I did finally get it figured out, the cylinders are oriented with #1 to the front passenger side as in automotive but the firing order is 12736845. It has reverse rotation crank but normal rotation cam. I normally work on automotive engines but was asked to assemble this one due to the installer having time constraints. Thank you for your help and I have run into the reversed Chryslers on the orientation and the one I worked on was with #1 at the back of the engine.
Mike, yes... the firing order will be reverse from that of a conventional rotation engine...... and beginning from #1 cylinder.
I am puzzled about your mention of a "reverse rotation crankshaft". What is that all about?
In most other gasoline engines, the same crankshaft is used, piston wrist pin offset is reversed, and the camshaft can be rotated in one of several ways.... 2 gear driven, 4 gear driven, chain driven.
It sounds as though your cam is being two-gear driven, in which case it will rotate it in the conventional direction, but of course the profile would be for the reverse cylinder firing order.
Your distributor drive would remain conventional.
As far as ignition timing goes, we should be able to ignition time from any cylinder, as long as we have a corresponding TDC mark for that particular cylinder.
IOW, if the balancer (or flywheel) was indexed in 8 positions (V-8), you could strobe from any cylinder's spark plug wire, and end up with accurate ignition timing.
On the Chrysler 318/360 #1 cylinder topic..... that was precisely the disagreement.
The person who argued this was member Greasemonkey.
http://www.marineengine.com/boat-forum/showthread.php?390821-number-one-on-chrysler-marine-318
He swore that the 318/360 #1 cylinder was as per your comment, but could not provide any Chrysler Marine supporting data or information on this.
Conversely, several of us provided information via Chrysler Marine that clearly showed #1 in the standard location (I.E., the FWD-most cylinder).
If you have this info, by all means, please post it, or post a link to where I could read it.
I'm talking about Chrysler Marine Corp info........ Not info such as some of the unorthodox ChrisCraft installations.
I would love to see this!
Good luck with your 272. You must be restoring an older boat.
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