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On 31 Mar 2006 at 9:23, ken2k wrote: > I just had the engine in my 71 square rebuilt. It ran ok but when i got it > home and tried to check the timing it was way off, i had to set it by feel > and ear. Now it runs great, the best it ever did but the timing mark is at > about 11 oclock, if TDC is 0 degress. It has dual carbs, not original, but > balanced etc. What does this mean? is it a cause for concern or shoud i just > be glad it runs well. Incidentally, before he rebuilt it the distributor was > off 180 degrees. There are a couple of things to be aware of here. One is that it is quite possible to time an engine by ear in such a way that it runs and sounds great but is really hard on the engine. Too much advance will do this, and in our case you don't want to go over more than about 32 deg advance total under load. As to your observation, it's possible that you're looking at the wrong timing mark. For a '71 the timing marks look like | | | | and the leftmost mark is TDC. If your timing marks don't look like this then TDC is elsewhere. It's possible that your distributor mech advance is stuck. This is common and makes it necessary to compromise and set the idle timing high so that the timing is closer at speed. This is not a good compromise at all, so the best thing to do is to send the dist to me to be repaired. If yours is stuck, this will make a HUGE difference. You can tell if yours is stuck by watching the timing marks move as you increase the rpms. They should move dramatically. If not, it's stuck. You can also test this by just grabbing the rotor by hand and twisting it CW. It should move a ways smoothly and then snap back smartly when you release it. Ignore any play in the drive dog and gear. If he rebuilt it right, then the drive gear is back in there correctly now. We'll hope that's the case. Some people will correct this in the distributor, but this is a mistake, because you'll forget about it and then a different dist won't work right someday and you'll be confused all over again. -- Jim Adney jadney@vwtype3.org Madison, WI 53711-3054 USA ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ List info at http://www.vwtype3.org/list | mailto:gregm@vwtype3.org ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~