a guy on a different website posted pictures of the result of pushing a FORD block, and rotating assembly past its strength limits,
STRESS IS CUMULATIVE AND NO HIGHLY STRESSED COMPONENT WILL LAST INDEFINITELY
(even the best parts can be pushed past strength limits)
he admits it was done with 28 psi of BOOST and some rather serious RPMS, while making in excess of 1100 hp, while pushing the engine too what was rather obviously a rod failure, with manely aftermarket connecting rods, now a close look at the rod bearing condition and the fact the ARP 2000 rod bolts seem to have held the stress just fine and what appears to be a bit of piston wrist pin damage , and I think the connecting rods held up to enormous stress, they just might not have been ideal for that particular application, the fact is the bearings and rod bolts condition,
seems to indicate the rods were just not up to the pressures and rpms they were subjected too!
but did you catch this??
it jumped out at me, and had me do a double take!
like a cute naked brunette, walking toward me on a beach!
NO ITS NOT A #9,
(like my 10 year old grandson suggested)
theres not 9 cylinders in a ford V8,
and remember the rods pictured facing down not up into the block like it would be when it was numbered
I looked through several MANELY adds and the highest rated rods were rated at 750HP
you may find this info useful, on CRANK SHAFT STRENGTH
MATERIAL....................TENSILE STRENGTH.....PSI.
CAST
CAST IRON.....................APROX 75,000
NODULAR IRON................APROX 95,000
CAST STEEL...................APROX 105,000
FORGED
1053 forged....................APROX 97,000(can be heat treated higher)
5140 forged steel.............APROX 115,000
4130.forged.....................aprox 123,000
4340 forged.....................aprox 143,000
http://www.21motorsports.com/manley...s-6-657-in-long-ford-modular-8-pc-p-n-14040-8
http://garage.grumpysperformance.com/index.php?threads/redline.343/
http://www.summitracing.com/parts/man-14042r-8/overview/make/ford
STRESS IS CUMULATIVE AND NO HIGHLY STRESSED COMPONENT WILL LAST INDEFINITELY
(even the best parts can be pushed past strength limits)
he admits it was done with 28 psi of BOOST and some rather serious RPMS, while making in excess of 1100 hp, while pushing the engine too what was rather obviously a rod failure, with manely aftermarket connecting rods, now a close look at the rod bearing condition and the fact the ARP 2000 rod bolts seem to have held the stress just fine and what appears to be a bit of piston wrist pin damage , and I think the connecting rods held up to enormous stress, they just might not have been ideal for that particular application, the fact is the bearings and rod bolts condition,
seems to indicate the rods were just not up to the pressures and rpms they were subjected too!
but did you catch this??
it jumped out at me, and had me do a double take!
like a cute naked brunette, walking toward me on a beach!
NO ITS NOT A #9,
(like my 10 year old grandson suggested)
theres not 9 cylinders in a ford V8,
and remember the rods pictured facing down not up into the block like it would be when it was numbered
I looked through several MANELY adds and the highest rated rods were rated at 750HP
you may find this info useful, on CRANK SHAFT STRENGTH
MATERIAL....................TENSILE STRENGTH.....PSI.
CAST
CAST IRON.....................APROX 75,000
NODULAR IRON................APROX 95,000
CAST STEEL...................APROX 105,000
FORGED
1053 forged....................APROX 97,000(can be heat treated higher)
5140 forged steel.............APROX 115,000
4130.forged.....................aprox 123,000
4340 forged.....................aprox 143,000
http://www.21motorsports.com/manley...s-6-657-in-long-ford-modular-8-pc-p-n-14040-8
http://garage.grumpysperformance.com/index.php?threads/redline.343/
http://www.summitracing.com/parts/man-14042r-8/overview/make/ford
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