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Post by Brad Wunder on Jun 22, 2009 16:29:24 GMT -5
Need some help tuning your Tillotson? Keep in eye on this thread
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Post by paulskirocks on Jun 22, 2009 16:34:37 GMT -5
Nice!
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Post by speedrome on Jun 22, 2009 21:41:38 GMT -5
In the F200 class all the engines use the Tillotson carb.. There are a few different carbs available from Tillotson that work but they must all fall under the carb rule guide lines below. 9.4 Carburetor: Any commercially available butterfly type Tillotson HL series carb.
Minimum/maximum venturi diameter = .750/.790”. Minimum/maximum throttle bore
diameter = .990/1.010”. Metering holes non-tech. Restrictor plates are suggested in all
Junior classes. See Section 8.8 for recommendations. Filter cups, adapters and air filters
non-tech items. The carburetor pulse passage is non tech but can not be used to bypass
the restrictor plate. Its sole and intended purpose it to actuate the fuel pump inside the
carburetor. Pulse type fuel pumps permitted.On the Yamaha engine, arguably the most popular in the class the engine comes with from the factory with a HL388 Tillotson .. Most of the F200 class Tillotson carbs are very similiar in that they use the same diaphragm kits for rebuilding so if you are using something else its probably similiar and these procedures will still apply. The replacement of the rubber diaphragms are fairly simply and straight forward as well as being inexpensive.  High and Low needle tuning for F200 Threadsnorcal4cycle.proboards.com/index.cgi?board=f200&action=display&thread=60&page=3 |
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Post by Shawngeork on May 16, 2020 10:26:08 GMT -5
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