We were talking about a spun bearing, but could you guys go into more detail about exactly what a spun bearing means.

And two. i was looking at injectors on the internet and i noticed they varried in cc size and i was wondering if the had to actually do with the cubic centimeters of the engine or how much fuel they but into the engine in a certin about of time.

Thanks

 

well for the spun bearing.There is a bearing between the crankshaft and the rod itself. also it is more like a bushing but since the crank rides on a layer of oil between it and bearing so it is called a bearing. The bearing is stationary so a spun bearing is a bearing that has moved and no longer allows for correct oil flow between the crank and rod.

 

That should help you with your injector question. If you cant read it then save it to your HD and zoom in... It is a good quality!

I dont remember who gave me this... but it wasnt me... so credit to who ever you are! lol.

 

93's got it dead on about the spun bearing. It will likely only happen to the crank I think the cam has a different setup. In addition the spun bearing also changes the ballance of the engine as the proper oil flow isn't there and the crank wears away at the bearing in one spot more than the rest. Thus causing the crank to be able to wobble a bit and cause the aweful sound associated with a spun bearing.

CC on an injector is the max amount that it can provide to the cylinder it services. The bigger the injector the more fuel will be able to get intot he cylinder at WOT. BUT you will also need to have the ECU and or a piggy back unit to assist in the proper control of a bigger injector. Too small an injector and you will hit what is refered to as fuel cut. This is when the engine needs more fual than the injectors are providing. Most common in turbo and supercharged engines.