Can someone confirm this is a drain plug?
09-07-2015, 07:56 AM
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Car: 87 IROC
Engine: L31 350
Transmission: T56
Axle/Gears: 4.10 D44
Re: Can someone confirm this is a drain plug?
That's the right place. Middle of the block (front to rear), just above the oil pan rail. The knock sensor is plugged into the same hole on the passenger side.
There may be enough accumulated gunk that nothing comes out when you remove the plug. If so, poke it with a screw driver and you should get flow.
FYI: Here's a good shot of the other side in this thread.
There may be enough accumulated gunk that nothing comes out when you remove the plug. If so, poke it with a screw driver and you should get flow.
FYI: Here's a good shot of the other side in this thread.
Last edited by MoJoe; 09-07-2015 at 07:57 AM. Reason: added picture/link
09-07-2015, 08:03 AM
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Re: Can someone confirm this is a drain plug?
That's the right place. Middle of the block (front to rear), just above the oil pan rail. The knock sensor is plugged into the same hole on the passenger side.
There may be enough accumulated gunk that nothing comes out when you remove the plug. If so, poke it with a screw driver and you should get flow.
FYI: Here's a good shot of the other side in this thread.
There may be enough accumulated gunk that nothing comes out when you remove the plug. If so, poke it with a screw driver and you should get flow.
FYI: Here's a good shot of the other side in this thread.
I seemed to have rounded it off while trying to remove it. Any suggestions on how to get it out?
09-07-2015, 09:39 AM
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Re: Can someone confirm this is a drain plug?
^^^ This ^^^
Might help to file it down to a nice sharp fresh-looking hex. An impact socket, to go along with using impact rather than a steady pull, is always better than a "chrome" one.
A drill is the next step.
Might help to file it down to a nice sharp fresh-looking hex. An impact socket, to go along with using impact rather than a steady pull, is always better than a "chrome" one.
A drill is the next step.
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09-07-2015, 10:18 AM
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09-07-2015, 11:06 AM
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Car: 87 IROC
Engine: L31 350
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Re: Can someone confirm this is a drain plug?
The two sides of the block are not connected (coolant-wise). The knock sensor drained that side of the block. The drivers side did not drain. But the drain/fill/drain method will dilute whatever is in there.
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