Re: Timing is everything

["cruznmd" <racuti1@xxxx>]

I'm pretty sure, that that is what the book has me doing. The problem 
is, with #1 piston at TDC, when I rotate the cam to line up the 
driving pin and slot, a valve opens, striking the piston at TDC.

I -think- what I need to do, is lower the piston, rotate the cam to 
the 'tween point that the driving pin will line up, then, raise the 
piston to back to TDC and put the chain on.

Once that's done and I rotate the engine by hand, and #1 piston is 
going back down from TDC, the exhaust valve should open correct?

Right guys??? :)

--- In dmcnews@xxxxxxxxxxxxxxx, "David Teitelbaum" <jtrealty@xxxx> 
wrote:
> I have never done the camshaft timing on a Delorean but I have done
> many other cars with overhead camshafts. One generic method is to
> bring one of the cylinders up to TDC on the compression stroke. Now
> turn the camshaft until it is in between the intake valve closing 
and
> the exhaust valve opening. If you are worried about crashing valves
> you could slowly turn the crankshaft pulley by hand and if you feel
> any resistance you could stop before you did any damage. It could be
> the reason the timing marks aren't lining up is because the timing
> chain moved a tooth because you didn't use the "dummy" bearing and
> sprocket to hold the chain while you removed the head.
> David Teitelbaum
> vin 10757
> 
> 
> 
> --- In dmcnews@xxxxxxxxxxxxxxx, "cruznmd" <racuti1@xxxx> wrote:
> > I have bolted on the one head I removed. I am now ready to time 
the 
> > engine. The procedure in the book is not working.
> > 
> > I have aligned the keyway and timing chain marks with the timing 
> > sprocket marks as described in the book. 
> > 
> > This isn't working because the book has you align the key way 
w/the 
> > LH bank of cylinders. Once you align the chain marks w/the timing 
> > marks on the sprockets, the cam is out of position. The drive pin 
is 
> > not aligned with the drive slot at the end of the cam. The slot 
and 
> > tab are supposed to be upppermost. The tab on the sprocket is, 
but 
> > the slot on the cam is down. When I try to rotate the cam to 
match 
> > up, a valve opens and strikes a cylinder and the cam will not 
rotate 
> > any further. I'm terrified I'll think I've lined it all up and 
crank 
> > the engine over and bend the valves. I've seen it happen.
> > 
> > I've already potentially done enough damage to the engine with my 
> > previous mistakes. Please help me into the light at the end of 
the 
> > tunnel.