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How does my exhaust smell
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My car is a 94 automatic with 208k on the original long block. I have a SP67GTQ turbo kit and built transmission with 3800 stall. The tranny shifts hard all the time. My car developed a rattle in the flexplate (plate that connects the crankshaft to the torque converter) about 1000 miles ago. At about the same time, the front main seal let go. I had them both repaired together at the same shop. We though the problem with the flexplate was related to not having the bolts torqued correct when the built tranny was installed. I spoke with the transmission shop that did the tranny at 205k and they said they torqued everything down correctly.

About 500 miles later the front main seal let go again. I took it back to the shop, and they repair it again. The seal had popped off. The mechanic then told me that he thinks the crankshaft is moving back and forth, or vibrating strangely (is that crankwalk?), and that is probably the cause of the seal blowing, and caused the problems with the flexplate from before. He said that I should keep an eye on it, and that more than likely I would have to replace the crankshaft (basically the shortblock).

Today, about 500 miles later, the flexplate is rattling again, and the rear main seal is leaking. I haven't done anything as of yet. My relative mods are listed in my sig.

My question is, what do you guys think the problem is. Could the crankshaft be the problem, based on mods, and mileage. Or is this shop guy trying to jerk me. I am really close to the end of the line with this car. I have linked to some pictures of the rear of the crankshaft, and the problems we say when the rattle happened the first time. You can see in these pictures how the bolts wobble and enlarged the holes.

http://home.comcast.net/~ninetyninepercentile/TCP/flexplate.jpg
http://home.comcast.net/~ninetyninepercentile/TCP/spacer.jpg
http://home.comcast.net/~ninetyninepercentile/TCP/tq.jpg
http://home.comcast.net/~ninetyninepercentile/TCP/rearcrank.jpg
 

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man i would say it was crank walk

becasue the way the bolts are hitting the tq converter

i have seen poeple check it buy puting a guage in the crank shaft and pulling the pulley with a screw driver and taping it back in.

dont know what guage it was all i know it that it has a magnetic base and a pin that comes out of the guage and that pin is put on the crank and then is lined up to zero and when its pushed in and out the needle moves

i hope this helps
 
L

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I would definately lean towards crank walk as well, an examination of the internals of the oil filter might help you understand whats going on inside the motor
 

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More than likely the thrust bearings are toast, causing it to crankwalk, seems pretty common now unfortuanetely. You might be able to drop the lower oil pan, and take a look at the thrust bearings w/out yanking the motor for now. That is where I would start.

Tim
 

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Inline for the win
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I would just think it time to rebuild it since it has cross the finish line twice(100k miles).

You definately got your money out of that engine.

DP.
 
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