TDC
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Posted: May 30 2008 06:35 PM
 
Robert Siminger (aka 29robert) [ View ] [ rsiminger@rcs-pdm.com ] [ Car Ads ] [ Blogs ]
La Verne, California
909-599-3191
 
Dumb queation No.47. What's the easiest way to find Top Dead Center on an engine that doesn't yet have power and doesn't have any timing marks on the Harmonic Balancer?
 
 
Comments
 
Posted by ol bear  -  05/30/2008 07:57 PM
TAKE THE VALVE COVER OFF FOR STARTERS ,,,,,,,,,,THE ONLY WAY I KNOW OF,, PUT UR MARK IN THE BALANCER WITH A TIMING TAPE OR A DIE GRINDER ,,,, OL BEAR,, I LIKE DAS IDEA ,, R THE HEADS OFF??
OL BEAR [ View ] [ Email ] [ Blogs ] [ Car Ads ] crown point, Indiana
 
Posted by da34guy  -  05/30/2008 07:55 PM
Pull #1 plug--

Stuff yer little finger in the hole and have Dale turn the motor over with a ratchet at the crank. When ya feel the pressure push on ter pinkie, should B TDC

Put a pencil (eraser end in) You'll feel the top of the pistion.

Good Luck

Almost finished Buildin In az. Don
Don [ View ] [ Email ] [ Blogs ] [ Car Ads ] Prescott, Arizona Charter Member since October 2001
 
Posted by DavyJ  -  05/30/2008 09:19 PM
Pull off the valve cover and turn the motor slowly, watch the rocker arms for cyl 1, when the intake closes and just before the exhaust opens is about as close as you'll get.
Still driving the wife's car, cause I am slow. [ View ] [ Email ] [ Blogs ] [ Car Ads ] Niagara Falls, Canada Charter Member since February 2005
 
Posted by 29robert  -  05/31/2008 01:37 PM
Thanks guys. That's about what I thought. Just wanted to know if anybody and some other fool proof method. Once I've got TDC, I guess I should put a timing sticker on the balancer and a pointer.
29robert [ View ] [ Email ] [ Blogs ] [ Car Ads ] La Verne, California Charter Member since November 2004
 
Posted by dakotah  -  06/04/2008 01:26 PM
This is probably late but way I've seen is to put a piston stop in the # 1 plug hole and turn crank by hand til it stops. Put a mark on crank balancer and turn crank in opposite direction til it stopsagain. Again put a mark on the the balancer and split the distance between the two marks- that's the true TDC. A light hit with a sharp chisel will make it permanent. A piston stop is a tool that is made up of a threaded piece( an old hollowed out spark plug can be used)with a bolt threaded into it. Automotive Engineering or a good engine builder can furnish more info on it as they use one to degree cams and balancers etc. A timing tape can be purchased also to put on the balancer after locating TDC
dakotah [ View ] [ Email ] [ Blogs ] [ Car Ads ] Port Richey, Florida
 
Posted by plwheelie  -  06/04/2008 05:43 PM
Dakotah has it correctly. Thats the way you have to do it when degreeing a cam properly. That is EXACT top dead center.

Paul
plwheelie [ View ] [ Email ] [ Blogs ] [ Car Ads ] Tahlequah, Oklahoma
 
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