May 1, 2020 · I'm building a ground-up go kart/mini-buggy, and I plan on running a "Stage 2" Predator 420. I know this forum mostly talks about small blocks, but there must be someone …

Feb 17, 2022 · With that in mind, is the GX390 a better built engine than the Predator/clone versions? Should I cough up the extra money for a Honda over the Predator/clone? This sled …

Mar 4, 2014 · the 730 is a stock block engine with a head that may or may not be the rtc-06 (the big valve head). the 636 is the hemi-head predator and is fast becoming a rare item to find.

Aug 21, 2018 · The Motor Predator/Lifan 420cc OHV engine With or without Electric Start – Approved Engines: OHV Predator part # 60340 (non-hemi) or Lifan 420cc engine part #’s …

Sep 14, 2016 · Carbs are interchangeable, but the 390 carb has a slightly smaller venturi, throttle bores are the same. I swapped a GX390 carb (real Honda Keihin, not chinese replacement) …

Jun 5, 2020 · Putting a 420 in a golf cart burning mid grade gas,have to run the kart type airfilter and robertson pipe for cart and a stock rvl muffler ..what size should my jets be..thanks in …

Jul 18, 2016 · Otherwise it has been the perfect engine. The 9 year no longer fits the roll cage of the 212 car so I decided to build her a bigger version powered by the 420 using a Comet …

Nov 15, 2013 · The engine in question in this thread uses a rpm deactivated compression release which holds the exhaust valve open near tdc on the compression stroke. This requires a …

Jan 5, 2014 · I plan on putting a 420 on a racing mower. Now what I need to know is the torque specs and does the govenor look the same on the inside as the 212?? I have heard that you …

Jan 31, 2016 · I was noticing that people set them from 30 to 70,can I expect to c a difference in performance from 30 to 50 to 70, this is on a restrictor plate engine,Thanks just trying to learn …