Balance shaft belt F'd up

[OG_Nocturnal]

So I'm doing a "belt overhaul" on my talon since I have to remove everything freaking thing to get to the balance shaft belt And I wanted to show yall what's wrong with the belt and get y'alls opinion on it.

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Here's a better pic, and the timing mark on the balance shaft was roughly °180 degrees off

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[pauleyman]

Better check that shaft and make sure the bearings are good. Does it even still spin?

 

[ist dwa]

Delete the BS and move on, they are NOTHING but problems. Port your oil filter housing to compensate for the extra oil pressure.

you're welcome.

 

[OG_Nocturnal]

Can it be deleted with the engine in the car?

 

[97egl]

Can it be deleted with the engine in the car?

Yes. You need to pull the oil pump so you can remove the rear balance shaft and replace it with a stub shaft. You won't be able to get the upper shaft out which is the one that's driven by the belt. Leaving it in and just leaving the belt off is an option.

If this is a daily or often driven on the street you may want to consider just replacing the belt if the shaft still rotates freely. You will pick up some vibration from eliminating them but experiences differ from person to person. Some notice hardly anything and others have noticed a big difference. If the upper shaft is locked up or has any sort of binding/resistance when turning it I'd suggest just eliminating them and replacing the balance shaft bearings later on down the road if you have the engine out.

 

[OG_Nocturnal]

It seems to be turning fine so I'm just gonna leave it how it is and replace the belt, I have an evo motor that in planning on building in the future, ill make sure to remove it from that one.

So I've read that marks on the bs can be aligned but it still be 180° out... how can I check and make sure this doesn't happen?

 

[97egl]

Cam gears have 2 marks on them and can be put 180 out but that's if you aren't paying attention to the dowel pins on the cams. As long as the dowel pins are on the top side of the cams and all the marks line up you will be good.

 

[OG_Nocturnal]

I was talking about the mark on the balance shaft gear.

Its says its lined up here but I read that it can still be out 180° but that post could have been wrong...

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[99dsmer4g63]

You need to pop the small Phillips head screw in the balance shaft bores and stick a small screwdriver in there to confirm it is in the proper orientation. You can also rotate the oil pump gear and the gear will fall left or right depending on which way the shaft is clocked at that time.

-Daniel

 

[OG_Nocturnal]

How will I know if its in the proper orientation? And which way should it fall if it's correct?

 

[97egl]

I was talking about the mark on the balance shaft gear.

Sorry yes the one you pictured is fine since the sprocket is bolted straight to the balance shaft. It is the oil pump gear that has to be timed properly. If 7 bolt is like a 6 bolt there is a screw you can remove from the back side of the block and then you can insert a 1/4" drive extension which will go into a hole in the balance shaft if it is lined up properly. If it is not rotate the sprocket once until the extension fall into the hole and the sprocket will no longer be able to rotate either direction and the mark should be lined up when this happens

How will I know if its in the proper orientation? And which way should it fall if it's correct?

This is just copied and pasted

rotate the mark on the oil pump sprocket until it is pointing straight up, and let it go. If the sprocket rotates towards (counterclockwise) the timing mark on the engine, the oil pump sprocket is aligned correctly. If it rotates away (clockwise) from the mark, spin the sprocket a full turn and test again, and it should properly rotate towards the mark now. Now line the mark on the sprocket back up with the mark on the engine.

 

[OG_Nocturnal]

ok thanks guys, this is my first timing belt job, and i wanna make sure everthing is right

 

[pauleyman]

The fall methos doesn't always work. On your first try I would use the bolt. Do you have an understanding of why the shaft falls etc?
This is all documented very easy to follow in the factory manual.

 

[OG_Nocturnal]

no not really , but i have a manual so i will look it up to help me better understand it.

 

[pauleyman]

no not really , but i have a manual so i will look it up to help me better understand it.

The balance shaft is just a weighted shaft. The oil pump side the problem is that it isnt a direct 1 to 1 like it is on the front shaft. For the shaft to be "in phase" the weight has to be on the bottom when all the marks line up. The oil pump gives it a gear ratio so even if the mark is lined up the weight isn't necessarily at the bottom. It lines up every 3 turns if memory serves. So, if it's lined up, weight at the bottom if you move the gear away from the mark and let go it tends to go back to the mark. That is the "fall method". It sometimes doesn't work because the friction in the seal keeps it from moving. The book method has you take out a bolt on the block and insert a screwdriver. The screwdriver only inserts when the weight is at the bottom because out of phase the weight on the shaft blocks the hole.

 

[Dericsh]

Yikes, good thing you caught it before it broke and shredded your timing belt too.

You might find the VFAQ useful. It’s been slow lately so patience is needed.

Visual Frequently Answered Questions - Home Page

 

[AWD-Tony]

If it’s your first time, use the bolt hole in the back. Here’s the quick and dirty

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[dwb]

If you need new b-belt, PM me. I've got a brand new Mitsu belt and pulley left over from my build.

 

[OG_Nocturnal]

If you need new b-belt, PM me. I've got a brand new Mitsu belt and pulley left over from my build.

Thanks bro, but I bought all new belts a few weeks ago.

 

[jesse12345]

Whenever your ready to do the balance shaft elimination do not buy the eBay ones. I made that mistake but caught it in time. Just trying to save you from a future headache.

 

[OG_Nocturnal]

Whenever your ready to do the balance shaft elimination do not buy the eBay ones. I made that mistake but caught it in time. Just trying to save you from a future headache.

Thanks bro, where do you recommend getting it from?

 

[dwb]

Thanks bro, where do you recommend getting it from?

Balance Shaft Eliminator Kit (with 2 OEM Bearings): Mitsubishi Eclipse 1990-1999 4G63T *SALE*

Comes with all OEM Mitsubishi parts: OEM Rear Balance Shaft Bearing - MD040597 OEM Front Balance Shaft Bearing - MD103722 OEM Balance Shaft Cap - MD092785 OEM Balance Shaft Stub - MD098626

www.extremepsi.com

 

[OG_Nocturnal]

Ok the marks are almost dead on but not perfect, what do yall think?

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[19Eclipse90]

Looks fine to me.