Heymow - Lawnmower Racing Forum

Engine Help => Other Engines => Topic started by: Blue Thunder on July 14, 2013, 11:34:14 pm

Title: Cheetah Cam Timing
Post by: Blue Thunder on July 14, 2013, 11:34:14 pm
Precision Cams, Cheetah twin intek cam timing position for a 44 arc engine. has any one found out what marks to use? Mine falls flat at 4000. i'v got spark timing at 30. thanks. 
Title: Re: Cheetah Cam Timing
Post by: PJG56 on July 15, 2013, 04:00:22 am
44 arc engine? I've installed 2 of these cams in Inteks, cam is made to use stock
timing marks.I always degree my installed cams so I know the actual valve timing events.
The cheetah cam is a good cam if installed right&will run 7500-7800rpm all day long.Did you change valve springs?
Title: Re: Cheetah Cam Timing
Post by: Blue Thunder on July 15, 2013, 09:54:50 am
Thanks for the reply PJG56, Up graded springs and a single 38 mikuni w/480 main. (plugs burning good). I used stock timing marks also, but have not used a degree wheel. i would think that would get me close, Do you know good literature to use degree wheel? Also touch the key and this engine fires right up.   
Title: Re: Cheetah Cam Timing
Post by: trbinrat on July 15, 2013, 11:02:29 am
http://www.heymow.com/index.php?topic=11805.0   Here you go
Title: Re: Cheetah Cam Timing
Post by: PJG56 on July 15, 2013, 10:17:33 pm
http://www.heymow.com/index.php?topic=11805.0   Here you go
This is for ignition timing,has nothing to do with valve timing events.How did you adapt 38 mikuni to intake manifold?
Title: Re: Cheetah Cam Timing
Post by: trbinrat on July 15, 2013, 10:44:18 pm
This is for ignition timing,has nothing to do with valve timing events.How did you adapt 38 mikuni to intake manifold?

Whoops.  To many saved book marks and not organized.  I posted it with out looking at it. Thanks for correcting me Paul.