RememberA Weber carb is always a performance upgrade and is designed to deliver more fuel and air and make more HP then the stock carb did. Could be wrong.. but figured id try. If its better change your filter again in 500 miles that Shell Rotella will clean out a bunch of junk and can plug the filter early. The idle speed screw will be sensitive and should only take 14 turn to achieve the idle speed you like. I'm pretty sure your carb will be slightly different on some of the adjustments than this webpage says. Thank you so much. They are supposed to be shipped with 55's and I'm running 50's in mine. You need to check your spark plugs to see if you running rich or lean. That felt high to me, so I ran mine at 750 most of the time. Please Use your ear, not a scope or tuning instruments at this point. installation and minimize final tuning adjustments. Back tailored to most OEM engine setups to produce good gas mileage and good Thank you. 8. This is particulary true of new installations where you just purchased and installed a conversion kit and you are having problems. Set the Idle Speed Screw by backing out the Idle Thanks for the info. AC on. There are many of you running cars successfully with choke sizes outside this range so don't e-mail me about it. The engine should pick up speed and begin to smooth out. To confirm settings with the engine running. Other features include You must have JavaScript enabled in your browser to utilize the functionality of this website. JavaScript is disabled. Normal mixture gives you a light blue color. When cold less than that. The build is a 7120 4.0 head, block bored .040 over, comp cams 235 extreme 4x4 cam, HEI distributor, running 4psi to the carb when in doubt hit the . This is what mixture screw is turn or less, then the Idle jet is too rich (too Q: does it have an idle adjustment screw? It may not display this or other websites correctly. It is fast and accurate and will take alot of the guesswork out of it. The smallest idle jet available for this carb is a 40, I have 45's on there now. It is important to verify all linkage and levers are installed without binding and the linkage opens to full throttle and closes to the Idle Speed Screw. Our price is lower than the manufacturer's "minimum advertised price." will typically start at 1-1.5 Turns out. Are you sure they're 70's? I feel that Sidedraft DCOE , IDF and IDA carbs are easy to tune but you have to have a real feel for Rich and Lean and understand how the carb works. The IDF features diaphragm type SET UP AND LEAN BEST IDLE ADJUSTMENT. The Mixture screw closest to the engine will no doubt need to be in much farther than the outer mixture screw. I'm on my third set of plugs. You (turned in) the speed screw. Adjust to best, fastest and smoothest running point. by hand and inserting a wood block or wedge of some kind to hold open When you purchase through links on our site, we may earn an affiliate commission, which supports our community. capabilities, compact alloy body and wide variety of available sizes, the ITS IDEAL SPECIFICATIONS AND MAY NOT PROVIDE THE PERFORMANCE AND FUEL I got t boned by someone who turned left right in to me. We only Put its compact size, it is capable of high rates of flow. speed, set the Idle mixture screw to lean best idle setting. By having 2 mixture screws you are delivering fuel from 2 places in the intake manifold. Set the Idle SPEED to approx 900-1000 RPM..Make sure multiple carbs are synchronizedTurn the mixture screws in until the idle starts to stumble and get roughOn a sidedraft with 2 screws do them each a little at a time.Then back them out until the best idle quality is acheived. If the mixture screw is more than 11/2 turns out turns then the Idle jet is too lean (too small). infinite tunabilty by way of interchangeable calibrated parts allows it to This is a little more tricky but not too badBasically you can tune just about any car in the world with an F8 or an F9 idle jet. Offering relative low Not sure why you'd buy a knockoff when you can get a genuine Weber for $220. until it lightly seats. PDF WEBER CARBURETOR TROUBLESHOOTING GUIDE - Revoracing Even with it running rich it was an big improvement over the 32/36 that was jetted as good as I could get it. Also I've seen jet kits online on ebay for these for around 55.00. achieved by using the 38 DGAS 38 DGES synchronous-opening model. Jeep is being scraped, it shattered my t case, snapped the back axle, both rear leaf springs, and one front. I'm happy to hear that things are working out for you. That is why everything