@@thebug4046I had theses symptoms - sound of metal hitting metal or a high pitch note as if the piston was hitting the top of the cylinder. Piston slap it was. Old piston looked fine it wasn't until I compared the fit of old and new, I really understood. BR420 now running silky smooth Great video, and as a 5th scale RC guy you have a new subscriber from across the Atlantic. Happy new year from the UK.
@@Disco45 hey man that's exactly it! I get them in for repair every so often. And I was gunna get a ⅕ but can't find one for a good price that isn't destroyed lol and UK subs? I have a handful not sure how many but I get a few that pop in now and then! And happy new year to you and your family! 🍻💯
Dude. Replace that stupid catalytic converter muffler with a stock muffler. It helped on mine and made a big difference. Also prevented it from getting too hot after I shut it off. Just a quick tip.
@@thebug4046 Well, looking at your vid, it turns out yours has a holes on a piece of metal welded on there. That tells me it’s got a catalytic converter on it.
Great job on the piston replacement ,I just finished a complete tear down on a BR600 blower for the first time, would like your thoughts on what cover sealant to use ? and the piston ring placement on that 4 mix engine. This is open to anyone reading this. thanks RZ
Thanks abd I usually use 3 bond 1184 and make sure everything is very clean! And let it set up over night before you start it! Take your time with applying the sealant! Very important!
