R/C Tech Forums - View Single Post - GRP... Engine... Thread...

01-22-2009 | 09:47 PM

#877

Poppin Fresh

Tech Regular

Joined: Jun 2008

Posts: 342

From: NY NY

I just got my engine with a GRP #4 plug. Will this be okay to finish breaking in the engine or should I switch to a GRP #5 plug?

What would be the best method for break-in? Thanks in advance.

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