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firebreathinCR

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About firebreathinCR

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  1. Cause it looks &%$#@!in sweet
  2. firebreathinCR

    Lets see your before and after pics!

    Still more to do but for $350 just needing rings it looks like new
  3. How's it going all First things first, links to the vids and junk will be at the bottom Was just out driving locally down some back road that I work off of and saw a red dirt bike parked near the street. Being a fan of dirtbikes and such I hit a U-ey in the street and pulled in and saw a nice mid 2000's Crf230f with a hardly legible sign on it, reading: "$350. Needs Battery and airbox. Smokes so its burning oil. -picture will be attached i was like jinkies what a great deal. So i saved the pic and told my buddy abiut it and he had the cash so we went over and checked it out after work and the guy jumped it for us, got it to idle, (clip also will be linked) and test drove it for us. So everything checked out and we decided it was a deal. Came with the title and the manual as well. It ended up being a 2005 and mind you when the man and his son noticed the smoke 2 years ago they immediately stopped riding the bike however they left the same gas sitting in it. Got it home, spent a couple hours hosing it off and scrubbing it down with magic erasers and junk, and then I went home. woke up the next day and luckily i work with this friend so after work we popped a new battery in it ($40 at Oreillys. 5L-BS) and it started right up, still smoking. Added some gas with the tiny bit of gas that was left in the tank from 2 years ago, shook it up, and it smoked significantly less, ran much better however was still smoking. So we messed around on it getting it up to like 3rd down his road and yard because we didnt wanna go to hard on it with it smoking like that, we knew the rings had to be bad (hopefully that was the problem). He puts a can of seafoam thru it to see if that helps anything. No big difference. So next day I go to california on vacation but my friend tore into the engine, checked out the internals (just the cam and top end) bought some new rings cause the existing ones looked shot, and put it back together. Smoke was instantly clearing up then gone he says. Got back from vacation and went over, and he had also put some new bars on it & some stickers of course hahah. So it starts right up, sounds pretty good n grunty, idles super super solid, and not a puff of smoke anywhere. I get on for a ride after him and it immediately feels so much better and I cant tell you how relieving it is for it to have been such a cheap fix and not some cylinder damage or anything. Anyways, im going to attatch some links of some videos, and I will have the pics as well. Thanks for reading!! Anyone have any advice or tips/helpful knowledge about this thing? And I gotta say for 19hp this thing can handle its shit. Videos at bottom. Matt Original owner starting w/choke Erik cruising after fixing piston rings Little montage with me riding at the end too
  4. firebreathinCR

    New Seized-Crank '90 Yz125 Project Bike (Noob, Need Advice)

    Its a comin, lol i had some other mom and pop shop tell me itd be 400 plus labor for the crankshaft but he did take the engine apart for me, says everything else looks good so i told him ill be getting the crank seperate and bringing it to him to put in, so im currently trying to find one (86-88 are compatible) for it
  5. firebreathinCR

    New Seized-Crank '90 Yz125 Project Bike (Noob, Need Advice)

    Also, should i attempt to free this crank up with some brake parts cleaner/kerosene before anything?
  6. firebreathinCR

    New Seized-Crank '90 Yz125 Project Bike (Noob, Need Advice)

    Question, i got the engine back, he pulled the clutch side off no problem, curious if i can split the crank case with your method without a flywheel puller? Looks like the flywheel needs to come off before i split it down the middle. Edit: if im gon a bust it open that way, can you share with me everything you disassembled before doing so? All cables, oil caps, etc
  7. firebreathinCR

    New Seized-Crank '90 Yz125 Project Bike (Noob, Need Advice)

    I feel it, my dumbass didnt know the swingarm had to be supported when i was taking it off and i flipped when i saw what was going on, i ended up doing it with the bike laying down, super sketchy. What can i use to support the swingarm when i put it back together after I hammer the pin out?
  8. firebreathinCR

    New Seized-Crank '90 Yz125 Project Bike (Noob, Need Advice)

    Much much appreciated. Learning this stuff 1 step at a time here lol.
  9. firebreathinCR

    New Seized-Crank '90 Yz125 Project Bike (Noob, Need Advice)

    Thanks. Quick "single cylinder crankshaft" google search showed me exactly what i was wondering. So yeah, its gotta atleast be the main bearing, cause the rod moves just fine just wont cycle. These old geezers got me worrying too much.
  10. firebreathinCR

    New Seized-Crank '90 Yz125 Project Bike (Noob, Need Advice)

    Anyone got a picture of the difference between the rod bearing and main bearing? Rod bearing is obvious but ive never seen inside a crank so i dont know what allows it to cycle. Just doing some thinking and if it was JUST the rod bearing, wouldnt it still turn over?
  11. firebreathinCR

    New Seized-Crank '90 Yz125 Project Bike (Noob, Need Advice)

    Gotcha. If they come at me with some crazy "its jacked" bs ill be like ALRIGHTY coming to pick it up and tear it down myself now that i have the $ for the tools. Impatience is my biggest enemy. Im dreading waiting for tools in the mail but if its what i gotta do, i will.
  12. firebreathinCR

    New Seized-Crank '90 Yz125 Project Bike (Noob, Need Advice)

