Um ok. I couldn't believe it. I was asking one of my instructors in school about a bearing that I was taking out of my block and if JB weld could hold up in my engine. He was like, "Why what are you doing?". I explained to him that I was removing the balance shafts and I was worried about the way one of the bearings went back in. I couldn't hardly even get a straight answer without him arguing with me about how it was wrong to remove the balance shafts. He basically said that my engine will fall apart and be junk within a few thousand miles. He then asked me why I am doing it. I replied saying how it makes the engine more reliable (not having to worry about the B belt) and will slightly raise oil pressure etc etc etc.

Following that, he went on saying how the VFAQ is wrong on what it is saying. Doesn't the balance shafts just counter act the crank to help balance the engine? It does a few more things, but that is one thing it does. He thinks that those damn shafts run the engine. What about all the "other" 4 bangers out there that do not have balance shafts? hmmm... That makes me think. It just makes me mad when people question DSMers skill and knowledge when it comes to these cars.

So I just thought I would tell you guys that we are all driving around time bombs so be careful! :laugh:

Tell your teacher to go back to school! :laugh:

And then, if he gets his brain screwed in correctly, then tell him to buy a DSM and he'll understand. Tell him the 1.8L is a good starting point.

Originally posted by 90LaserTurbo89k
Tell your teacher to go back to school! :laugh:

And then, if he gets his brain screwed in correctly, then tell him to buy a DSM and he'll understand. Tell him the 1.8L is a good starting point.

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good idea! Funny thing is though, last week he thought that my low side fitting for my AC system was before the thermal expansion valave on my reciever drier I think he is more book smart then know what you are doing smart.

Show him a few sites of shops that build 4G63 engines and how nearly every one has "balance shaft removal" as part of the specs.

first thing i did, thats how i got the car the balance shaft belt went into the timming belt, blew the motor i come and buy car for $700

There's a reason they teach.

Inline 4-cylinder engines with conventional crankshaft spacing have fairly nasty secondary imbalances because you have two big crank and con rod ends going two different directions relative the engine axis- put weights in your hands and swing your arms straight out, that's kinda what's going on in a 4-cylinder crankcase. It's easy to snub with rubber mountings up to around 1.5 liters and moderate power output. However, as you get into larger engines -Mercedes pretty much gave up at 2.2 liters- these imbalances get quite uncomfortable. In..... '78? Mitsubishi developed the Silent Shaft motor with a pair of balancing shafts spinning at twice crank speed and positioned in the block to effectively cancel the secondary imbalance forces of the 4-cylinder. Porsche soon bought license to use them in the 944 engine.
The engine will run and last fine without them, but you'll have more vibration from it. You'll also have minor power gains from not driving those shafts, and there are some reliability gains from having that extra belt out of the equation.
Racers, of course, can't be concerned with a little discomfort. Sadly, racer girlfriends will bi*** about _everything_.

Oh, and JB Weld won't be happy if continuously exposed to hot engine oil. See if you can stake or pein that thing into place.

Why are you trying to weld anything in the engine block? If you're using JB weld to remove the balance shafts, you're doing something wrong.

In my limited time that my car was running again, I really didn't feel much/any difference between the shafts in or out. *shrug*

Defiant - Thanks for the post. JB weld is out of the question now.

cait sith - I thought you were suppose to weld the shaft to the front cover?







































j/k. I was going to take the balance bearings and scuff them up a bit where the bearing joins followed by some JB weld. Just to make them a bit stronger. I just decided to say screw it though. The bearing went in hard so I think it should be fine either way. Thanks

They are also called silent shafts.

So maybe you should tell him to shut up untill he knows the facts.

Originally posted by MNGSX
They are also called silent shafts.

So maybe you should tell him to shut up untill he knows the facts.

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True. But I can't tell my instructor to shut up

Those who cannot do teach.

If he cannot teach ask him if he knows how to say..

"do you want fries with that?"

Originally posted by MNGSX
Those who cannot do teach.

If he cannot teach ask him if he knows how to say..

"do you want fries with that?"

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:laugh:

That sucks, now you know that half the stuff that comes out of your teachers mouth could be wrong.

Originally posted by kpt4321
That sucks, now you know that half the stuff that comes out of your teachers mouth could be wrong.

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Yeah I know. He should be paying us to listen to it j/k, but hopefully this is the only time I have to teach him something.

when my auto teacher was talking about balance cshafts he explained that mostly v6's and not so much 4's really require a properly aligned balance shaft. And you can get kits to remove them from small 4's like my DSM.

Originally posted by DSMRevolution
Um ok. I couldn't believe it. I was asking one of my instructors in school about a bearing that I was taking out of my block and if JB weld could hold up in my engine. He was like, "Why what are you doing?". I explained to him that I was removing the balance shafts and I was worried about the way one of the bearings went back in. I couldn't hardly even get a straight answer without him arguing with me about how it was wrong to remove the balance shafts. He basically said that my engine will fall apart and be junk within a few thousand miles. He then asked me why I am doing it. I replied saying how it makes the engine more reliable (not having to worry about the B belt) and will slightly raise oil pressure etc etc etc.

Following that, he went on saying how the VFAQ is wrong on what it is saying. Doesn't the balance shafts just counter act the crank to help balance the engine? It does a few more things, but that is one thing it does. He thinks that those damn shafts run the engine. What about all the "other" 4 bangers out there that do not have balance shafts? hmmm... That makes me think. It just makes me mad when people question DSMers skill and knowledge when it comes to these cars.

So I just thought I would tell you guys that we are all driving around time bombs so be careful! :laugh:

Click to expand...

Most repair oriented only mechanics are complete idiots. they seriouly have no idea how a engine works.

I just left both Balance shafts in the motor and removed the belt. I honestly can't feel a difference. It could be because I have stock motor mounts though. If the car is wet I can see the water droplets vibrating but inside the car it honestly feels no more vibration than it did before. On a bone stock car you might feel the vibration but on a typical DSM with loud exhaust and stuff I dont think you will.

Originally posted by TwoLiterV8Eater
I just left both Balance shafts in the motor and removed the belt. I honestly can't feel a difference. It could be because I have stock motor mounts though. If the car is wet I can see the water droplets vibrating but inside the car it honestly feels no more vibration than it did before. On a bone stock car you might feel the vibration but on a typical DSM with loud exhaust and stuff I dont think you will.

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Sweet move man, now you have just one balance shaft turning. Can't get anymore ghetto than that.

Originally posted by turbo20lbs


Sweet move man, now you have just one balance shaft turning. Can't get anymore ghetto than that.

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:laugh: