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Can someone help me understand the balance shaft eliminator theory?

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ChrisNelson

15+ Year Contributor
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Sep 16, 2005
Bemidji, Minnesota
I've seen a balance shaft eliminator kit on Ebay and some of the DSM performance sites, and I see it pop up on the forums every once in a while.

I can't really figure out why you would want to get rid of that system in the car, and also I can't find any detailed instructions on how involved it is to get it done.


I'm in the process of having my head rebuilt, and also replacing my timing belt system. So I guess now is the time to do it if ever.

Don't feel obliged to explain the whole thing if there is already some detailed documentation on balance shaft elimination. I guess I'm still too new to this stuff! :confused:

Thanks for all the help guys!

:dsm:
 
ChrisNelson said:
I've seen a balance shaft eliminator kit on Ebay and some of the DSM performance sites, and I see it pop up on the forums every once in a while.

I can't really figure out why you would want to get rid of that system in the car, and also I can't find any detailed instructions on how involved it is to get it done.


I'm in the process of having my head rebuilt, and also replacing my timing belt system. So I guess now is the time to do it if ever.

Don't feel obliged to explain the whole thing if there is already some detailed documentation on balance shaft elimination. I guess I'm still too new to this stuff! :confused:

Thanks for all the help guys!

:dsm:
http://www.vfaq.com/mods/balance-shafts.html

removes rotating mass from the engine and takes the balance belt out that has a tendancy to take out timing belts when it snaps. Read the above link. If you couldn't find that then you probably didn't acutally read the rules of this site. I'd hate to see you get banned as this board is a great resource when you REALLY need it. Lucky for you a nice guy responded. :thumb:

also:
http://members.shaw.ca/costall/1000Q/answers-terms.htm#whatisabalanceshaftbelt

thanks to whoever game me rep points for this post! :thumb:
 
Check vfaq.com for detailed instructions and reasons to do it. Mainly its less rotational mass and less stuff to break.
 
Thanks for your help guys. I appreciate it a lot and I certainly don't want to get banned from this site! i'll start searching the vfaq more often.

I've got a related question as to if I want to do this mod or not.

Now, my engine may be considered "high performance" (Check bio) I have 3 out of 4 of my motor/tranny mounts built with very stiff polyeurathane.

This increased stiffness in my mounts already affects the cars driveability a little, and I'm concerned that the combination of solid mounts and no balance shaft system might be a little more than I can bear, mostly because this car is my daily driver.

Do you forsee any problems that I might run into if I'm running this particular mod with solid mounts?

Thanks again for all the help! Your posts have been rated! :thumb:
 
The more solid mounts will make the vibration of the motor more noticable. Most of the people that remove the shafts say that they only notice it between 3000-4000rpms, and after a while don't even notice it anymore. I think the power you will free up will overcome the silly vibration of the motor. You can also have your motor balanced, but that is best done during an engine rebuild.
 
Sorry TUI, when I posted I guess we posted at about the same time and didn't realize you had posted that or I would have deleted my post.

But to the poster, I have the urethane mounts all around and no balance shafts and the vibration doesn't bother me a bit.
 
GILZTSIAWD said:
Sorry TUI, when I posted I guess we posted at about the same time and didn't realize you had posted that or I would have deleted my post.

But to the poster, I have the urethane mounts all around and no balance shafts and the vibration doesn't bother me a bit.
no problem, another DSM Brother helped in a time of need. I think it's better when more than one person say the same thing. It helps the poster feel like he is getting the right answer.
 
Well, I have been doing some research on how to get the lower timing cover off (This is my first DSM...) and I finally got it off and took a couple pictures of my timing area. The previous owner of my '95 GSX had heavily modified the car. Tell me, has the balance shaft elimination mod already been done on this car?

I guess I really don't know enough about this engine to even know what I'm looking at down there...

