About to finish thing belt, opinions appreciated

[juntjoo]

...as u can see by the pics. Does this mean the the exhaust sprocket is installed a little off or ...

Ultimately, do I want both cams in the same rested position like in the pic with both sets of cams pointed upwards before installing belt, BUT exhaust sprocket timing mark off a bit counter clockwise as shown or....

Do I install the belt while timing marks are aligned, BUT, exhaust cam slightly over CLOCKWISE, but then once belt tension applied the exhaust (and exhaust only?) sprocket will adjust back counter clockwise a bit putting cam shafts back in sync?

Thanks

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[billyw88]

I just installed a timing belt on my 92 eclipse , the exhaust cam timing mark has to be level with the head. Then the intake has to be slightly higher so when u put the timing belt on u have to get a pull handle and turn the intake cam to match the exhaust cam timing mark while u are putting the belt on

 

[juntjoo]

I just installed a timing belt on my 92 eclipse , the exhaust cam timing mark has to be level with the head. Then the intake has to be slightly higher so when u put the timing belt on u have to get a pull handle and turn the intake cam to match the exhaust cam timing mark while u are putting the belt on

Do u understand my situation tho? When my cam shafts are rested the intake mark is correctly at 9 o' clock but the exhaust is at like 2:45 rather than 3 o' clock.

So if I were to do as u say and put my exhaust mark at 3, the cam shaft won't be in a rested position -it would have tension on the cams (from the springs)

I'm confused. I'm not quite getting your procedure. Sounds like what I was wondering how it might have to be done.
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[juntjoo]

When all is said and done, do the timing marks have to line up, or do the cam shafts have to be in sync? Because with my car apparently you can only have one scenario.

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[Calan]

Get one of these to lock the gears in place; it will pay for itself over and over.

If you don't want to do that, position both gears so that the marks align perfectly and are parallel to the head, and then use some large zip ties to lock the belt over the tops of both gears. Do the intake first, and then hold the exhaust gear in place while you zip tie the belt to it. Then time the motor as usual.

 

[juntjoo]

Get one of these to lock the gears in place; it will pay for itself over and over.

If you don't want to do that, position both gears so that the marks align perfectly and are parallel to the head, and then use some large zip ties to lock the belt over the tops of both gears. Do the intake first, and then hold the exhaust gear in place while you zip tie the belt to it. Then time the motor as usual.

Do u know if the cam shafts have to be in sync after the belt is installed?

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[Calan]

Do u know if the cam shafts have to be in sync after the belt is installed?

I have no idea why you are asking that question.

The whole purpose of the timing belt and cam gears is to synchronize the valve opening and closing events to the crankshaft rotation (i.e. piston position in the cylinder). So of course they have to "be in sync".

 

[juntjoo]

When my cam shafts are in sync, both cams above #1 piston pointed upwards in rested position as shown in pic, the timing marks on sprockets are not in sync, as shown in pic.

Question: when belt is installed must cams be in sync in rested position as shown, OR must timing marks match up, UNlike what is shown in pic? Thanks

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[Lofty]

Line up the marks.


Please.


Timing Belt VFAQ (Timing Belt TSB - ENHANCED)

View that.

Marks are there to be lined up.

Dowels pointed NORTH. Dowels, on the cams... Timing marks lined up...


And without a belt on, spring tension in the head will pull the cams gears apart like that.

Please view the link. Please...

 

[bryanwheat]

Why did you post 2 threads that are the same thing?

 

[newTSIguy]

Yes every thing has to line up perfectly when belt is instaled. And yes the exhaust cam will not be in the "rested" position and it will want to jump back to "2:45". you need to bring it to 3:00, get the belt over the cam gears and clamp or ziptie the belt to each cam gear to hold the gears in time with each other(without damagingthe belt). Then you can start working the belt down to the oil pump sproket and crankshaft sproket.

