low oil then knock?

[PressurizedDSM]

well i guess i did it this time...my friend took my car out to race a mustang right...pulls next to the stang.they start pulling and my friend lets off im like whats goin on here? so my friend comes back and hes complaining of low oil(no knock).im saying to myself i cant believe this motor didnt make it over 2000 miles but i get oil put it in and start it(KNOCK) idles fine but knock only when reved? can anyone please help this stupid newbie

 

[robbo185]

yea you ran your car low on oil and now its knocking.
Try adding more and see if it goes away but you probobly will have to tear down the bottom end and find out what failed.

 

[absolute_DSM]

my friend took my car out

Problem #1

to race a mustang right...pulls next to the stang.

Problem #2 (better have been on a track, although it doesnt sound like it. )

hes complaining of low oil

Problem #3

im saying to myself i cant believe this motor didnt make it over 2000 miles

Sounds like your own fault and a spun bearing.

 

[97 gst turbooo]

Racing + low oil = not smart.
add some oil and maybe some

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hopefully you didnt do much damage, might be changing some bearings.

 

[PressurizedDSM]

im trying to look on the brighter side of this can it be fixed just if i spun the bearing? i know i was stupid i just want the help and knowledge so i wont do it again

 

[PressurizedDSM]

one more thing when i tried to turn the cams they would go only so far then stop? and can anyone tell me whats the torque specs on the cam caps? thanks alot guys i love this website

 

[BUCK]

one more thing when i tried to turn the cams they would go only so far then stop?

uhhh... what EXACTLY are you trying to do ?

 

[PressurizedDSM]

i was trying to see if my valves hit the pistons.but when i turn the cams either way it stops about 90 degrees from where i started

 

[crensinivon]

Did you time it wrong or did your timing belt jump a tooth? It sounds more like bottom end knocking to me. Also did you pull out the balance shafts and forget to turn the bearings? Without being able to hear the car we can't tell you much. Just drop the pan and pull the caps and replace the bearings you don't have to pull the engine to do it unless the crank has grind marks in it hopefully you caught it in time.

 

[PressurizedDSM]

i hope i caught it in time..i checked the head and no grinding of the cams and everything seems to be ok. but the oil thats left on the head smells burnt up

 

[PressurizedDSM]

i hope i caught it in time..i checked the head and no grinding of the cams and everything seems to be ok. but the oil thats left on the head smells burnt up

 

[97GSTAUTO]

Racing + low oil = not smart.
add some oil and maybe some

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hopefully you didnt do much damage, might be changing some bearings.

Doesnt engine restorer = Turbo Killer??

 

[BUCK]

i was trying to see if my valves hit the pistons.but when i turn the cams either way it stops about 90 degrees from where i started

SO..... is the Timing Belt still on? -

 

[hatch]

When my oil pump went out it did exactly what you are describing. It would knock only if I revved the engine. If its a muffled sounding knock then you probably spun a bearing like mine did. If it was piston to head contact you would know it, as its usually louder and more of a metal on metal sound, if that makes any sense.

 

[PressurizedDSM]

my timing belt was on until my idiot friend cut it off on me.the knock is more of like a clank clank sound..my cam lobes turned blue from the heat but only on the exhaust side...if i spun a bearing how would it start to clank? my motor is freshly rebuilt with 2000 miles on it.i shouldnt be even allowed to own this monster...thanks for all the advise my oil pan is comming down today and ill find the damage thats done,,

 

[hatch]

Spun bearing usually means that the rod is allowed to move around on the crank causing the knocking noise. Mine was ate up, there wasn't much bearing left. Dropping the oil pan is a good idea, but you might be able to just drain the oil and see if there is any metal shavings in it.

 

[BUCK]

my timing belt was on until my idiot friend cut it off on me.the knock is more of like a clank clank sound..my cam lobes turned blue from the heat but only on the exhaust side...if i spun a bearing how would it start to clank? my motor is freshly rebuilt with 2000 miles on it.i shouldnt be even allowed to own this monster...thanks for all the advise my oil pan is comming down today and ill find the damage thats done,,

Shoot us some pix - try & NOT shoot your "friend"

 

[PressurizedDSM]

ok pulled the pan..no shavings.2 rods move and balance shaft is tight...one person i was talkin to said i have to pull the motor and do machine work..can i just throw new bearings in or new pistons rods etc...can i please have a list of what to do i want my car backkk

 

[PressurizedDSM]

nevermind rod bearing is so bad the journal is scratched to hell the one piston cant even go up 3 inches..the 1 center piston is able to be pushed up with my pinky and the other center goes up and makes a sssssssss sound R.I.P 6 BOLT

 

[tqmx1]

Now it's time to beat tour buddy to DEATH

 

[hatch]

Yep, poor poor 6-bolt. But now you get to rebuild bigger and better.

 

[absolute_DSM]

nevermind rod bearing is so bad the journal is scratched to hell the one piston cant even go up 3 inches..the 1 center piston is able to be pushed up with my pinky and the other center goes up and makes a sssssssss sound R.I.P 6 BOLT

Ouch, better call mommy for an early allowance.

 

[PressurizedDSM]

i just wanna drop in a short block for now drive that then build my block im hoping for atleast 500 awhp...anyone have a running shortblock laying around?

 

[PressurizedDSM]

looks like my downtime will be very minimal...500 for a shortblock from dsm graveyard...then im getting my head redone better valves springs etc...new 16g.injectors the works thanks for all the help guys

 

[meliketoball]

It's funny how you're not mad at your friend. And I wonder if you friend said sorry. PS, your friend is a dumb ass.