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| Carter YF 938.... differences; 12.04 Carburetor | |
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| Tweet Topic Started: Apr 6 2009, 11:35 AM (3,953 Views) | |
| Luizbrasil | Apr 6 2009, 11:35 AM Post #1 |
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Anybody knows the difference between a Carter carburetor that fits a F4-134 engine from the one that fits a 6 cil. engine (6-161 or 6-226 engine)? The jet, the rod (metering), the low speed jet and the needle and seat assy are the same? There are another difference? Iīm asking because I got an old YF938, but I dontīt know if it is from a 4 cil. model or 6 cil. model, and I want to restore and use it in a F4-134 engine. There is any inscription in the carburetor body that shows if it was assembled for a F4-134? I found a repair kit CS-1822 at the carbqueen, but they donīt tell me if in this repair kit they have the jet, the rod (metering), the low speed jet and the needle and seat assy, I said above. In another words, I would like to know if anybody knows about CS-1822 kit, and if it is sufficient to substitute this internal parts above related, or I have to buy it in separate (if it exist). There is a COMPLETE repair kit? Luiz Spegiorin |
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| oldtime | Apr 6 2009, 03:02 PM Post #2 |
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Luiz, As you know the Carter YF was used with many different models and makes of vehicles. If your Carter YF is marked 938, 938 SC or 938 SD you have a correct carburetor for an F-134 engine. The number will be found stamped to a web / gusset located on the side of the carburetors body. If the number is not 938, 938 SC, or 938 SD it may be for a different engine. If the carburetor was calibrated for a different engine application it cannot function correctly for the F-134. It cannot be adapted to function for an engine application it was not designed for. The metering rod and its related main jet will also have a different calibration than what you are seeking. First..... please verify the number found on the web of your Carter YF. The correct application of the Carter YF can be identified from that number. After your Carter YF number is verified we can then provide future assistance. Also it may be helpful to reveal what model of Jeep you plan to use this with. As always thanks for posting here on the CJ-3B Bulleten Board ! |
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Currently building my final F-134 powered 3B . Rock Crawler using factory parts from the Willys Motors era (1953-1963) http://s4.zetaboards.com/CJ3B_Bulletin_Board/topic/30228766/1/#new | |
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| Luizbrasil | Apr 6 2009, 04:33 PM Post #3 |
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I bought two used Carter YF938 in a store for used parts for jeeps only. One is complete, and the other incomplete, just to take any pieces, if I need. The incomplete carburetor, has an inscription "H6 938SD" in the side of teh body. The other (complete) has only "938SD" inscription in the side. The trouble is that here in Brazil, this Carter YF938 model was used in 4cil. hurrycane (F4-134 engine) and 6cil. (I donīt know de engine model, but I think itīs Continental), and I donīt know if there is any difference between YF938 from a 4cil. (F4-134) to a 6 cil. |
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| oldtime | Apr 6 2009, 05:53 PM Post #4 |
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Luiz, I am unfamiliar to the H6 prefix. Otherwise I say both of your carburetors are calibrated correctly for the F-134 engine, not the F-161. The SD suffix basically designates you have the latest revisions or upgrades for the YF 938. Since both of your carburetors are Carter YF 938 SD, all parts should be directly interchangeable. Your metering rods for the SD should be Carter #75-1500. (stamped on the rod) These rods and the associated main jet are very rarely available at this time The carburetor used with the 161 Hurricane is known to have a different number. See: http://www.thecarburetorshop.com/PkitW.htm#PWILLYS |
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Currently building my final F-134 powered 3B . Rock Crawler using factory parts from the Willys Motors era (1953-1963) http://s4.zetaboards.com/CJ3B_Bulletin_Board/topic/30228766/1/#new | |
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| Luizbrasil | Apr 13 2009, 10:57 AM Post #5 |
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If you are curious, I can send you a picture from the inscription H6 938SD. Send me an e-mail adress. I canīt attach a picture in this. The metering rod has #75-1500 stamped. |
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| oldtime | Apr 13 2009, 11:58 AM Post #6 |
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Luiz, I'd like to see your pics. Pic posting instruction is available here: http://z4.invisionfree.com/CJ3B_Bulletin_B...hp?showtopic=37 Everyone is welcomed to contact me by clicking onto my screen name "oldtime" or just email at .... imnacj3b@yahoo.com |
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Currently building my final F-134 powered 3B . Rock Crawler using factory parts from the Willys Motors era (1953-1963) http://s4.zetaboards.com/CJ3B_Bulletin_Board/topic/30228766/1/#new | |
