Thanks for every answer for this hybrid motor. now i'm sure that it's not a MC21 engine may be 18 or 28 and do wiring GPS's 3rd gear to earth all time will effect side stand switch safety function? so let try ..
Now.. my crankcase was splitted for replacing of bearing, connecting rod and sealer and I notice that lower cylinder inlet( right carb) has an excess lug that result the right inlet area is less than left inlet area about 30%!! I can't find the way to attach the picture along but I can really say it's much smaller.>(30% by sight.. about 7-8 mm each side and top side) should both inlet look similar? ?What result the designer aim from these lug? port velocity or it's just a restriction?
Could I take some benefit if those lug are grinded off ?
please let me know ..every idea are very welcome > I'm trying to make this bike's great run as far as possible
.... and how could i know that a oil and power jet solinoid are work properly?? .... very thanks
We really need to see a picture, but you dont want to be grinding anything off the inlet tract - at least on any of the later models (MC18, MC21, MC28).
I've not had a good look inside an MC16 yet, but I suspect it's a similar story there too. _________________ Andy.
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If it is a ramp type off thing just at the point where the crankcase flows into the crank dont remove it it is supposed to be their. I had a post on here about January time titled mc21 crankcase cleanup. Matt from Tyga replied and advised not to touch it.
All the NSR cases are like that where one side is narrower than the other. It absolutely does not restrict airflow. I believe what it does is make the crankcase volumes more equal between the two cylinders. _________________ Paul Herr
'88 FZR4/GSXR/YZF Frankenbike
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