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Topic Summary

Posted by: Jax
« on: May 25, 2021, 01:11:08 AM »

I have one on my ‘55 CJ3B. It’s good carburetor, a modern
version of the Zenith 228 that’s been in use since the ‘40s.
There’s an external adjustment for air/fuel mixture when going
up into higher elevations. It has @ CFM195, a bit high for the F-134
Hurricane 4cyl. engine, but that can be remedied w/a fuel pressure
regulator. When adjusted well there’s smooth acceleration,no stumble
or hesitation. Of course w/5.38 differentials “Warp⚡️Speed” is still<60.
Posted by: SteveK
« on: April 15, 2021, 01:30:14 PM »

Thanks!  I just ordered one for backup.  good price.
Posted by: Scott Blystone
« on: April 15, 2021, 12:59:27 PM »

Haven't posted in years and now you all got a new board.  Anyhow - I bought one of these from WillysAmerica ($200).  It is an original and was a direct swap.  Runs sooo much better than my Solex or my rebuilt original Carter.  Their website gave a little more history on them:

use for:
1953 to 1963 F-4 134 Hurricane 475
4X4 Wagon / 4WD Truck / CJ-3B / CJ-5
V-groove Top for Air Filter Clamp

New Inventory, Limited Supply! Made for Jeeps used by the Turkish Army back in the 1970's, never seen the light of day until discovered in a warehouse 3 years ago. Correct appearing carburetor that bolts right up.
Refer to linkage Image

 I have subsequently purchased several more for future projects because they will not be available forever.  https://shop.willysamerica.com/New-old-replacement-stock-Carter-style-carburetor-p/923808c.htm
Posted by: SteveK
« on: February 23, 2021, 03:57:09 PM »

After much consideration, feedback, research...i finally bought a Universal UN2 Carb direct from the US supplier/importer: Daytona ($299+$20 for aircleaner +$25 s&h). 

Installed the shiny thang a week ago. Pretty easy to install, very minimal modification required.  All i had time to do was roughly adjust it by ear (the instructions are to adjust lo/hi jets at 500rpm then 2000rpm w/ a tach, which i don't have).  Then i took off snowplowing for 2+ hours.  All seems fine, tho' i had to re-set where the fuel filter sits, as it was vapor-locking (i think) when fuel got too hot from filter sitting on the block btwn the heater hose and valve cover gasket (duh!) (remember i have an F-head).

So Clem runs better already.  (Hopefully as good as a YF938 would!)  I will keep y'all posted.  Will start a new thread, once i get it properly adjusted to spec, to report on performance.

If it doesn't work out, i will swap it for the good olde 938...  Anyone wanna buy a yf964??
Posted by: PercyUK
« on: February 07, 2021, 09:09:07 AM »

It seems that I am in the minority here and must be the only person who does not have a problem with the Solex, which my 3a originally came with.  I am definitely in favour of keeping any jeep stock, if at all possible, and would always favour the rebuild option first. 
I agree, don't go for the "off shore crap" like Solex,  they were used by Porsche and Mercedes, amongst others, and we all know what poor engineers the Germans are.
 Good luck with  whichever option you choose.
Posted by: SteveKfl
« on: February 05, 2021, 11:54:44 AM »

Just the label "universal" means "compromises" to me.  "Compromise" means "something is not right, but merely close to acceptable", to me.  Not all engines will perform the same, especially if other conditions vary from the "established standard", at least in my mind.  I agree with Rus and Bruce, seek help from Scott P, an established "Willys carb expert" with a track record to support that title, IMO.  As Rus said, if you go the "universal" route, please let us all know of your experience.  Technology changes, and maybe there is a new product out there that works as good as the old "renewed", or maybe even better.  We should never be "too old to learn new tricks/products".  Good Luck! 
Posted by: Rus Curtis
« on: February 05, 2021, 10:15:14 AM »

Quote from: Bruce_W on February 04, 2021, 01:30:25 PM
The best solution in my mind is to let Scoutpilot build you a YF938SD. Then it will be right, and Made in America 🇺🇸. I’m sure he has a core, but if not, I can probably come up with one.
  If you’d rather spend your money and take chances on offshore crap, we’ll, it’s your time and your money.
  And just because K-W sells something does not mean it is good. In fact, to me, it makes it more suspicious. JM$.02.
BW


Not a bad idea....

