Carnage :: Yamasaki motor go bye bye

Marshj

DarkHorse
Location
Ann Arbor
that was brad's guess also.

so, maybe the crank bearing seized, thrust washer fell apart and bits of it went up into the combustion chamber and got bounced around in there and out the exhaust?

Exactly that happened to my Bro's fx1 saki. On a low hour crank too. Took out the piston/part of the head and then actually got stuck in the piston top:banghead:
 

Moondance

Just plain me....
current progress:

- all the fashionable yamaslut yellow removed from cylinder
- crank and pistons installed
- motor painted
- snapped starter bolt in cases drilled out (much straighter hole than stricky's!)

remaining:

- order new domes from greater (completely forgot!)
- flywheel, igntion, coupler, intake, exh mani, head reinstall.


defoaming/refoaming superjet has moved down in my list of most hated superjet jobs of all time. drilling out the snapped bolt from my starter had to me the most aggravating experience to date! holy crap!
ok...I have heard of some pretty crazy sht, but trying to fit a sj motor into a bug...wtf:biggrin:
 

Mike Serlin

NOW SPORTING A BIONIC LEG
What's that sticking out of the top of your piston? It looks like the needle bearings in the top end bearing. Is it possible that bearing went out. It just happened to me. Feel the inside of the rod (where the bearing rolls) to see if there is any pitting from corrosion.
 
1.Uh, That aint a Harbor Freight Machine.

2. Harbor freight machines are pretty crap and are actually a copy of these smithys. If set up correctly a smithy can be just as accurate as a bridgeport.

3. Those harbor freight machines dont even cut true english dimensions. They have metric leadscrews with english dials.

4. I dont have the floorspace for a vertical mill + a lathe.

5. You cannot easily turn metal on a bridgeport.

6. I am pretty sure a $1500 bridgeport will give you some trouble and probably would not cut straight anymore.
 

douglee25

m3booooy
Location
South Jersey
1.Uh, That aint a Harbor Freight Machine.

2. Harbor freight machines are pretty crap and are actually a copy of these smithys. If set up correctly a smithy can be just as accurate as a bridgeport.

3. Those harbor freight machines dont even cut true english dimensions. They have metric leadscrews with english dials.

4. I dont have the floorspace for a vertical mill + a lathe.

5. You cannot easily turn metal on a bridgeport.

6. I am pretty sure a $1500 bridgeport will give you some trouble and probably would not cut straight anymore.


I stand corrected. Harbor freight used to sell them. When I just checked their catalog, they are no more. I'm not putting down your Smitty machine at all, I was merely suggesting to Saki if he had the choice and the room, buy a Bridgeport. That's all.:biggrin:

Doug
 
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