    UPDATE: I was about an hour away from ordering a new crank setup for it. Then my grampa calls me saying dont order anything yet let me open the case and make sure of whats going on with it. Ill be there within the hour to get it. I said sure it cant hurt. So i gave the engine to my grandpa who is an expert on anything with a motor and he and his brother are going to split the case tomorrow and try to diagnose it. My uncle used to fix Triumphs and shit and my grandpa retired from GM so before i go ordering parts theyre going to try to unfreeze the thing. They told me they looked at it briefly today and see a lot of rust on everything, and think it was ran without oil. There is hardly any play on the con rod, hardly any at all. They are afraid due to the rust and the lack of play and how OK everything looks that it couldve ran without oil and everything just swoll up and froze. Tomorrow they will be opening up the cases and checking all the bearings and what not as well as closely inspecting all the parts of the crank. Best case scenario, he calls me saying they got it to turn over and it was rusted out or jammed up real good. Second best, they say yeah your crank bearings shot its gonna need rebuilt or need a new one. Third/worst, they tell me the thing is rusted out from the inside or completely jacked from running without oil and everything is sort of destroyed. One last note, there is some mild chipping around the edges of the top of the piston, i thought that could be due to the rod bearing failing resulting in enough vertical play for my piston to smack the cylinder head. They said noo it doesnt have near enough play for that. Theres also a bit of light vertical scoring in the cylinder, just enough to be able to see it when you shine a light directly into it. I am stumped about this. I took it to a shop and they shined a light into it through the top and said yeah we gotta rebuild this crank, $450 dollars please, so i said hmm that was sort of a quick diagnosis without taking the case apart so i took it home and thought long and hard about what to do next. I am afraid they just wanted money because of how quick they diagnosed it and they probably thought i was naive and inexperienced enough to just throw money at them. But now i am considering that they were correct as well (however i could get it done much cheaper). I need some real tips on what to look for here guys. I guess we wont know until they take that case apart right? Im bummed because i was ready to just order a splitter, puller, and a whole new 87 crank and go to town but Im glad someone slowed me down. At least i hope, cause who knows if I had it right or not. Im going to give my gramp and uncle a couple days with it and if they dont figure it out i'll grab it back from them and go rent the tools from home depot and do it myself because i seem to have good luck getting to the bottom of mechanical problems and it seems like everyone else i trust just gives me anxiety about it lol. I feel the best doing things on my own and always seem to make it work. So right now im in limbo, because I havent had the tools to open it up myself and im just waiting for a call back from my grandpa and uncle to see what they find. Edit: the counterweights dont look that rusty to me, just the rod, flywheel, sprocket etc. I bet this thing just got some water in it after whichever dummy before my tried to check it out and gave up. Probably left it out and got wet. Thats wishful thinking i know. We will see.
  13. firebreathinCR

    Crankshaft for '87 yz125, what years will work?

    I gave the engine to my grandpa who is an expert on anything with a motor and he and his brother are going to split the case tomorrow and try to diagnose it. My uncle used to fix Triumphs and shit and my grandpa retired from GM so before i go ordering parts theyre going to try to unfreeze the thing. They told me they looked at it briefly today and see a lot of rust on everything, and think it was ran without oil. There is hardly any play on the con rod, hardly any at all. They are afraid due to the rust and the lack of play and how OK everything looks that it couldve ran without oil and everything just swoll up and froze. Tomorrow they will be opening up the cases and checking all the bearings and what not as well as closely inspecting all the parts of the crank. Best case scenario, he calls me saying they got it to turn over and it was rusted out or jammed up real good. Second best, they say yeah your crank bearings shot its gonna need rebuilt or need a new one. Third/worst, they tell me the thing is rusted out from the inside or completely jacked from running without oil and everything is sort of destroyed. One last note, there is some mild chipping around the edges of the top of the piston, i thought that could be due to the rod bearing failing resulting in enough vertical play for my piston to smack the cylinder head. They said noo it doesnt have near enough play for that. Theres also a bit of light vertical scoring in the cylinder, just enough to be able to see it when you shine a light directly into it. I am stumped about this. I took it to a shop and they shined a light into it through the top and said yeah we gotta rebuild this crank, $450 dollars please, so i said hmm that was sort of a quick diagnosis without taking the case apart so i took it home and thought long and hard about what to do next. I am afraid they just wanted money because of how quick they diagnosed it and they probably thought i was naive and inexperienced enough to just throw money at them. But now i am considering that they were correct as well (however i could get it done much cheaper). I need some real tips on what to look for here guys. I guess we wont know until they take that case apart right? Im bummed because i was ready to just order a splitter, puller, and a whole new 87 crank and go to town but Im glad someone slowed me down. At least i hope, cause who knows if I had it right or not. Im going to give my gramp and uncle a couple days with it and if they dont figure it out i'll grab it back from them and go rent the tools from home depot and do it myself because i seem to have good luck getting to the bottom of mechanical problems and it seems like everyone else i trust just gives me anxiety about it lol. I feel the best doing things on my own and always seem to make it work. So right now im in limbo, because I havent had the tools to open it up myself and im just waiting for a call back from my grandpa and uncle to see what they find. Edit: the counterweights dont look that rusty to me, just the rod, flywheel, sprocket etc. I bet this thing just got some water in it after whichever dummy before my tried to check it out and gave up. Probably left it out and got wet. Thats wishful thinking i know. We will see.
  14. firebreathinCR

    Crankshaft for '87 yz125, what years will work?

    Thanks a lot. Does the con rod come with the bearings? Ill need? Check it out
  15. Hey all, I have been waiting for this day for quite a while. I am finally able to fix my bike, i've been in debt for some time but the day has come Now i have a question, when I got my bike checked out at the shop, i was told i could rebuild my crank with any rod and bearings from 1986-2000. I am going to purchase an entire new hot rods crank instead. Am i able to order any crank from 1986-2000 for my bike? Mine is a 1987. I just want to make sure I am getting the correct part before I spend the money! Appreciate any replies or help. Thanks!!
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