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valve timing?
Just can't stay away
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Is there an way to check your valve/cam timing without removing the oil pan on a A14 motor?

Posted on: 2006/5/9 16:20
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Re: valve timing?
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First, I guess, would be to ask why you feel the need? Most "rookie" mech.s fail to put the dizzy back in the correct position. get engine to T.D.C., then pull your cap and see
where the rotor is pointing, adjust accordingly. Also, check the valve adj.for too tight. If you still feel the cam timing is not right, I think it best to pull the motor out, as the gaskets WILL leak!

Posted on: 2006/5/9 17:47
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1965 Datsun Fairlady 1500-A14 powered!
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Re: valve timing?
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Have checked the dizzy and seems to be in the right place.

I think my timingchain skipped a tooth cause i have to set my timing to 7degrees ATDC or else it pings really bad. At first i thought it was my timinglight that went bunkers but after testing on another car it seems to work fine I cant remember the last time my ute was running propperly so I didn't really notice a lack in performance(can't remember the last time i took her up to 6000rpm either) I've also checked if the timing mark on the crank pully is aligned with piston #1 tdc and thats also fine.

so with my little experience of engines I figured it could be the valve timing. I'm open to any suggestions

thanks

Posted on: 2006/5/10 10:22
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Re: valve timing?
No life (a.k.a. DattoMaster)
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Are you still using points or electronic ignition?
I have noticed one time my car pinging and after checking the points it ran 100% fine.
Was your timing always on 10 degrees or always on 7 degrees.
As I understand, you are also at the coast and not inland.

Correct me if I'm wrong but is'nt timing different for inland and cars at the coast?
I cannot imagine that it could have skipped a tooth. It will not idle properly then.
My uncle's volkswagen jetta was taken in for a timing belt replacement.
They replaced the belt for him. After coming home the car would'nt idle properly.
He discovered a tooth was skipped with the belt replacement. After putting it in the right way it was 100% fine.

Posted on: 2006/5/10 11:08
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Re: valve timing?
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hhmm come to think of it I did tamper with the points before I checked/set my timming.

Tell me if this method is wrong cause i'm not sure if its the right way to do it. I take the dizzys cap off, rotate the engine till the points are at the highest point on the cam, adjust that distance to .50mm - .55mm (if my memory serves me correctly) with feelerblades and tighten points screw.

Posted on: 2006/5/10 13:55
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Re: valve timing?
No life (a.k.a. DattoMaster)
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Sounds right to me?
Just make sure if it is still right. Maybe it burned again. Then check the timing again.

Try and change to electronic ignition if you can in the future.
It makes a world of a difference.

Posted on: 2006/5/10 15:50
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Re: valve timing?
No life (a.k.a. DattoMaster)
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Dizzys not a tooth out?

Posted on: 2006/5/10 16:17
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Re: valve timing?
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I have never heard of an A-series timing chain jumping a tooth. It's a small chain and has an automatic aduster, so it is a far more reliable chain than in most engines.

Points are set to 0.45-0.5mm --HOWEVER, this is for new points only. With used points it probably will result in bad timing. For used points the only accurate way to set them is with a dwell meter, set to 49-55 degrees. So I suggest either borrow a meter, or buy a new set of points.

Posted on: 2006/5/10 17:15
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