• Hey Guest!
    British Car Forum has been supporting enthusiasts for over 25 years by providing a great place to share our love for British cars. You can support our efforts by upgrading your membership for less than the dues of most car clubs. There are some perks with a member upgrade!
    **Upgrade Now**
    (PS: Upgraded members don't see this banner, nor will you see the Google ads that appear on the site.)
Tips
Tips

How to find TDC

Share this page

jerrybny

jerrybny

Jedi Knight
Offline
I am wondering how to find top dead center. I think the markings on my crankshaft pulley are off. There's the original riming line which I assume is supposed to be TDC. However the previous owner had painted a new TDC line it looks like. There's a solid line painted in yellow to the right of the original mark(looking from front of engine) and then a couple of yellow dots after that. I would like to line up my rotor so that it points to cylinder #1 when that clyinder is at TDC. Then I can see if the yellow line or the original line is correct. Hope I made sense as to what I am asking. I have a test lite so all I need to know is how to find TDC for #1. Thanks
 
Assuming the head is still on... I think a hot rod shop will have a gadget that inserts thru a spark plug hole that will allow you to determine TDC (stops the piston -- once each way, you mark the spots on the pulley -- halfway between is TDC). Also possible to make your own from an old spark plug.

But if you suspect that the mark on there might be right, just looking at the valves may be good enough to tell you that.
 
Back
Top