1st Generation Specific (1979-1985) 1979-1985 Discussion including performance modifications and technical support sections

Carb questions

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Old 09-27-10 | 02:48 PM
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Originally Posted by JoeNoble
but do i need to bend the fast idle linkage? also what do you fill the holes left by the butterfly rod with?
I filled the holes in with J/B Weld bro. I overstuff them with putty and then I clean them up with a rotary tool.
Old 09-27-10 | 02:48 PM
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Originally Posted by JoeNoble
but do i need to bend the fast idle linkage? also what do you fill the holes left by the butterfly rod with?
I filled the holes in with J/B Weld bro. I overstuff them with putty and then I clean them up with my dremel.
Old 09-27-10 | 10:22 PM
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i bought some jb weld and had no idea how i was going to get something of that consistency into the holes.
Old 09-28-10 | 07:35 AM
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jam the **** in there.
Old 09-28-10 | 08:15 AM
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With what? It's a liquid that you have to mix on a flat surface. Do you think the red gasket maker is a bad idea?
Old 09-28-10 | 08:16 AM
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i probably wouldn't use the gasket maker. I'd want something that dries a little harder than that.
Old 09-28-10 | 08:43 AM
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JB weld is not a liquid. it's kinda like bondo. and the only hole that needs filled is the one left by the rod that ran down from the choke plate to the throttle so ur not sucking dirty air thru it. mine is filled with something like rtv casket sealer or caulk. wasn't done by me.
Old 09-28-10 | 09:02 AM
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hows the rtv holding up?
Old 09-28-10 | 12:19 PM
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holding up just fine. the sun was casting a shadow on that area so had to block it with my hand for it to show up well in the photo.

Old 09-28-10 | 01:16 PM
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what carb is that?

heres what mine looks like. I just put my finger over the hole on the inside of the carb and squirted it in from the outside.



Old 09-28-10 | 06:25 PM
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oh didn't know all this time u were talking bout the stock carb. thought u were dealing with the 465cfm holley. it's in my sig, holley 600cfm.
Old 09-28-10 | 07:07 PM
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I really think you should've use the J/B weld instead of that stuff. I just filled a dropper with it and squirted it all in there.
Old 09-28-10 | 10:16 PM
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damn hadnt thought of that. k i guess tomorrow ill go find a dropper and pull the top of the carb off and push the rtv out. so you just mix it on a flat surface and suck it up into the medicine dropper?
Old 09-28-10 | 10:23 PM
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your plugging a hole with jb weld.... how hard is that!? not to be a jerk but come on.
Old 09-28-10 | 10:32 PM
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never used it before
Old 09-29-10 | 11:19 AM
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Ok managed to get JB weld into the choke rod holes. It was messy as hell! So now my question is since I no longer have the butterfly do I need to bend the fast idle linkage so that it pushes the throttle further to compensate for the lack of choke butterfly?
Old 09-29-10 | 12:40 PM
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removing the choke blade has no effect on the fast idle workings. it will still idle up when u pull the cable.
Old 09-29-10 | 01:24 PM
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ok i was just curious cuz i figured a lot of the higher idle was from the butterfly closing and restricting the air flow and mine looks like it will just barely move the throttle so i wasnt sure.
Old 09-29-10 | 01:36 PM
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Here are some pics of the carb. I'm gonna put a small cone filter on top.




Old 09-29-10 | 01:45 PM
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btw thanks for the help every body
Old 09-29-10 | 03:58 PM
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The carb looks good bro.
Old 09-29-10 | 10:30 PM
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now the gasket sealer is ok for the the high altitude block off plate right? btw i used an old shitty secondaries diaphragm that i cut to fit.
Old 09-29-10 | 10:32 PM
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thank you btw it was my first rebuild so ive im keeping my fingers crossed. im putting it in friday so hopefully all goes well
Old 10-02-10 | 02:40 AM
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ok so the carb transplant went well with no flooding/sticking float needles. now just working on getting the idle/mixture adjusted. here are some pics.





I was going to remove the coasting valve butterfly but someone apparently beat me to it.


Now to clean up the engine harness.
Old 10-02-10 | 09:08 PM
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well the carb is on and working and the engine seems to have plenty of power but the throttle seems spongy. what might cause that?


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