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 Post subject: Carb woes
PostPosted: Thu Jun 23, 2005 9:20 am 
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3 Deuce Weber

Joined: Fri Feb 18, 2005 11:09 am
Posts: 52
Car Model:
...


Last edited by blue195 on Thu Dec 07, 2006 10:31 pm, edited 1 time in total.

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 Post subject:
PostPosted: Thu Jun 23, 2005 9:33 am 
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TBI Slant 6

Joined: Tue May 17, 2005 8:05 am
Posts: 176
Location: Portland OR
Car Model: 1964 Valiant 2dr post
I can rebush carbs...but what kind of carb?

I charge $25 for a Qjet...but I rarely do any other types so I would have to know what kind of carb to tell you if I can...and what I would charge.

Gearhead

_________________
64 GTO...10.80's@122 on street radials
Destroked 455, Qjet, stock ign, 2400 stall

64 Valiant
Old 225, 4spd, 2.92-8.75, 2bbl, headers
dual 2.25"
Image


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 Post subject:
PostPosted: Thu Jun 23, 2005 9:39 am 
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3 Deuce Weber

Joined: Fri Feb 18, 2005 11:09 am
Posts: 52
Car Model:
a bag of Fritos


Last edited by blue195 on Thu Dec 07, 2006 10:32 pm, edited 1 time in total.

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 Post subject:
PostPosted: Thu Jun 23, 2005 10:18 am 
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TBI Slant 6

Joined: Tue May 17, 2005 8:05 am
Posts: 176
Location: Portland OR
Car Model: 1964 Valiant 2dr post
Hmmm...although I've built a number of those....including the one on my 1972 Mustang fastback...I've never done the throttle shafts on one. The Mustang is in storage right now so I can't measure the t-shaft...but if it is 3/8" dia I can do it.

If it is larger diameter, I could do it if you found no other sources, but I would have to make a tool from scratch by modifying a valve guide reamer which is time consuming and would cost the price of the reamer...

So I'd be willing if its 3/8", but would rather you found another source if its larger. That said, if you can't find a reasonable source, I'd be willing to make the tool and do yours for $45, since I probably wouldn't use the tool, again because I don't really build many carbs or distributors anymore.

Will help if I can

Gearhead

_________________
64 GTO...10.80's@122 on street radials
Destroked 455, Qjet, stock ign, 2400 stall

64 Valiant
Old 225, 4spd, 2.92-8.75, 2bbl, headers
dual 2.25"
Image


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 Post subject:
PostPosted: Thu Jun 23, 2005 11:04 am 
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Board Sponsor & Contributor

Joined: Thu Oct 31, 2002 5:39 pm
Posts: 24786
Location: North America
Car Model:
Virtually all of the Carter, Holley and Stromberg throttle shafts used on Mopars of the '40s through '80s are between 1/4" and 5/16" diameter. Think the Carter BBS and BBD are 5/16" or so; Stromberg WA and WW are a little smaller. The first two years of Holley 1920 ('62-'63) might be a little larger than 5/16".

Karl-what are your thoughts on retrofitting Rulon-J bushings rather than the traditional brass or bronze?

_________________
一期一会
Too many people who were born on third base actually believe they've hit a triple.

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 Post subject:
PostPosted: Thu Jun 23, 2005 12:20 pm 
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TBI Slant 6

Joined: Tue May 17, 2005 8:05 am
Posts: 176
Location: Portland OR
Car Model: 1964 Valiant 2dr post
Dan:

Those look like they'd prbably work well, if they are firm enough to be press fit. But oilite bushings are cheap, easy, and proven. To be honest, unless your shafts are really bad it doesn't really make much difference. All engines need air to run, and with a cam, we even deliberately add air bypass to get more (Q-jets have this built in). So as long as the shaft is not so loose as to cause the blades to settle into various different positions upon returning to idle (causing changing idle speeds from signal to signal) the air leaking past the loose shaft will just be incorporated in the idle screw adjustment and a change to tighter bushings won't be noticed.

That said, I always bush my own for the extra precision...and...because most factory style carbs have very little true surface area for bearing contact. The baseplates are machined oversize except for an 1/8" or so right near the throttle blades. I don't know about these carbs, but many are that way. So when I install bushings, the surface area gets increased so much that wear and tear should never be an issue again.

Those bearings are interesting, but I just don't do enough anymore to look into changing.

Karl...ps...I can do 1/4 and 5/16...I should have said 5/16 shaft above...I bore the base plate to 3/8" to install the bushing...sorry.

So if the shaft is larger than 5/16" like holley four barrel then what I said above applies.

_________________
64 GTO...10.80's@122 on street radials
Destroked 455, Qjet, stock ign, 2400 stall

64 Valiant
Old 225, 4spd, 2.92-8.75, 2bbl, headers
dual 2.25"
Image


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 Post subject:
PostPosted: Thu Jun 23, 2005 5:28 pm 
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Board Sponsor
User avatar

Joined: Mon Jan 12, 2004 4:20 am
Posts: 2011
Location: Argentina
Car Model:
Quote:
Virtually all of the Carter, Holley and Stromberg throttle shafts used on Mopars of the '40s through '80s are between 1/4" and 5/16" diameter. Think the Carter BBS and BBD are 5/16" or so; Stromberg WA and WW are a little smaller. The first two years of Holley 1920 ('62-'63) might be a little larger than 5/16".

