I changed my harmonic dampener just in time *Pics & Video*

[gsxAWDdsm692]

Here's a video. Let me know what you think.

YouTube - DSM Engine squealing

 

[AlaskanDsm]

I have an engine squeak that comes and goes and is usully random or when the engine compartment gets kinda wet. I'm pretty sure its the AC belt tensioner but I will check my HB just to be safe!!

 

[scottd60]

Are my main bearings trashed ? My son's 92 Talon TSI AWD is making some nasty squealing noises. The crank shaft pulley appears to be moving in and out while running and rubbing against the plastic lower timing cover...you can actually see it moving in and out ? If not what else would cause the crank to walk ?

Thanks,
Scott

 

[kingjust]

Are my main bearings trashed ? My son's 92 Talon TSI AWD is making some nasty squealing noises. The crank shaft pulley appears to be moving in and out while running and rubbing against the plastic lower timing cover...you can actually see it moving in and out ? If not what else would cause the crank to walk ?

Thanks,
Scott

Sounds like your thrust bearings are ate up. I would stop driving the vehicle so you can pull the engine for a rebuild or possibly a new (used rebuilt) bottom end. There is only so much lateral movement that the crank should have, and if it's rubbing on the timing cover, that's to much. Just lay her down slowly, than "stroke" her up back to health

KJ

 

[scottd60]

The motor/rebuild is not that old ? Well...be purchased the car from a kid that ran out of money and interest. So not real sure how many miles was on it but we did get all the paper work for the rebuild...he did drive it around some but was mostly stock at the time...the heads and cam were done but we did the rest...see below. Would it need a complete bottom end rebuild or can we just replace the trust bearing...and can it be done in the car ?

Some ionfo on the car...I have had the oil pan off...needed some dents repaired and an new gasket. Replaced the trans (TRE Stage 2, clutch ACT 2600, ACT Street Light Flywheel. Also did all the typical upgrades...EVO Big 16G, EVO O2 housing, ported EVO exhaust manifold, Slowboy Racing FMIC, 600 injectors, Walbro fuel pump, 2nd gen MAF, Dejon intake, ported and polished heads w/S/S oversized valves and HKS cams, Inovative Wide Band O2, Apexi SAFC. Car made 300 hp to the wheels on 18 lb boost on AWD dyno at Extreme Motorsports in Odenton MD.


Thanks,
Scott

 

[meliketoball]

Use your info to fill out your profile so we can know what car you have and what set-ups you're running. As for the problem you have, instead of pulling the motor, I would drop the oil pan to look at everything and call it from there; Overhaul or not.

They say that the crank pulley or harmonic balancer tends to go bad, squeaks and wobble like how you said it does.

 

[scottd60]

Use your info to fill out your profile so we can know what car you have and what set-ups you're running. As for the problem you have, instead of pulling the motor, I would drop the oil pan to look at everything and call it from there; Overhaul or not.

They say that the crank pulley or harmonic balancer tends to go bad, squeaks and wobble like how you said it does.

Will do...kind of wondered about that...looking at it that was my 1st thought. It seems to be running ok but definitely sounds bad was afraid it was going to fly apart while I was listening to it.

updating profile now.

Thanks,
Scott

 

[1992awdlaser]

The pulley could be starting to seperate.

 

[scottd60]

The pulley could be starting to seperate.

we can only hope that is all it is...

 

[meliketoball]

Sounds like your problem. If you got a recorder, make a video of it in the action. But, if you don't want to turn your car on thats fine. But, I'd check out the harmonic balancer.

 

[scottd60]

Sounds like your problem. If you got a recorder, make a video of it in the action. But, if you don't want to turn your car on thats fine. But, I'd check out the harmonic balancer.

Hey he drove it around for a couple days before he told me...it started off a little bit on and off but when he came home last night I heard him coming down the street...I always here the motor but this time it was a constant squeal. The lower plastic timing cover is melted where the pulley rubber on it. Starting it up one more time for a minute probably isn't going to make that much of a difference at this point, I'll try and get a video tonight.

 

[SOADweskey]

I'm going to bet that if you take the Harmonic dampener off the crank it will come off in several pieces. Buy a new timing cover and check that no pieces of the one with the hole in it are in the timing belt area. And replace the pulley with an OEM mitsu one with one like Fluidampr or another high quality after market one. The auto parts store pulleys like the OEM ones haven't been known to last very long.

 

[scottd60]

Is the harmonic ballancer under the crankshaft pulley...I'm assuming that but the strange thing is there is no reference to it anywhere in my Haynes manual

Didn't get the video last night...maybe latter this week.

