A follow up to "oil starvation issues" thread

[pmrphil]

I do see that the crank is burned only on one side, and not where the oil hole is. If it wasn't bent or cracked before, it's at least one or the other now. I don't recall if you said you had it checked for straight/cracks before.

[joespanova]

OK.......
Some of you guys called it correct when you suggested the crank is cracked..........FPI / MPI , whatever you want to call it , shows a crack in the radius near the worst damage................I didn't see it as it was already removed from booth when I got there.
So I finally bury my crank ( did I just say that?).
Now I'm looking at Lunati and Callies.

[joespanova]

Originally Posted by Alan Nyhus

Glad you caught it before things turned into shrapnel. Amazing how the rod brgs. look perfect and the mains are hammered. Aeration, too much oil upstairs, an internal leak...likely a combination of things. Are you going to change where you source the vacuum or eliminate the pump all together?

I am reducing vac to , say , 6-7in , adding a balance tube to opposite side. I'll still pull off valve cover.

[carl hinkson]

If your going to the Callies crank check into the Magnum XL with a Rem finish these are some of the pics of the crank I got for Jake Stelters build. That engine runs 8800 RPM and won Drag week 2 years in a row.

The short counter weights are the way to go alot less windage at high RPM's





http://s172.photobucket.com/user/bel...ml?sort=3&o=91

http://s172.photobucket.com/user/bel...ml?sort=3&o=92

Some pics of the oil pan.

[joespanova]

Thats some crank he's got right there.........
Seems the trend is away from screens now a days........so which pan is he using? I have the 21017 with the tray in the "pic".

[carl hinkson]

Originally Posted by joespanova

Thats some crank he's got right there.........
Seems the trend is away from screens now a days........so which pan is he using? I have the 21017 with the tray in the "pic".

Jake is on F/B

[Ed Wright]

Nice Super Stock crank! LOL

[Mike Taylor 3601]

How much does that crank or whats left of a crank weigh?Is that titanium rods? Would have to be light rod and piston combo to balance,but on other hand has a lot of weight removed opposite of counterweight also.
Joe I say crank was your whole problem,hope it gets better from here for you
Mike Taylor 3601

[joespanova]

Originally Posted by Mike Taylor 3601

How much does that crank or whats left of a crank weigh?Is that titanium rods? Would have to be light rod and piston combo to balance,but on other hand has a lot of weight removed opposite of counterweight also.
Joe I say crank was your whole problem,hope it gets better from here for you
Mike Taylor 3601

Mike I 'm just wondering when it was cracked and for how long.
But I still cant see WHY that caused the condition above? Ok , so it ( assuming it may have been ) was cracked..........
Flexing / moving around........... would do that?

[pmrphil]

The crank will "bend" towards the crack, making contact with the bearing, and opening up the gap on the other side of the crank - it won't take long for that gap (read-"oil clearance") to get larger as the bearing wears, letting the crank move further, etc. etc. Gets ugly pretty fast. At least you salvaged it before it got even uglier, and destroyed everything.