Carb's for the Keto

[Karl Snarl]

On that RWJ-4B carb, is the second port a pulse port line or return fuel line? Im not for sure is why I'm asking. I've been thinking on trying one of them.

yes

 

[Karl Snarl]

She runs way better up top with this carb. Doesn't fall flat like the other one. I like the other one, it's just better suited for the 66cc.

On that RWJ-4B carb, is the second port a pulse port line or return fuel line? Im not for sure is why I'm asking. I've been thinking on trying one of them.

 

[DieselTech]

Ok thanks I'll order one just to have in my parts stash. Lol never have enough.

 

[Karl Snarl]

IT's why I have 3 or 4 hs 254b's floating around in the shop cabinets. lol. I just haven't gotten around to getting more rwj-4b's yet. Buying more steel sleeve engines and got one waiting for her body.

 

[Karl Snarl]

@Frogslayer Good catch, I'm up in the coulds if ya feel me. lol. after work ya know.


@DieselTech its a fuel return

 

[DieselTech]

When & if you get time, can you measure mounting hole dimensions of that rwj-4b carb? Center to center of bolt holes in mm & I'll get a adapter built ahead of time.

 

[Karl Snarl]

When & if you get time, can you measure mounting hole dimensions of that rwj-4b carb? Center to center of bolt holes in mm & I'll get a adapter built ahead of time.

It's 32 or 33mm

I wanna say 32mm

 

[Frogslayer]

I just measured mine, I'm thinking 31mm is fairly standard small saw carb mounting spacing. I could be wrong though.

 

[Karl Snarl]

yeah the hs and rw are the same exact carb, but the bore, venturi and some internals. Same spacing and same dimensions outside, everything.

 

[DieselTech]

Ok thanks guys it's the same bolt pattern as a stihl 039 carb which is 31mm, there a walbro HD-5-1 with a 17mm venturi.