Crank bobweight
Crank bobweight What is the Bobweight of the lt1 crank?
How much of a driffrence is "safe" to spin to 7000rpm,what is the +\- offset on it?
Isinīt there a error in the bobweight on the crank for the piston-rod assembly weight because of the aluminium light weight pistons?
How much of a driffrence is "safe" to spin to 7000rpm,what is the +\- offset on it?
Isinīt there a error in the bobweight on the crank for the piston-rod assembly weight because of the aluminium light weight pistons?
TECH Enthusiast
Joined: Sep 2003
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From: bethel PA
bobweights very from engine to engine, not every rod and piston weight the same, if you want to spin 7000 RPM you better have everything to with in +/- 1/2 gram if you want it to stay together.when we spun my assembly up we balanced it to with in 1/4 of a gram. the right way to balance is to balance the pistons, I have SRP pistons in mine and they were about 2 grams each off, we flycut under the piston to get them to with in a 1/4 gram, then you weight the big and small ends of the rods and make all those the same, all my manley rods were dead on, then you have a formula you add the piston and rod weights together + you add some for the oil weight, you even need to know your bearing clearance and how much oil will be in there, it take a lot of time to balance one right.
I know how to match and such but what is the LT1 crank stock bobweight?
Iīm spinning my stock bottom end to 7000rpm with no problems
I have read that the bobweight for the stock crank is a bit off,is that true and how much is it?
Iīm spinning my stock bottom end to 7000rpm with no problems
I have read that the bobweight for the stock crank is a bit off,is that true and how much is it?
