ok i know over all replacement off main bearings is easier done with the removal of the engine how ever....if you lack the equipment required to remove the engine its really all on vain...so my question is:

is it possible to replace the main bearings with out removing the engine?

judging from the haynes manual exploded pictures it appears possible IF you remove the cross member and oil pan (for obvious reasons) then youll have acess to the main bearing cap and thus removal of lower bearings it would also seem that with removal of these components i would have at the oil pump aswell but replacing the rear main would ne next to impossible because of the flywheel and adjacent transmission. would the top bearings come out by sliding them to one side or another and then sliding the new ones in coated with assembly lube? granted if i find the crank is overly worn i'll just stick it all back together and go the the junk yard on a all you can carry day.

and who knows, i may pop off the pan and find somethings wrong with the pickup or the pan got dented too close to the pickup. but i have learned to expect the worse and be supprised by little.

 

No, you can't. While you can remove the bottom bearings, the top you wouldn't be able to without dropping the tranny, the T/C, and flex plate on your car then pulling the crankshaft. By that time you might as well of removed the motor. The oil pump you can do. Anyway look at it this way. The bottom end on these motors are incredibly strong. Most of the time a VG dies is because someone broke a timing belt.

S

 

well that doesent explain my oil pressure situation...

its survived a broken timing belt (that make it something like a cancer survivor?) but i dont want ot ruin my heads that have been rebulit...
odds are i am going o buy another car soon, i hope, so i can get arround while i got this one tore up. today its devloped a coolant leak, i think its comming out of the tnermostat housing which is fine i need to replace the thermostat any way but i am going through coolant like mad.

mabe i'll just do it all at once, i donno...i gota all this crap i gotta fix and not enough money to do it (nor the tools) its really frusterating....god its a long list

edit:

this list is currently 22 items long as of now

 

Why wouldn't it explain your oil pressure situation? You might have a bad pump?

S

 

It could in fact be the pickup tubes filter screen being plugged.

The pump could have bad springs and not be generating pressure.

At what points does it have low pressure? At idle? Only when you accelerate?

 

when its cold, pressure its about normal for being cold but when it warms up to operating its sub 15 psi....i was gonna scan the info i got from when i had a co worker check the pressure with a thread in guage but i'll have to manually input it later