spun main braing/overheaded?

[Aaron]

hey well i just got a 90 240sx the guy overheaded it in the summer he says he spun the main baring, since he over headed it i figured id get a new head gasket but with the main baring could that have messed up anything else?

[IvoryJ30t]

if a main bearing is spun, the motor will have to be torn down and rebuilt.

does the motor clack or knock? might sound like a thumping sound. if it does, the motor has to be rebuilt or replaced.

[Aaron]

IE: like just a new head gasket and main baring set?

[IvoryJ30t]

at least. the crank journals might be scored/scorched and may require machining to be trued. the rings may be scorched. the motor has to be removed from the car and taken apart. its not as simple as just replacing the bearings. having a spun bearing is a major problem.

[Aaron]

damn damn damn lol so major money eh... would it be cheaper to do a sr20det swap or just find another stock engine

[IvoryJ30t]

if your going to be upgrading, i would say this is the time to rebuild the motor with good internals and go turbo.

[IvoryJ30t]

or just swap.

[Aaron]

so how much would i be lookin at for a swap and how much just to rebuild it ball park

[IvoryJ30t]

a couple thousand either way. the cheapest thing to do would be to get a used motor. unless your building for speed, then you have to decide what is the best option for you.

[Aaron]

alright thnx man.

[Smurf6x6]

Just swap it if the crank it scored. I picked up my KA for my coupe for $300 with 150km on it. there not hard to find.

[Aaron]

ye well mm RITE i have no idea lol im 17 havent learned anything really about motors i know pretty much everything about styling just not performance

[Smurf6x6]

I'm 17. I bought my 240 with a thrown rod for $500.

[Aaron]

like i said i have no idea about motors i know pretty much how to point out the dizz the head the block n how to change the oil

[Smurf6x6]

u got MSN?

[Aaron]

ye [email protected]