My lowe crank bearing has seized and the crank is not locked up but there is some discoloration and it does not move freely. Can this be repaired and a new connecting rod put on? or does the whole crank and rod need to be replaced ?
If not repairable, I am looking at having a hotcrank with aftermarket connecting rod installed to fix this thing. I am being quoted 1800 for the job. When I look at part costs it seems expensive.
My top end is fine so I am looking at a couple options, any input would be appreciated.
#1- Replace crank and connecting rod and leave top end alone
#2- Replace crank and connecting rod, go up to a 10-1 piston and install a stage 2 hot cam
I am running a fmf dual exhaust, CDI, Intake, Stock Carb
Any suggestions on what this should cost, whether there will be much of a difference in power from #1 to #2 and what you think option 2 will do to reliability???
Thanks for the Help!!
Also what are the better shops in LV for this stuff
The crank can be rebuilt, no problem.
A better rod would be great, but not absolutely necessary. Make sure to have the counterbalance drive welded so that it doesn't spin on the crank.
Use genuine Yamaha bearings and crank pin.
Like the others have said, don't mess with the Hot Rods crank.
#2 will give a nice increase in performance. If you don't run the engine out of oil, these mods won't hurt reliability at all. You also need to make sure you run the engine on at least Premium grade fuel.
Like BiggJim says, a CP piston with the DLC pin would be a big improvement. I bet your stock rod has galling on the small end. Probably the piston pin too. Look closely at it.
The DLC pin will eliminate that issue.