No avoiding it; I MUST get NEW Linkage Hardware Now Right? Kickdown Not Kicking.

Welder guy

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It looks great! Just one small thing , flip your throttle return spring around. The long hook end goes to the throttle cable yoke . This is to prevent the spring from catching on any linkage at WOT . I agree with you not needing the new cables , go enjoy your car .
 

Gerald Morris

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It looks great! Just one small thing , flip your throttle return spring around. The long hook end goes to the throttle cable yoke . This is to prevent the spring from catching on any linkage at WOT . I agree with you not needing the new cables , go enjoy your car .

I had the throttle cable in w the long hook to the yoke, but it was snagging too. Now, I need to focus on the timing and distributor. While it distributes decent spark, my vac advance is sending it into misfire mode. I plan to get the vacuum gauge and optimize on that. I saw today its back to pulling about 17" Hg @ 650 rpm idle off the manifold, which is what it pulled when we first got it nearly 7 yrs ago. I have it timed at the canonical 12.5 degrees BTDC right now, but may retard it a couple if that will get it to play nice w the vac advance. It bump starts w the vac attached, which is GREAT, but then misfires as soon as it gets any throttle. Ported vac works well too, sooo I figure I need to use the vac and timing light, w a prayer or 2 to hit that sweet spot. I mark the distributor clamp and distributor tower w a Sharpie when I find that, then am good for so long as my marks last usually.....
 

Gerald Morris

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Check the slack in your timing chain, you may need a new one .

Possssssibly, though its not all that old, having replaced it just 4 yrs ago. Its a double roller, ENGINETECH TS168A. I can easily check that though. Last time I set the points, Labor Day, I turned the crank w my breaker bar and saw no discernable lag in the distributor rotor. If I have to pull off that timing chain, it will also be CAM time! Maybe this Christmas...... I have 2 cams here to try too. But, I don't expect the timing chain to stretch or worse, break soon. I pray I'm right.

I suspect I just have a little too much advance on my timing. Easy to remedy. Vac gauges work well for verifying that. With that crap BBD, it idled VERY rough, and may have diddled things up a bit too. I can put my piston stop in #1 and see if my damper mark reads true. THAT will settle some doubts.
 

Loadrunner

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Somehow I've run into this prob w/ vac advance before and decided it was better left disconnected.

An old time trick for - perish the thought - defeating such a device while retaining a factory look is simply to shove the appropriate ball bearing into the hose* and Bob's your uncle ;]

As a one time State Certified Emissions Specialist - twice the fines of a civilian - I had to live with the guilt of driving a modified in every way possible Roadrunner, a gray area, as well as things I did to my daily drivers.

Screen Shot 2022-10-27 at 11.23.30 AM.png


Of course the best trick of all was to use someone's address outside the testing zone.

Our state's program finally ended after 38 years, why I have no clue but a sigh of relief for millions, in the short term.
 
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Gerald Morris

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Somehow I've run into this prob w/ vac advance before and decided it was better left disconnected.

An old time trick for - perish the thought - defeating such a device while retaining a factory look is simply to shove the appropriate ball bearing into the hose and Bob's your uncle ;]
It sure does accelerate SMOOOOOOTHLY sans the vac advance. I have the timing set at 10.5 degrees BTDC now, pulling 17 inch vac off the manifold. THEN, I hooked up the vac advance pot, and note that my manifold vacuum jumped up to 18 inches! This 2, I've seen B4. Also, it bump starts WITH the vac advance, but not without.

I've left it on for this afternoon with these settings, and will take her for a putt when I pick up my First Mistake at her elementary indoctrination center. We'll see how Gertrude likes this setup. If she cuts up rough, I can slip the condom back over the line for now.
 

Loadrunner

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"One condom over the line" sounds like a David Allen Coe song ;]

To veer or not to veer, that is the question?

My first mistake is now picks up her first mistake at the same "EIC" where she went - walked to school by me every morning back in the 90's - , 1st year of kiddiegaaden, and the place has gone WILD in the meantime!!!

They let my precious grandchild escape the classroom many times a day - wtf? - they are "understaffed", she even bolted through the front doors of the school and was "locked out", my blood pressure really going up here.

Admittedly she's a little wild, "damaged by the pandemic" I call it, an adequate Lizzie Borden defense these days.

But you can't imagine the swelling with pride when I found out she smacked her [doofus, inexperienced] temporary male teacher who's never taught outside a short term as an aide and isn't ready to deal with today's internet damaged brains.

On the 1st day of school, she smacked him and "swished" something at someone else.

Beware ;]]]

As it is, "M1" is called by the school 3 effin times a day about her M1, "please come and help catch your child".

