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Throttle Linkage Mismatch
https://slantsix.org/forum/viewtopic.php?t=37811		 Page 1 of 2
Author:  rhy [ Thu Nov 05, 2009 11:43 am ]
Post subject:  Throttle Linkage Mismatch
So I got a new carburettor because the old one was thrashed. I got one identical to the original one that was on, for ease of installation. It's a Holley I got on ebay:

http://cgi.ebay.com/ebaymotors/ws/eBayI ... %3DBidding

It's identical to the other carb that I just tore off (it was really beyond repair), but the throttle linkage looks different, because the linkage on the old one was some awful hackneyed weld job. I hadn't noticed till I got the new one and put it on...

My question is, can I just get a matching throttle for this carb? Where would I find one? Is that going to be cheaper than tearing the whole thing apart and doing another frankenstein weld on the new carb?

Thanks in advance.....

rhY

PS Here's a pic of the old bird:
Image
Author:  Joshie225 [ Thu Nov 05, 2009 12:04 pm ]
Post subject: 
Welcome. How about a picture of the two carburetors so we can see the differences?

<edit>

Oops, I took for granted you actually bought the right carburetor. You bought one for a newer vehicle with a cable throttle.
Author:  Aggressive Ted [ Thu Nov 05, 2009 12:36 pm ]
Post subject: 
I would change over to the newer style cable linkage and leave the new carb stock, no mods.
Author:  vynn3 [ Thu Nov 05, 2009 1:54 pm ]
Post subject: 
I can't help with the linkage, but good luck with the rebuilt carb.

Last time I bought a rebuilt carb, I had to spend another $225 to have it RE-rebuilt by local professionals.

Rebuilds have a bad reputation around here... for good reason.
Author:  SlantSixDan [ Thu Nov 05, 2009 2:38 pm ]
Post subject: 
Welcome on the board. The carburetor you bought is configured for cable operation of the throttle, and will not work on your pre-1967 A-body with rod-operated throttle. There is a cable-to-rod linkage adaptor for the 1967 and earlier cable-operated carbs, but not for this '68-up style. Unless you wish to swap in a different accelerator pedal and brackets and complete transmission kickdown linkage, you will need to use a carburetor configured for rod-type throttle operation.

It's just as well; "remanufactured" carbs such as this one usually work poorly and cause a lot of headaches, see this thread.

If you need a new (not "remanufactured") rod-type carburetor, send me a PM on here; I have some on the shelf.
Author:  rhy [ Thu Nov 05, 2009 7:41 pm ]
Post subject: 
I was worried that this is the type of response I might get. The new carb is IDENTICAL to the one I took off, with the exception of the frankenstein linkage converter, which I will take a picture of. Is it really that hard to switch to a throttle cable? I don't want to mess with the PowerGlide transmission. That thing is bullet proof the way it is. This carb has been a thorn in my side since day one.... I've rebuilt the rest of the car (though I haven't yet serviced the PowerGlide), even got all fenders, etc. Short of the paint job and some new cushions, this carb situation is almost the last detail. After this it's all details and minor upgrades.

Thanks for welcoming me to the forums, this is EXACTLY the kind of place that would've helped a lot during the last rebuild!!

How much for the "proper" carb? And what would the mileage difference be?
Author:  Joshie225 [ Thu Nov 05, 2009 7:59 pm ]
Post subject: 
Argg! Sorry for the outburst, but you have a 3-speed automatic transmission known as a Torqueflite. The Powerglide is a 2-speed and if you've ever driven a 6 cylinder Chevy with a Powerglide you'd know just how inferior they are to the Torqueflite.

To swap to a cable-type throttle linkage you need the throttle pedal with it's bracket, the cable and the whole transmission throttle pressure linkage including the manifold bracket.
Author:  SlantSixDan [ Thu Nov 05, 2009 8:14 pm ]
Post subject: 
Yep, the transmission in the car is a very efficient Torqueflite 3-speed, not GM's pathetic 2-speed Powerglide.

Mileage with a good carburetor is always better than mileage with a bad one...!
Author:  rhy [ Fri Nov 06, 2009 2:03 am ]
Post subject: 
You are absolutely right. I must've been having a senior moment. It is most certainly a Torqueflight, and that is most certainly superior to a Powerglide. I have a lot of egg on my face. I forget words for things sometimes. The carb I bought was from a very, very highly rated ebay person, and it's identical to the one I had on there when I bought it. It was $50, and is brand new, not remanufactured. The previous one (which was identical) has gone at least 50,000 miles since *I've* owned the car, and I'm completely certain it drove a lot of extra miles before I owned it.

