The turbo install is several degrees easier than the process of adding a crank pulley, clearancing the amr, pulley alignment, draw through cutout etc etc etc. Next is forced induction either the amr300 roots style super charger or the VZ21 turbo, though the supercharger would be easier to tune. Also there are several examples of performance gains on small engines from e85 that can be found online.
These engine are clearly loosing efficiency to heat, running e85 would theoretically correct this to an extent and net power just from less energy wasted converting to heat. Power gains on this are as with any NA e85 application, questionable but the cooling effects are not. As previously mentioned I am considering switching over to e85 (tested each time for purity, not allowed to sit extended periods of time, carb replaced/rebuilt as needed and up jetted). I figure lightening the stock one (outside of areas needed for stator) either through cnc or simply drilling the back area in a proportional manner to ensure balance should create an increase in response. As there is not one commercially available *yet*.
#Honda cg engine performance parts mod
Next thought lightened flywheel, this seems to be a go to mod for a lot of the other small engine platforms. It seems some have gone hollowed stem (more costly unless you have a capable drill/equipment) while some examples I have seen are dimpled on the rounded portion above where contact on the cylinder head is made (yes this is more so an air movement mod). But with the ease of work and low cost of parts why not at least discuss it. First thought is lightened valves, yes this will without a question increase maintenance. I am simply contemplating how far this platform can be taken as I cant help myself. Before I continue this rambling let me first say I am not considering costs of part/mods v.s the cost of the bike, or shortening the life of the engine. But it seems, that is about as far as anyone has taken it. WGK camshaft gets ordered tomorrow after I get paid, when that goes in I will dimple and port the head as well as deck off 1.3mm and maybe a thinner homemade head gasket (running 93 with a booster or going to e85). Intake mod, vm26 carb, 14t front (not going for top speed) are done. This is my first post but I have been lurking for the last 6 months or so, picked up my hawk a few months back and have been planning out mods.
First off huge thanks to the individuals on here who have worked towards getting more out of their cg250 I picked up a lot from you all so.
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