loud knocking sound

[danny_l_2005]

ok i just finished installing my 14b on my 2g. Before i even installed it my t 25 went out on me too much shaft play. While it still had shaft play my oil pressure went from normal to low. But everything worked good except the turbo which made the car smoke bad after a month with my oil pressure low. Ok just finish installing the 14b its been a month since I took the oil out so the car was without oil and coolant for a month. pressure is still low at idle the pressure is just barely on top of the line low. going 50 its in between low and medium, at wot which i did for a several seconds barely went to medium. Before the oil pressure at wot was like even a little bit higher than 3/4 now i don't know why its been lower than normal. Ok today after priming the turbo 2 15 sec crank to build oil pressure, I took it for a test drive (don't have wg actuator yet). I would go to more than 2k rpm and i would here loud knocking sound i think i came from my lifters it was kinda loud. Loud enough to hear it going 50. I never had this sound before and like i said my motor had no oil or coolant for a month. My new oil is at full capacity on the pan. Does any one know why i can hear those loud knocking sound? Oil starvation? need new oil pump?

 

[Arod]

Crank Grinding = Bad

why?

 

[boostedinaz]

why?

Most crank are nitrated, all DSM are. When this is done it only goes so deep into the crank. When you grind a crank it gets rid of most or all of the surface that was nitrated, so now the surface of the crank will not be as hard and will be more likely to wear alot faster.

If the crank is done get a new one.

 

[Arod]

I've never heard that before but thats good to know.

 

[danny_l_2005]

ok so i just found out that it was my rod bearing from cylinder 1. its moves about 1/4 inch or less but the others don't move at all. Would that amount of play mess up my crank, is it still salvagable. I want to keep my motor and don't want to get another one. If i get a rebuild kit ill be getting like new pistons and i don't actually think i need them. Can i just take it to my local auto/machine shop and have them put new bearing that would be maybe .10 or .20 over and have them fix my crank. what is your advice?

 

[boostedinaz]

ok so i just found out that it was my rod bearing from cylinder 1. its moves about 1/4 inch or less but the others don't move at all. Would that amount of play mess up my crank, is it still salvagable. I want to keep my motor and don't want to get another one. If i get a rebuild kit ill be getting like new pistons and i don't actually think i need them. Can i just take it to my local auto/machine shop and have them put new bearing that would be maybe .10 or .20 over and have them fix my crank. what is your advice?

Here is the reality of the situation. To fix this is going to be expensive. You motor is cashed and need to be rebuilt. An easy fix will just cost more money on the long run and you waste a ton of time. Sorry to break it to you but start saving.

 

[Defiant]

Would that amount of play mess up my crank,

Yes.

is it still salvagable.

No. 2G cranks are not serviceable.