Briggs and Stratton billet flywheel help

seapar

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Hi all,

I am in the process of building a racing lawn mower. I have a 25 year old B&S 13hp engine, (model 2245432) that appears similar to the vanguard/2100 13hp.

In the process, I've de-governed it and upgraded the carb etc, so I need to have a billet flywheel, as per the rules.

Now, would a GX390/Predator 420 or any of the clones flywheels work with this engine? I cannot find any information or specs or dimensions online. Or are there specific flywheels built for this engine?

Many thanks!
 

seapar

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From the flywheel cover.
The block also has the numbers GM401 028801. There is a Mitsubishi logo stamped on the connecting rod if that helps.
 

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