Save a fortune if your crank shaft journals are damaged

Do not ride the bike any further, otherwise you could have a big bill.

1. Check the electrics on the oil pressure switch and light 2. Buy a new oil pressure sensor, an easy fix 3. Oil pressure release valve malfunctioning (could have the wrong spring in it or worn piston clearance in valve body), an easy fix . 4. Leaking oil seal (or backwards installed) on the crankshaft (under the timing cover), an easy fix. 5.Worn out oil pump (when oil gets hot it loses it's viscosity,or it's thickness and thus an oil pump with worn clearances will not pump it effectively) also easy to fix. 6. Worn main bearings/worn crank journals (oil escaping from clearance between crankshaft journals and shell bearings on crankshaft big end resulting in loss of pressure). This could be the case on a bike that has high mileage Requires a rebuild. 7.Also, the drillings in the timing cover and oil pump through crankcase to oil pipe junction block must be clean.

NEED ENGINE OVER HAUL IF ROD KNOCKING CRANKSHAFT ROD BEARING JOURNAL BEARING DAMAGED.PISTON BORE DAMAGED YOU HAVE TO HONE OR REBORE CYLINDER BLOCK.CRANKSHAFT HAS TO BE REGROUND WITH NEW BEARINGS.

It can be done as long as the journals on the crankshaft are smooth. I would use Plasti-gauge to check the clearance between the new bearing and crankshaft. If you have a bad rod bearing already, or the crankshaft journal is really scored, it's a waste of time.

Well the cam bearings will have to do with this also,if it has them,if not it can be the wear in the cam carriers.But most likely the crankshaft journals are worn to much,the crank would need turning,and over size rod,and main bearings would need to be installed.

There is no "alternative" method of repairing any crankshaft. (you didn't mention an alternative to what?)It can sometimes be cut undersized and "fat" bearings installed but most times the journals are not thick enough to do this. The journals can be welded over and re-machined but this is very expensive. The only real option is obtaining a good used one or a new one.