cjg454ss

iTrader: (27)

checked the oil in the pan due to a slight knock after running at the track and the magnet had metal on it. enough to slow down the oil draining almost totally. the motor is a 365cu, 6.0 heads, weisco pistons 8:1 comp, carillo rods, ls1 crank. the motor has a couple passes on it at 11psi of boost. on the second pass off the t-brake the knock started. anyone have something like this happen? was the machine shop off? i built everything on the car except the short block. i was also running mobile 1 10w30, and a quart of lucas oil stabilizer. any help is appreciated.

thanks

bad2dbone

iTrader: (37)

more than likely the machine shop more than likely took a chunk of piston or rod

one fast zo6

iTrader: (490)

well a lot of RPM,and your not useing a cross drilled crank, the cam gets
oiled frist in a ls1.

5.3LJimmy

iTrader: (10)

The lucas oil stabilizer was a bad idea. You can't do it now because the engine bearings are trashed, but there is a way to prove it. Run your car to redline with the oil stabilizer then shut it down and drain the oil. The oil will be full of air bubbles. These prevent the oil from forming a boundary layer between the moving parts and allow the bearings to run against the crank. This stuff is very bad for gen 3 engines. I know three people personally that put this in their cars and developed a knock shortly thereafter.

5.3LJimmy

iTrader: (10)

Here is a good link testing the oil stabilizer: http://www.bobistheoilguy.com/images/lucas/lucas.htm

elias_799

iTrader: (8)

^^^ thanks for the info, i was really interested if that **** has any side affects.

cjg454ss

iTrader: (27)

f*ck, i had no idea. whats the best oil to run, i didnt even get a chance to turn up the boost. heres another question, last night started it cold and had 60psi still. 40-45 psi once hot. any idea.

bjamick

iTrader: (31)

Really i've heard some of the best oil is Rotella synthetic. I've really been thinking of running it in my newly built motor.

cjg454ss

iTrader: (27)

well mine went toast quick, no detonation either.

elias_799

iTrader: (8)

i prefer royal purple, but that is just personal preference.

01ssreda4

iTrader: (96)

seems to be good info, and a very trick little testing device.....