Jblaze86 Posted March 28, 2023 Share Posted March 28, 2023 Hi peeps I’m thinking about upgrading the engine for my trophy truggy f4.6 to a savage 5.9, is this a good idea or should I bin the idea ? Quote Link to comment Share on other sites More sharing options...
locky Posted March 28, 2023 Share Posted March 28, 2023 Never had one, but if you research then I think some had issues, think it was the carb. Dont think you really need the extra low down torque in a truggy, so I would stick to 28/4.6 engine. If your spending £170-80 on a new HPI 5.9 then I would get LRP28 spec 4 which is cheaper. Quote Link to comment Share on other sites More sharing options...
locky Posted March 28, 2023 Share Posted March 28, 2023 It was the K5.9 that wasnt so good as the new F5.9 is a rebranded Force 36 engine, which are typically reliable. Remember larger engines will drain your fuel tank quickly just for faster acceleration which maybe at the detriment of driveability. Quote Link to comment Share on other sites More sharing options...
Nitroholic Posted March 29, 2023 Share Posted March 29, 2023 Really not worth it. The Force .36 went through a period of iffy QC with a run of blown cranks, but if you get a good one they are fine. Just not that powerful. Plenty of torque....but in a Trophy, you won;t notice the benefit. It will, however, drink the fuel a lot faster. If you want to go for more speed, get a good .28 ( the stock HPI option is OK, but its a cooking RTR motor, so not in a high state of tune ) like the LRP Spec4 ... or if you really want a bit more of the ole 'cubes' ... go for the LRP .32. Botrh will give you a big chunk more power than your stock motor, and more than the big 5.9 engine. Plus they won;t empty the tank quite so fast. Quote Link to comment Share on other sites More sharing options...
mickturnip Posted April 1, 2023 Share Posted April 1, 2023 I have a lrp32 spec 2 bnib £120 .it's not the spec4 with the awkward carb 1 Quote Link to comment Share on other sites More sharing options...
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