Yamaha Pistons

[aleutianwest]

Is the 6L101 piston the same as a 6R5 piston they sure look the same

 

[BruceAML]

Re: Yamaha Pistons

It would be helpful if you gave us the year and full model of the Yamaha motor.

 

[Ray Neudecker]

Re: Yamaha Pistons

Basically, if they match the rods they will interchange.

 

[aleutianwest]

Re: Yamaha Pistons

1990 txrd . parts says 6R5 but it had 6L101 pistons with 6E5 rods just wondering if the motoror had been gotting into thanks

 

[rodbolt]

Re: Yamaha Pistons

sometime in the mid nineties the wristpin diameter on V4 yamahas changed. this also changed the connecting rod and wristpin.
the reciprocating weights remained basically the same. so its possible to mix and match if the correct parts are used.
its also posible the original powerhead had been replaced at some point.

 

[BruceAML]

Re: Yamaha Pistons

You still have not given us the complete model number of your motor. What is it so we can better answer your questions?

 

[Ray Neudecker]

Re: Yamaha Pistons

Very well could be original. A lot of those early 90's models had different parts than the manual called for. Basically they all still interchange. If the pistons are all stock bore, it is unlikely to have been rebuilt before.
I stiil see a lot of those motors which have never been apart in our area.
Old as I am, they may outlast me.