RIPRuck Posted August 30, 2007 Report Share Posted August 30, 2007 I just purchased this cover and impeller and noticed this.. Are any of the two damaged or is it supposed to look like this? Would you chance running it like this? Quote Link to comment Share on other sites More sharing options...
peak-j Posted August 30, 2007 Report Share Posted August 30, 2007 I don't think I would run that if it was me. Looks like quit a bit is gone between the case and the impeller. Might leave a good size gap in there that could mess up the flow of the coolant, could possibly cause it to run hotter. Quote Link to comment Share on other sites More sharing options...
TurboBanshee420 Posted August 30, 2007 Report Share Posted August 30, 2007 I rounded the impellar fins over slightly on the edges and then polished it (edges) on a wheel before I installed mine. just for that reason. Quote Link to comment Share on other sites More sharing options...
FasterThanU90 Posted August 30, 2007 Report Share Posted August 30, 2007 looks fine to me, as long as theres no slop in the shaft Quote Link to comment Share on other sites More sharing options...
RIPRuck Posted August 30, 2007 Author Report Share Posted August 30, 2007 looks fine to me, as long as theres no slop in the shaft No theres no slop in the shaft.. Didnt get to take my stock cover off to look at the plastic impeller but I'm guessing a gear goes on the other end where the c-clip is on this one. There's also a hole on the other side of the shaft which my stock pin should fit correct? Quote Link to comment Share on other sites More sharing options...
TurboBanshee420 Posted August 30, 2007 Report Share Posted August 30, 2007 correct. If you want to check how much material is gone there you can drop the imp. back in and put a straight edge across the casting where the cover goes and it should be around .025-.040 inches. Unless the imp. REALLY eats the cover I wouldn't worry about the gap more than I would be worried about the gawling. Try to smooth the surface with some 360-600 grit sand paper. then take a real small flat rasp (file) and very lightly smooth the edges of the imp. on the cutting edge. also if your doing the high flow imp. then you should check out the casting inside the coolant passage. I remember reading an article written in dirtwheels that was about dean sundauls 10x winning baja banshee. he said that most of the castings made by yamaha are crap and you will find a bunch of flashing and mismatched mold material in the coolant passage on the cover right under the imp. inlet and on the corner going toward the motor on the pressure side. Check it and if it's there then get out the dremel or other rotary and remove it. I also took out the dremal and ported the coolant passages on the stock head and jugs. I didn't go crazy, I just cleaned them up and opened'r up a bit. Too much and the water won't do it's job. Quote Link to comment Share on other sites More sharing options...
Bansh-eman Posted August 30, 2007 Report Share Posted August 30, 2007 looks normal to me. your going to have a little bit of wear... nothing out of the ordinary... Quote Link to comment Share on other sites More sharing options...
RIPRuck Posted August 30, 2007 Author Report Share Posted August 30, 2007 As always thanks guys!! Quote Link to comment Share on other sites More sharing options...
jbooker82 Posted September 1, 2007 Report Share Posted September 1, 2007 It should pump fluid better since the tolorances are tight. Quote Link to comment Share on other sites More sharing options...
KaosBanshee44 Posted September 1, 2007 Report Share Posted September 1, 2007 Looks like mine did, no problems here i wouldn't worry about it. I got all new seals and bearings when i put mine on as well. Quote Link to comment Share on other sites More sharing options...
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