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Bent connecting rod???


Andre the Giant
01-31-2002, 10:35 AM
OK fellow gearheads... here's the scenario. My car, ('92 TBird 3.8L V-6) had a blown head gasket (it blew LOTS of antifreeze out the tailpipe). I took the heads off and found the problem at the #4 cylinder. (Driverside, front) Upon closer inspection, I found that the #4 piston comes within 3 mm of the top of the cylinder bore. All the other pistons travel to the TOP of the cylinder bore. I am assuming that some uncompressable antifreeze in the #4 cylinder during the compression stroke may have caused the connecting rod to bend. I know it's not broken because it still functions. I would just remove the oil pan and look at it, but the fine folks at Ford made it virtually impossible to drop the pan without taking a huge chunk of the unibody frame off first.

Question #1... do ya think the rod is bent???

Question #2... do I need to fix it??? (I would assume the answer is a big YES)

Question #3... do you think Ford SUCKS?!?

Tell me what you think!

Thanks

enginerd
01-31-2002, 11:30 AM
I think you are on target with your assesments. I've seen similar occurences where an engine hydro-locks and bends a connecting rod. Feel lucky that not enough anti-freeze leaked into the combustion chamber to cause the engine to completely quit. I've seen engines hydro-lock and blow the rod out the opposite side of the engine. I would say to find an inexpensive used or re-built engine and replace it. Lord only knows what else was knocked out of alignment in the process.

texan
01-31-2002, 06:31 PM
Agreed, and if there was enough pressure to do that in the cylinder, you can damn well bet there's at least bearing damage on that rod journal. I don't think Ford sucks, I just think that in some applications you have to pull the motor from the engine bay to perform serious service on it.

Someguy
01-31-2002, 10:39 PM
They do tend to do block the oil pans in for some reason, yet another reason for that tubular K-member. :)

GTStang
02-01-2002, 06:03 AM
Yea def invest in a tubular K-member. Allows you to get to the oil pan without having to lift the engine up! Well worth it!

Tireburner
02-01-2002, 08:19 AM
Question #1... do ya think the rod is bent???

Probably

Question #2... do I need to fix it??? (I would assume the answer is a big YES)

Definately

Question #3... do you think Ford SUCKS?!?

No

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