Project "I needed to clean the air filter so I blew the motor"

[Motorrad]

What is the issue with the intake side that needs fixing?

have any used pistons around?


Ill give you a hint.

EVERY piston in this pictures shows the problem.

EXCEPT 2.
1. Blew up (lost a small end bearing, thank you stewart   ) within 2.5gal of fuel.
2. Was run in a Sleeved Jug.....

Hint: Hint:  Cr500 exh port.

[81cr450]

I know I know   2, 3, 4, & 6

I like "a" high circular hole with just enough overlap to lube the bridges

[Pmcg]

Wear marks on the skirt?  I'm missing something

[Motorrad]

Wear marks on the skirt?  I'm missing something

intake bridges.

[sandblaster]

Its a thing of beauty 

[Motorrad]

Debating if its a good idea to Set you up on a powerjet or not

[Pmcg]

So the intake bridges are the issue how will a power jet help. I've installed them on Harley's and as I understand it they just provide more jetting options so you can jet a bike perfect at full throttle and still run well at no throttle.

[USMC 500]

Debating if its a good idea to Set you up on a powerjet or not

sounds cool..........

[Motorrad]

So the intake bridges are the issue how will a power jet help. I've installed them on Harley's and as I understand it they just provide more jetting options so you can jet a bike perfect at full throttle and still run well at no throttle.

Power jet has nothing to do with the bridges.   Was thinking easy to check jetting for the owner

[Pmcg]

O got ya. Does the owner have any history of jetting issues?

[SHLEPY]

LOL ya you might say he had a slight issue.

[USMC 500]

hey........I didn't have issues with jetting (plural).......I only had issues with ONE jet.......just so happens it was the main jet.

[Pmcg]

Haha I'm just glad you shared because I was defineatly going to just run what I had from the previous owner.

[Motorrad]

[alward25]

Wouldn't it be great to get your top end pre-broken in?  2 flying "M" cylinders, oh the magic