Author Topic: RE: 71 CB750 Source for float needle and solid air screw  (Read 995 times)

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Offline chewbacca5000

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RE: 71 CB750 Source for float needle and solid air screw
« on: November 18, 2014, 09:12:58 AM »
Looking for new float needles and solid air screws.  If anyone can point me in the right direction it would be appreciated.

Offline flybox1

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« Last Edit: November 18, 2014, 09:53:45 AM by flybox1 »
'78 750K (F3 engine) PD42b's, Modified airbox w/K&N  filter, 40/110 jets, 1 needle shim, IMS@ 1 turn out. Kerker + Cone 18" QuietCore

Past Bikes
1974 550K0 (stock), 1973 CB350F (stock), 1983 Yamaha XS400K (POS)
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"Knowledge without mileage equals bullsh!t" - Henry Rollins

"This is my CB. There are many like it, but this one is mine…"

Offline chewbacca5000

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Re: RE: 71 CB750 Source for float needle and solid air screw
« Reply #2 on: November 18, 2014, 10:02:46 AM »
http://4into1.com/idle-air-mixture-screw-honda-cb750k-1969-1971/

double check the part # on this one.... http://4into1.com/genuine-honda-2-5-float-needle-valve-assembly-16011-375-004-cb100-cb125-cb72-cb77-cb450-cl450-cb750k/

Thanks that is a big help!  No ideal what difference the numbers make on the seat.  Stock is 2.0 this one is 2.5.  They have 4 kits for $43 bucks https://store-jcd9tbp.mybigcommerce.com/carburetor-rebuild-kits-complete-set-honda-cb750k-1972-1976/

I hate buying kits since I am nearly always disappointed, but others seem to like 4into1 so I might give them a try.

This is really what I want, but says out of stock.

http://4into1.com/replica-keihin-2-0-float-needle-valve-assembly-16011-375-004/


Offline flybox1

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Re: RE: 71 CB750 Source for float needle and solid air screw
« Reply #3 on: November 18, 2014, 10:48:01 AM »
yeah...i saw the 2.0's were out.
what does that # indicate?  float valve ID?
'78 750K (F3 engine) PD42b's, Modified airbox w/K&N  filter, 40/110 jets, 1 needle shim, IMS@ 1 turn out. Kerker + Cone 18" QuietCore

Past Bikes
1974 550K0 (stock), 1973 CB350F (stock), 1983 Yamaha XS400K (POS)
77/78 cool 2 member #3
"Knowledge without mileage equals bullsh!t" - Henry Rollins

"This is my CB. There are many like it, but this one is mine…"

Offline chewbacca5000

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Re: RE: 71 CB750 Source for float needle and solid air screw
« Reply #4 on: November 18, 2014, 11:49:32 AM »
yeah...i saw the 2.0's were out.
what does that # indicate?  float valve ID?

ID is my guess.

Offline dave500

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Re: RE: 71 CB750 Source for float needle and solid air screw
« Reply #5 on: November 21, 2014, 11:40:08 PM »
just solder up your holey airscrews?

with holes you can only enrichen so far even when the needle bottoms out,you might need a little more?
your results may vary?

Offline chewbacca5000

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Re: RE: 71 CB750 Source for float needle and solid air screw
« Reply #6 on: November 22, 2014, 05:39:31 AM »
Thanks Dave.  I tried that once but did not have the best luck maybe I will try it again.

Offline dusterdude

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Re: RE: 71 CB750 Source for float needle and solid air screw
« Reply #7 on: November 22, 2014, 01:10:31 PM »
Are these the air/fuel mixture screws?
mark
1972 k1 750
1949 fl panhead
1 1/2 gl1100 goldwings
1998 cbr600 f3

Offline chewbacca5000

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Re: RE: 71 CB750 Source for float needle and solid air screw
« Reply #8 on: November 22, 2014, 01:31:15 PM »
Are these the air/fuel mixture screws?

Yes.  The solid ones give much more control over idle IMO.  I like to be able to richen up a bit if I want like Dave is saying.

Offline dusterdude

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Re: RE: 71 CB750 Source for float needle and solid air screw
« Reply #9 on: November 22, 2014, 04:39:19 PM »
If i dont forget,ill look at my spare rack and see what i have
mark
1972 k1 750
1949 fl panhead
1 1/2 gl1100 goldwings
1998 cbr600 f3

Offline dave500

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Re: RE: 71 CB750 Source for float needle and solid air screw
« Reply #10 on: November 22, 2014, 06:57:49 PM »
easy to solder them,be sure its well clean and bright inside the holes,apply the solder then sand it down smooth,all the service kits these days have the hole type I think?