Search results

I went to the track to run the motor on the stand. No one complains about the noise :). I think the oil "spray" is droplets of oil from the valve cover being blown by the air off the cowl. There is a few drops soaking into the rag on the tube with the one way valve on it, but certainly nothing...

Very good to know the one way valves are both out :ROFLMAO: that might have made a difference. I installed with 1 valve to start with during break-in. I ordered a pressure gauge too. Yeah my gas is 93+ but I'll leave the compression as it is for now. I buy the 92 and add 5ml/L of octane boost...

I have 2 engines with different heads. I'm going to focus on the engine with 27mm intake and stock exhaust port. I forget if this is a stock GX200 head and I milled it down or if it's 168F head. I did try milling down a head but I forget if I used it or not. I checked the volume to be about 15CC...

Wow, that's an amazing amount of info, I'll go through it step by step. Can't thank you enough for taking the time to help me get this going. Yes these engines are very ambitious for my experience level. It's not surprising they don't work properly. A few videos, a little reading and here I am...

No, it seems to all be clear. I have a cut-away side cover I use to check and the rod clears everywhere. I'll make sure to check that each time I assemble. It's good advice thanks

Thanks for the pics, I get it now. From the vavle cover, 1 tube is intake air with a one way valve and 1 tube is air/oil out through a one way valve to the catch can. I'll rig something similar up and try it. I'm very hopeful this will get my engine running reliably. It sure sounds like a big...

I believe it's very rich, I haven't had a great amount of running time to tune the carb but I have an oxygen sensor + gauge arriving next week. I'll get that under control. I welded up an exhaust pipe for the sensor today. I also made one with springs. I had some cracking on my last exhaust...

That makes perfect sense about the valves, I will measure it and make sure to have at least .030". I haven't decided if I'll machine the piston to clearance the valve or just use a thick head gasket. You are 100% correct that changing one thing at a time is best. I have been progressively...

Thanks so much for the detailed reply, and thanks for compliment about the kart. It's a ton of fun, more so when the engine is working :D I'm a bit unsure of the exact setup for the one way valves for releasing the crank case pressure, do you have a picture you can share? I've already ordered...

Hi Everyone, I'm a relatively new engine builder. Relatively means I've blown up 3 or 4 engines... My current setup is: GX200 Decked Block (0.8mm) Flat top piston GX160 Head (mildly ported, removed sharp edges and increased bowl size to match 27mm intake valve) 27mm intake 24mm exhaust Stock...