Crankshaft snout snapped

[ramirj2]

Another one bites the dust!

Whipple Stage 2 , 3.250 6rib ATI
Although torqued to spec from that old picture it seems that it wasn’t properly seated
Didn’t check interference tolerance

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[gimmie11s]

holy crap!

 

[olaosunt]

Another one bites the dust!

Whipple Stage 2 , 3.250 6rib ATI
Although torqued to spec from that old picture it seems that it wasn’t properly seated
Didn’t check interference tolerance

Wow!
So sorry . Those damn ATI dampers .

 

[isedawishy]

Another one bites the dust!

Whipple Stage 2 , 3.250 6rib ATI
Although torqued to spec from that old picture it seems that it wasn’t properly seated
Didn’t check interference tolerance

Welcome to the unfortunate club sir! Have you decided how you'll be fixing it?

 

[ramirj2]

Welcome to the unfortunate club sir! Have you decided how you'll be fixing it?

Haven’t got the time to take out the heads.
I need to see if I need a short or a long block.
If it is a short block, it would be wise to buy a sleeved one.
Let’s see....

 

[F1scamp]

Man that sucks... heads are probably not too happy.. 3.25” pulley... that’s pushing it.

 

[isedawishy]

Haven’t got the time to take out the heads.
I need to see if I need a short or a long block.
If it is a short block, it would be wise to buy a sleeved one.
Let’s see....

Hopefully the head castings are okay as I believe they are on national backorder. Check out Sai Li or TKM

 

[Velgen]

Im getting my ATI ready for install, took it to a machine shop to check clearances. What bolt are you guys using?

 

[Jay-rod427]

Im getting my ATI ready for install, took it to a machine shop to check clearances. What bolt are you guys using?

ARP

arp lube under washer and bolt head, and torque to 110-120. light anti-seize on the crank snout.

 

[tsloms]

ARP

arp lube under washer and bolt head, and torque to 110-120. light anti-seize on the crank snout.

I used that ARP and did the same thing as well. No issues at all.

 

[sigintel]

Anyone measure the TG to crank bolt washer distance on ATI and stock damper?
Wish I had.
I think it is very possible the ATI is simple too thick.
I would measure stock damper thickness and ATI.
Measure the thickness sandwiched between TG and washer under crank bolt.
I bet they are different and would get them machined the same.

 

[Velgen]

Anyone measure the TG to crank bolt washer distance on ATI and stock damper?
Wish I had.
I think it is very possible the ATI is simple too thick.
I would measure stock damper thickness and ATI.
Measure the thickness sandwiched between TG and washer under crank bolt.
I bet they are different and would get them machined the same.

I"ll try to measure mine before install.

 

[Velgen]

From what Ive read, Cobra jet card have ATI's, never heard of a cobra jet snapping a crank. What are we doing wrong that they're doing right lol

 

[Jay-rod427]

From what Ive read, Cobra jet card have ATI's, never heard of a cobra jet snapping a crank. What are we doing wrong that they're doing right lol

Proper installation...

 

[Velgen]

From what Ive read, Cobra jet card have ATI's, never heard of a cobra jet snapping a crank. What are we doing wrong that

Proper installation...

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