I'm not saying spending $200 on a diff carb wouldn't be better. I'm sure that that could be the case. However, that isn't an option. I don't have $200, and I already spent $50 on this one, and it looks GREAT other than having the wrong linkage. I considered ripping the linkage off the old one, but that would make it look so ugly. Looks like I'm going to have to weld a custom piece like they did on the old one.

I'm not an expert. Not by any stretch. But I've built this car stem to stearn myself, and am very confident in the carb I already bought. I'm just not looking forward to wrestling the linkage together and was hoping there was a bracket or something I could buy that would do the job and look good. I'm quite sure I can manufacture one myself, but that's going to be a pain in the ass, and may not look quite as good. It will suffice though, the old one sufficed for as near as I can figure over 100,000 miles!!
Author:  walpolla [ Fri Nov 06, 2009 3:38 am ]
Post subject: 
Quote:
.... The carb I bought was from a very, very highly rated ebay person, and it's identical to the one I had on there when I bought it. It was $50, and is brand new, not remanufactured.....
hello,
rhy,is the carb you are talking about the one that you gave the Ebay link to?
If so,it quite clearly says it is rebuilt and remanufactured. See this quote from the Ebay site.

"This item is a rebuilt Holley 1 barrel Carburetor, OEM # 3671642, Holley #6372, date code 2081, Cardo part #P151H. This is a Brand New remanufactured carb. . It fits 1972 Dodge Truck and Van with 225 slant 6 cylinder engines."

The "brand new" bit in the ad probably refers to "new" gaskets and the like.
Not many of us forum members think much of "remanufactured" carbs - as you might have gathered !
However,I hope you have got a good one.There are a few (very few),that work as they should after work at the hands of the remanufacturers.

regards,Rod
:D [/quote]
Author:  6shotvanner [ Fri Nov 06, 2009 6:47 am ]
Post subject: 
I'm always in favor of 'farmer designed and built',look around in your junk box,check out the Edelbrock/Holley pieces at the parts store.Adapt,adapt,adapt before cut,cut weld because if it cann't be adapted well at least it ain't ruined.Good luck :)
Author:  vynn3 [ Fri Nov 06, 2009 7:10 am ]
Post subject: 
Quote:
I'm not saying spending $200 on a diff carb wouldn't be better. I'm sure that that could be the case. However, that isn't an option. I don't have $200, and I already spent $50 on this one, and it looks GREAT other than having the wrong linkage.
I completely understand. I've been almost EXACTLY where you are now, except my carb was the exact year and model I need for my application.

In the end, I had to spend MORE than $200 getting my "rebuilt" carb (that looked great, by the way) RE-rebuilt by a local, reputable shop to finally make it work properly. All we're doing is trying to prevent you from making the same mistakes we've all made.

Hopefully, you're one of the rare, lucky guys that got a good carb. Here's hoping!
Author:  Wizard [ Fri Nov 06, 2009 7:36 am ]
Post subject:  Unfortunely this is common.
What you have seen is rather common. The carb cores were collected and sent to few rare sloppy rebuilders take apart willy hilly and aggressively clean and put it back together who know what with unknown correct springs/parts. That's a question mark.

Like me, I picked up a *unwanted* holley 6520 off the scampay that didn't state what it was as I was on hunt for a 5220 and this was also blasted, big no no unless is done with soda powder. The shafts bushings were not rebushed. PS: I *rather* would pick up caked on dirty virgin carb with no corrosion (there's plenty out there that are not corroded). Then assess the shaft wear and find the REPUTABLE rebuilder and have them have at it.

In the end got a low miles ORIGINAL weber from first owner and that helped.

Good luck with this carb.

Cheers, Wizard
Author:  SlantSixDan [ Fri Nov 06, 2009 7:46 am ]
Post subject: 
Quote:
The carb I bought was from a very, very highly rated ebay person
That doesn't mean anything.
Quote:
is brand new, not remanufactured
Nope, it's "remanufactured".
Author:  walpolla [ Sat Nov 07, 2009 11:11 pm ]
Post subject: 
rhy,
it looks like we scared you off with our comments about "remanufactured" carbs.. that is not the intention here. how are things going? have you had any success with the changeover?


regards Rod :?
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