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shiftedtsi said:
balance shaft eliminator kit yes it frees up some horses yo probally wont feel but it though. kit is a good precaution in saving your timing built from making a very expensive problem plus its cheap


I literally didn't understand about 65% of what you just said... Punctuation and grammar are your friends!! :thumb:
 
The easiest way to tell is the shafts are gone is to drop the oil pan and look for them, the belt is not there but the cap or plug provided in the bs removal kit is not installed.
 
I'm sorry if what I just posted was out of line, but I believe that there is no problem with what I have typed.

Out of all of the car forums that I've ever been a part of, this one is the most strict ever! I keep on reading about how we need to use the spell check, don't abbreviate, and only post useful information.

The first 3 posts covered EVERYTHING that he "tried" to say and did it in a much more intelligible manner.

I asked a question, got a few answers, replied to the answers, and asked another question. Along comes a member with reading comprehension skills, and grammar/spelling skills of an 8 year old, and I'm supposed to give him a cookie?

I graciously got the info from a few helpful members, acknowledged it, and asked another question. I've done nothing wrong here. So, no need to jump down my throat.

I'm sorry for the long-winded defense. I am here for the same reasons as all of us. To get help and useful information from other informed DSM enthusiasts!
 
rgurleyjr81 said:
The easiest way to tell is the shafts are gone is to drop the oil pan and look for them, the belt is not there but the cap or plug provided in the bs removal kit is not installed.


Thanks for the input. I'll head out to the garage in the morning before work and snap a few underneath shots and try to post them asap. My oil pan is off right now so it won't be a problem! :thumb:
 
Well, I'm not even going to post pictures because I can see the balance shaft in the block. It's definitely still there. I guess since I've never heard of a balance shaft before, or ever worked on one of these motors, that I had no clue what to even look for. That blue "cap" type thing didn't look stock to me. But what do I know?

Thanks for all the help everyone! :dsm:
 
The blue thing is the tensioner for the balance shaft belt. Make sure to look and see if there are two of those shafts inside the motor. If on the back side of the black, towards the passenger compartment, it doesnt have a shaft, then they have already done the removal, they just chose to leave in the front shaft so that they do not have to replace those bearings. If you take out the shaft and don't change out the bearings or atleast turn them you will have very low if any oil pressure. If the back shaft (oil pump shaft) is still in, but that had no belt, then you would have much worst vibration. Since the oil pump shaft didnt have anything to counter against it, it makes the car shake worst and some say it can trigger false knock from the vibration. So this may actually make your car vibrate less if that oil pump shaft is still in there. Either get the stubby shaft or cut that one if its still in there and you will notice a world of difference. If its not there just do your timing belt and go on with it, I would not worry about removing the front shaft unless you just want to lose another 2-5 lbs. :thumb:
 
btw, the cap goes where the sprocket is on the top left of our pictures if you remove that shaft. You can either just leave that blue tensioner on there to plug the hole from leaking oil or find a shorter bolt and block it.
 
ChrisNelson said:
I asked a question, got a few answers, replied to the answers, and asked another question. Along comes a member with reading comprehension skills, and grammar/spelling skills of an 8 year old, and I'm supposed to give him a cookie?
QUOTE]

Its real easy to be tough and absolutely disrespectful to someone you will never come face to face with . then again if you did ever come in physical contact with me I believe it would not be a healthy decision. I will leave it at that you can continue to be a internet thug again . good luck with the install buddy
 
WTF

Dude, are you kidding me? This is a place that has rules, regulations, and guidelines, and I try my best to follow them because I expect the same from everyone else!

So, when somebody chimes in in a way that would make Larry the Cableguy proud, I don't have much sympathy for them.

I think you need to relax, and get off the steroids. Aside from your comments, this thread went off without a hitch. Oh, and this thread is already done with and over. You don't have to go trolling and dig it up just to start $h!T. OK?

if you did ever come in physical contact with me I believe it would not be a healthy decision. I will leave it at that

You know what's more PATHETIC than people making themselves out to be tough-guys and badasses on the internet? The fact that they are so dumb, that they think it actually intimidates another person. :toobad:
 
I'll beat both of you up.

And my mom can kick your mom's ass.
 
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