is tunable. So in shortGet the carbs synched right FIRST. Weber 38 Jets, Timing And Wideband O2! - Slant Six Forum Check and set idle to your driving preference. If you are having a problem with how the engine runsPoor idle quality, stalling, etc then this is the first thing to do. Just my obs ,have run a 38 dgas for awhile and after a bit of a strugle got it set up on a 2.1 with a standard head and cam worked well reasonable mpg and performance I would guesstimate 115 to120 bhp over winter I had the head modified ,ported, chambers equalised ,3 angle seats with std valves reshaped ,bronze valve guides with a Newman fast . Also check the speed screw Its not your fault. while the linkage is cycled (linkage operated through its full movement ) i read somewhere on another thread it could possibly be the accelerator pump. any insight on that? Because that jet affects so much of the 0-3500rpm range, it's very important to get right. BMW 2002-320i M10 engine single sidedraft dcoe conversion kits. Throttle response is great, and responds well whenever I want to open it up. JavaScript seems to be disabled in your browser. Bolt pattern is slotted 2 inch inside of bolts ,3 inch outside of bolts FORCE OR BIND AS THIS WILL CAUSE DAMAGE TO THE SCREW AND ITS SEAT IN A lack of spark or weak spark will make it impossible to tune the carbs properly or to their maximum potential. 428 New Universal Carburetor Type Weber 38x38 2 Barrel Fiat Renault Ford VW 4CYL | eBay, https://www.youtube.com/watch?v=tPzRPga6uDg. Check and set idle to your driving preference. out the screw (recommend turning at a time). A 4 cylinder 2.0 with a 32/36 is only going to make about 120-125 HP max so don't expect miracles.) A forum community dedicated to Opel GT owners and enthusiasts. ( YES there are exceptions to this and I am well aware of them so don't send me nasty e-mails saying that your Mini only runs on F6 idles. Its ran rich since I got the jeep so after everything else I'm assuming its jetting now. I had a similar situation on a weber a few years back. drivability, increased fuel economy and improved performance. RememberA Weber carb is always a performance upgrade and is designed to deliver more fuel and air and make more HP then the stock carb did. Genuine Weber manufacturing facility, we use the very latest production Idle RPM recommended by Redline was 800. To get a good understanding of this I cannot recommend too highly to get the Weber Factory Tuning manual and really understand what each component does. in. mine originally had 45's in it and would idle horribly and have lots of black smoke. Start with the screw or screws out 1.5 turns.Start the car and let it warm up. JavaScript is disabled. 32/36: f7 emulsion tubes, 140 to 145 primary jets, 185 air correctors, 50 accel. It is fast and accurate and will take alot of the guesswork out of it. Weber 38 still running rich | Jeep Enthusiast Forums There are alot of theories about setting idle mixture adjustment on a Weber carb to determine Rich or Lean jetting.A Weber will run correctly with the mixture screws from 1/2 turn to 3 turns outThe late style DCOE carbs with the extra Air Bleed Screws on the top take 2.5 to 3 turns to operate correctlySo you cannot say that because it is 1/2 turn out that you need smaller jets.You need to find what is right for that particular engineAn engine with a strong vacuum signal will draw more fuel in with less turns of the screw than an engine with a weak vacuum signal willThis is the kind of thing that throws the "certain number of turns" theory out the window.. without any assistance. The mixture screew is very easy to set whether it be a downdraft, sidedraft or multiple sidedrafts. You may have opened THE BODY OF CARBURETOR. turn of base line setting then all is well. Carbs, Conversions, Jets, Parts, Tools and Rebuilding Services. To me that means you're probably going to have to tweak jets and probably idle air corrector jets to get your stumble smoothed out. The IDF is ideal for use on most opposed-cylinder engines, or on Here's what I'm running right now: x2 Rich so much easier to tune with a vacuum gauge and plug reading. 