Forged crank really a Cast crank

[Sanguine]

Dropped my 340 stuff off at Armstrongs engine rebuilders a few weeks ago...block to be bored, crank grind and balance, etc.
I had just taken the word of the previous owner it was a forged crank...after all ,it didnt have the cast crank balancer or weights on the flywheel
Armstrongs calls yesterday and says its actually a cast crank and its been running out of balance 80 grams!
WOW! how the hell did the thing stay together for 10+ years????
anyway, they are going to internally balance it...but...WOW!

 

[Coyote Jack]

That sucks Sanguine, It should be O.K. as long as your not going to go to crazy with the HP.

Jack

 

[Sanguine]

ya...big dissapointment...

 

[388dart]

If ypu need a 340 dampner to go with the cast crank - let me know as I have a spare. you will need very light pistons and rods - or a lot of mallory to internal balance. $25 for dampner plus shipping. - cheap via Greyhound.

 

[moper]

Factory "in balance" means anything within about 30g anyway...lol. AAhhhh production line assembly..

 

[64dartwagon]

As I have an actual forged crank, currently looking for a home.