threw another #3 rod, how to prevent this from happening again. |
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threw another #3 rod, how to prevent this from happening again. |
crash914 |
Oct 29 2019, 03:17 PM
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#1
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its a mystery to me Group: Members Posts: 1,826 Joined: 17-March 03 From: Marriottsville, MD Member No.: 434 Region Association: MidAtlantic Region |
So blew up my #3 rod. wondering what caused this. lack of oil, due to rpm? poor return? oil pump sucking air?
last time it was #2 rod. I really don't want to live with this again. Motor specs, Dual oil coolers with full flow plumbing 102 bore by 80mm stroke long rods, ham heads and valve train. Running to 6800 rpm g loads to 1.5 windage tray modified at pushrod tubes for oil flow tuna can with 1/2 extra oil Pics of horror below. First are this failure, then old failure. |
Chi-town |
Oct 29 2019, 04:38 PM
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#2
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Senior Member Group: Members Posts: 850 Joined: 31-August 18 From: Disneyland Member No.: 22,446 Region Association: Southern California |
What kind of rod is that? Looks aftermarket?
Odd that it's snapped in half and the cap bolts are snapped |
wndsrfr |
Oct 29 2019, 07:31 PM
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#3
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Senior Member Group: Members Posts: 1,430 Joined: 30-April 09 From: Rescue, Virginia Member No.: 10,318 Region Association: MidAtlantic Region |
With the stroker crank, do a really thorough inspection/magnaflux of the crank, especially if it's a DPR or other built up then machined OE one. If it's a new forging it might have survived, but I'd be wary of a reworked OE. Had two DPR's fail on me due to the resulting closeness of the oil channel to the web after offset grinding. Went with FAT performance new forging crank after that.
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