I embraced, long ago, the preference of rebuilding when I could.  I knew the part fit and would work as intended after the needed repairs.  There are stories of having to add other after market components, i.e. electric fuel pumps, regulators, etc. to tweak the system to get it to work. 

But, if you do go with that carb, let us know how it works for you!
Posted by: Bruce_W
« on: February 04, 2021, 01:30:25 PM »

The best solution in my mind is to let Scoutpilot build you a YF938SD. Then it will be right, and Made in America 🇺🇸. I’m sure he has a core, but if not, I can probably come up with one.
  If you’d rather spend your money and take chances on offshore crap, we’ll, it’s your time and your money.
  And just because K-W sells something does not mean it is good. In fact, to me, it makes it more suspicious. JM$.02.
BW
Posted by: SteveK
« on: February 03, 2021, 08:47:24 PM »

I have '50 CJ3A with a F-head.  It came with the F-head, no idea of year of the motor (#648830).  And came with the YF964S.  I do not know how well it ever ran with that setup (was barely running when i bot it 3y ago). 
I just ordered a fuel pressure regulator/reducer, to try to tamp down the P (yes, it also came with an electric fuel pump...that is another issue).  That is my last try...then i sell that 964 to a Stovebolter, and maybe try the Daytona Universal UN2, PLUS a mechanical pump.  I found them for $299 from the Daytona supplier directly, plus $20 for the air filter.  Alas, they are now made in Taiwan...only marginally better than China...but there are rebuild kits available.
I have read plenty bad reviews of the Solex carbs...but none for this Universal.
Posted by: scoutpilot
« on: February 01, 2021, 05:58:13 AM »

If you are trying to use the 964 on a Jeep, then yes, you will have problems. It is designed for the Chevy Stovebolt 6. Which motor in which model year Jeep are you using?
Posted by: PercyUK
« on: February 01, 2021, 04:09:36 AM »

Hi, sorry I can't help you. I know there is a lot of chat re the Solex but they did fit them to the Hotchkiss and later Mahindra and I have had no problems with mine fitted to my 3A. I have not heard of the new carb you are referring to but I would suggest that if Kaiser are selling them then they should be OK. If, like me, carbs are a bit daunting, then the fact that the Solex and the new unit is simpler than the Carter can't be a bad thing.
Good luck with whichever choice you make.
Posted by: SteveK
« on: February 01, 2021, 01:22:39 AM »

So, noone on here has tried one of these?!?  Daytona Universal UN2.  I guess they've made/used them in South America since the 50's.

I read a chat on a Stovebolt Forum, it was fairly positive.  That is, unless if one is a complete Carb Wizard.  Neither me nor my jeep "Clem" are wizards ...we just needs something that works better than this #$%&@# YF964s that is came with..  Too much carb, runs always too rich, floods the motor under load, etc.
Posted by: SteveK
« on: January 01, 2021, 10:10:44 PM »

I see that Kaiser-Willys has same carb, for $330:    https://www.kaiserwillys.com/new-fully-universal-carburetor-fits-50-71-willys-jeep-with-4-134-f-engine

There's some limited Q & A on there too.  I too would like to know if anyone has experience with this replacement!

The F-Head motor (in my CJ3A) has a Carter YF 964S...which i am struggling with somewhat.  I have read that Solex's aren't wonderful.
Posted by: buck toenges
« on: November 13, 2020, 01:19:24 PM »

I saw this carb on the jeepsterman web site.  Looks like a carter yf type carb.   https://www.thejeepsterman.com/products/3292-new-fully-universal-carburetor-1950-1971-jeep-and-willys/.  They said it was a brand new carb and not a rebuild.  Anybody know what these are?

Thanks,
Buck