When checking chain stretch and after you align the cam marks and look at the crank marks to determine strech if any what side of top dead center should the strech show. ATDC or BTDC? Have read all the threads but have found none that mention this. Thanks for any imput. 1990 350 SDL w/ 603 Engine.

__________________
Who needs spark plugs.

Not familiar with yours . . . however I did a quick search and found these amoung many contributions addressing the subject. Hope these lead to the answer to your question.


http://www.peachparts.com/shopfor...ight=cam+timing

Here are the specifications for the valve timing events:
http://www.peachparts.com/shopfor...&threadid=64144

You will see who the contributors were.

__________________
Steve
'87 300TD - 132K - Soon 4-Sale
'84 300D Turbo - 122K - Driving
'77 VW Type II - 77K - Restored
'08 250EX Ninja
English Bulldog (Brier) - My best friend. Passed away 12/02/04 while in my arms.

I know nothing of this engine
But would not the crank set at tdc. cause the cam to be late to get to their mark if the chain had stretch???

So to have the cam at correct position the crank would have to turn more
with a worn chain and actually be ATDC.

What I am trying to say is a streched chain causes the cam to lag

Thanks for the imput. The treads that were posted would not come up. But the cam lag post puts it in perspective.

__________________
Who needs spark plugs.

Crank will be ATDC. If BTDC, the cam is off a tooth and the pistons will be hitting the valves.

Peter

__________________
1972 220D ?? miles
1988 300E 200,012
1987 300D Turbo killed 9/25/07, 275,000 miles
1985 Volvo 740 GLE Turobodiesel 218,000
1972 280 SE 4.5 165, 000 - It runs!