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| Luizbrasil | Apr 13 2009, 04:42 PM Post #7 |
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http://i629.photobucket.com/albums/uu16/Lu...l/Carter001.jpg http://i629.photobucket.com/albums/uu16/Lu...l/Carter006.jpg Iīm trying... Luiz Spegiorin |
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| oldtime | Apr 13 2009, 05:30 PM Post #8 |
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Those pics work just fine for me Luiz, Yes that particular fuel metering rod is standard for the YF 938 SD. It should be mated to the Carter # 120-166 main jet. See the specsifications here: http://www.film.queensu.ca/cj3B/Photos/Tec...er/YF1961p2.gif If you can send us another detail view for the other end of the metering rod so we can see the "steps". I will take a look at my several 938 SD carburetors when I get home later this month. I will check them all for the H6 . From your pic I will say the H6 is not a prefix to the 938 number. Here is a great little reference on Carter YF variations: http://www.film.queensu.ca/cj3B/Tech/Carburetor.html |
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Currently building my final F-134 powered 3B . Rock Crawler using factory parts from the Willys Motors era (1953-1963) http://s4.zetaboards.com/CJ3B_Bulletin_Board/topic/30228766/1/#new | |
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| Luizbrasil | Apr 15 2009, 01:35 PM Post #9 |
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Oldtime, I could not find any identification in the main jet, and thatīs my original trouble. I donīt know if the main jet has the correct size for a Carter YF938 to be used in a F4-134, and if there are another internal parts with specific sizes to be used in this configuration (F4-134 engine)... Iīll send you antother pictures from the metering rod today (late). |
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| Luizbrasil | Apr 15 2009, 08:46 PM Post #10 |
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Pictures from fuel metering rod and main jet. It doesnīt have codes or numbers... How can I know itīs specification? http://i629.photobucket.com/albums/uu16/Lu...l/Carter004.jpg |
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| oldtime | Apr 15 2009, 09:50 PM Post #11 |
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The number 166 should be found stamped into the small flat top surface of the main jet. If you still find no number then you can check the main jet diameter. It is about .094. The exact specifications are shown on this sheet: http://www.film.queensu.ca/CJ3B/Photos/Tec...er/YF1961p2.gif You can click the bottom right corner to magnify the page. From what I can see your metering rod looks to be in decent condition; not excessively worn. An exsessively worn rod will appear to be tapered (without steps) Measure the steps and compare your findings with the dimensions given on the specification sheet. |
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Currently building my final F-134 powered 3B . Rock Crawler using factory parts from the Willys Motors era (1953-1963) http://s4.zetaboards.com/CJ3B_Bulletin_Board/topic/30228766/1/#new | |
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| Luizbrasil | Apr 17 2009, 12:24 PM Post #12 |
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I tryed the link you suggested, but I doesnīt run... ..."Sorry. The file you requested does not exist or has been moved. Please go to the Queen's University Film and Media home page." Do you have another link? |
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| oldtime | Apr 19 2009, 01:26 PM Post #13 |
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Luiz, I re-entered the link. Try it now. |
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Currently building my final F-134 powered 3B . Rock Crawler using factory parts from the Willys Motors era (1953-1963) http://s4.zetaboards.com/CJ3B_Bulletin_Board/topic/30228766/1/#new | |
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| jyotin | Apr 20 2009, 06:50 PM Post #14 |
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Be careful when mixing and matching carb parts from various carbs. The land mine here is that many parts will physically interchange, but not function the same. If the part is labeled (some are, some aren't) and the label is different from what you are replacing, then don't swap it even if it fits.. |
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It's just my luck that something good is going to happen to me today. 54 - 3B - down on the farm 67 - cj6 - former state of Alabama vehicle ?? - cj5 T98a - made from spare parts - Ford tractor blue ?? - cj5 T98a - made from spare parts - Jeep green | |
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| Luizbrasil | Apr 22 2009, 04:10 PM Post #15 |
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Thatīs wright. Iīm not mixing parts. I have a complete carburetor, and I bought a complete body with a complete air horn, both were assebled together. So, I bought a complete throttle body to complete this second carburetor. I mesured the main jet diameter, and I found o,09375. I think itīs the correct one! I tried to buy a complete spare parts kit from carbqueen, but they couldnīt help me. They have the kit, but they canīt sell it from me. So, I bought one "generic" kit from kayserwillys.com. |
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