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Chips are flying..................... Crank grinding

5K views 31 replies 13 participants last post by  LakesOnly 
#1 · (Edited)
As delivered from Paul Kane:

120 lbs of AMS 6415 chromoly steel




After a day of machine work at Crower:



It's going to loose in the neighborhood of 40-45 lbs. It will end up being 4.5" stroke with 2.200 rod journals

I'll get a couple more pics during the process.

A project for next year...... just decided to get this part out of the way now.

S CP

Jon
 
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#8 ·
The smell of a 600", 940+hp, 11:1 pump gas deal for the boat is in the air......... :partyguy:


S CP :happy:
 
#16 · (Edited)
Do they ever.... the crank shop is busy as hell. They have damn near every machine running. Making stuff from BBC, Subaru's, Nissan, Euro exotics and vintage straight 8's. Saw at least 8 types of billet cranks.

S CP
 
#4 ·
As delivered from Paul Kane:

120 lbs of AMS 6415 chromoly steel




After a day of machine work at Crower:



It's going to loose in the neighborhood of 40-45 lbs. It will end up being 4.5" stroke with 2.200 rod journals

I'll get a couple more pics during the process.

A project for next year...... just decided to get this part out of the way now.

S CP

Jon
Crower does cranks??

:D
Yes. Read about it in a magazine.
 
#6 · (Edited)
As delivered from Paul Kane:

120 lbs of AMS 6415 chromoly steel




After a day of machine work at Crower:



S CP

Jon
Well go-DDAMN that is one sexy bitch!

Something that I fogot to mention (in case you missed it on the other forum): Notice that the snout of the 3.875" stroke commercial steel truck crankshaft (on its side, above) is not shiny-machined but is the same discoloration as the rest of the crankshaft (even though all the journals are nicely polished). Be sure to ask Danny to take a closer look at it and determine whether he thinks that crank was simply bead-blasted or if he believes it has been ion plasma gas heat treated. That is a very well prepared forging and it wouldn't surprise me at all if the workmanship included a heat treat as one of the final steps.

Enjoy, :)

LO
 
#7 ·
As delivered from Paul Kane:

120 lbs of AMS 6415 chromoly steel

FYI to all: AMS 6415 chromoly is a 4340 chromoly recipe which meets a very stringent Aviation Material Specification. It is probably the strongest chromoly crankshaft material known to have ever been commercially available for Ford crankshafts. In fact, Bryant Crankshafts purchased the entire remaining stock of raw forgings from Ford's SVO department when they were put on the chopping block and so the above pictured forging is precisely what Bryant starts with when they carve you one of their famed Ford crankshaft forgings.

You're going to have one hell of a crankshaft there, Jon.

LO
 
#21 ·
Ugly duckling:




A swan is emerging: Almost done.....



I called and asked...hey I'm going to be in the neighborhood can I get a couple more pics of the process...... Pete " oh I think it might be done already. We had another Ford crank on a rush so yours piggy backed on it, hope that's okay"

almost done .....

S CP :D
 
#28 ·
Mine, mine, mine, all mine he can't have it back....... ;)


S CP
 
#26 ·
it will drop 40-45 lbs in weight. it should end-up in the 70-80 lbs range I think. My 565" crank is 75 lbs...same SVO forging.

I'm giving some thought about asking Pete about a pendulum cut on the counter weights. :)bulb


S CP
 
#24 ·
120 lbs of AMS 6415 chromoly steel


It's going to loose in the neighborhood of 40-45 lbs. It will end up being 4.5" stroke with 2.200 rod journals

S CP

Jon
40-45 seems little light . i bet it comes in at about 62-64.
Failed the comprehension part of that Evelyn Woods speed reading class didn't you.



 
#27 · (Edited)
be nice......

hell I misspelled it as loose vs lose anyway ( english as a second language) I might have thrown him off :shock:

S CP :)
 
#25 ·
Crower built a billet pontiac crank for me (a customer) years ago. It was for a 500" piece. The stock type cast cranks las 20 passes, cracked, thn scrapped. It pushed a stock headed 500" firebird into the 7.90's. I thought it ran pretty good for a steel body cast head piece.

I love their products.
Wags
 
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