These things are HUGE (compared to the stock springs)
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From: Fort Worth, TX
Yea those are just the 60lb springs from cummins I put those in my truck when my head gasket blew a month or two ago. I cant remember where they bind at but I do remember that my machine shop guy said that If i wanted to they have enough room to run a .800 lift cam 
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From: stupid ohio
Originally Posted by Mike Holmen
Brandon, I don't think that your gonna have any coil bind with those springs. If you count the number of loops, they match the stocker. They are just stretched out more. That must be one heck of a cam, you notching the pistons? Its looks like you got one cool project going there. I'm throwing around about building a motor for my truck. I'm bored... 
brandon.
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From: Cummins Technical Center, IN
The springs shouldn't bind-- they appear to actually have one FEWER winding than the stockers.
I agree, though that thicker wire when all else is equal makes coil bind worse, not better.
I don't see enough of a beehive effect to alleviate binding issues.
Look at a REAL beehive spring a-la late model small block Chevy, and you'll see that it's MUCH more pronounced.
Coil bind isn't the reason for a beehive spring-- valvetrain harmonics are. It just happens that other good things result: less bind, lighter retainers, etc.
I agree, though that thicker wire when all else is equal makes coil bind worse, not better.
I don't see enough of a beehive effect to alleviate binding issues.
Look at a REAL beehive spring a-la late model small block Chevy, and you'll see that it's MUCH more pronounced.
Coil bind isn't the reason for a beehive spring-- valvetrain harmonics are. It just happens that other good things result: less bind, lighter retainers, etc.
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From: FL
Do you have to use those springs if you plan on using an EB? I got a tranny on the way, and said to build it for use with an EB. Also will these cause anyhing to wear out faster?
If you can use a vise to compress the spring, might be easier than a C-clamp
If you can use a vise to compress the spring, might be easier than a C-clamp
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From: In the Shop
Even with our highest lift cam ( way over stock ) the 60 lb springs from Cummins have tons of clearance left at full lift.
I have a prototype Helix 4 that even has room left with the 60 lb springs. I had double the normal standard left.
The 60 lb 12 valve springs are great and work very well and to high RPM.
Don~
I have a prototype Helix 4 that even has room left with the 60 lb springs. I had double the normal standard left.
The 60 lb 12 valve springs are great and work very well and to high RPM.
Don~
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From: stupid ohio
Originally Posted by Stamey
So was the bind point, over the stock springs, ever found?
Chris
Chris
brandon.
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