i bought a b20b for my teg after my ls threw a rod and we just got it put in and and when we fired it up it had very slight rod knock. you could barely hear it. so i cut it right off, and replaced the bearings. then fired it up again and still has knock. any suggestions?

 

are the pistons aftermarket my brothers civic did the same because he has after market pistons and also barley heard it and went away.

 

no its completly stock. when i pulled the pan. the crank wasnt messed up or anything. i dont think that it needs to be turned. has anyone ran oversized bearings instead of standard?

 

In order to run oversized bearings, you're going to need to have the crank turned and resurfaced. Are you sure you used the correct bearings? (Brown, red, yellow, pink, etc)

 

im pretty sure. i used standard sized bearings. im just trying to figure out why its still knocking, cause everthing else looks fine.

 

did you check the clearances when you were rebuilding the motor you should have usually if the clearance is bad the motor knocks right when you turn it on.

 

i didnt rebuild the motor, the ls threw a rod and i bought the b20 bone stock and put it in. so its all stock is a b20b

 

sorry my bad but if there is knocking then it will probably will need a rebuild.

 

well, you'd need to put in the right color bearings in the first place... you should check into that.

 

yea i pulled the pan again tonite and when you pull on piston number 2 you can see a little movement. but its just on that one rod. the crank is not scared up or anything. and ill have to look into the color bearings. does anybody know what color is for a 97 b20b? thanks guys

 

if that one piston moves back and forth like that then the bearings are bad and i have never heard of color bearings what do they do???