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About chewy619

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  1. By head stays are you meaning the top Mount between the head and frame, #7 and 8 on the fiche?
  2. oh I believe you I'm just wondering how well things worked out when doing it. From everything Ive read the piston from an 08 will work with any crank from 02-08 so should be home free correct?
  3. Has anyone done this? I know they are all the same piston rings cylinder, but the head is what I'm wondering. Any other info would help a ton
  4. I have seen the mods needed for the entire 03 era engines to get into the new frame, I just need to know if the parts r interchangeable with some of the useable 08 parts I have to keep costs down.
  5. Will the 03 bottom ends fit with the 08 head and cylinder and pistons and whatnot? I know there are a few decent 03 bottom ends on eBay right now
  6. So I'm guessing its just 05-08 that will fit? They went to fuel injected in 09 correct? Or is it still the same bottom end? Also what about 450X bottom ends? Will any years of those fit? Or did they have different gearing or whatnot? Sorry for all the dumb questions just trying to get back riding asap on some what of a budget
  7. Hey so had a major meltdown on my 08 CRF450R connecting rod let go and completely destroyed the rod itself, crank and cases I'm hoping to just buy a used bottom end off of eBay with a new piston as the cylinder and head are perfect I know the 08 wasn't the best bottom end with the ignition timing issue with shift sensor it has my question is what bottom ends would interchange with the cylinder and head I have so that I can have a plug and play situation I'm not against getting another 08 bottom end I'm just hoping to get one asap and not sit for a month here I know this question probably gets asked a lot I'm just not finding it when I search Thanks in advance guys, you are saving me here
  8. so no go on that, I was just hoping to get away with the cheaper crank from wiseco
  9. Looking to do a bottom end rebuild on my 06 YZ250F. Can buy a wiseco crank rebuild kit for $100 less thats for a WR. From what I understood the motors were identical on the bottom end. If anyone has any info on that, I'd love to hear heres the link for the crank: https://www.ebay.com/itm/YAMAHA-WR250F-WR-250F-WISECO-CRANKSHAFT-CRANK-KIT-WPC141-03-2012/232325336120?fits=Year%3A2003|Model%3AWR250F&epid=171278630&hash=item3617ab4c38:g:aHEAAOSwax5Yoq9x&vxp=mtr
  10. ok big head scratcher here. rebuilt me wr400, new piston and rings, new gaskets and everything. this is where things go sideways. bike won't run at all but will burp n fart. took the head pipe off and there was coolant in it, enough that you could pour it out. thought it was the head gasket, but i triple checked the torque on the bolts and they were 35 pounds. once I checked the oil from it looks to have coolant in it as well. the bike will start with no coolant in it, I just tried it to make sure I wasn't crazy and that the bike was still good, never ran it for more then 30 seconds with no coolant. is there a chance I have a bad head gasket new? or do I have a crack somewhere in the head or the cylinder causing the issue. if anyone has had this happen let me know and lets see if there is a fix for this
  11. chewy619

    wr400 cam chain upgrade?

    Looking to replace my wr400 cam chain. Should I put a stock wr400 chain back in or did they get better in the 450's? I have an 03 yz450 exhaust cam in it for easier starting. If anyone has any experience putting a different or stock chain in I would appreciate it. Just hoping to make the bike more bulletproof
  12. OK so got the spark arrestor on it, 45 Pilot, 170 Main, and the bike runs a lot better. Zero flames and the head pipe doesn't turn red at all which is a major improvement. Bike still has a few pops on decelleration, and has a minor, minor lag when just cruising and grabbing some more throttle. Should I be jetting richer on the main or the pilot? It seems like I'm right there I just need one more minor adjustment. Could I get it out of my Air/Fuel screw? I'm at 1.5 out, should I turn it in causing a richer mixture?
  13. Also I'm below 1000 feet above sea level so at the minimum I'm going to re jet and see where that gets me along with the spark arrestor
  14. I know the hot start has an oring in it so I will replace it, but the choke doesn't have one does it? Do you have any ideas to get it to better seal? I just purchased a spark arrestor for the exhaust, so hopefully that along with cleaning up the hot start and choke should do the trick Would you do the jetting as well Krannie?