Timing

[Purplegstslut]

Hey everyone. I have a good question for you. I have some after market cams and adjustable cam gears. I timed my motor and everything went great. Only thing is the cam alignment is of. Only by half a tooth. It's how it was when it was running before I believe. Just was wondering what you have to say

 

[Mello]

If everything is mechanically correct and, as you say, is all good; then I say your head and or block have been decked.

 

[Purplegstslut]

Well I just replaced the head because the valves were bent by some jackass that worked on it after the harmonic balanced broke and f***ed the timing. I was just seeing what people had to say on here before I started trying to crank the motor. Don't want to replace the head again. And spent two hours trying to time it but that's the closest I could get and it's barely off by half a tooth.

 

[Eclipsedriver1981]

as long as all the other timing marks are on point it looks like it would be fine...how many times did you hand crank the motor after setting the timing?

 

[Purplegstslut]

I haven't hand cranked it yet because I wanted to make sure it was all good

 

[Purplegstslut]

But yes all timing marks are on point. The crank, balance shaft, and oil pump. Only one that's not perfect is the cams

 

[Eclipsedriver1981]

after i set timing i usually hand crank the motor a couple times to tighten up the belt then check timing marks..as long as there is no binding or unusual noise while doing so it shouldn't hurt anything. plugs out so easier to turn

 

[Purplegstslut]

Alright I'll do that after I put some oil in and then I'll check it. Thanks!

 

[SOADweskey]

I think it is likely that the offset is from decking the head or block. But I have also noticed with my car that the cam marks look off when looking down into the engine bay. Use a straight edge lined up from Cam bolt to cam bolt to verify that they are off. Sometimes it just appears they are off because you can't look at it straight on.

 

[steve]

I don't like where the dowel pins look to be. There are lots of junk adjustable Cam sprockets out there hat didn't account for the difference in the cam timing between the intake and exhaust but it looks like the dowels are at 3 and 9 if they are even installed.

What's chewing up the teeth of the sprockets?

 

[Purplegstslut]

The markings that were left on the cams were from a cam tool I used to keep them in place. They are brand new cam gears never used yet. I had the stock gears on before.

 

[steve]

I don't think you understood my questions.

Note where the dowel pins are on each sprocket in this picture then look where yours are in your picture.

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[kmetiuk]

I don't think you understood my questions.

Note where the dowel pins are on each sprocket in this picture then look where yours are in your picture.

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OH man! Good eye! I totally missed that on my first glance of the pic.

@Purplegstslut your timing is WAY off. @steve is right....the dowel pins MUST be up. If you look in the pic there are 2 timing marks on each gear. The one with the "zero" or circle and line and then the one with JUST a line. You are using the circle line which is the timing mark for the gear ONLY. The other timining mark is for you belt/head/block to be in alignment.

 

[joemamma]

good catch steve

 

[Purplegstslut]

@steve thanks I didn't even notice that! I appreciate it. I'll make the right right away. Thanks everyone!

 

[steve]

You'll need to retime the belt. You confused the cam adjustment indexes for the timing marks.
The dowel pins should be up at 12 (intake) and a little past 12 on the exhaust. The two timing marks should be aligned with each other and the parting line between the head and rocker cover.

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[Steveo Hunteer]

Re-time as others have said and I believe the FAQ says to hand crank 6 times and let it set, at least that is what I did..

 

[Purplegstslut]

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Alright so I appreciate catching the gears being pretty off. I fixed all that. Everything is at its proper mark and I cranked it by hand many times yet this is still the closest I can get the cam gears aligned. It is literally only half a tooth if even off.

 

[steve]

Everything is at its proper mark and I cranked it by hand many times yet this is still the closest I can get the cam gears aligned. It is literally only half a tooth if even off.

That's because they are defective. As I mentioned earlier there are lots of cheap versions in the market and this is one of they ways they are failures. Notice the timing marks They are on the center of the tooth on both when the actual marks on the OEM sprockets have one mark on the tooth and one the valley like this.

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Based on the image from the FSM 4G6X Overhaul manual it looks like the correct valley is the one above the line marked on your sprocket. So it looks like you got the belt timed correctly now.

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[joemamma]

steve you are one heck of man with great knowledge of dsm's

 

[Eclipsedriver1981]

Hey everyone. I have a good question for you. I have some after market cams and adjustable cam gears. I timed my motor and everything went great. Only thing is the cam alignment is of. Only by half a tooth. It's how it was when it was running before I believe. Just was wondering what you have to say

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