Troublesome Cams

[CHeskett]

Hey, I've picked up this 1g and I cannot for the life of me figure out this one issue. It is almost like the intake and exhaust valves are completely flipped, so the intake valves open on the exhaust and vice versa.

I'm pretty sure you might need more info and that's okay, please ask away.

I couldn't find this anywhere else on the forum so I thought I'd post it. No, I did not time it, it was picked up like this. Any help would be much appreciated, and thank you in advance!

Also very sorry if posted in wrong thread.

 

[TalonEsi_96]

Is this when your trying to start it? Have you lined up all the timing marks and verified the dowel pins on the cams are up?

 

[CHeskett]

It wouldn't start, so I've torn the valve cover off and noticed it looks exactly like if the engine were going completely backwards when I turn it. Turning the cams clockwise yes.

This got me here: The car is timed but the dowels are down.

 

[1990TSIAWDTALON]

Are the cams in the wrong sides ??? Pictures of the cams in the head may be a better way to get more to chime in.

 

[Vegas Smith]

This should be interesting...

 

[TalonEsi_96]

Yeah your 180 off on the timing. Hopefully didnt bend any valves. Dowels should be up

 

[pauleyman]

It wouldn't start, so I've torn the valve cover off and noticed it looks exactly like if the engine were going completely backwards when I turn it. Turning the cams clockwise yes.

This got me here: The car is timed but the dowels are down.

If dowels are down you just didnt turn the crank enough times. Assuming you have balance shafts all marks should line up within six ful revolutions of the crank.

 

[pauleyman]

Yeah your 180 off on the timing. Hopefully didnt bend any valves. Dowels should be up

You won't bend valves with dowels down. But you may have balance shafts out of phase. Every rotation dowels change postions. Its a mathematical certainty.

 

[CHeskett]

Here are the cams, I'm not 100% positive it should look this way. I would take a look at the order that the cams are opening the valves before going to piston location. As soon as the intake shuts the exhaust opens. Intake starts opening very close to bdc, and closes at near tdc. Exhaust opens little after tdc and shuts at the bottom. (If that made sense )

 

[Vegas Smith]

You own a 1g, therefore, you most likely have an engine with a cam angle sensor, therefore, it's impossible to install the cam gears incorrectly due to the notch on the intake cam.

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