bore

[Eshaw150]

what is the std bore on a 1990 v6 johnson 2 stroke motor

im think im going to half to do a rebuild

and im going to get the block machined

 

[slasmith1]

Re: bore

what size serial # would help or model #

 

[Eshaw150]

Re: bore

its a 150 vro 1990 with model number j150txesb

 

[Faztbullet]

Re: bore

If it is a crossflow 3.500 (175 crossflow came as a 3.625)
the 60 degree is 3.600 and the looper is 3.685. Yours is a crossflow.

 

[Eshaw150]

Re: bore

the motor just had the third cyclinder rebuilt bet to comp is as follows stating from the left side looking at the back

1-85
2-83
3-74
4-90
5-90
6-91

 

[Faztbullet]

Re: bore

Looking at rear of engine cylinders are labeled as so:


2 1
4 3
6 5
Which cylinder was rebuilt and why??

 

[Eshaw150]

Re: bore

6 has ben rebuilt and only now has 74 psi it was rebuilt due to bad rings and a blown head gasket when i bought it i new about it he told me it had been extermly over heated the walls were scored meidum to badly
u couldnt even tell it had rings they were flush with the piston

i spent over 300 for one cyclinder

and now i found a whole rebuilt kit for 700

it like it starbving for gas could the fuel water seperator be the cause of it

and today i put a new set of ngks in it stsrted a lot eiser though

 

[Faztbullet]

Re: bore

Did they bore that cylinder or hone it?

 

[Eshaw150]

Re: bore

it was honed it looked pretty good but i dont know to much

im honestly think about getting a used 4 stroke or a new etec