Rod bolt failure limit
12-05-2009, 07:54 AM
#1
Rod bolt failure limit When would the stock 2000 ls1 rod bolts start to fail? I have seen 500hp is that wheel horsepower, or is that at the crank? Or is the 500 word just throwen around? I am looking to do a set of heads that will push mine up towards that mark. Can anyone shine some light on this please?
Thanks
Thanks
12-05-2009, 08:44 AM
#3
There is no magic #, some make it, some don't. If the motor has been well maintained it will go the distance for awhile. I have spun my stock motor 7k for a good bit now. Car has 25k miles, so that helps as well. Miles and maintenance will go a LONG way. My car is a 02'.
12-05-2009, 02:57 PM
#6
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i have spun stock rod bolts to 7200 a million times . it has nothing to do with oil or what oil just that once in a while a engine lets go the the panic starts change the rod bolts
if you spin close to 7k or over **** can happen at any time. prob wont but may .
either own it and do it or stay on the porch is my take on it. i spin it and dont worry about it.
if you spin close to 7k or over **** can happen at any time. prob wont but may .
either own it and do it or stay on the porch is my take on it. i spin it and dont worry about it.
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12-06-2009, 09:15 PM
#8
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mine let go with only a handfull of times shifting at 7100. Rod bolt broke. But it had been shifted at 6800 hundreds of times before that with no issues.
12-06-2009, 10:05 PM
#9
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i was making 550whp with mine rev limiter at 6700 beating the hell out of it with no issues but was told i wouldnt want to spin it any higher than that on the stock rod bolts, even if i wasnt making that kind of power. just do arp's if your wanting to spin it high
12-07-2009, 02:11 PM
#14
The new ones are grade 12.9 metric so that is:
minimum yield strength = 159541 psi
minimum tensile strength = 174045 psi
Compared to common Grade 8 bolts:
minimum yield strength = 130000 psi
minimum tensile strength = 150000 psi
ARP2000, LS1 rod bolts:
minimum yield strength = 180000 psi
minimum tensile strength = 200000 psi
minimum yield strength = 159541 psi
minimum tensile strength = 174045 psi
Compared to common Grade 8 bolts:
minimum yield strength = 130000 psi
minimum tensile strength = 150000 psi
ARP2000, LS1 rod bolts:
minimum yield strength = 180000 psi
minimum tensile strength = 200000 psi
12-07-2009, 02:27 PM
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finally somebody says it, its not about power levels, u could run 1500 hp on stock rod bolts if u dont spin it above 3500 rpm. stock bolts in my opinion should not be taken past 6500, if ur motor has enough intake work to even make power above 6500 then whats spendin a little more to put good rod bolts in? (fast-grand, rod bolts-around 100) i spun mine to 6700 and they let go. and i only took it there for about 1 month. keep it at 6
12-07-2009, 03:09 PM
#17
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correct. if u keep the rpms down, the stock bolts should last a good while. even at 4-500 hp
