Rack of carbs

For Sale, a complete carb rack reputedly from a 1980 Maxim. Not pristine but they worked on my XJ750 while Dave Hogfiddled a set. I have installed new throttle shaft seals and a float. They have been cleaned but did not go to church. An expert suggested I ask $75 plus shipping so we will start there.

 

did it have fine or course mixture screw threads? that would help ID the year.

 

I will have to look at them but not sure I will know the difference.
John

 

http://www.xjbikes.com/forums/threa...fference-between-coarse-and-fine-thread.80399

 

Thanks Len. Tomorrow I will check and see which I have and so edit my post.
John

 

Upon further examination the mixture screws are coarsely threaded. Thanks again to that seemingly endless source of XJ info, Chacal.
John

 

For my curiosity, what year or model does it make it? Weather being course or fine?

 

The coarse-threaded mixture screws were used on 1980-81 XJ650 Maxim and XJ650 Midnight Maxim models, and some of the early XJ650 Euro model carbs. Some early-production 1982 XJ650RJ Seca models may have also used them. We have never seen them used in the 1981-82 XJ750 model carbs, which is odd, since the bare carb bodies are (for all practical purposes) identical between the 650 and 750 model Hitachi carbs...….

 

only real reason to know is that you set course mixture screw different than a fine screw for the initial soft bottom install. I think 1.8 turns vs 2-1/2 turns.
some of the older carbs have less screws on the frame and a different carb bowl drain set up

 

Thank you. I found fin interesting I like knowing things like that

 

Well, if no one NEEDS a rack of carbs, who WANTS them. Feel free to make a reasonable offer.
John

 

someday half the people on here are going to wish they had those carbs. cut loose people

 

A deal has been struck, the carbs are spoken for, SOLD.
thanks all who looked.
John