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. |
crash914 |
Nov 5 2019, 06:31 AM
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#2
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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 |
But what a fun motor! Light up the tires whenever at full throttle. Pulled great out of corners, lots of lateral acceleration. I could finally keep up with all the modern cars, except the Tesla on autocross tires. Tesla's suck, but man do they accelerate fast!
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Superhawk996 |
Nov 5 2019, 06:27 PM
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#3
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914 Guru Group: Members Posts: 5,899 Joined: 25-August 18 From: Woods of N. Idaho Member No.: 22,428 Region Association: Galt's Gulch |
But what a fun motor! Light up the tires whenever at full throttle. Pulled great out of corners, lots of lateral acceleration. I could finally keep up with all the modern cars, except the Tesla on autocross tires. Tesla's suck, but man do they accelerate fast! Depends on the definition of fun. The ability to light up the tires whenever really means you have too much power for the tire you're running. If you truly want to be fast, the ability to ground power without lighting up the tires is key to being fast. Lighting up the tires means you've lost both longitudinal grip and lateral grip. That isn't a good thing. . . . but many consider it fun. (IMG:style_emoticons/default/dry.gif) If you can light up the tires that easily, I'd ask you to do some soul searching about how much power you really need to maximize your lap times. You may find less power, or conversely, more tire, is actually faster. To use an extreme analogy. If I put 2" wide hard compound motorcycle tires on a 914, I could light up the tires at will with something on the order of a 1.7L's power. It may be fun (i.e. burning rubber and/or drifting) but I assure you it won't be fast. The reason a Tesla P100D in Ludicrious mode is so fast (in a straight line) is because it can ground the power (via AWD). It isn't losing grip, and, therefore losing longitudinal acceleration (and by default) lateral grip. Not much drama, but the Tesla P100 D ludicrous mode launches with about 1.4G of Longitudinal Acceleration. Very hard to match that with production car running an Internal Combustion engine. Personally, prefer the sound of an air cooled motor (especially a six) any day the week over the silence of an EV. (IMG:style_emoticons/default/aktion035.gif) |
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