Karl-what are your thoughts on retrofitting Rulon-J bushings rather than the traditional brass or bronze?
If I need to rebush (yay, that's sounds akward) a carb, I use delrin. God I love delrin, they should give me free stock, I use it and promote it all over the world :)

_________________
Juan Ignacio Caino

Please use e-mail button istead of PM'ing. I do log in sometimes but I'll be answering quicker thru e-mail.


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 Post subject:
PostPosted: Fri Jun 24, 2005 1:30 pm 
Offline
3 Deuce Weber

Joined: Fri Feb 18, 2005 11:09 am
Posts: 52
Car Model:
....


Last edited by blue195 on Thu Dec 07, 2006 10:33 pm, edited 1 time in total.

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 Post subject:
PostPosted: Fri Jun 24, 2005 2:46 pm 
Offline
Supercharged

Joined: Thu May 12, 2005 11:50 pm
Posts: 6291
Location: So California
Car Model: 64 Plymouth Valiant
Id rather say .25" or .3125" myself..................

Actually for small stuff I prefer metric.......... (under 6-7mm) you don't get those nasty 32's or 64's they like to throw at you.............

_________________
Ed
64 Valiant 225 / 904 / 42:1 manual steering / 9" drum brakes

8)


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 Post subject:
PostPosted: Fri Jun 24, 2005 3:00 pm 
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Board Sponsor & Contributor

Joined: Thu Oct 31, 2002 5:39 pm
Posts: 24786
Location: North America
Car Model:
Myeaaah, c'mon. It's good brain exercise to have to remember that 23/64 is slightly larger than 11/32 is slightly larger than 5/16 is slightly larger than 1/4" . :-)

That said, an editor in a photography magazine made an excellent point about a year ago: Why doesn't anyone make a decimal inch ruler, that is, one on which each inch is divided into ten equal parts?

_________________
一期一会
Too many people who were born on third base actually believe they've hit a triple.

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 Post subject:
PostPosted: Fri Jun 24, 2005 3:25 pm 
Offline
Supercharged

Joined: Thu May 12, 2005 11:50 pm
Posts: 6291
Location: So California
Car Model: 64 Plymouth Valiant
Quote:
That said, an editor in a photography magazine made an excellent point about a year ago: Why doesn't anyone make a decimal inch ruler, that is, one on which each inch is divided into ten equal parts?

I've got one............... 18" steel ruler :mrgreen:

1/10
1/12
1/16 & 1/32 plus cards... 140 per inch
5/32 (have no idea what that's used for)

_________________
Ed
64 Valiant 225 / 904 / 42:1 manual steering / 9" drum brakes

8)


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 Post subject:
PostPosted: Fri Jun 24, 2005 7:50 pm 
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SL6 Racer & Moderator
User avatar

Joined: Sat Oct 19, 2002 12:06 pm
Posts: 8968
Location: Silver Springs, Fl.
Car Model:
Quote:

That said, an editor in a photography magazine made an excellent point about a year ago: Why doesn't anyone make a decimal inch ruler, that is, one on which each inch is divided into ten equal parts?
They do. I have one in my tool box. On one side it has 32's and 64ths. The other side is 50ths and 100ths. it is a "machinist" ruler.

_________________
Charrlie_S
65 Valiant 100 2dr post 170 turbo
66 Valiant Signet 170 nitrous
64 Valiant Signet
64 Valiant 4dr 170
64 Valiant 4dr 225


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 Post subject:
PostPosted: Fri Jun 24, 2005 8:14 pm 
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Board Sponsor & Contributor

Joined: Thu Oct 31, 2002 5:39 pm
Posts: 24786
Location: North America
Car Model:
50ths and 100ths is close, but not what I'm after.

_________________
一期一会
Too many people who were born on third base actually believe they've hit a triple.

Image


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 Post subject:
PostPosted: Fri Jun 24, 2005 8:48 pm 
Offline
3 Deuce Weber

Joined: Fri Feb 18, 2005 11:09 am
Posts: 52
Car Model:
>>>


Last edited by blue195 on Thu Dec 07, 2006 10:34 pm, edited 1 time in total.

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 Post subject:
PostPosted: Mon Jun 27, 2005 12:12 pm 
Offline
Turbo EFI
User avatar

Joined: Tue Feb 18, 2003 7:34 am
Posts: 2479
Location: Lubbock, Texas
Car Model: 1964 Plymouth Valiant V200 Sedan
This is the "decimal inch" 6" ruler I prefer. (Pickett 33E)
Yes, I am bilingual in measuring systems - I use whichever suits my purpose and audience.

Image

Image

_________________
"When you find a big kettle of crazy, it's best not to stir it." - Pointy-haired Boss

1964 Valiant V200, 225/Pushbutton 904
BBD, CAI, HEI, LBP, AC, AM/FM/USB, EIEIO


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