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Anthony
Anthony, ASE Certified Technician
Category: Mitsubishi
Satisfied Customers: 11750
Experience:  ASE Master Automobile Technician with over 20 years exp. in this field.
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If i have to change the connecting rodbearings in a 99

Customer Question

If i have to change the connecting rodbearings in a 99 diamante should i replace the crankshaft too?
Submitted: 1 year ago.
Category: Mitsubishi
Expert:  Virtual Wrench replied 1 year ago.

Hello,

It's a VERY good idea to. Especially if one of them has spun because it raises the metal on the crank journal for the connecting rod and the new bearing will not last long at all!

LJ

Expert:  Anthony replied 1 year ago.

Hello!

What happened to the engine exactly?

Customer: replied 1 year ago.
Has a lil knock from bottom end
Expert:  Anthony replied 1 year ago.

Did you remove the bearing caps yet?

Customer: replied 1 year ago.
I haven't even put oil pan off yet I'm not much of a mechanic but just trying to get an idea I think I want to do this on my own
Customer: replied 1 year ago.
what I need Maine rod bearings are connecting rod bearings?
Customer: replied 1 year ago.
Main or connecting rod bearings sorry
Expert:  Anthony replied 1 year ago.

Hi!

Ok, here's how it goes concerning the bottom end. If any bearing spun, you need to change that connecting rod, bearing and crankshaft. If all the bearings are only worn to the copper then you can do just bearings.

Customer: replied 1 year ago.
What does a spun bearing look like? Any pics?
Expert:  Anthony replied 1 year ago.

Yes, heres what one looks like that spun:

Customer: replied 1 year ago.
Can I see this from just dropping the oil pan is this on the top of the engine?
Expert:  Anthony replied 1 year ago.

You have to remove the oil pan then take each rod bearing cap off and look. They are in the pan and have do be done from the bottom.

Customer: replied 1 year ago.
I will jack ip the car and let yoh know
Expert:  Anthony replied 1 year ago.

It s a big job to get the oil pan off, you have to get the lower and upper off to get at all the bearings and remove the exhaust. Heres the pictures of what to remove to get the pans off:

Customer: replied 1 year ago.
Thats some work alright. Ill have to do it
Expert:  Anthony replied 1 year ago.

Hi!

Just wanted you to see what you were going to have to do so you can be prepared.

Customer: replied 1 year ago.
Gotta get Jack stands and torque wrench
Expert:  Anthony replied 1 year ago.

Yes jack stands for sure. Torque wrench for assembling it but you need to inspect 1 rod at a time and do not mix up the caps or put them back backwards. They only go one way on each rod so mark them.