So, her being super sick right now with (flu?), she can't take kiddo to school, because she can't cope with 3 phone call emergencies a day, because "they are understaffed" and can't keep up with a 5 year old.

This world is as if Orwell lacked imagination.
 
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Gerald Morris

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"One condom over the line" sounds like a David Allen Coe song ;]

To veer or not to veer, that is the question?

My first mistake is now pickup her first mistake at the same "EIC" where she went - walked to school by me every morning back in the 90's - , 1st year of kiddiegaaden, and the place has gone WILD in the meantime!!!

They let my precious grandchild escape the classroom many times a day - wtf? - they are "understaffed", she even bolted through the front doors of the school and was "locked out", my blood pressure really going up here.

Admittedly she's a little wild, "damaged by the pandemic" I call it, an adequate Lizzie Borden defense these days.

But you can't imagine the swelling with pride when I found out she smacked her [doofus, inexperienced] temporary male teacher who's never taught outside a short term as an aide and isn't ready to deal with today's internet damaged brains.

On the 1st day of school, she smacked him and "swished" something at someone else.

Beware ;]]]

As it is, "M1" is called by the school 3 effin times a day about her M1, "please come and help catch your child".

So, her being super sick right now with (flu?), she can't take kiddo to school, because can't cope with 3 emergencies a day, because "they are understaffed" and can't keep up with a 5 year old.

This world is as if Orwell lacked imagination.
George Orwell was an OPTIMIST! HE thought that enforced poverty, torture, constant warfare and of course Minitrue, Minipax, Miniplenty and MiniLOVE all would need to be centralized, to achieve the State of 1984. Alduous Huxely understood things better: Drugs, SEX! ROCK AND ROLL! works on the mobs FAR more efficiently than maintaining all that centralized terror. NOW, we have.....

Google + Farcebook,

Those bred an elephant poor Eric Blair never even DREAMT of killing, not in his worst nightmares.

Such is the Brave new 1984 we've lived under since about 1979, when the CIA installed George Herbert Walker Bush close enough to the Poohbah Seat to do the job. They made an Ayatollah scarecrow, and the Rest, as they say, is Hysteria....
 

Gerald Morris

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Closing Note: This evening, while gone to fetch home my Beloved Babushka from her professional pedagogue job, the Lokar cable and Mancini copy of the 1968-70 Mopar 4 barrel throttle cable bracket arrived. I compared the bracket to the 1966 2 barrel cable bracket and see that the cable tab sticks up (originally IN) about 3/4" to 1" more than the tab for the wider 4 barrel carburetors in use then and now. To wit: I probably will use the appropriate bracket AFTER coating it with the lovely turquoise engine paint I got for this and future engine projects.

I have no use for that lovely, expensive piece of modern cable, with it's stainless steel mesh and PTFE sheath, so BACK IT GOES, unless some Needful Soul here wants to purchase it of us.

I'll post my Coda to this stuff Saturday, after replacing the cable bracket.
 

Gerald Morris

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Ohhhh Kaaaay, the Coda comes Sunday. Yesterday I spent chasing down some 5/8 heater hose after finding a fresh split just above where a water pump return teat went into it. Being already too short, I opted to get more hose, run it right. and replace the missing bracket above the alternator. Done! Also had some points to replace, set, time, and such...Done! So, the

Marvellous Mancini 4-barrel Throttle Bracket Debacle

now can be told. After painting the 4 barrel throttle bracket to match the same turquoise the rest of the new heads and intake, I mounted it this afternoon, then tried to get the kickdown to work again. Nothing doing! Does the 4 barrel bracket seem to sit LOWER than the old 2 barrel one? It does! Does the bellcrank seem CROOKED? It was, too much to function, likely, BUT
1667186827737.png

despite my effort to impose better geometric integrity to the point where the rod ends in the crank, nothing would apply the pressure required for the kickdown to activate, despite the relative EASE which I enjoyed with the old, bent bracket! The Showstopper lies in the crank pin on the new bracket, fresh from the SOOOOO Reputable Mancini:

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See how much dark shows between the pin retaining bushing and the bracket? This didn't show until I tried the bracket in a half mile drive. The pin IS SO LOOSE IT SPINS WITH A LITTLE FINGER TWISTING! It also WOBBLES, as clearly shows in the pics above. This bracket can NEVER deliver sufficient pressure to the transmission kickdown with such a gross defect! Had this showed on unpacking the bracket, I nver would have wasted expensive, hard to get Early Mopar Big Block turquoise engine paint on the useless paperweight. Nor would I have shucked out the lucre to Mancini.

