Greetings fellow dirt riders and kdx riders.
Well, here in rainy, grey Ohio we had a freakish 55 degree day in the middle of January this Sunday. Of course my riding partner and I loaded up the rusty 86 chevy ( Oh, thats another great feature of Ohio -- your vehicles are destroyed by salt ) for a day of riding at Wellsville, OH.
I sent my cylinder out to Eric Gorr to have a L.A. Sleeve 240 kit installed, and a "more low-mid" porting job. Previously my bike was a stock 200 with FMF k-30 REV pipe and turbine core silencer.
Eric was very fast on the turnaround of the cylinder. Only "things" I noticed were: the cylinder head water jacket was installed backwards, there was a few gasket fragments left on the head that I had to scrape off, and the final one I have not looked into yet -- but it appears that the ignition side of my KIPS valve is experiencing lot of blowby as there is a black stain on the cylinder around it. I'm wondering if maybe Eric forgot to ut a gasket on it?, but I havn't checked yet. I am happy with the work, speed and price Eric performed overall.
While I am sure the bike needs jetted after these significant modifications, here are my impressions after break-in anyway:
The bike makes an incredible amount of low end power now. It starts easily and has good throttle response. There is a very mild surge in the midrange. It feels to make almost xr400 like bottom end. The bike just signs off and hits a brick wall before the mid range is even over though. In my opinion the power gained does down low clearly does not make up for the *complete* loss of any top end. Many threads I have read suggest that it is the k-30 that is causing this "brick wall" sign off behavior. This may be so. Unfortunately I don't have the REV pipe anymore to do a comparison. I may buy another one though. Right now, if I wanted to do a quick moto I would feel very intimidated to try it now, because the bike seem so slow. The bike is a SUPERIOR hare scrambles machine now, and that is why I did these mods. I don't need the top end, I just sort of missed it.
Well, here in rainy, grey Ohio we had a freakish 55 degree day in the middle of January this Sunday. Of course my riding partner and I loaded up the rusty 86 chevy ( Oh, thats another great feature of Ohio -- your vehicles are destroyed by salt ) for a day of riding at Wellsville, OH.
I sent my cylinder out to Eric Gorr to have a L.A. Sleeve 240 kit installed, and a "more low-mid" porting job. Previously my bike was a stock 200 with FMF k-30 REV pipe and turbine core silencer.
Eric was very fast on the turnaround of the cylinder. Only "things" I noticed were: the cylinder head water jacket was installed backwards, there was a few gasket fragments left on the head that I had to scrape off, and the final one I have not looked into yet -- but it appears that the ignition side of my KIPS valve is experiencing lot of blowby as there is a black stain on the cylinder around it. I'm wondering if maybe Eric forgot to ut a gasket on it?, but I havn't checked yet. I am happy with the work, speed and price Eric performed overall.
While I am sure the bike needs jetted after these significant modifications, here are my impressions after break-in anyway:
The bike makes an incredible amount of low end power now. It starts easily and has good throttle response. There is a very mild surge in the midrange. It feels to make almost xr400 like bottom end. The bike just signs off and hits a brick wall before the mid range is even over though. In my opinion the power gained does down low clearly does not make up for the *complete* loss of any top end. Many threads I have read suggest that it is the k-30 that is causing this "brick wall" sign off behavior. This may be so. Unfortunately I don't have the REV pipe anymore to do a comparison. I may buy another one though. Right now, if I wanted to do a quick moto I would feel very intimidated to try it now, because the bike seem so slow. The bike is a SUPERIOR hare scrambles machine now, and that is why I did these mods. I don't need the top end, I just sort of missed it.
