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Can anyone help guide me on where I can find info on how to time my 30 flathead 6 ? I pulled generator to repair and moved the crank not realizing, that from what I understand the timing runs off of the generator chain drive I’m guessing I moved it enough to screw it up. I’ve looked on line but have not had any luck on finding much on the topic. Any help would be appreciated.
@41hudson6-2 Welcome to VCCA Chat. Since this isn't Chevy or GMC related I'll move it to the General Discussion forum.
7046 old site posts
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1938 Master Business Coupe-Sold, now living in New Jersey
1953 210 Sedan
Ok thanks
I suspect the information you are seeking is in the shop manual for your car. There are many available from old car parts vendors and on ebay.
You might ask your question on the Oldsmobile Club of America's website: https://www.oldsmobileclub.org/
Cheers, Dean
Dean "Rustoholic" Meltz
San Leandro, CA
3511 posts on vccachat.org
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Welcome!
I assume you are referring to the timing of both valves and ignition?
Up front, I'm no Oldsmobile expert, and I only have a service manual for the 1942 Olds.
So... I know the camshaft was chain driven in 1942, and it appears both the camshaft and generator were chain driven in 1930.
It also appears the camshaft and generator were driven by the same chain, correct?
I can tell you this, in 1942 there was a special tool for timing the crank and camshaft sprockets to each other.
But, all that tool did was make it easier to line up the punch marks on the outer edges of the two sprockets with each other on a line between the two shaft center lines, which can actually be done without the special tool.
If the sprockets are similarly marked for 1930, timing would be easy... but with the timing cover off unfortunately.
BUT... all that said, the first thing I would do if I were you, would be to remove the front valve chamber side cover.
Then find the timing marks on the flywheel and find the top dead center (TDC or UDC) mark.
Then slowly roll the engine over clockwise as viewed from the front, and watch the exhaust valve for number 1 cylinder.
At some point the exhaust valve will be just finishing closing and the intake valve just beginning to open.
There should be a very small amount of overlap of the action of the 2 valves.
At this point, the marks on the flywheel should be at or very near to top dead center (within the equivalent of 1 tooth on the crankshaft sprocket).
If it is... you should be good to go.
If not... you will likely need to remove the timing chain cover.
Hope that helps.
Ole S Olson
Saskatoon, Sask, Canada
1946 DR 3/4 ton stake
1139 old site posts
That does. Thank you for the info.