Reimbrandt Posted February 1, 2013 Author Report Share Posted February 1, 2013 K....thnx Quote Link to comment Share on other sites More sharing options...
Reimbrandt Posted February 1, 2013 Author Report Share Posted February 1, 2013 Heres the other side...... Quote Link to comment Share on other sites More sharing options...
Gixxus Christ! Posted February 1, 2013 Report Share Posted February 1, 2013 Oh derp. I'm looking at the alternator rotor in the first pic aren't I? Lol. I'm not super familiar with these motors but why split the cases? Is the knock in the rod bearing or the wrist pin? Can you just pull the pan and UN-cap the rod and swap it out or is it a pressed together crank? If its just piston slap simply replace the wrist pin, circlips and rings, deglaze the jug and slap it back together. Quote Link to comment Share on other sites More sharing options...
Reimbrandt Posted February 1, 2013 Author Report Share Posted February 1, 2013 K.... The left piston can be moved up and down slightly on its bearings where the right one is stable. Wasnt sure if there was any crack shaft damage....... Heres what the pistons look like. Quote Link to comment Share on other sites More sharing options...
Gixxus Christ! Posted February 1, 2013 Report Share Posted February 1, 2013 Ok so its def the rod bearing then? If you can access the crank thru the bottom of the motor via removing the oil pan you should be able to remove the rod and inspect the crank journal if you have a 1-piece crank/2-piece rod type motor. The skirts of those pistons look a bit cooked, like someone ran it out of oil or water, could just be a Shitty pic tho Quote Link to comment Share on other sites More sharing options...
Reimbrandt Posted February 1, 2013 Author Report Share Posted February 1, 2013 No.... The one is pretty scuffed..... Mentioned it to him so hes gonna check tomorrow. Thanx for the advice........ Quote Link to comment Share on other sites More sharing options...
Gixxus Christ! Posted February 1, 2013 Report Share Posted February 1, 2013 Ok, if that's the one with the rod knock it should be ok, if the knock is bad enough they slap around and scuff like that. Check the cyl walls, if they're torn up you may have to either eBay up a good stock jug or find a .030 over kit and a boring mill. Quote Link to comment Share on other sites More sharing options...
Reimbrandt Posted February 1, 2013 Author Report Share Posted February 1, 2013 Ill let him know........... Quote Link to comment Share on other sites More sharing options...
Reimbrandt Posted February 1, 2013 Author Report Share Posted February 1, 2013 Got it figured out...... Missed a bolt under the starter. Block popped right apart...... I beleive he found the problem....... . The one spot on the cam needs ground down a little..... Has some scoring. Have to figure out where we could get that done and how much it will be. Time to shop for some engine parts..... Quote Link to comment Share on other sites More sharing options...
conn-e-rot Posted February 1, 2013 Report Share Posted February 1, 2013 hey I've got these led turn signals sitting around and a set of grips if your boy wants them he can have them.I've also got 2 scorpion hat trick coats black is L blue is XL Quote Link to comment Share on other sites More sharing options...
Reimbrandt Posted February 1, 2013 Author Report Share Posted February 1, 2013 Sweet dude.... The grips and signals would be great. As far as the jackets... He needs to eat more taters. Hes either a small or a medium if hes lucky....... Quote Link to comment Share on other sites More sharing options...
conn-e-rot Posted February 1, 2013 Report Share Posted February 1, 2013 I also have a brand new scorpion exo700 its a woman's helmet but thought maybe you would want to paint it for him its an xs but with liner changes it can go from xs-m Quote Link to comment Share on other sites More sharing options...
Reimbrandt Posted February 1, 2013 Author Report Share Posted February 1, 2013 Well crap.... He already gotta lid. We got a new hjc with the bike..... And its already painted. Quote Link to comment Share on other sites More sharing options...
Gixxus Christ! Posted February 1, 2013 Report Share Posted February 1, 2013 Got it figured out...... Missed a bolt under the starter. Block popped right apart...... I beleive he found the problem....... . The one spot on the cam needs ground down a little..... Has some scoring. Have to figure out where we could get that done and how much it will be. Time to shop for some engine parts.....You mean crank, not cam? Pics aren't coming up for me so I assume you men crank. Idk if you want to grind down crank journals, those are bearing diameters and have very tight tolerances. The reason its knocking in the first place is there is too much clearance between the rod and the crank journal. New crank, new rod and new piston is more likely the proper fix. Quote Link to comment Share on other sites More sharing options...
Reimbrandt Posted February 1, 2013 Author Report Share Posted February 1, 2013 Yeah crank..... Dammit..... Say cam every frign time. Was figuring new would be the best route. Quote Link to comment Share on other sites More sharing options...
Gixxus Christ! Posted February 1, 2013 Report Share Posted February 1, 2013 Or good used. Check eBay. They didn't make too many changes to those motors over the years so I'm sure parts are available, and its a very popular bike so they shouldn't be too expensive. Quote Link to comment Share on other sites More sharing options...
Gixxus Christ! Posted February 1, 2013 Report Share Posted February 1, 2013 Quick search puts you at around $200 for parts. You may be able to find a better deal on a crank if you look harder. Pistons and rods are $60/full set. Happy hunting. Quote Link to comment Share on other sites More sharing options...
Reimbrandt Posted February 1, 2013 Author Report Share Posted February 1, 2013 Schweeeettt.... I had noticed on the one quick search i had done that parts are very reasonable. That makes mama happy too...... Im gonna have him replace the timing chain while hes at it. That way when its back together its right the first time. (Hopefully) Quote Link to comment Share on other sites More sharing options...
Gixxus Christ! Posted February 1, 2013 Report Share Posted February 1, 2013 Hey might as well. I'd check the valve seating while you're in there. Put plugs in the head, flip over and fill combustion chambers with mineral spirits. Let sit for a day and see if any leaks out. If it does, valves need lapped. Cheap easy job. Quote Link to comment Share on other sites More sharing options...
conn-e-rot Posted February 4, 2013 Report Share Posted February 4, 2013 PM your info and I'll get the turn signals and grips in the mail 2 Quote Link to comment Share on other sites More sharing options...
Reimbrandt Posted February 4, 2013 Author Report Share Posted February 4, 2013 PM sent...... Quote Link to comment Share on other sites More sharing options...
bowdog Posted February 4, 2013 Report Share Posted February 4, 2013 PM your info and I'll get the turn signals and grips in the mailway to help out a newcomer!! +rep Quote Link to comment Share on other sites More sharing options...
Reimbrandt Posted May 13, 2013 Author Report Share Posted May 13, 2013 Well the kid got the bike running...... Cost wise it was better to replace the engine than buy all the parts to rebuild it. Ecspecially since i was able to pick up a 99 250 engine with all the electronics and radiator for $175. So at the moment we have under $500 in the whole build. Now for paint........ . hes decided to go green motor and green exhaust (mufflers) with the body flat black with old skool green/white pin stripes. There are some cool head lights so its goin street fighter. Should be a cool little bike Quote Link to comment Share on other sites More sharing options...
Tigerpaw Posted May 13, 2013 Report Share Posted May 13, 2013 Parenting ... Reimbrandt is doing it right!Cool story. Quote Link to comment Share on other sites More sharing options...
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