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Engine Finding TDC?

  • Thread starter Thread starter DemonGT
  • Start date Start date Nov 19, 2020

DemonGT

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May 24, 2002
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Sparta,WI
Nov 19, 2020
#1
  • Nov 19, 2020
  • #1
I have a adjustable pointer that i am unsure if its pointing where it should so thought id make sure it was pointing right.

Just wanted verification that i did the process correct.

Turned motor over until on compression stroke of #1
installed piston stop
Turned until piston touched stop, made mark where pointer was pointing
reversed and turned the other way until piston stopped, made mark where pointer was pointing
divided in half to get middle of each mark which "should" be TDC?

Now i make a mark where the half way point is for TDC, turn motor by hand so pointer is pointing at new TDC mark
then loosen and adjust pointer to point at 0?
 
Reactions: STEVE PATTON

General karthief

wonder how much it would cost to ship you a pair
20+ Year Stangneter
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Nov 19, 2020
#2
  • Nov 19, 2020
  • #2
I'm a little confused (shouldn't surprise anybody that knows me)

DemonGT said:
Now i make a mark where the half way point is for TDC, turn motor by hand so pointer is pointing at new TDC mark
then loosen and adjust pointer to point at 0?
Click to expand...
You can verify you mark by sticking a small screw driver in the #1 plug hole and (crank the engine by hand with a braker bar) feel the piston move up till it stops and begins to move down, turn the engine back to the top ( piston will stop rising) you can turn the engine back and forth to get the piston at the top of it's stroke, your pointer should be at 0* at this point.
 
Reactions: DemonGT, KRUISR and Potomus Pete
H

Haste347

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Oct 6, 2020
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Nov 27, 2020
#3
  • Nov 27, 2020
  • #3
Yes, what you did was about as good of a way as you're going to get with the head on.
 
Reactions: DemonGT

jrichker

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Nov 27, 2020
#4
  • Nov 27, 2020
  • #4
DemonGT said:
I have a adjustable pointer that i am unsure if its pointing where it should so thought id make sure it was pointing right.

Just wanted verification that i did the process correct.

Turned motor over until on compression stroke of #1
installed piston stop
Turned until piston touched stop, made mark where pointer was pointing
reversed and turned the other way until piston stopped, made mark where pointer was pointing
divided in half to get middle of each mark which "should" be TDC?

Now i make a mark where the half way point is for TDC, turn motor by hand so pointer is pointing at new TDC mark
then loosen and adjust pointer to point at 0?
Click to expand...
it sounds like you got it exactly right.
 
Reactions: DemonGT and General karthief
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