5.0 out of 5 stars Running rich. be tailored to suit many engine applications. Poor running does not always mean a bad or poorly adjusted carburetor. Weber 38DGAS help! Enjoy banner ad-free browsing with Opel GT Forum Plus. The Idle only needs to be 650 to 800 RPM with light load or AC on. While that seems to be a tragedy, we should look on the brightest side. Actually, I believe it is a copy of a Weber 38 DGAS carb. The engine idles great and drives pretty decent except for hesitation on take off. can be used as a high performance alternative to most any DGV applications, YouTube Video Weber You can have a 50F8 and a 50F9 and both have the same amount of fuel but the 50F9 has a richer MIXTURE (Less Air to the same volume of fuel.) As a result, we cannot show you the price in the catalog or the product page. Reducing the main jet and main air corrector will lean the entry point a bit but should maintain the overall air / fuel ratio. Stud holes 6.5mm spacing 44mm The 38 dgas sure makes a difference on the 2.0L and up.. and go on a test drive. bottom out and note if the engine dies. Currently running an up-jetted 34Pict3 that is . turns out turns then the Idle jet is too lean (too small). POOR RUNNING DOES NOT ALWAYS MEAN A BAD OR Know what is in your carb NOW. will be sensitive and should only take turn to achieve the idle speed I am not going to explain everything about these carbs. An advantage of a Weber carburetor is its ease of adjustment and tuning. You have to take it step by step in order to understand the results of each incremental change, or it can be very frustrating. Older DCOE 2, 19, 18 Etc. If all is still best and smoothest idle Rules for low speed calibration. Weber 38DGAS help! | The H.A.M.B. - The Jalopy Journal It's rich at part throttle. Set the mixture screws by turning each screw in does nothing or runs worse then turn back to the point where it ran its Back out 1/4 turn more, or until the screw does nothing or runs worse then turn back to the point where it ran its best. Do not depend on the existing settings. Heads, Normally Aspirated Std BBC Open Chamber Dome, SBC 350 - Flat Top, 2.020/1.600 valve milled head, SBC 350 Flat top X Style Forgings - 2.020/ 1.600 valve Milled Head, SBC 350 Flat top X Style Forgings - Heavy Duty, SBC 360 Sprint X Style Forgings - Dome, Brodix ASCS Head, Super Series Piston - BBC Dome 540, 555 & 565 Open Chamber, Blown Alcohol Chrysler 4.375 Hemi (Drag Race), Blown Alcohol Chrysler 4.467 Hemi (Drag Race), Duratec 2.0L Non variable valve timing (no valve reliefs), SBF Windsler N head LIGHT WT. PROPER SEQUENCE, DEVIATION WILL CAUSE THE CARBURETOR TO NOT FUNCTION TO Genuine Weber Redline Mercruiser and Volvo Penta Marine kits, PMO Carb and FI Conversion kits for Porsche 6 cylinder 911, PMO 3 Barrel Throttle Bodies and Kits for 911. I am in Houston so basically sea level. Drive the car above 2000-3000 RPM for a few minutes then shut the engine off before letting it idle then check the plugs. not gona need it much longer going fI. Shipping Policy. Fred - I read your post- thanks- very helpfull. Simple (turned in) the speed screw. Weber DGSA 38, Part 2-B Assembly - Operation - Adjustments Achieving the best idle at less than 1/2 turn indicates the need for a smaller idle jet. Even tuned, the Weber is still running rich, and I have black carbon building up in my exhaust. Price: $576.07 $399.95. Interchangeable I had fouling due to a coil not giving enough spark! EASE OF ADJUSTMENT AND TUNING. hey mark, i actually had a notion today and i had thought about that possibility, wonder what to do with the 38 to fix it hmmm. Cycle by Johann65 Wed 02 Nov 2016, 15:34, Post Sep 5, 2010 jaminb said: i thought if you were running rich you wanted to get larger idle jets? ITS IDEAL SPECIFICATIONS AND MAY NOT PROVIDE THE PERFORMANCE AND FUEL I guess my question is are the main jets on this dges 38 the same as the idle jets ? Recheck mixture screw to lean best idle again. The cam you have, if you mean the X4254H, which is 68-235-4 in their catalog. (Made in Spain), With a Grand Prix Racing heritage, the venerable DCOE Weber Carburetor 38 Outlaw Jet Pack Kit DGES, DGAS, DGMS, 701-DGS. in. kits and parts, Greater Start set up by confirming carb base line settings. you are not close enough. For a better experience, please enable JavaScript in your browser before proceeding. search for the ideal 2-barrel, progressive down-draft carburetor would Weber 38 running rich - African Muscle Cars - Forum Ideally you want the ceramic part of the plug a nice Dark Tan to medium Brown color with a . That said this is the real Cliff Notes version of tuning the power circuit of these carbs. ), DCOE Series and IDF / IDA. Tuning the Weber takes a bit of time, but the fact that the Weber has a lot of adjustments makes it very tunable to your specific application. It is fast and accurate and will take alot of the guesswork out of it. ECONOMY AS DESIGNED. Initial timing setting increase of a couple degrees can give you some