bottom end work

[tommyboy]

can you work on the crank bearings without taking out the engine, im trying to find the cheapest way to replace the bearings

[cortexx]

There is no cheap way , you cant just replace the bearings without doing other work. you'll need to Remove the engine and dismantle it , inspect the bottom end and probably have the crank reground , new bearings , resize the rods , linebore/hone the main bearing girdle etc .

If you are trying to do it cheap you cant , its a skyline motor , do it once and do it right , if you don't you might just aswell set fire to the cash your about to spend and then do it all over after a short period of time anyway.

If you dont have the cash to redress the engine properly then just buy a good used engine either on here or from a reputable JDM dealer .what has happened to the motor that you need to do this ?

I know this sounds a bit harsh but it's reality

[tommyboy]

spun one of the main bearings, the engine still runs but i dont know if i should still be runing it

[cortexx]

There is a reason that it spun a bearing , probably an oiling issue - whats your budget ? and how much work can you do yorself ?

[tommyboy]

i could take the engine out myself and the budget is around $1500-$1600 i alredy have an n1 oil pump i just need to find a good place in winnipeg to get it done

[bobbo]

I would suggest you might be able to do it for close to that price. Replace the crank and rod bearings, get the crank checked/polished, get a gasket kit and studs, replace the rings, check the pistons, have the cylinders honed and do the disassembly and assembly yourself. Make sure you have a proper, calibrated torque wrench and do your homework.
The problem is all the things you SHOULD do while you're there ie. timing belt, water pump, and idlers...

[cortexx]

Hmm you are going to be hard pressed to do that for $1500 - just had a block line honed , New crank balanced , rods resized , over bored , decked , hot tanked and fluxed to make sure it wasnt cracked and with taxes that would take care of most of that cash without a bearing set or anything else that will probably be needed .

I'd look for a good long block and just swap .