Enforcer 6hp possible?
Ok so I have been looking around and here is what I want.
Bashan Enforcer...supposidly 15.6 HP...do you guys think adding 7hp is possible and I would like to shed 15lbs. Lets hear your thoughts!! |
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Yes, it is very possible. I have seen proof of a CG250 engine making 18whp on a bike, which you could roughly translate to 20 crank hp. What it requires is head work. the ports on these heads suck, and I have a whole thread with pictures showing just how much they suck. The engine in question I am referencing also has a decked head though, which bumped the compression up almost a full point. While I do plan on porting the head, I do not plan on decking the head to that extreme. I will aim for maybe an extra half a point at most. More compression = more heat and stress = reduced life.
This is in fact my goal over winter with my Hawk. I already have an extra head, I just need to get around to doing the port work to it and then taking the time to install it. The cylinder heads themselves are actually not that expensive. I got a complete assembly for $50, and I regularly find them around 50-60 bucks. The expensive part, if you can't do the port work yourself, would be having a shop do the work. Thankfully, since it's a single cylinder 2 valve head, they cost won't be too ridiculous. You could probably call around and get quotes. Likely cost would be around $150-250 depending on what you want done. With a tuned carb, free flowing exhaust and intake, somewhere around 17-18 crank hp is realistic for a CG250 engine. If 20hp is your goal, the last 2-3hp has to be made up on the cylinder head. |
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Megadan...i see what ya dun there, (18whp ..."whopping horsepower"):hehe:
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I haven't seen any dyno numbers on a CG motor but I'd imagine that with simple mods (breather, carb and jetting and pipe), expect about 3??? Porting may help but I doubt with the stock super-mild cam. No reason to open holes if the cam timing will still only allow so much to enter. These things were built for longevity far more than anything. Either way, the standard mods make 'em pretty spunky. These things are much like a 1 cylinder Panhead.
On the QLink, a solid 5 is gained by jetting and muffler. The difference between a pushrod and OHC motor. |
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Not the greatest pictures, and I can't show the area around the valves to well until I decide to disassemble it more, but believe me... these ports leave a lot to be desired. The exhaust port is especially terrible. The reduction in cross section at the valve guides is pretty bad and can easily be cleaned up. Just to toss in my own head porting experience. A better flowing head on a weaker cam profile will always make more, and better power, than a poor head with a radical cam as long as intake velocity is maintained. |
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Back to point, if porting is on the menu, as you know, it needs to be balanced all the way through with breather, carb, jetting, cam and exhaust to really be effective. I'd LOVE to find a cam grinder who'd like to play with a CG cam! :-) |
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