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  1. General 660 Discussion
    Hello, I have been having issues with head gaskets. I put a OEM on. I didn’t realize the fan wasn’t working and I think it got too hot and blew the head gasket letting coolant into the combustion chamber. Took the plug out blew and little coolant that was in there out. Got the fan working but...
  2. Raptor 660 Modifications
    Hey guys, screwed up big time. Broke the back of the valve cover when taking it off. I feel pretty stupid apparently I missed the two under the cap. And I was going by the book. Is this repairable with a good TIG welder? Any thoughts ? I REALLY don’t want to buy a whole new setup.
  3. General 660 Discussion
    So the head cover didn’t have a gasket and the cylinder head had 2 gaskets stacked. I accidentally busted the head cover.😞 Can I just replace the cover or do I have to do a whole new valve case and cover?
  4. Raptor 660 Maintenance
    Needs quite a bit of cleaning. Looks like previous owner had #25s and 160 & 165s. I will be doing a 148 and 150. Would it be better to use the larger ones or stick with the dynojets 148 & 150
  5. General 660 Discussion
    I noticed my coolant going down. And I think it’s causing some smoke in the exhaust. Head gasket?
  6. General 660 Discussion
    Hey guys, mom getting some smoke on idle. Seems to clear up when given some gas. Any thoughts? It does have new muffler packing and new oil and coolant.
  7. Raptor 660 Modifications
    Hey guys, I ordered some 25 jets from jets r us and they refunded me. So I reordered them again lol I’m guessing they are out of stock. Does anyone know where else I can find them. They are the last pieces I need for the jetting rebuild. Also I have my chain off since I put new sprockets on...
  8. Raptor 660 Modifications
    My 660 has a flow muffler. I can’t find it anywhere on line. Any thoughts? He had done quite a bit of other add ons like extended swing arm, oversized oil reservoir and front and back bumpers
  9. Raptor 660 Modifications
    I ordered the wrong chain size a 92 and I need a 108. Where can I get a 108 link chain?
  10. Raptor 660 Maintenance
    Hey guys, I’m going to order a manual. Does this one below look like the correct one
  11. Raptor 660 Maintenance
    Hey guys put a new drain plug in so I drained all the oil since I ran it last. Oil was whitish what do I need to do to fix this issue? Ua
  12. Raptor 660 Modifications
    Ok I took a ton of pictures. Apparently it has/had I took it off a 520 ATV chain. 13 on the front and a 44 on the back. I ordered a 12 for the front and 42 for the back. I will probably do an O ring chain. Stupid question but how do you count links ? Each fill link and the connecting bracket...
  13. Raptor 660 Maintenance
    Any idea of the size of rivets? How do I measure them? Width of the head?
  14. Raptor 660 Maintenance
    I want to clean and polish every inch of Aluminum on my Raptor. Some areas are worse thank others. As far as I can tell it’s the oil reservoir, exhaust muffler, exhaust guards, clutch and brake levers, wheels, license plate bracket, carb, cylinder, head, back grab bar, front bumper, probably...
  15. Raptor 660 Modifications
    Hey guys, I am planning on replacing the rear and back sprockets with a new chain. Can someone explain to me what does the different amount of tooth’s do? Not sure what to pick. My plan it to highly modify my raptor as time goes on.
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