussed this with Don Wang some 2-yrs ago. He said the fix he has is to add a restriction to the converter feed orfice. This I have done and have seen ZERO problems w/ the 400/tranny brake combo I run.
I lost a production engine thrust brg prior to the mods. That was the reason we had the discussion. [And, I got tired of rebuilding the 200!!]

 

[MeanBuicks]

Originally posted by ijames
Bruce, any idea what the equivalent 2004R torque converter hub inside diameter is, to compare our force with the THM400 example they use in the article?

1.425"

 

[WE4]

I am really getting good at this vetriliquist stuff! ROFLMAO!

Thanks again Greg, He comes thru AGAIN!!!

Greg we really have to stop meeting like this...
People will talk...........



Bruce
WE4

 

[ijames]

Great, Greg. So, 1.425" diameter gives 1.59 square inches, and at a cooler line/converter inlet pressure of 40 psi (from Bruce) that is a force of 64 pounds on the crank thrust. They said the Chevy big block could support what, 210 lbs. Now, anyone know the id and od of the Chevy thrust face and the Buick one? I want to compare the areas and the loading.