 

[bryanwheat]

I use these

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. Line up the crank sprocket oil pump (correctly), the rear cam gear, and get the front close. keep the tensioner pulley loose with the tensioner bolted in place and the pin installed. From there you can install the belt, keep the slack in the tensioner side of the belt. From there install the clips towards the bottom of the gears to hold the belt. Being that you have the tensioner pulley free there will be enough room to adjust the cam gears to where you need them. From there you can turn the cam gear a tooth at a time until it is lined up, than adjust your tensioner pulley (leave the pin installed) and turn the engine over a until the marks like up again to verify that it is in time. From there you can set the tension with the pulley to where you can just pull the pin out and reinstall it after it has sat for ten minutes.

 

[juntjoo]

Why did you post 2 threads that are the same thing?

Because I wanted to restate my question. Apparently it want clear the 1st time. And I wasn't able to find a way to close the original thread with this tapatalk program.

Might u have an answer for me kind fellow? ...

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[juntjoo]

This part is very important and apparently quite tricky so I want to make sure I ask the right questions. I don't just want to know what different methods people use to do this, I want to understand what I'm doing and why, and specifically if my cam shafts are off or not

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[Calan]

Starting a duplicate thread won't get you those answers any faster. In fact, it will tend to just make people want to help you less.

Please post future comments and questions in your original thread, as this one will most likely be deleted.

 

[Lofty]

I figured out how to explain it for you.

The marks are for you to have the cams in sync. EG IF YOU LINE UP THE MARKS, THE CAMS ARE IN SYNC.

Dowels are not the same as cam lobes.

 

[newTSIguy]

le cam gears , clasic

 

[DSM1G90]

I used clothespins to lock the belt on my cams - worked pretty slick.

As all mentioned: get the marks across from one another (and this is where you do the two 17mm wrenches on the cam bolts trick to hold them in place - you can also just roll the EXH cam back to meet the INT cam mark), then lay the belt across the top, then secure with, either the bulldog clips, or similar holding device before you lace the belt down south.

When you lay that belt across the top of the cams and belt secured, the cams aint gonna move and they'll stay at their marks..

...plain and simple...... don't make life difficult.

-DSM

 

[juntjoo]

Okay, so if the cam shafts have to operate in sync with each other, but the belt has to be installed with the cam shafts out of sync, is it safe to assume that the reason for this is because belt tension will pull the shafts back, or closer to in sync?

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[Calan]

Okay, so if the cam shafts have to operate in sync with each other, but the belt has to be installed with the cam shafts out of sync

Did you read any of the advice that people have posted here? You don't install the belt with the cam shafts "out of sync". You line the gears up, and put the belt on. Then you work clockwise around the idler pulley, oil pump sprocket, crank sprocket, and tensioner.

It ain't rocket science.

 

[juntjoo]

I figured out how to explain it for you.

The marks are for you to have the cams in sync. EG IF YOU LINE UP THE MARKS, THE CAMS ARE IN SYNC.

Dowels are not the same as cam lobes.

Yeah, but they're not. As I mentioned, when the marks meet in the middle and dowel pins point north, intake shaft is settled, or at rest while the exhaust is pressed against the springs slightly.

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[juntjoo]

Did you read any of the advice that people have posted here? You don't install the belt with the cam shafts "out of sync". You line the gears up, and put the belt on. It ain't rocket science.

Well define "in sync"


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[juntjoo]

Yes every thing has to line up perfectly when belt is instaled. And yes the exhaust cam will not be in the "rested" position and it will want to jump back to "2:45". you need to bring it to 3:00, get the belt over the cam gears and clamp or ziptie the belt to each cam gear to hold the gears in time with each other(without damagingthe belt). Then you can start working the belt down to the oil pump sproket and crankshaft sproket.

Thanks... for acknowledging what I'm saying

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[bryanwheat]

When the marks on the cam pulleys are lined up the cams are where they are supposed to be. It doesn't matter if one cam has spring tension and the other doesn't.

 

[Calan]

Well define "in sync"

I can't think of a simpler way to explain it. Read the article that Lofty linked to.

You simply line up the marks on the gears so that they are across from each other and parallel to the head, and put the belt over them. Then use something to hold the belt in place on the gears (zip tie, paper clamp, clothespin, kid's finger, heavy books...whatever) while you work the belt into place around the other components.