Hey everyone.
1st time Nikki rebuild on an 85 rex. Doing great so far but I have an extra weight and dont know where it goes. I do know that there are 2 check ***** and 3 weights. I have the two check ***** and weights for the acc pump inlet and outlet accounted for. I just dont know where the last, largest, weight goes.

Using the diagram included I just dont see it. HELP!

 

The one diagram is really packed!

Grab the carb manual PDF here:
http://foxed.ca/foxed/index.php?page=rx7manual

I'm waiting for it, and the carb rebuild pics from my digicam to download and I'll post with the answer if nobody beats me to it.

Jon

 

Man there have been so many people on here rebuilding there Nikki's lately, I salute you guys and your bravery

 

Hmmm... even in that manual it's missing BUT if memory serves me right...

Go to page 109 of that PDF, if your weights for #5 and #10 are accounted for, then I believe it goes under the plug #24.

It's the only place left for it to go, and makes sense as the place that has a weight but no checkball.

Jon

 

 

Nope, he's got that one accounted for.

There's the accelerator pump outlet (where #71 in his diagram and its associated checkball go), the accelerator pump inlet (where #74 and its associated checkball go) and another weight that goes in a third spot that doesn't appear on the diagram.

I remember reading a thread somewhere a LONG time back where someone posted "no, you're not losing your mind, there is a third weight and no it doesn't have a checkball". I just can't remember where.

Jon

 

Glad I am not losing my mind, I dont see it accounted for anywhere. The plug under #24 makes perfect sense because it fits!

Some pics included of the break-down.

 

Yeah, now that I think about it I remember figuring out the same thing when I did my previous rebuilds. It's one of those facts that you forget until you need to use it again, lol

Jon

 

Thanks for the help, after all the hard work I would hate for something like a little (but important) weight placement slow me down now.

 

I remember that odd weight. I think it goes under the one odd cap plug. See if it fits under item #93. It wasn't until my 3rd carb rebuild that that damn thing even fell out. Then I had to take another carb apart to find where it came from.

 

Previously I stated that it fit under #24, duh...there is no #24 in my diagram. Long night of looking at numbers! Anyway, it did go under the #93 cap.

 

How important is that large weight if it just sits under a plug anyway? mine is missing and I'm just wondering.

 

Well, I took at a look at the top picture and made another weight from a hardened steel drill bit. We'll see how it works, I just cut it to 17mm like in the top picture. Try it out if you lose your brass one.

 

Not sure if being made of brass or using a metal drill bit cut to size but the one thing I noticed that the placement of the weights and check ***** made everything fit to perfection.

 

The "wieght" is actually a vacuum valve for the richer solenoid. The richer solenoid is plugged into the back of the carb, right below the weight and cap screw. The solenoid itself is an electromagnetic switch, so I'd have to say that it might actually not be a good idea to use steel.
I don't know how the carb will perform mileage wise without that in place; -probably better. I doubt any performance change will be noticed.

 

Thanks Sterling, the wire isn't connected to that anyway. so the wieght likely does not make any difference.

 

hey guys what can i do to my nikki?

 

Ship it to Sterling?