My second love has what seems to be a terminal disease; I am only talking about mike bike though.

Seems to be a rocker arm and crankshaft problem and my valve job did not help it. I took it to a shop called Mach 1 in Costa Mesa, most riders in so-cal seem to know about it, well it is the only shop where I have ever left with the confidence that the work was done properly and not just Bull sh%tted.

The owner test rode her and used a stethoscope to listen to exactly where the noise is coming from and it was not on top by the valves. Says due to the 50k already on the motor and the symptoms it would be better to look for a used motor and do a swap.

Says that I could probably replace the rocker bearings and the problem would go away but if there was even the slightest imperfection to the crank it would be back shortly and that was costly about 2k

New crank, rocker pistons and rings will cost about 1,200.00 , then the labor to install, then new valve adjust, timing, and just regular tuning will come in around 3k. Looking at all those parts because there is a lot of blow-by so I am assuming that at least one piston has a lot of compression lose and need to have the rings replaced. So if I get that far spending that kind of cash might as well do all 4.

Not a good day, I thought I would be riding next week even if he was busy and asuming it was something like bad timming or valve.

Dam so is it replaces parts used motor or new bike. F&%king A.

 

Sorry to hear the news, NS. Unless you have a lot of expensive aftermarket parts on your bike, I'd be inclined to buy new. No point throwing good money after bad. But if you've got a lot of money tied up in it, then the 3k + $engine might not be such a bad deal. And you know the condition of the rest of the bike which could affect that decision. If it is showing its age in other ways, that might make the decision a bit easier. If you go the route of a new bike, what is your old bike worth as is? Maybe you can find someone who wants a project bike to take it off your hands for a reasonable price and sink that into a shiney new machine. Just my thoughts.

 

sorry to hear about your ride man. I vote NEW BIKE!!

 

Man, that just sucks. I hate that sick feeling you get when the mechanic lays bad news on you. Sorry. the cost of the engine and labor would be a good down payment on a new ride and you may be able to sell your current ride as is to someone looking for a project bike. I would vote for a new ride.

 

Yea I have a couple of extras;
2000 Blue R1 / Full System Akrapovic Exhaust / Ivans Jetting / Ivans Airbox Mod / K&N Air Filter / 15*45 Sprockets / Galfer Wave Rotors / Galfer Blue Brake Lines / Speedo Healer / DID 530 Chain / Front Flushes / Custom Undertail / Frame and Swing Arm Sliders / Escort 8500 Blue Radar Detector with H.A.R.D. / Throttlemeister bar ends / Harris Yamaha Flame Grips / Super Bright Head Lamps / Scotts Steering Damper / CRG Gold Shorties / Zero Gravity DB Smoke / Vortex Gas Cap

And some I believe I have for gotten.

 

That f'in sucks man.

 

Wow, that is a tough one to hear. Rocker Arm problem? (I have not worked on a Yami yet and did not realize sportbikes have rocker arms). And a Crankshaft problem? Are the 2000 R1 cylinders plated or just a pressed jug/sleeve.
The Crank, rods, piston/ring swaps with bearings are standard practice. You have already done the valve/cam stuff. You will be a pro in no time if you do it yourself.

 

ok NS here my take, to my knowledge a DOHC engine DOESN"T have rocker arms. rocker arms are on a push rod motor. The olny thing in the bottom of your engine is the crank and the pistons. get a compression test and check your cylinders to see if you are loosing compression. doing your valve job should of made you wonder why he told you that. you cams press directly on the valves to open and close them. honestly dude, I think you did the vavle job perfectly. My guess is that one of your cylinders is loosing compression and when you redid the shims and stuff on the valves it causes them to close tighter and now causes more blow back with the increase of compression. Now I could totally be in left field but thats my guess. I'm not about spending 10k on a new bike when you can get a used motor for 1k or so or rebuild it yourself. Now maybe a crank bearing got chewed up, thats wouldn't be expensive if you did the work yourself. a compression test would tell alot. Looking at the microfishe of the motor, I assume the cylinders are plated b/c I believe that pressed jog/sleeve cylinders are only in diesel engines in big trucks. If you compression is ok, the I'd look into the crank area. Pull the motor out of the bike, pull the crank case and have a look around. use a micrometer and check out the crank. you can do all that and only be out a crankcase gasket.

 

I believe I should be saying rod and not rocker arm, shade tree mechanic at best. I am considering trying it myself. Thanks for the vote of confidence. Not sure about the cylinders, what difference would it make?

 

Well I am feeling more confident again thanks. As far as the blow by goes there was a lot, where the nipple on the engine is, it was coming out like it was the exhaust.

I have to consider it because I will not be writing any 10k checks for a new bike right now and I will never finance one.

Dam I just wanted to go and hit the twisties [sm=headbang.gif]