benefit on the low end, as will bringing in advance curve at a lower RPM (one lighter spring on weights). cost for performance gained, the IDF is hard to beat. This is not an Air Screw. Custom Jetting and Tuning of Weber Carbs. But thank you for the confirmation on here as well! First, turn in the mixture screw until the engine dies or runs worse, then back out the screw (recommend turning 14 at a time). (They should be Stamped Made in Spain) so as not to prematurely expose the transition holes. and note how many total turns from initial contact. important at this point. Recheck mixture A DGV, DFV, DGES mix the air internally in the carb and do not have these air bleed holes in the idle jet. A good place to start for most cars with Webers on pump gas is 12-14 Degrees advance at 1000 RPM idle and 36 Degrees total advance by 3000 RPMThis is not cast in stone and you need to make sure your car does not Detonate at these setting. Total timing 36-38 degrees, but probably never got there anyway just because of RPM required. V8 Chevy IDF and IDA Kits. get at me if your interested. If the settings are other than described then you This is especially true of old British cars and cars that have point type igntion systems. closes to the Idle Speed Screw. Do not mess with them. Idle jet. Thank you. Reset the screws (back in) to the best final settings (Per your notes) To get a good understanding of this I cannot recommend too highly to get the Weber Factory Tuning manual and really understand what each component does. I am not going to explain everything about these carbs. I'm running 170 mains on my 38 with timing 8base, 30mech, 46total. Which is the right Weber is for me???? - REDLINE CARBURETOR /viewtopic.php?f=1&t=73925&p=574647#p574647, http://www.redlineweber.com/html/Tech/3 unning.htm. So the idle jets would be??? warmed up so that the choke is fully opened and disengaged. installed without binding and the linkage opens to full throttle and This is done by following the rule of thumb BELOW. Hey y'all, looking for some answers here. the stop lever; and the best idle occurring with the idle mixture screw Before you blame the carb make sure you have the Fuel delivery right and the Spark Timing. Toyota***Canvas Maintenance***OEM Soft Tops, Toyota OEM FST(Factory Soft Top) fj4X Owner Pictures, Toyota AK-10 "Predecessor (grandfather) of all Land Cruisers", Toyota "BJ" Jeep Thread (Father of all Land Cruisers). Small Block and Big Block Chevy, Genuine Made in Spain Weber Carbs by themselves NOT IN KITS, Carb Repair Kits and Weber Carb Rebuilding Services, 32/36 CUSTOM TAILORED for your Engine Re-Jetting Packages, Weber Carb Tuning and Technical Info. Welcome to the Top-End Performance Weber Carb Site.Everything for Weber Carbs. 4.7 out of 5 stars . Weber Carburetor 38 outlaw jet pack jet kit - amazon.com Weber 38 dges running rich | Jeep Enthusiast Forums ), HONDA 1992-96 PRELUDE & 1997-01 PRELUDE H23A - (Must sleeve block. Performance Engine Components. The timing is roughly 10 degrees. This is the book to have if you really want to know how a Weber carb works and what all the pieces do. Could be wrong.. but figured id try. location, you can adjust the Idle speed the screw. Dont set it too mine originally had 45's in it and would idle horribly and have lots of black smoke. Designed for it's completely different than edelbrock/carter/holley. Hey Bro, I'm running a 38/38 on my 250 with stock cam, big K&N cold air intake filter, and Aussie 2V with oversized valves. IMPORTANT TECHNICAL ARTICLE.Jetting and Tuning Weber Carbs. i was doing a little test drive today, up to a certain RPM. Power valve-6-1/2 pop-off. Reviewed in the United States on May 14, 2021. Reset the screws (back in) to the best final settings (Per your notes) and go on a test drive. I have finished with my engine build "1989 258", and it's stumbling at partial throttle. See more about the 32/36 or 38 choice. The plugs are fouling after -+ 50km of normal driving, tips burnt pitch black. If you have a flat spot or hesitation when you first take off then it is likely that the idle circuit is too lean. * Always start with a fresh set of Spark Plugs. If your car is still not running properly or you feel that you should have more power (Be realistic about that. A properly jetted carburetor, that worked well a couple of years ago, may have lost some of its performance due to today's leaner fuels. * Set the TimingGenerally speaking you need a little more advance with a Weber than with the stock carb. Platinum Sport 1000 Terminated Engine Harness ECU Kits, Elite 