Cams in time?...Need help ASAP

[Drifter27_04]

I have a simple and stupid question for some of you?

What would the difference be if the car was put in time with the cam pulley dowel pins putting down instead of up as most of everyone states? My car is currently set this way and I have been questioning it but a buddy has been telling me that its ok and that it was in time but I still question it even so the car runs good and all.

Please let me know your thoughts as I am planning on putting it in time myself this evening.

Thanks you all

 

[dsm-onster]

We have a waste spark system. . . I THINK this will cause you to run on the wasted ignition sparks instead of the intended ones. I also THINK the wasted sparks are weaker. . . I could be wrong.

You can do it the right way. . . if you want.

 

[g_ferg]

I have a simple and stupid question for some of you?

What would the difference be if the car was put in time with the cam pulley dowel pins putting down instead of up as most of everyone states? My car is currently set this way and I have been questioning it but a buddy has been telling me that its ok and that it was in time but I still question it even so the car runs good and all.

Please let me know your thoughts as I am planning on putting it in time myself this evening.

Thanks you all

If the dowel pins are down then the timing on the car is off. The dowel pins must be up for the cars timing to be correct. The timing needs to be redone if the dowel pins are facing downward and not up like they should be. You could very easily bend the valves also if you were to try and start the car. The cams are 180 degrees off if the dowel pins are facing downward also.

 

[Drifter27_04]

As I was thinking myself but was not sure thanks for the comments and confirming this for me.

 

[TjPhillips36]

I believe it is still in time, as long as you don't have balance shafts. Some simple math, the crank sprocket rotates twice to every 1 turn of the camshaft. So every turn of the crankshaft rotates the cams 180 degrees. So after you just did a timing belt and rotate the crank once, the crank would be aligned with it's timing mark and the camshaft dowel pins would be pointed down and your still in time. Due to the CAS you would still be in time with everything running properly. However I would just do it the way everybody else does, why be different with something that can destroy your motor?

Also you can put the spark plugs 4123, 1423, 1432, 4132 on a stock ignition. As long as 1 and 4 are on the first coil and 2 and 3 are on the 2nd coil. The wasted spark is just as strong as a normal spark. The coil sees no different for when 1 or 4 are firing.

 

[Big Woo]

Lets all remember that we are dealing with a four stroke engine here. 720 degrees of rotation for the crankshaft per complete cycle, and 360 degrees for the camshafts. Therefore if the cams are 180 degrees out and number one piston is still at TDC the timing is still fine.

The piston passes through TDC twice for every single complete rotation of the camshafts, once at the end of the compression cycle/begining of the power cycle, and once at the end of the exhaust cycle/ beginning of the intake cycle.