Valves and timing chain

[mellie]

I know valves should stay in their respective homes but wondering if its critical that springs are the same or can they be mixed about?

Also wondering about timing chain if there's a rule of thumb about slack or how do you know if it needs changing? This seems a bit loose but not sure.

Thanks

[kencombs]

Springs are ok to mix and match.  But, I recommend checking them all closely.  At least check free length.  Tension is not as critical on our engines.

That chain needs replacement.   Probably sprockets to if there is any visible wear on the shoulders of the teeth.

[keithb7]

That timing chain was done when Buzz landed on the moon. Suggest upgrading to strutted chain and sprockets. More robust.

Springs are cheap. I suggest Buy 12.  See Andy Bernbaum.

 

You can view my updated chain and gears here: Goto 3:22 mark.

 

 

Edited March 6, 2022 by keithb7

[mellie]

6 hours ago, kencombs said:

Springs are ok to mix and match.  But, I recommend checking them all closely.  At least check free length.  Tension is not as critical on our engines.

That chain needs replacement.   Probably sprockets to if there is any visible wear on the shoulders of the teeth.

Thanks - good point to measure and see what state they are in as well as sprocket wear. Might make sense rather than put something new on something old.

[mellie]

3 hours ago, keithb7 said:

That timing chain was done when Buzz landed on the moon. Suggest upgrading to strutted chain and sprockets. More robust.

Springs are cheap. I suggest Buy 12.  See Andy Bernbaum.

 

You can view my updated chain and gears here: Goto 3:22 mark.

 

 

Thanks Keith although I would point out that Neil was first. And not because my name happens to be Neil either...

Yes - I have been working through your considerable filmography as I pull this thing apart - very helpful and well laid out. Kudos!  I hadn't got to this video just yet but see what you mean. This is a D42 (1951 ) but it didn't have that slinger washer you put on the crank after putting on the gears - that must have been deleted on later engines?

 

Waiting patiently for restrictions to drop - we are 10 minutes from the border so that will open up availability of parts - or at least lower shipping costs.

[keithb7]

My engine that I rebuilt and documented is actually a 25" long Canadian 1954 Dodge engine.  It was 228 CI.

Edited March 7, 2022 by keithb7