Balancing with 6.0 vs. 5.7 rods.
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Race Director
Joined: Mar 2001
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From: Living in the Hartland
Balancing with 6.0 vs. 5.7 rods.
Just bought a forged 3.75 crank (383) and it is intended for 5.7" rods, my question is if I get a 6.0 rod that weighs close to the 5.7 rod can I use it? Is there more to it than just weight? I understand that usually a 6.0 rod is going to weigh more than a 5.7 but I see a varience in weights in the 5.7 so I am not sure if there are other factors are involved.
Thanks
Thanks
Le Mans Master
Joined: Mar 1999
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From: delmont pa
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Re: Balancing with 6.0 vs. 5.7 rods. (Fevre)
the rod weights more but the piston will be lighter because it will be shorter. the ratio is 2 to 1,1 gram more weight on the long rod you save 2 grams on the piston. :chevy
Thread Starter
Race Director
Joined: Mar 2001
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From: Living in the Hartland
Re: Balancing with 6.0 vs. 5.7 rods. (clem zahrobsky)
So as long as I get a piston/rod combo that is close to the bob weights it should be no problem? Please correct me if I am wrong on this, I want to know what I am talking about when I go to the shop to have it balanced and tell them exactly what I want. I have not bought the rods/pistons yet but I do have a set from when my first stroker moter went :U . 5.7 rods that need resizing and 10/1 comp pistons. I think I might even be able to get the cast crank welded and reground to use in a test motor for a FI sytem.
Thanks again guys
Thanks again guys
Drifting
Joined: Oct 2000
Posts: 1,825
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From: Shawano WI
Re: Balancing with 6.0 vs. 5.7 rods. (Fevre)
So as long as I get a piston/rod combo that is close to the bob weights it should be no problem? Please correct me if I am wrong on this, I want to know what I am talking about when I go to the shop to have it balanced and tell them exactly what I want. I have not bought the rods/pistons yet but I do have a set from when my first stroker moter went :U . 5.7 rods that need resizing and 10/1 comp pistons. I think I might even be able to get the cast crank welded and reground to use in a test motor for a FI sytem.
Thanks again guys
Thanks again guys
Thread Starter
Race Director
Joined: Mar 2001
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From: Living in the Hartland
Re: Balancing with 6.0 vs. 5.7 rods. (Pete79L82)
Pete
Sorry I left out the rings and pins in my desc, I plan on giving the shop the whole rotating assembly so they have everything to balance.
Sorry I left out the rings and pins in my desc, I plan on giving the shop the whole rotating assembly so they have everything to balance.