1500 Terminated Engine Harness ECU Kits, Elite 2500 Terminated Engine Harness ECU Kits, Platinum Sport 1000 Plug n Play Adaptor Harness Kits, Platinum Sport 2000 Plug n Play Adaptor Harness Kits, Elite 2500 Plug n Play Adaptor Harness Kits, Elite 2000 Terminated Engine Harness ECU Kits, Elite 1000 Terminated Engine Harness ECU Kits, Elite Terminated Engine Harness Options and Upgrades, RACEPAK DASHES, DATA & POWER CONTROL MODULES, POWER CONTROL MODULE CABLES AND ACCESSORIES. Pulled out the idle jets today and they are 45's. performance . If you know you have the idle circuit right then the primary main jet is too small. The pump jets are also not a problem. The idle quality will be mostly unaffected, so that's not a good indicator. i thought if you were running rich you wanted to get larger idle jets? Please understand the need to keep throttle plate as near to closed as possible so as not to prematurely expose the transition holes. Jetting and Tuning Downdraft and Sidedraft Weber Carbs. Weber 38/38 DGS tuning help | FordSix Performance Forum Weber 38 running rich by Rossouw Tue 01 Nov 2016, 15:43 Hi, I have a weber 38 on a skyline 2.8 gtx engine. BACK IN STOCK AGAIN ! 32/36 Weber Guinuine Weber ID. Recheck timing and vacuum hook ups. Ive got 70 idle jets and they are only 3/4 turn out so thats within spec, but it is still running rich under load ( kicks black smoke out the tail pipe when i get into it.). Your setup might like some more timing, depending on where you have it on base timing. WEBER CARBURETOR TROUBLESHOOTING GUIDE This guide is to help pinpoint problems by diagnosing engine symptoms associated with specific vehicle operating conditions. i think you could use a different adapter plate or maybe even yours. diaphragm type accelerator pump circuits, separate starting circuits and You are using an out of date browser. 1. VerticalScope Inc., 111 Peter Street, Suite 600, Toronto, Ontario, M5V 2H1, Canada. It is unsurpassed for full-race use, yet its Use this form to write it in so you know what you have. warmed up so that the. You likely have the wrong emulsion tubes. EXAMPLE With Put the car in gear and apply slight load, (AC on) and set the Idle as you like it. by screwing in the mixture screw and count the number of turns it takes to And there might be a PCV issue with regard to the breather port some 38DGES carbs had. This is a high performance alternative to most any DGV applications. EagleServer WebSite Design 2023, Greater Lamborghini 6 Weber conversion and distributorless ignition V8 Ford and Chevy 48 IDA and IDF Kits. This video is all about the assembly , rebuild and an explanation of all circuits and their operation including the adjustments. Also check the speed screw If you know you have the idle circuit right then the primary main jet is too small. Keep checking the plugs after driving it for a few minutes (Do not let it idle when checking the spark plug color for the main jets. Example: With the idle speed screw set at no more than 1/2 turn in after contact with the stop lever; and the best idle occurring with the idle mixture screw set at 1 1/2 turns from lightly seating, indicates the need for a larger Idle jet. I pulled the carb off and actually sold it to someone around me in michigan, and they are on the forum as well. Our commitment to providing the best parts at the best prices is topped only by our dedication to providing the very best service to our clients. BMW, Nissan/ Datsun, Fiat / ALFA, others. This can be the cause of richness. I'm not so sure with my setup I NEED a 38DGAS.. but for $165 it was worth it to see if this 38DGAS clone was worth it or not. Okay.This is going to be the Short Course in what you need to know to Tune and Jet your Weber Carbs successfullyThis also applies to Mikuni, Solex, Etc.This is not specific info about specific cars or giving you magic jetting numbers. IDF Series has been and continues to be the winning choice for a When you purchase through links on our site, we may earn an affiliate commission, which supports our community. This is a guideline only to get you started or to make sure you are not totally out of range making it very difficult to tune. If all is still best and smoothest idle -------------------------------------------------------, Business Hours: Mon-Fri. 9:30am - 4:30pm Pacific Time. i want to adjust the mixture, its running very rich, and the idle adjustment on the carb side. When I accelerate the vacuum drops below 6.5 and the power valve opens, messing up the mixture.
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