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Balanced one of the new Forged cranks yesterday
January 10 2006 at 10:06 AM
No score for this post Andy (Login mustangracer2)
from IP address 157.130.43.90

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Wanted everyone to know I had one of the new forged cranks balanced. I got it from Bryan. Had to add 52 grams at the rear, and remove 30 grams from the front. This is much better than the older Cast steel cranks that took 3 slugs of heavy metal on both ends. It was a 4.500 stroke crank, eagle rods, JE pistons.

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DaveMcLain
(Login DaveMcLain)
64.251.140.161 Balancing one for aluminum rods soon.
No score for this post January 10 2006, 10:35 AM

Wes is going to give one of those steel 4.500 stroke cranks a try in his engine. He has a set of aluminum rods so his bob weight is pretty light. On his Scat cast crank it took one 1x1.100 slug in the front and two in the back to get it right, it sounds like this deal might not need any heavy metal with a light bob weight.

Were you using a 6.800 or 6.700 rod with that crank? How was the clearance with the counterweights?



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RobC
(Login monsterbaby)
69.66.24.250 just another thought on possible balancing
No score for this post January 10 2006, 4:47 PM

could you balance them like the old 428 FE using a external balance flexplate with the internal balanced front spacer and possibly reduce or eliminate having to put any weight into it.
I was just thinking this might be a good way since the front took reduction and the back took adding.

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Andrew
(Login FastFordAndy)
68.68.13.149 What was Your Bob Weight?
No score for this post January 10 2006, 12:21 PM

Please post your bob weight as I need this to pass on to the manufacturer. Thanks, another Andy.

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DaveMcLain
(Login DaveMcLain)
64.251.141.110 Bob Weight
No score for this post January 10 2006, 1:35 PM

The bob weight we will be using will be 2112 grams. Again, that bob weight took 3 pieces of heavy metal with the Scat cast crank. This is a 6.700 rod engine so it's going to be interesting to see how much if any I have to take off of the counterweights to get clearance at BDC.



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Andy
(Login mustangracer2)
157.130.211.38 Bob weight etc.
No score for this post January 10 2006, 3:29 PM

The bob weight was right around 2950 grams. This is a 6.800" rod combo.

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Lem Evans
(Login l-evans7)
69.166.129.47 Typo ?
No score for this post January 10 2006, 4:38 PM

Are you sure it wasn't 2350 ?

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bobn
(Login zephyrbob)
64.91.86.141 bob weight
No score for this post January 10 2006, 8:11 PM

sorry guys i cannot help myself: bob weight is 235pounds, lol
my wife is a good cook! bob netherland
 
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