 

[SOADweskey]

Crankshaft pulley = Harmonic Dampener

Two names, one thing. The crankshaft pulley has a metal core that bolts to the crank and then a rubber center section to dampen vibration and then a metal outer ring for the belts to ride one. It is very common for the glue that holds the rubber to the metal to give up as our DSMs get older.

 

[Burnett03]

Also check the trany bolts.. Mine did the same thing when my tranny bolts were loose.. We sore it was walking, but it wasn't.

 

[scottd60]

Also check the trany bolts.. Mine did the same thing when my tranny bolts were loose.. We sore it was walking, but it wasn't.

Pretty sure that's not the case...I installed the new trany last winter and and personaly torqued all the bolts to spec but will look just to be sure. I'm really hoping it's the balancer going bad...I don't want to pull this thing apart again. If you watch the crank pulley while it's running you can see it move in and out close to a 1/4"

 

[scottd60]

Also in the bundle of receipts we got with the car when it was purchased it shows that it has 1G underdrive pulley $165. No other info just that, would that be the crank shaft pulley or one of the other pulleys ? Crank sahft pulley sure doesn't look like anything special...looks more stock to me.

 

[SOADweskey]

An underdrive pulley would replace the stock one. But if it looks stock maybe it isn't on there.
This is what a broken stock one looks like. There is supposed to be rubber holding these two pieces together.

You must be logged in to view this image or video.

 

[jemsoccer]

I can almost guarentee that its the harmonic balancer. My buddy bought my gst off me and called me up saying his harmonic balancer was wobling all around and that it sounded like things were smacking around. I checked it out 2 days ago and we noticed the rubber seperating the 2 metal discs (see above post) was starting to seperate and was missing chunks of rubber. Its about an $80 brand new.

To check see if this is the case, jack up the car, remove the driver's side tire, remove the 2 or 3 10 or 12mm bolts holding the plastic guard on, as well as the plastic pop in screws, (at least this was the case for the 2g's, not sure what the plastic covering is like for the 1g.) remove the platic piece out, and you'll have full view of the pulley, Then you'll need to loosen the alternator belt and powersteering and ac belts, romove the 4 bolts holding it on, somehow pry the pully off, and install the new one. Not that hard, and WAY less expensive than rebuilding or pulling the engine...

 

[scottd60]

An underdrive pulley would replace the stock one. But if it looks stock maybe it isn't on there.
This is what a broken stock one looks like. There is supposed to be rubber holding these two pieces together.

You must be logged in to view this image or video.

Here is a pic from when I was trying to figure out where to tap in the new turbo S/S oil line...part of the crank pulley on the right. This pic is from 10/06...not a recent one. I can see the rubber on it between the center and the pulley now.

 

[1992awdlaser]

Looks like a stock pulley to me.

 

[1gb719]

It definately sounds like a Harmonic balancer/crank pulley issue. If it were crank walk, or thrust bearings failing, the rpm would drop 3-400+ everytime the clutch pedal is pressed, making it difficult to downshift when coming to stops. (Ive had a couple crankwalking engines...)

I would definately recommend pulling the belts off and checking the pulley by hand, or if you want, you can remove the pulley and check it out as well. Also, it does look like a stock pulley.

Hope that helps!

 

[scottd60]

It definately sounds like a Harmonic balancer/crank pulley issue. If it were crank walk, or thrust bearings failing, the rpm would drop 3-400+ everytime the clutch pedal is pressed, making it difficult to downshift when coming to stops. (Ive had a couple crankwalking engines...)

I would definately recommend pulling the belts off and checking the pulley by hand, or if you want, you can remove the pulley and check it out as well. Also, it does look like a stock pulley.

Hope that helps!

Seems to be running fine other then the terible noise from the pulley rubbing on the timing case. But I'll check with my son and check it out myself just to be sure.

Thanks for all the help.
Scott

 

[1gb719]

No problem!

 

[echostats]

Thanks to Defiant, I found this thread. After putting on my AC belt and ALT belt last night I was going crazy because the ALT belt kept coming off. I had it tight enough and everything seemed fine... Long story short, there was a THUD and my crank pulley pretty much fell off. It didn't seem to screw anything up just glad I wasn't driving when it happened.

Is this a pretty easy job to replace it? Just pop the tire off, I imagine?

Here's a picture of mine:

 

[gsxAWDdsm692]

Yea, its easy. Just take your wheel off, take the shroud off, put the car in gear, loosen the belts, unbolt the 4 little bolts holding the pulley on, don't worry about the big one in the center, then it will just come right off.