Posted: Thu Jan 05, 2017 11:41 pm Post subject: Can you use the WO Carter on the M38's L134?
I was asked this question in an email and I want to share it here for all to benefit from.
Since you are the go to guy for M38 questions, I have a question I hope you can answer for me. I purchased a 1951 M38 all in pieces. It came with a bunch of old parts and some new parts. It also came with two carburetors...one is a Carter WO which I rebuilt and the other is a Carter YF with no numbers on it.
Since I wonít be wading in any water after the frame-off rebuild, can I use the WO carb on the M38 (assuming I have the top air tube for it, which I have 2-3)? The throat diameter is the same diameter as the manifold, but the YF is much larger. Iíd rather not purchase the original YS-637S if I donít have to since Iím also going to convert it to 12 v (non-original).
Well Mark, the WO will work ok with minor alterations to the linkage. You already have the stamped steel air inlet but I believe the diameter for the hose to the air cleaner is different.
Joined: Aug 22, 2016 Posts: 100 Location: Huntsville, AL
Posted: Fri Jan 06, 2017 6:02 am Post subject: Thanks
Thanks Wes. Helps a bunch. I have a couple different air horns so I'll check them out and see what the dimensions are. I'll make it work as long as the carb will work. Last resort, I can pick up a solex from Kaiser Willy's.
Forgot to mention, my WO is a downdraft carb and does not have the 90 degree bend in the upper cover as seen in your upper two pictures...more like the WO on bottom two.
Since I wasn't privvy to your private discussion with Brian I must ask what Air Horns are you referring to? The air horns that are the top carb casting that covers the bowl on both the WO and YS carbs or the stamped steel air horn on the civilian jeeps that pick up the duct from the air cleaner? _________________ Wes K
45 MB, 51 M38, 54 M37, 66 M101A1, 60 CJ5, 76 DJ5D, 47Bantam T3-C & 5? M100
Joined: May 30, 2014 Posts: 2861 Location: Texas Hill Country
Posted: Tue Feb 28, 2017 10:37 pm Post subject:
If I may. We are talking about the stamped steel civvy air horns.
When I bough my, ahem, project it came with a running L-head motor,
W-O carb and an aftermarket chrome air cleaner stuffed in where the
cowl battery box went. Connecting it all was a nasty hose and a stamped
steel civvy air horn with a huge self tapping screw right in the middle of
In searching for parts I sourced an oil bath air cleaner that came
with a decent civvy air horn, which I cleaned and painted and replaced
the one with the screw in it.
Fast forward about a year or so later. I bought a pile of stuff that was going
to a recycler. In there was another W-O carb. I found a home for it
as well as that air horn with the screw hole in it .
In the process of cleaning up the air horn the new owner discovered
it had an F script stamped in the top.
We are all good. I don't need another air horn, f stamped or not,
and am happy the new owner took the time to look and discovered the mark.
The lesson I was sending Mark was, especially since he had four
of the things, was it never hurts to look.
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