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05-25-2020, 11:18 AM | #11 | |
Searching for The Way
Join Date: Oct 2009
Location: Medina, Ohio (NEOHIO)
Posts: 11,421
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Re: More VC625 carb voodoo/experimentation
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05-25-2020, 11:29 AM | #12 |
VC 460 CLONE GONE WILD
Join Date: Oct 2014
Location: Ray BY The Bay NJ
Posts: 10,594
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Re: More VC625 carb voodoo/experimentation
IMHO I would install the adjustable main jet before doing too much drilling of the other pieces. You would be surprised how it's adjustment affects the whole rpm scale just off idle.
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05-25-2020, 12:28 PM | #13 | |
Love my Big Block
Join Date: Oct 2009
Location: Florida
Posts: 1,553
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Re: More VC625 carb voodoo/experimentation
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05-25-2020, 12:50 PM | #14 | |
VC 460 CLONE GONE WILD
Join Date: Oct 2014
Location: Ray BY The Bay NJ
Posts: 10,594
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Re: More VC625 carb voodoo/experimentation
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05-25-2020, 01:18 PM | #15 |
Getting Wild
Join Date: Oct 2019
Location: Cultural Wastelands Of Central MI
Posts: 113
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Re: More VC625 carb voodoo/experimentation
Because, sir....you were one of the fortunate ones. You didn't pay your debt to society owning retail auto parts stores.....and weren't cursed with this goofy photographic memory......so you don't gotta' head filed full of useless stuff. I *think* that filter is for a late 70's/early 80's Chrysler product with a "Bent Six".....if my memory serves me correctly.
If you're not 60+....you ain't gonna' know what a "Bent Six" is. You're young and lucky..... Jim |
05-25-2020, 05:30 PM | #16 |
Love my Big Block
Join Date: Oct 2009
Location: Florida
Posts: 1,553
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Re: More VC625 carb voodoo/experimentation
Anyone make any significant changes to the air filter ?
I made a rudimentary filter mount for a K&N type push on/in and it is running much better..also I kinked my pulse line some to cut the pressure down see how that flies until I can get to the auto parts 3040 filter bypass trick thingy |
05-25-2020, 06:43 PM | #17 |
VC 460 CLONE GONE WILD
Join Date: Oct 2014
Location: Ray BY The Bay NJ
Posts: 10,594
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Re: More VC625 carb voodoo/experimentation
On my VC 625 Shepard modified carb I have the oval K&N filter. This is mounted on a modded VC 460 using the Mikuni intake manifold as an adapter. All the clones LOVE increased air flow. There a BIG power gains to be had if you can keep the mixture correct along with having your fuel system able to keep up with the increased demand. Pic of the whole set up on page 13 of my Vc 460 build.
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05-25-2020, 07:03 PM | #18 | |
Crazy Ole Man
Join Date: Jan 2016
Location: Owego NY
Posts: 2,758
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Re: More VC625 carb voodoo/experimentation
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comes pre oiled |
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05-26-2020, 02:18 PM | #19 |
Getting Wild
Join Date: Oct 2019
Location: Cultural Wastelands Of Central MI
Posts: 113
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Re: More VC625 carb voodoo/experimentation
Pulled carb for the zillionth time, drilled the pilot to .4 mm (formerly .3mm), and installed the secondary emulsion tube with fuel metering holes opened to .8 mm.
Upon the first attempted start up after carb reassembly, I learned that no matter how you have one of these carbs tuned, it won't start run with hemostats pinching the fuel line off, so there's yet another valuable tuning tip for all. It's still God-Awful cold blooded until warmed up, but it runs really well with the above setup. No surging or serious flat spots, as good an idle as you're gonna' get off a big 'thumper' (1000 rpm).....and the plug looks good. I think I'm gonna' stop here, decide whether I'm gonna' put in hi-speed gears, and maybe try a little further tuning with the adjustable main. Jim |
05-26-2020, 07:34 PM | #20 |
VC 460 CLONE GONE WILD
Join Date: Oct 2014
Location: Ray BY The Bay NJ
Posts: 10,594
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Re: More VC625 carb voodoo/experimentation
I would imagine there is a lot more to be gained by adding an adjustable main jet and really dialing it in for max power.
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