Ok, I just started up my new engine today for the first time, oil pressure guage said 45psi oil pressure but it appears there's water in the oil. The oil that came up through the heads looks a little runny so I pull the oil dipstick and the oil on there isn't real runny but has just a very very very light milky streak in it. I'm positive the block isn't cracked and I'm pretty sure the heads aren't cracked but not positive. Also at one point in filling up the radiator with water, I noticed that I left the hose to the thermostat housing undone and hanging right over the freaking head. It appeared some water got on the head but it didn't look like much. Is it possible more water than I thought got on there and just drained into the oil drain back holes?? The oil has to be changed after I break the cam in so do you think it'll be ok to run what's in there to break in the cam... as long as I'm holding 45 psi that is??? I really hope these heads aren't cracked.

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1986 Trans AM
305 TPI
Well over 200,000+ miles (speedo/odometer non-funtional! Odometer reads 142,000)
4 Wheel Discs
9 bolt Borg Warner Rear (2.77's....oh joy) :P
Completely Stock
Current Project: upgrade to a 355 TPI, 6" rods, 9.7:1 Compression, Stock TPI ported, 24#/hr LTI injectors (cleaned and flowmatched by Cruizin Performance), Hedman Shorty Headers, 3" exhaust with 80 series flowmaster, SBC 993 heads completely redone and modified for 1.6 RR, Comp Cams XE262-14 TPI Cam, Holley AFPR, TPIS airfoil, MSD wires, MSD 6-AL Ignition, Hypertech hot coil.

 

It possible that you may have lost more water than you think in the head when you spilled it out of the hose.

DO NOT run an engine with any water in it at all...water is the devil, and coolant is a corrosive, it eats the bearings.

I would change the oil before I went any further and try again, keeping an eye out for any more waa waa in the oil. If none comes back, you'll all good



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ASE Mechanic/Machinist/Smog Tech

1999 NBM Trans Am
1986 Chevy 3/4 ton pick up
1981 corvette
1995 Kawi ZX6R
and 2 POS commuters...

R.I.P. #3
"He can see air"

 

No unless you want excessive wear on your new motor get the contaminated oil out of there before you run it any more. Change it and the filter several times if you have to.

 

Well there's no coolant in the radiator, just water... so I'm hoping no damage has been done thus far. I'll drain the oil and change the oil and filter and see what happens. *fingers crossed*