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lilroadrunnerguy Added a reply to 1980 IT175 jetting
3/24/2025 6:37pm I've just pulled off the stator cover to check, looks like timing marks are all lined up.
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lilroadrunnerguy Added a reply to 1980 IT175 jetting
3/24/2025 5:56pm I swapped the needle and needle jet to 6dh4 159q2, no real improvement. Seems like major jetting changes aren't giving me much difference. Really hoping it's not electrician as id like to run this bike in a race next week... Ice ordered a new cdi and coil to try to eliminate those as potential problems. I do have the manual...
lilroadrunnerguy Added a reply to 1980 IT175 jetting
3/24/2025 5:34pm As far as throttle position goes, RPM stopps climbing at about 1/3 to half throttle without a bog. Slight improvement switching out the 210 main for a 165. I'll try swapping out the needle and needle jet for leaner set.
lilroadrunnerguy Added a reply to 1980 IT175 jetting
3/24/2025 3:22pm I'll have to take it to a friend of mine with Guage like that. I checked the oil level and it is still full. I've tried going back to the stock jet sizes which are much bigger but are now giving me a clean plug. The new issue is that rpms do not increase past half throttle, just before going...
lilroadrunnerguy Added a reply to 1980 IT175 jetting
3/23/2025 9:48pm Pressure test meaning compression?
lilroadrunnerguy Added a reply to 1980 IT175 jetting
3/23/2025 3:58pm I've replaced the seals in the engine, so I dont think that's the case. I'll have to check the oil level to confirm.
lilroadrunnerguy Started a new thread 1980 IT175 jetting
3/23/2025 2:39pm Hey all, I've just about finished restoring my 1980 it175, but the jetting here is causing me to scratch my head. I've leaned it out a whole lot and it still seems to be running rich, returning blackened plugs after each short ride. Power delivery seems fine enough with these jets. At an elevation of 5200, here are the current...
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