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10-30-2013, 05:24 PM
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#31
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Senior Member
Join Date: Jun 2009
Posts: 2,509
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I bought a engine stethoscope and I isolated the noise to the front bottom of the engine. I pulled the timing crap out again and nothing, but I was a tooth off somehow. Put it back together and same shit. One of the many things I've read is a bad harmonic balancer. The timing marks match up perfect though.
__________________
93 GMC Typhoon: new money pit/PITA. Now GT3788R powered.
Boost, because sometimes atmospheric pressure just isn't enough.
"If it has tit's or tires, you can be pretty sure your going to have problems with them..."
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10-30-2013, 06:51 PM
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#32
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Senior Member
Join Date: Jun 2009
Posts: 2,509
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My harmonic balancer is taking a shit. The rubber is starting to come out the sides. I don't know how I never noticed that, especially since Ive pulled it off a few times now. Plus my serpentine belt has had a slight squeak to it, and now I know why. Before I buy a new one, anyone have a good one I can swap in really quick? The 4.0 and 2.5 use the same one, but it has to be a Tj.
__________________
93 GMC Typhoon: new money pit/PITA. Now GT3788R powered.
Boost, because sometimes atmospheric pressure just isn't enough.
"If it has tit's or tires, you can be pretty sure your going to have problems with them..."
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10-31-2013, 02:46 PM
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#33
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Fast & Filthy
Join Date: Jun 2008
Posts: 3,840
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Did you replace the timing chain?
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10-31-2013, 03:29 PM
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#34
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Senior Member
Join Date: Jun 2009
Posts: 2,509
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New chain and sprockets as well as a tensioner.
__________________
93 GMC Typhoon: new money pit/PITA. Now GT3788R powered.
Boost, because sometimes atmospheric pressure just isn't enough.
"If it has tit's or tires, you can be pretty sure your going to have problems with them..."
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10-31-2013, 04:55 PM
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#35
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Fast & Filthy
Join Date: Jun 2008
Posts: 3,840
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If you listen to the timing cover, does it sound like the noise is coming from there?
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10-31-2013, 09:11 PM
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#36
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Senior Member
Join Date: Jun 2009
Posts: 2,509
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I can hear it there but it's much louder on the bottom of the cover where the oil pan bolts to it.
__________________
93 GMC Typhoon: new money pit/PITA. Now GT3788R powered.
Boost, because sometimes atmospheric pressure just isn't enough.
"If it has tit's or tires, you can be pretty sure your going to have problems with them..."
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10-31-2013, 09:24 PM
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#37
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Fast & Filthy
Join Date: Jun 2008
Posts: 3,840
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To me from that video it sounds like a rod knock.
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10-31-2013, 10:56 PM
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#38
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Senior Member
Join Date: Jun 2009
Posts: 2,509
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That's what I thought too at first but the oil pan is metal shavings free. I'm going to get a new balancer tomorrow and see how that goes.
__________________
93 GMC Typhoon: new money pit/PITA. Now GT3788R powered.
Boost, because sometimes atmospheric pressure just isn't enough.
"If it has tit's or tires, you can be pretty sure your going to have problems with them..."
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11-01-2013, 05:40 PM
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#39
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Senior Member
Join Date: Jun 2009
Posts: 2,509
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Looks like Ill be pulling the motor sometime soon.
__________________
93 GMC Typhoon: new money pit/PITA. Now GT3788R powered.
Boost, because sometimes atmospheric pressure just isn't enough.
"If it has tit's or tires, you can be pretty sure your going to have problems with them..."
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11-07-2013, 10:53 PM
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#40
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Senior Member
Join Date: Jun 2009
Posts: 2,509
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Pulled the motor in the Jeep today, found all the rod bearings were shot. Crank was unharmed thankfully. The standard bearings were too loose, took some measurements and got the right ones. Plasti gauged everything and it's right. Should have the motor back in tomorrow. I don't understand it though, I tried the .010" the first time and they were way too tight, now they work perfect. Maybe they were the wrong size in the packages I got??
__________________
93 GMC Typhoon: new money pit/PITA. Now GT3788R powered.
Boost, because sometimes atmospheric pressure just isn't enough.
"If it has tit's or tires, you can be pretty sure your going to have problems with them..."
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