streetracer99x

Okay so I used the search and could not find a thing on this...

So I believe that I spun a bearing or something in the bottom end is knocking do I have to take out the motor or can I fix it with the motor in the car? I ether spun a bearing or blew a piston ring...

nodsetse

Both can be done with the engine in the car, but it's much easier with it out.

streetracer99x

okay well i most def think its in the bottom of the motor... i really really dont want to take the engine out yet again what kind of tools would i need to take the bottom end apart? im going to keep it in the car..

nodsetse

Well, once you remove the oil pan you should be able to get to all the crank & rod bearings. Don't know if you'll have enough room to work, so might have to drop the subframe on one or both sides. Just the usual tools that type of work implies, nothing special if it's a crank bearing.

streetracer99x

I already dropped the sub frame.. The reason why I think its a bearing is because there is gold shavings in my oil pan and i would a little tiny what looks like a lock ring in the pan but nothing else. so once i take all that out from the oil pain plus the oil pan I will be able to hopefully see my problem correct?

nodsetse

Hmm...you can't see the bearings until you remove the caps, so no, just dropping the pan won't enable you to see that issue. You won't be able to see the upper half of the bearings until you drop the crank, so again, you have to disassemble a bit more to see the problem. Make sense?

streetracer99x

Yeah it sorta makes sence... Will I have to time all that stuff again? I was looking at a manual but it doesnt show all of the parts that im dealing with.

weezyfbayba

are you boosted?

streetracer99x

no i am not boosted

thendawg

iTrader: (2)

If you spun rod bearings you damaged the journals on the crank - end of story - pull the motor and do this properly - dont take shortcuts - only special tool really needed to yank the motor is a hoist ("cherry picker") which you can rent - you can pull the motor in about 8-9hrs for a normal person

thendawg

iTrader: (2)

ALso you cant get to the rod caps just by dropping the oil pan - you will need to remove the balance shafts/assy, oil pump, and lower block reinforcing assy (practically the bottom half of the block)

Windu

If you tear into it and find a spun main you better pull it all the way out cuz you will need to have it line honed.

streetracer99x

but would i have to time it all again or is the timing just for the cams?

yamaha16bw

Yes but its not hard to do.

Windu

yes. either way you will have to pull crank. if its a rod you will have to pull the head too.

TCpete

how the hell did u manage to do this???

and mark the timing chain with a sharpie and on the crank aswell so they line up... HELLO...

BTW i advise you take the motor out... it will make your life alot easier...

Windu

^Amen to that TCpete

TcPrincess

i would also pull the motor, it will make it a lot easier. also, just because you spun a bearing, doesn't mean you damaged the crank or block. just start tearing it apart and do it right or you'll be doing it again.
you might be better off getting a new short block or used motor. GL.

nodsetse

You can replace pistons & rods from the bottom, you don't have to pull the head, it's just easier if you do.

vettereddie

Not familiar with the 2AZ, but on the 1NZ there isn't room between crank journals to pull the pistons, they have to come out top-side.

Thanks Toyota! (1NZ-FE from a 2004 Scion xB)


Can someone verify the 2AZ pistons will clear coming out the bottom?

FYI, one of our southern Maryland members had a similar issue, where he had crank walk and chewed into the journal. Saved himself a lot of trouble though rather than trying a repair he just bought a used long block and dropped it in after a compression check. Hasn't had an engine problem since. If you need to find one, use car part. Most salvage yards will ship and are pretty reasonable on price. Some even warranty the block for 30 days so you know you didn't get a dead one.

http://www.car-part.com/

Good luck with the repair.