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64 pan
Posts: 26
Joined: Mon Jun 08, 2009 2:31 pm
Bikes: 64 pan,78 shovel
Location: phoenix az



Post by 64 pan » Sat Sep 26, 2009 4:14 am

my exaust pipes r getting chery red do i need to advance or retard my timming

Posts: 2685
Joined: Sun Jun 06, 2004 5:14 pm
Bikes: '31 VL, '34 VD, '45 WLA, '47 WL, '49 FL, '51 WL, '58 ST (Hummer), '71 GE (Servi)
Location: Lonoke, Arkansas

Re: timming


Post by FlatHeadSix » Sat Sep 26, 2009 12:54 pm

If timing is actually what is causing your engine to run hot then advancing the timing may help.

The 3 most common causes of overheating are: intake manifold leak, lean mixture, and retarded timing.

other causes are less common but certainly worth looking into, things such as reduced oil flow, heavy load, etc.

set your timing by the book and see if it helps.


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Location: Michigan

Re: timming


Post by Bosheff » Sat Sep 26, 2009 1:00 pm

If your pipes are turning cherry, and timing is in fact the reason, you will need to advance the timing. Keep in mind that just because the pipes are glowing, there may be other factors involved other than timing. A lean fuel mixture could cause this condition, (carb not properly adjusted or malfunctioning), or a vacuum leak (sucking air) to name a few. Usually when the timing is slow and the pipes are are turning red, the engine has no power as the RPM's increase as well as running hot....bosheff

64 pan
Posts: 26
Joined: Mon Jun 08, 2009 2:31 pm
Bikes: 64 pan,78 shovel
Location: phoenix az

Re: timming


Post by 64 pan » Sun Sep 27, 2009 4:38 am

ok maby its not timming bike runs pretty good starts good 4 prime kicks then 1 kick
dont think any air leaks. i was tring to check gen running 2000 rpm when i notcied it never befor or when riding i dont think eng has been runnin hot never seemed to loose power or smell hot.

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Joined: Tue Dec 18, 2007 2:10 pm
Bikes: 1941/59 EL
1952 FL
1977 FLH
1994 Fatboy

Re: timming


Post by Bigincher » Sun Sep 27, 2009 6:04 am

If you ran the bike while parked for an extended period without proper air flow, there's a good chance of severely overheating it. The simple solution is to set up a big box fan and blow it on the motor on high from the side while doing stationary diagnostics with the engine running.

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