Hello 951, Good-bye 951.
03-31-2009, 12:52 AM
#2
That large hole in the front should be there. It's for coolant circulation. See this pic (courtesy of theedge)
That large hunk of aluminum attached to the immediate front of that hole is the waterpump.
If the bottom end is fine, all you should need is a head rebuild and new headgasket. (at least thats what it looks like from here)
That large hunk of aluminum attached to the immediate front of that hole is the waterpump.
If the bottom end is fine, all you should need is a head rebuild and new headgasket. (at least thats what it looks like from here)
03-31-2009, 12:55 AM
#3
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03-31-2009, 01:03 AM
#4
It looks like it was knocked out, not cut. If so, what would explain cranking the motor over and having coolant flow out of the intake? The headgasket looks brand new.If you're having coolant mixing issues, I'd maybe look at the oil filter housing on the side of the block. There are some o-rings in there on a piece that could cause oil and coolant to mix. That's a very common problem on the NA cars (their is actually a small radiator style element in there that coolant flows thru to cool oil). On turbo cars the oil cooler was moved to an external position but the block still has a small metal piece with two o-rings on it that allows the oil to pass to the lines.
03-31-2009, 01:25 AM
#7
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Well, now I feel like an idiot. 
It's not so much about oil mixing with coolant, it's more so about oil getting into the cylinders or into the intake manifold. When I originally cranked it over (all IC pipes unplugged and etc), I could crank it a couple of times, open the throttle body, and have coolant pour out. Where could this be happening?
I really appreciate the help. There might be hope after all.
It's not so much about oil mixing with coolant, it's more so about oil getting into the cylinders or into the intake manifold. When I originally cranked it over (all IC pipes unplugged and etc), I could crank it a couple of times, open the throttle body, and have coolant pour out. Where could this be happening?
I really appreciate the help. There might be hope after all.
Thats why I drive em' and don't wrench on em'.
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03-31-2009, 02:34 AM
#8
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Good news is you are in the right place now. Stick around and you can have that steal of a car back on the road in no time. And going the way you are is the greatest adventure of all...or go LSX that is an adventure too....albeit a bit off the Porsche path 
03-31-2009, 10:29 AM
#10
Three Wheelin'
That engine overheated BADLY. Thats the only time Ive seen those valves stuck open.
Just make sure to take the head to a machine shop to resurface it before you slap it together.
Good Luck and enjoy, ask a lot of questions while you have the head off of the car
Just make sure to take the head to a machine shop to resurface it before you slap it together.
Good Luck and enjoy, ask a lot of questions while you have the head off of the car
03-31-2009, 10:42 AM
#11
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03-31-2009, 11:01 AM
#12
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[hijack]Testy, dude, where've you been?![/hijack]
03-31-2009, 11:29 AM
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Hmmm, based on those pictures it looks like #1 was the one where the leak started (slightly steam cleaned piston). Did you check cylinder walls for cracks? It's possible the head is cracked or very warped (from overheating) and allowed coolant to pass into the cylinders.
As far as the valves go, I'm guessing the timing belt is either missing some teeth, was loose and skipped a few teeth, or a belt roller is damaged and allowed the valve to piston contact. Once coolant started leaking into the cylinder, each up stroke of the motor allowed coolant to pass up beyond the intake valve and into the intake.......which redistributed the water across all four on the down stroke. It's possible the head lifted a bit when the valves hit and allowed coolant to pass but it's pretty unlikely.
Check the cylinder walls for cracks (piston at bottom), make sure the deck is flat (I've seen a few of these block's cylinders weep), and have the head pressure tested and rebuilt. Replace the timing belt and triple check and/or replace all the rollers. Also be sure that the key ways on the cam and crank did not shear off and are still there, and the cam spins freeley in the cam tower.
As far as the valves go, I'm guessing the timing belt is either missing some teeth, was loose and skipped a few teeth, or a belt roller is damaged and allowed the valve to piston contact. Once coolant started leaking into the cylinder, each up stroke of the motor allowed coolant to pass up beyond the intake valve and into the intake.......which redistributed the water across all four on the down stroke. It's possible the head lifted a bit when the valves hit and allowed coolant to pass but it's pretty unlikely.
Check the cylinder walls for cracks (piston at bottom), make sure the deck is flat (I've seen a few of these block's cylinders weep), and have the head pressure tested and rebuilt. Replace the timing belt and triple check and/or replace all the rollers. Also be sure that the key ways on the cam and crank did not shear off and are still there, and the cam spins freeley in the cam tower.
Last edited by Jeremy Himsel; 03-31-2009 at 02:26 PM.
03-31-2009, 01:18 PM
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Yeah man. Don't give up that quick you have a lot of people here to help you. If you do change your mind send me pm. I have been looking for another 951 to buy.