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China YFA

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Georgia200
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Posts: 242
Joined: Sun Oct 21, 2018 3:38 pm

China YFA

Post #1 by Georgia200 » Tue Mar 10, 2020 2:51 pm

Any idea how many cfm the China YFs on ebay flow?

They advertise them for 240-250-300.

Any difference between the hot air and electric choke?

My eventual plan for the 250 is a 2V or multiple carb, but for now, I want to stuff as much air into it as I can with a 1V.

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chad
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Location: Lawrence Swamp, S. Amherst, MA

China YFA's cfm

Post #2 by chad » Tue Mar 10, 2020 6:00 pm

what is it - the BBC? There's a thread on here for this large 1v (tq monster).
I know it as an 80s fox-bodied 3.8L (231ci) bent6 heaviy burdened (pollution controlls) carb.
If it wuz lower (not so tall) I'b try it in my 250 bronk.
I think the YFA is the 'big six" carb (240/300) so may flow 190 crm? & B too tall?

My RBS is 215 and for low rise hoods (250 Mavrick?) but -0- tunability...
There's a late model Rocester (che%^^y i6) that flows highest I believe...
"Big thing is only make one change at a time. Change 2 or more things at a time it becomes difficult to figure which change helped or hurt" turbo2256b » 1/16/2017
Chad - '70 LUEB on '77 frame (i.e. PS, D44, trapezoidal BB 9", 4.11), '69 250ci, NV 3550 & DSII, "T" D20/PTO, 2" SL, 1" BL, 4 discs, 33"X15", tool boxes, etc. Seeking: Hydraulic gear motor for Koenig pto. chrlsful@aol.com (413) 259-1749

Georgia200
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Posts: 242
Joined: Sun Oct 21, 2018 3:38 pm

Re: China YFA

Post #3 by Georgia200 » Tue Mar 10, 2020 7:06 pm

Your reply makes no sense to me.
Simple question: Any idea how many cfm the China YFs on ebay flow?

https://www.ebay.com/itm/New-Carburetor ... SwHX5d8v~v

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xctasy
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Re: China YFA

Post #4 by xctasy » Tue Mar 10, 2020 9:46 pm

The various versions of the YFA with the 1.31 inch venturi and 1.69 inch throttle flow 190 to 195 cfm.

The replacement Chinese built YFA's have simplified chokes. Its marketed as a 200/250 small six and 240/300 big six 1bbl carb replacement. Its not a direct replacement for any particular year. AMC's and Jeeps with the 196/232/258 have the same Chinese carb listing. I think the 170/194?/225 slant six has a similar Chinese listing.

You have to decide how you deal with the lack of Hot Air pipe.

The Chinese have done a nice job with this carb, but its just a generic carb. You have to figure out what to do with the various connections. Lots of changes from 1968 to 1985model years.
Image
XEC Ltd ICBE's Inter Continental Ballistic Engines-
FAZER 6Bi (M112 & EEC5) or FAZER 6Ti (GT3582 & EEC5) 425 HP 4.1L/250 I-6
FAZER 6V0 3x2-BBL Holley 188 HP 3.3L/200 I-6 or 235 HP 4.1L/250 I-6
X-Flow Engine Components Ltd http://www.xecltd.info/?rd=10

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chad
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Location: Lawrence Swamp, S. Amherst, MA

China YFA

Post #5 by chad » Wed Mar 11, 2020 12:16 am

[quote="Georgia200"]Your reply makes no sense to me.
Simple question: Any idea how many cfm the China YFs on ebay flow?/quote]
U better ask them'n leave us alone then...
U do know U can, yes? ("Contact seller")
Otherwise ck our own 'For Sale" & the closest big box retailer to U~

Repeat and Pete re:
"...I think the YFA is the 'big six" carb (240/300) so may flow 190 crm? & B too tall?..."
wish I could explain in a different way, I can't...
:evil:
"Big thing is only make one change at a time. Change 2 or more things at a time it becomes difficult to figure which change helped or hurt" turbo2256b » 1/16/2017
Chad - '70 LUEB on '77 frame (i.e. PS, D44, trapezoidal BB 9", 4.11), '69 250ci, NV 3550 & DSII, "T" D20/PTO, 2" SL, 1" BL, 4 discs, 33"X15", tool boxes, etc. Seeking: Hydraulic gear motor for Koenig pto. chrlsful@aol.com (413) 259-1749

Georgia200
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Posts: 242
Joined: Sun Oct 21, 2018 3:38 pm

Re: China YFA

Post #6 by Georgia200 » Wed Mar 11, 2020 7:35 am

Im thinking about taking my spare head to the machine shop and having tripower mounts brazed on. I dont like the Offy setup and its about the same cost either way. I can block the outside carb mounts off and run a single until I locate suitable carbs.

Its tough to find the carbs anymore. they are out there but very spendy. The China 1100s may be an option.

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