See page 2 : TDC problems with timing belt change

[JeLani]

Trying to adjust the head timing and it is off , only the crank pulley moves and the head one wont move .


Does the head have to be bolted for the pulley to move? Edit : no , dumbass the belt has to be on.





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[Andy.B]

Due to interference timing, the valves will try to occupy the same space as the cylinders at any cylinders TDC.
You CAN spin the crank with the head bolted down, or just sitting on the block, but you want to make sure you aren't trying to open a valve into a cylinder.
Since it isn't bolted down, I would pull it off and get it to TDC (line up the arrow on the pulley with the line on the head), and then rotate the block to cylinder 1 TDC before putting the head back on.
DON'T tension the belt onto the pulley without having the head properly torqued down.

[jeffnhiscars]

You also have the recalled stamped cam gear. Fortunately the belt isn't on yet so you can replace it.

[JeLani]

You also have the recalled stamped cam gear. Fortunately the belt isn't on yet so you can replace it.

The early ones are prone to breaking right?

[JeLani]

Due to interference timing, the valves will try to occupy the same space as the cylinders at any cylinders TDC.
You CAN spin the crank with the head bolted down, or just sitting on the block, but you want to make sure you aren't trying to open a valve into a cylinder.
Since it isn't bolted down, I would pull it off and get it to TDC (line up the arrow on the pulley with the line on the head), and then rotate the block to cylinder 1 TDC before putting the head back on.
DON'T tension the belt onto the pulley without having the head properly torqued down.

How could i set it to TDC with it being off? I know it sounds possible but how to go about it?

[Yungbimmer]

How could i set it to TDC with it being off? I know it sounds possible but how to go about it?

Hold the head down on a work bench with the cam gear hangin over the edge, take your old timing belt, put it on the gear, clamp it with vices, and turn it.

[Steve o 77]

Hold the head down on a work bench with the cam gear hangin over the edge, take your old timing belt, put it on the gear, clamp it with vices, and turn it.

Or use an inverted torx socket to turn the cam sprocket to tdc.

[JeLani]

Anyone know the socket size please?

[Kershaw]

If you can secure the head (friend holding it) I'm fairly certain I've wrapped a timing belt around the cam gear and then holding the belt tight, rotated the head by hand.

the inside one looks like 10mm hex. Not sure if I would trust it to not strip. The big one, I don't know, 17 or 19mm?

[JeLani]

If you can secure the head (friend holding it) I'm fairly certain I've wrapped a timing belt around the cam gear and then holding the belt tight, rotated the head by hand.

the inside one looks like 10mm hex. Not sure if I would trust it to not strip. The big one, I don't know, 17 or 19mm?

worth trying. would it be wise to install a new cam gear before doing this? and would it have to be tensioned?

[modernist]

The crank bolt should be 22mm. The cam gear bolt is M10x35, so probably an 8mm allen bit. Not entirely sure about that, though. You can turn the cam with a ratchet on the cam gear bolt -- that's the easiest way I've found.

But yeah, I'd definitely replace the cam gear with the new style (pn 11311714988 ), as well as the cam gear bolt (pn 11311715412); the new ones are e-torx, much less prone to stripping out. The cam gear bolt is a bear to get out without the timing belt in place; best to spin it off with an impact gun. Be **very** careful that the allen bit you use fits tight in the bolt, and that the socket head in the bolt is cleaned out. Allen heads strip easily and lord help you getting a stripped cam gear bolt out.

[JeLani]

The crank bolt should be 22mm. The cam gear bolt is M10x35, so probably an 8mm allen bit. Not entirely sure about that, though. You can turn the cam with a ratchet on the cam gear bolt -- that's the easiest way I've found.

But yeah, I'd definitely replace the cam gear with the new style (pn 11311714988), as well as the cam gear bolt (pn 11311715412); the new ones are e-torx, much less prone to stripping out. The cam gear bolt is a bear to get out without the timing belt in place; best to spin it off with an impact gun. Be **very** careful that the allen bit you use fits tight in the bolt, and that the socket head in the bolt is cleaned out. Allen heads strip easily and lord help you getting a stripped cam gear bolt out.

tight so i dont mess it up and want to kill myself after, i'll test it with my hand first before using an IG . thanks for the p/n

[jeffnhiscars]

I do t recall seeing an Allen holding the cam gear but on anything g prone to stripping you probably want to avoid an impact. It's easy enough to brace th cam gear with an old belt, vice grips and perhaps another pair of hands.

[JeLani]

Got an 8mm hex bit. The gear spins and wont loosen. Is this why i need to use an old belt?




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[JeLani]

Got it :)


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