5
5-7HEAVEN
Guest
Mine's sputter too.
I had no problems with my 1.6 hp Robin, but my new Mitsubishi 2.2hp engine sputtered and fell flat on its face at the top end ...ALL the time. I tried the engine with friction drive and gear chain drive, with same results. The spark plug looked okay, but I replaced it anyway, with no results.
Just for kicks, I removed the ADA-1 goped pipe from my pocket bike engine and bolted it onto my Mits engine in one hour. I expected the engine to become much louder, but it's actually a little quieter, and with less engine vibration at idle. It has that "tinny" sound of old V8 headers at idle.
The low-end might've suffered a bit, the midrange power gained a little...and the top end is simply AWESOME. If allowed to, the Mits engine will now rev past its redline, so I have to be careful. There is absolutely no sputtering or falling flat on its face anymore.
Originally, I had thought maybe that this engine had a governor. I now believe my problems were caused by excess exhaust backpressure from the stock muffler.
I did have to saw off the pipe's mounting bracket to get it to fit. Everything else fell into place, after replacing the long exhaust studs and trimming the plastic exhaust cover.
I'm super happy with the ADA-1 goped pipe.
5-7
I had no problems with my 1.6 hp Robin, but my new Mitsubishi 2.2hp engine sputtered and fell flat on its face at the top end ...ALL the time. I tried the engine with friction drive and gear chain drive, with same results. The spark plug looked okay, but I replaced it anyway, with no results.
Just for kicks, I removed the ADA-1 goped pipe from my pocket bike engine and bolted it onto my Mits engine in one hour. I expected the engine to become much louder, but it's actually a little quieter, and with less engine vibration at idle. It has that "tinny" sound of old V8 headers at idle.
The low-end might've suffered a bit, the midrange power gained a little...and the top end is simply AWESOME. If allowed to, the Mits engine will now rev past its redline, so I have to be careful. There is absolutely no sputtering or falling flat on its face anymore.
Originally, I had thought maybe that this engine had a governor. I now believe my problems were caused by excess exhaust backpressure from the stock muffler.
I did have to saw off the pipe's mounting bracket to get it to fit. Everything else fell into place, after replacing the long exhaust studs and trimming the plastic exhaust cover.
I'm super happy with the ADA-1 goped pipe.
5-7