I'll be telephoning those people tomorrow, sharing my thoughts on their Quality Control and money that could have bought some shoes for my wee daughters instead of this gew-gaw.

Upon restoring the 56 yr old 2 barrel bracket, the kickdown resumed working very well. Think I'll keep it. Notice the new throttle return spring? It has a bit more snap to it than the 54 yr old one that came w the Carter BBD setup on Gertrude's original engine. That one works, but will serve better with another 2 barrel Carter methinks....
 

70bigblockdodge

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Tighten up the tension in the vacuum advance can with a 3/32nd Allen wrench through the nipple. It will keep it from coming on as quick/low vacuum till you get some rpms in it.
 

Gerald Morris

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Broken spot weld, or just simply needs to be spot welded, easy.

Yes, easy to FIX, but the necessity of doing so w a brand new purchased product galls. A BETTER way would be to press it into a tighter bushing. Since Mancini instructs those who buy this bracket to remove the pin for manual transmissions, I suspect they just pressed it in, though my guess has no factual basis at all in their case.
 

Gerald Morris

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Tighten up the tension in the vacuum advance can with a 3/32nd Allen wrench through the nipple. It will keep it from coming on as quick/low vacuum till you get some rpms in it.

This assumes the vac advance pot is adjustable. I can try inserting a 3/32" allen key into the nipple, just for the sake of proving whether it is or ISN'T adjustable, but given this has a ROUND neck to the nipple, while adjustable pots have a hexagonal one, I strongly suspect it isn't adjustable. BUT, I like pleasant surprises, so its worth the effort to check! :)
 

Loadrunner

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Pressing the shaft in, with an arbor presss, would be adequate if the interference fit was sufficient, aka BFH fit, a very tight fit, but here, you're suffering from shrinkage of the shaft, which is not a good thing, they don't even make a pill for that yet.

The quick fix, fire up the Miller and throw a couple spotwelds on there, which is probably what a Chrysler robot did way back when.

Best welding shops are often on the scuzzy side of town, my favorite, where your old Mopar gets noticed and appreciated. I'd always get to know one, find a good one. The one you can bring anything to and will do it on the spot, always appreciating a sixer at closing time.

I weld for myself now, have to, too far from town.
 

Gerald Morris

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Pressing the shaft in, with an arbor presss, would be adequate if the interference fit was sufficient, aka BFH fit, a very tight fit, but here, you're suffering from shrinkage of the shaft, which is not a good thing, they don't even make a pill for that yet.

The quick fix, fire up the Miller and throw a couple spotwelds on there, which is probably what a Chrysler robot did way back when.

Best welding shops are often on the scuzzy side of town, my favorite, where your old Mopar gets noticed and appreciated. I'd always get to know one, find a good one. The one you can bring anything to and will do it on the spot, always appreciating a sixer at closing time.

I weld for myself now, have to, too far from town.

I bet I can still find a metal/blacksmith shop around town. I live smack dab in the middle of a barrio where the Old Mopars get notice and appreciation. Ever so often I encounter South American Ethnobotanic Entrepreneurs offering Fistfuls of Dollars for one. I knew where a blacksmith/welder abode 25+ yrs ago, downtown, before the University and it's horde of Trotskyite lesbian law students, and graduates swooped down on our African/Latin 'Hood, and made it "progressive." (Ashkenazic-WASP liberal making +$100k/annum) The shaft on this knockoff bracket is the same diameter as the old one, but the bushing definitely is loose, as is the hole in the bracket. If I can get a tighter bushing, that should restrain the pin, FWIW, but I think I'll just keep the old bracket on.
 

Gerald Morris

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look at this

Mine ARE BETTER!
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Out of Catholic Charity, I'll assume you meant well. Thank you for reminding me to close my threads when the matter becomes monotonous and moot to me. I returned the Lokar cable, but must eat the expense on the 4 barrel throttle cable bracket, on the grounds that I painted mine Chrysler turquoise. I might sell it or use it, God willing on another installation. Gertrude is kicking down very nicely with the old hardware now, though I DID upgrade to the 1968 configuration despite running a 1965 (November) built 1966 engine and trans. It just took me a couple days to rid my thinking of the 1966 paradigm.
 
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volksworld

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figured i'd give you a laugh...in the process of painting all the stuff for my rebuild i noticed my cable bracket was twisted to hell...so of course i straightened it properly....well i just tried to hook the cable up and realized the previous idiot had to twist it to get the cable to line up with the carb...cause there's an Edelbrock performer 440 on it which evidently is a taller manifold (despite reading that the performer is stock height and only the performer RPM is taller)...so i'm off to the shop to cut up the stock bracket and angle it correctly...
 
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