Ryuske

I've been reading but I can't find any pictures about it, but how do the stock secondaries work? Cause mine right now there is a thing that spins and activates the secondary diaphragm. There is a tab on the thing that spins that the throttle catches.

Sorry if that doesn't make sense.. I was just wondering if that is stock or if that is what the mechanical secondaries are. I can't see the secondaries open from just pressing the throttle I can only see them move if I manually spin the thing that activates the diaphram.

I can't drive the car to see if they work or not, just rebuilt the carb and having trouble getting it all put back together haha

NanaimoRx-7

The stock secondaries are vacuum operated, if you operate the throttle shaft from where the cable connects and the secondaries don't open then it's probably still stock. If there is some sort of linkage or additional metal tab that has been added you will see it contact and begin to open the secondary mechanism somewhere around 1/2 throttle application. The spring that controls the opening of the stock setup is contained inside the metal box highlighted in pink labelled 86. Some people try shortening the spring inside to help open the secondaries sooner on a vacuum operated setup.



This post was made 6 beers deep, take it as such lol

George

Ryuske

Hmm.. I'm still not too sure. I'll try and take some pictures tonight cause I don't think i can explain it any different.

The gas pedal seems like it feels weird now.. like it feels kinda mushy and choppy maybe? Like a lot softer? Any ideas what what I forgot to connect?

NanaimoRx-7

It's pretty easy to accidentally slip the throttle sub-return safety off of it's perch. Look on the firewall side of the carb for this piece and insure it is in the correct position

Ryuske

Hmm nope that is definitely attached.. remember doing it cause it was a pain in the *** haha

Ryuske

Alright, so I took those pictures.

So in this first picture I tried to show where that like lever that activates the secondaries is:


Then in this picture here is the tabs that I was talking about that kinda moves the lever for the secondaries (this is when they're close together):


And this is when they're pretty far apart still:


And this is what happens when you rotate the secondaries lever by hand (opens the secondaries):

Ryuske

Really? No one knows?

black82gsl

iTrader: (3)

The linkage on these carbs are a clustefuck lol. I just ditched the bs vaccum secondaries and wired em up to open mechanically. I just did the "strip" on my nikki. Wasn't hard and makes things a lot easier to work on. Before I couldn't even find the idle screw lol. I would suggest that.

NanaimoRx-7

So when it's light out tomorrow I'll go have a look and compare to the pictures you posted, but for now I was re-reading your original post and I noticed you said you can't see the secondaries open by working the throttle. This is normal for the vacuum operated stock setup, free revving the engine in the driveway won't activate them the engine needs to be under load. If you go back to the first diagram picture I posted and move the lever under the vacuum box (81) it should open the secondaries and I'm guessing that you'll see it move that tab on the other side of the carb that you've been looking at.

Since the rebuild is the gas pedal feeling softer and choppy the only thing that seems to be different. How is it running otherwise? Normal idle, revs up like it used to etc

In your first picture is that how it is currently set up? It looks like the entire throttle sub-return bracket it missing and the teeter totter spring is just hanging out there.

Ryuske

no that isn't how it is sitting we tore it back down to attach a linkage we missed.

I don't know how it drives, I haven't gotten the carb all the way on since rebuilding it haha