Board index Flathead Power-Technical Questions, Answers, and Suggestions Indians Timing help needed

Timing help needed

Post Thu Sep 17, 2009 8:28 pm

Posts: 161
Location: Radolfzell, Germany
Hi there,

I`m trying to time my 1946 Chief but don't find the $ sign on the fly wheels. The only sign I find is a "+" sign. Can anybody help?
I didn't see the engine apart.

thanks
Klaus

Post Fri Sep 18, 2009 1:19 pm

Posts: 251
Location: Hudson, Florida
The$ is the timing mark, the + mark is the top dead center mark. The $ comes first then right behind is the + sign, actually a division sign.

Post Mon Sep 21, 2009 4:44 am

Posts: 161
Location: Radolfzell, Germany
Thanks Neil,

the funny part is, that there is no other sign and the "+" looks like a real + and not a -. The "+" looks like a factory stamp. Assuming that it defines the TDC, how many degrees away should I then find the "$" sign (or the timing position)?

thanks
Klaus

Post Mon Sep 21, 2009 7:26 am

Posts: 251
Location: Hudson, Florida
Klaus, With the $ sign in center of window you will be 1/2 inch before top dead center, Both signs are in the narrow part of flywheel face. They are very near 2 1/2 inches apart on circumference. My 46 and 47 motors also look like + signs:)

Post Fri Jan 01, 2010 9:52 am

Posts: 61
Location: Heuchlingen- Germany
.....and how do you time the engine if there is no timing whole in the left crankcase? Do I have to remove the front cylinder head? That would be hard- there is only little space to do that!!!
Oliver

Post Fri Jan 01, 2010 9:56 am
panic

..
Last edited by panic on Sun Nov 28, 2010 6:29 pm, edited 1 time in total.

Post Fri Jan 01, 2010 4:28 pm

Posts: 251
Location: Hudson, Florida
Never seen cases without a timing plug:) But Panic is right, rear would be easier.

Post Sat Jan 02, 2010 3:42 pm

Posts: 604
Location: Largo, Fl

No timing hole prior to ABOUT '43-'44. Why would the rear be easier?
Image

Post Sat Jan 02, 2010 7:01 pm

Posts: 251
Location: Hudson, Florida
Didn't know that:) I guess either cylinder head off an 1/2 inch before TDC, which ever you prefer. How would you go about it Indianut?

Post Tue Jan 05, 2010 1:37 pm

Posts: 41
Location: Lakewood, Washington USA
Timing may be done on the rear cylinder with the head removed and based upon piston height from the cylinder deck. The specs call for the piston to be 17/32” below the cylinder deck coming up on the compression stroke. I have developed a handy-dandy timing tool that allows you to time based on piston height with the rear head on the engine using the spark plug hole.
Last edited by Johnmcmd on Wed Jan 06, 2010 11:54 pm, edited 1 time in total.

Post Tue Jan 05, 2010 3:28 pm
panic

..
Last edited by panic on Sun Nov 28, 2010 6:29 pm, edited 3 times in total.

Post Tue Jan 05, 2010 3:34 pm

Posts: 251
Location: Hudson, Florida
:)) Exactly why I use timing marks to get close, then move distributor to where engine runs best and starts best. :)

Post Wed Jan 06, 2010 2:42 pm

Posts: 41
Location: Lakewood, Washington USA
Point is to get it close without having to disassemble the rear cylinder head. Indeed most distributors have enough slop in their drive gear and rotor slot to offset otherwise "perfect" timing.
Last edited by Johnmcmd on Wed Jan 06, 2010 11:53 pm, edited 1 time in total.

Post Wed Jan 06, 2010 6:44 pm

Posts: 41
Location: Lakewood, Washington USA
This tool slips into the rear cylinder spark plug hole and rests on the closed exhaust valve and is slightly longer than 17/32" to make up the difference.Image

Post Fri Jan 08, 2010 9:53 am

Posts: 61
Location: Heuchlingen- Germany
This method with such a tool was always in my mind- and you did it, great Johnmcmd! But why the rear cylinder? My Chief manual tells me to time at the front cylinder!?!

Post Sat Jan 09, 2010 10:11 am

Posts: 41
Location: Lakewood, Washington USA
Timing on the front cylinder (when there is a timing plug) is because the timing marks on the flywheel are indexed to the position of the front cylinder piston. This is a V-twin with the cylinders offset by 42 degrees so the rear cylinder does not fire at the same timing mark. This maybe somewhat moot on an earlier engine without a timing plug to line up the flywheel timing mark. If you were doing it solely on piston height then it really wouldn't matter...except for ease of access. I have a clear lucite plug for the timing plug and have painted a white index mark on the flywheel. This way I can line up the mark with the hole (make sure front piston is on compression stroke); turn the ignition on; fully advance the spark; and then rotate the distributor until the amp meter fluxuates on-off. That will static time your engine. Then I run it with a timing light on the front ignition wire to dynamically test the timing.

Post Sat Feb 26, 2011 9:17 am

Posts: 21
The timing hole is the 2nd from the bottom in the picture


[quote="indianut"]No timing hole prior to ABOUT '43-'44. Why would the rear be easier?

Post Thu Mar 24, 2011 11:57 pm

Posts: 1034
Location: Ojo Caliente,NM,USA
Indian specified timing on the rear cylinder on the older engines that had the timing hole at the bottom. They specified the timing in fractions of an inch before TDC. Most of these flywheels only marked TDC if they were marked at all although I have seen a set with marks for both case styles. The later engines that had the large timing hole at the top specified timing on the front cylinder and usually had TDC and the timing mark but timing in fractions of an inch were still specified.
Dusty


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