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2295s on LYs and balancing #1625056 05/25/14 11:28 PM 05/25/14 11:28 PM
Joined: Dec 2012 Posts: 50 Australia B big_wedge OP member
big_wedge OP member B Joined: Dec 2012 Posts: 50 Australia	Iv read that when using the trw 2295 piston on the old six pack rods a balance job will require adding mallory weight to the crank, but what about when using the 2295s on the LY rod, is adding weight still needed?

Re: 2295s on LYs and balancing [Re: big_wedge] #1625057 05/25/14 11:30 PM 05/25/14 11:30 PM
Joined: May 2007 Posts: 174 Oklahoma H hemiiroc member
hemiiroc member H Joined: May 2007 Posts: 174 Oklahoma	Usually not.

Re: 2295s on LYs and balancing [Re: big_wedge] #1625058 05/25/14 11:53 PM 05/25/14 11:53 PM
Joined: Aug 2003 Posts: 43,190 Bend,OR USA C Cab_Burge I Win
Cab_Burge I Win C Joined: Aug 2003 Posts: 43,190 Bend,OR USA	Anytime you change one componentlike the rods or pistons, even the wrist pins in the rotating assembly you should have it check for balance The factory pistons are heavy, so are the six pak rods, but in a different place You have two different weights that are looked at and measured when balancing rotating masses, the recpricating(SP) and the actual weights of each component are matched so they weigh the same as the lightest individual components in the crank assembly, all rods weigh the same on both ends, all pistons, wrist pins, rings, bearings and so on weigh the same Mr.Cab Racing and winning with Mopars since 1964. (Old F--t, Huh)

Re: 2295s on LYs and balancing [Re: Cab_Burge] #1625059 05/26/14 02:07 AM 05/26/14 02:07 AM
Joined: Dec 2012 Posts: 50 Australia B big_wedge OP member
big_wedge OP member B Joined: Dec 2012 Posts: 50 Australia	it is my intention to get a balance done on this assembly I just was not sure if moly needed to be added when using this rod and piston together, thank you both for the replys

Re: 2295s on LYs and balancing [Re: big_wedge] #1625060 05/26/14 08:44 AM 05/26/14 08:44 AM
Joined: Mar 2006 Posts: 9,910 Eighty Four, PA B G Racing master
B G Racing master Joined: Mar 2006 Posts: 9,910 Eighty Four, PA	With the sixpac rods and 2295s on a crank that was balanced for the LY and a lighter piston combo you may need Mallory weight if the total bobweight exceeds 20 grams.It depends on how much weight was removed from the crank on the previous balance. [IMG]http://i430.photobucket.com/albums/qq21/ajcasini/max_zpsdppwd9km.jpg[/IMG]

Re: 2295s on LYs and balancing [Re: B G Racing] #1625061 05/26/14 09:00 AM 05/26/14 09:00 AM
Joined: Dec 2012 Posts: 50 Australia B big_wedge OP member
big_wedge OP member B Joined: Dec 2012 Posts: 50 Australia	oh ok, just to clarify this is a complete different build. I am not changing from six pac to ly rods. the 2295s have all been balanced to the same as have the LY rods as well as shot peened, aftermarket bolts & resized etc etc. the factory fordged crank is ground .010 on all journals, the set just needs to be balanced complete. 8155982-trw2.jpg (54 downloads)

Re: 2295s on LYs and balancing [Re: big_wedge] #1625062 05/26/14 10:44 AM 05/26/14 10:44 AM
Joined: Feb 2005 Posts: 4,314 Prospect, PA BSB67 master
BSB67 master Joined: Feb 2005 Posts: 4,314 Prospect, PA	Quote: ....when using the 2295s on the LY rod, is adding weight......needed? This is the question, right? I'd go with the "Usually not" response

Re: 2295s on LYs and balancing [Re: BSB67] #1625063 05/26/14 01:55 PM 05/26/14 01:55 PM
Joined: Aug 2003 Posts: 43,190 Bend,OR USA C Cab_Burge I Win
Cab_Burge I Win C Joined: Aug 2003 Posts: 43,190 Bend,OR USA	I should have stated that on a stock BB Mopar forged steel crank that was internally balanced at the factory you may need to have some of the balance holes welded up with those parts, some of them, not all of them I've built a bunch of 440 with those parts, I'm sure almost all of them had metal added by welding in the balance holes, some probally had some additional metal removed by drilling the counterweights also Mr.Cab Racing and winning with Mopars since 1964. (Old F--t, Huh)

Re: 2295s on LYs and balancing [Re: big_wedge] #1625064 05/26/14 02:54 PM 05/26/14 02:54 PM
Joined: Mar 2006 Posts: 9,910 Eighty Four, PA B G Racing master
B G Racing master Joined: Mar 2006 Posts: 9,910 Eighty Four, PA	Quote: oh ok, just to clarify this is a complete different build. I am not changing from six pac to ly rods. the 2295s have all been balanced to the same as have the LY rods as well as shot peened, aftermarket bolts & resized etc etc. the factory fordged crank is ground .010 on all journals, the set just needs to be balanced complete. The original question was Mallory weight needed?You won't know till the bobweight is calculated and the crank is spun on the balancing machine. [IMG]http://i430.photobucket.com/albums/qq21/ajcasini/max_zpsdppwd9km.jpg[/IMG]

Re: 2295s on LYs and balancing [Re: B G Racing] #1625065 05/27/14 01:25 PM 05/27/14 01:25 PM
Joined: Jan 2003 Posts: 75,015 U.S.S.A. JohnRR I Win
JohnRR I Win Joined: Jan 2003 Posts: 75,015 U.S.S.A.	Quote: Quote: oh ok, just to clarify this is a complete different build. I am not changing from six pac to ly rods. the 2295s have all been balanced to the same as have the LY rods as well as shot peened, aftermarket bolts & resized etc etc. the factory fordged crank is ground .010 on all journals, the set just needs to be balanced complete. The original question was Mallory weight needed?You won't know till the bobweight is calculated and the crank is spun on the balancing machine. This is the correct answer ...

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