4 cyl valave adjustment

[Guest Aussie John]

I have been having trouble getting the valve clearences correct on my 23 DB..

difficult to do when hot as hot exhaust pipe and skin does not go together.....

is there a "cold" set of clearance figures for the valves..

(mine has a magneto)

Cheers

John Y

[nearchoclatetown]

I set mine cold at .006. Seems OK. It still is not easy for an old fat guy to stand on his head and it takes three hands. I would not attempt it hot, even if that is the correct way.

[mrgearhead1]

John

I calculated the expansion of the steel at running temperature of 160 degres F. Assuming the valve is the same temp. as the block add .004 in. to the factory setting on page 134, MECHANICS INSTRUCTION MANUAL, APRIL 1927.

OK the setting is .008 intake, .009 exaust.

Hope this helps answer your question.

Reuel (rule)

[Guest Aussie John]

Thanks for the info ...have set and waiting to give a long run to check out ...will see what difference is

[gundog99]

Reuel, Do you think +.004 will be the same for 6 Cyl valve adjustments and do the inlet and exhaust valves run at the same temperature?

[mrgearhead1]

Gundog

No the .004 is based on the length of the particular valve. The 12 volt Dodge 4 has a 6.5 valve length. The temperature of the intake verses exhaust I went on the supposition that they both are at the same temperature. I will be verifying temperature over the next couple of weeks. In order for it to make a difference the exhaust valve must be approximately 30 degrees F higher then the intake. Well as mentioned I will be verifying over the next coup of weeks. In order to calculate the expansion I need the valve length and running temperature.

Reuel