Why Would Forged Engine Fail After 10k
22 June 2011, 03:45 PM
#31
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what is classed as normal operating temp? mine has always been on a steady 90 when drivign around locally no matter how long, soon shoots up to near 100 on spirited driving, but doesnt go more than that tbh.. i always thought 85 degrees plus is ok to plaster it.. but surely 80 degrees is a lil on low side? spesh when cylinder 3 is hottest and the others may be lower temp?
22 June 2011, 07:34 PM
#32
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i presume you disconnected the cam sensor and dry cranked it till the engine oil light went out when doing the oil changed if not there are quite a few threads on here where engines have gone **** up after 2k miles after oil change
22 June 2011, 11:23 PM
#35
You want the oil temp to be around 95 degrees, otherwise you dont burn off the contaminants in the oil and the oil quality deteriorates more quickly.
If you are leaving the car stood for 2 months between starts, it's going to drain the oil pump dry and so you will be dry cranking the engine, it's better to start the engine more often, or alternatively fit an acusump and discharge that prior to starting the car after a long time unusued, that will then prime your oil pump and the bearings before the engine turns over.
The engine being forged doesnt add any strength to the engine in terms of bearings, you would need to use uprated bearing materials for that, and even then these will wear quickly with no oil supply. You have to remember the Subaru engine uses very small surface area bearings due to its short block length compared to most other engines, so they will be damaged easier when you dont supply the bearings with oil.
If you are leaving the car stood for 2 months between starts, it's going to drain the oil pump dry and so you will be dry cranking the engine, it's better to start the engine more often, or alternatively fit an acusump and discharge that prior to starting the car after a long time unusued, that will then prime your oil pump and the bearings before the engine turns over.
The engine being forged doesnt add any strength to the engine in terms of bearings, you would need to use uprated bearing materials for that, and even then these will wear quickly with no oil supply. You have to remember the Subaru engine uses very small surface area bearings due to its short block length compared to most other engines, so they will be damaged easier when you dont supply the bearings with oil.
23 June 2011, 05:06 AM
#36
You want the oil temp to be around 95 degrees, otherwise you dont burn off the contaminants in the oil and the oil quality deteriorates more quickly.
If you are leaving the car stood for 2 months between starts, it's going to drain the oil pump dry and so you will be dry cranking the engine, it's better to start the engine more often, or alternatively fit an acusump and discharge that prior to starting the car after a long time unusued, that will then prime your oil pump and the bearings before the engine turns over.
The engine being forged doesnt add any strength to the engine in terms of bearings, you would need to use uprated bearing materials for that, and even then these will wear quickly with no oil supply. You have to remember the Subaru engine uses very small surface area bearings due to its short block length compared to most other engines, so they will be damaged easier when you dont supply the bearings with oil.
If you are leaving the car stood for 2 months between starts, it's going to drain the oil pump dry and so you will be dry cranking the engine, it's better to start the engine more often, or alternatively fit an acusump and discharge that prior to starting the car after a long time unusued, that will then prime your oil pump and the bearings before the engine turns over.
The engine being forged doesnt add any strength to the engine in terms of bearings, you would need to use uprated bearing materials for that, and even then these will wear quickly with no oil supply. You have to remember the Subaru engine uses very small surface area bearings due to its short block length compared to most other engines, so they will be damaged easier when you dont supply the bearings with oil.
Thanks for the information, i did do it after oil changes but not after it had been stood, so costly lesson learned
Do you know who makes up rated bearings as i thought thats what acl were.
Last edited by ditchmyster; 23 June 2011 at 05:13 AM.
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