Tuning hitachi HBM46w

[Nahuelcalli]

So im having a hard time figuring out these carbs. I just cant seem to get the mixture correct.

Is there anyone local to NYC that knows how to tune these or knows of a shop that can tune these

type of carbs. Any help at all would be greatly appreciated. Please dont tell me to ditch them

and get the old round top carbs. I have no intent of buying any old carbs since ill be looking to 

rb swap later on in the future.

 

Thank you

[dutchzcarguy]

Many years ago, a man came to me with these ….   He sayd that the carbs where off every few weeks after adjusting them….  and it IS !!  a imposability to tune them, the only way is after a complete revision..   get yourself….  ehhh. ehhh..  an injection kit?  (proest)….

But seriously… they  don't call them boat anchors for nothing..   the time you could get a z car running for few bucks is long gone..

[Captain Obvious]

I doubt there is any easy answer. Probably a bunch of small vacuum leaks spread out all over the system.

How long are you planning to keep these carbs in service before the RB swap?

[Nahuelcalli]

was hoping to wait it out till some time next year but im also having some tranny and oil pan leak issues as well,

so looks like its going to be something thats going to be sooner than i thought.