Have anyone replaced their crankshaft by themself? I am a car mechanic, and have little experience with these types of engines. I can't seem to find a guide with pictures on the web yet, so if anyone know of one, please let me know. A have the Haynes Workshop Manual, and it's not very helpful since my english isn't very good (I NEED PICTURES :D)
Hope you can help me.
Crankshaft replacement is a piece of cake.
Split the crankcase. Very easy
It's all documented in my build thread mate.
It will need to be pressed out the other side.
I see - i'm just a bit worried about getting into the gearbox parts and mess something up, when I have to split the cases. But I guess i'll give it a go Thanks for the pics! By the way, i'm considering buying a complete new aftermarket crankshaft, called "Jasil" from ebay, any experience with these?
The standard cranks are good for nuff power mate. I've forged the connecting rod and that's it. I don't see what there is to gain from a modified crank?
Lightened flywheel perhaps. Ut a Zeeltronic Ignition system is a must. And then a decent underslung exhaust system with bigger carb and ported and polished head and barrel.
It's all in my build thread. There isn't a Lot I haven't done.
The gearbox mate don't worry about. It's a doddle and if you cable tie it like I have then you cannot go far wrong. Cable tie it all together before removing it and plave it back in cable tied.
Mate you're a mechanic. I work in IT and haf no prior knowledge of mechanics before starting the build. It's a piece of cake.
It's not about power - I don't know anyone who can replace a connecting rod near of where I live, so that's the only reason i'm looking to buy a complete crank People who does this are not very common in Denmark, even my local Yamaha dealer can't do it..
But thanks for the input, it's just that i've never splitted this type, but i'll give it a go - thanks!
Aww mate what a waste.
Pjme mate. You can send the crank off to be rebuilt mate. Honestly don't throw your money away.
Rebuilding yhe crank is a specialist Job. Even if you have to send it away to be rebult yhere are loads of companies that do crank rebuilds. Even in Denmark
I guess i'll look into it in the upcoming week, no of my local dealers could help my though, but I guess I could send it somewhere, as you propose. I am going to buy the parts from PJME, can you explan to me what "TZ Style Big End Bearing" means, and is it the way to go?
Calum last edited by Calum
Yamaha do a ruthless two stroke race bred machine called the TZ. The TZ is a full Grand Prix bike. So presumably it runs some sketchy kind of little end bearing.
That's the rods I use. Very high quality. But PJME recommend Long rods for generic builds. Mines supposively tuned.