ok i went to the track on sat. ran the car 4 times and on the forth time i blew my cerp. belt off i didnt realize it till i was going to pull back in line and i realized my power steering was out. I pulled the car on the trailor and then my radiator over flowed thats when i realized my car over heated the temp gauge on the cluster read 250 so i wet home put a new belt and added fluid. now the motor is making a knocking noise but spraticly not constantly its on the passenger side. It will do it every 20 sec or so then maybe 40 sec's later, its just not consistant. I pulled my plugs last night and they looked fine aclually pretty damn nice. I then pulled the rockers and the push rods (on pass side) and they are fine. I am doing a compression test this evening. What is next in line to check??? what could this be maybe a valve spring?? What do you all think. Any advice would be greatly appreciated
O i have a 6.0 iron block with lunati pro billet rods, crank dimond nitrous pistons and ls1 stage 2 heads
Thanks Richard

 

Could be a spring or it could be a loose TC bolt witch can happen time to time.

 

TC what is this, any other possibilities??

 

is there a tool to check the springs??? if so what is it called and where can i get one??
Thanks Richard

 

spring u can check by hand and by looking at them. TC=Torque Converter.

 

ok i did a compression test and 3 cylinders read 210 and the 3rd was 180 what is next what should i check now??

 

to be on the safe side i would check my oil for coolant

 

what if there is coolant?? the knock is comming from the top not the bottom sounds like valve train noise

 

If there's oil in the coolant, that's usually a head gasket.


-Mike

 

i ran my car at the track and heard a knocking my noise came out to be a slightly loosened rocker arm from turnign hard rpm's...fixed by simply tightening it..unless you bent the pushrod..

 

?? o coolant in the oil i guess if it were a ring then my car would smoke right???

 

if it were a pistn ring you mean?...if tahts what you man then you car wouldnt even run the compression would drop and you car wont start..i doubt its a ring..sounds liek valvetrain to me.

 

well thats good news i can deal with pulling a head or both but pulling the motor would have pissed me off

 

it sounds like the noise stopped now BUT i sprayed water on my headder tubes 3 would not even make contact would sizzle off so quick and the other will just burn off so one cylinder is colder than the others much colder i just put brand new plugs today

 

hmm....usually if you blow a head gasket the car smokes bluish white. i know my 280z looked like a damn smokestack when it went, and it had a minor headgasket failure.

 

yea i know what you mean i think it has something to do with the valves?????

 

really sparatic exhaust leak??

Could really be anything.. collapsed lifter

 

what would cause the header tube on that cylinder to be colder than the others??