weber 38 dgas running rich

weber 38 dgas running rich

I found them on a parts break down diagram I downloaded shortly after our posts. Im assuming the main jets are the ones in the float bowl? My only real piece of advice is to be VERY methodical, eliminate all the basics, like float setting, vacuum leaks, vac/centrifugal timing advance curve, before throwing jets into the carb. First, The Fora platform includes forum software by XenForo. So not clean themStart fresh. #1 So, this is not a which carb is better thread. VerticalScope Inc., 111 Peter Street, Suite 600, Toronto, Ontario, M5V 2H1, Canada. The mixture screw lets in an ALREADY MIXED volume of Fuel and Air to the engine. ), HONDA 1992-96 PRELUDE & 1997-01 PRELUDE H23A - (Must sleeve block. The engine idles great and drives pretty decent except for hesitation on take off. The difficulty in tuning these types of cars is that there are many combinations that work well depending on the engine and the state of tune. Do not ignore this step. JET KITS are available if needed. Badly designed or Worn linkage is the #1 cause of problems with Multiple carb systems. BE SURE TO FOLLOW THE NEXT INSTRUCTIONS IN THE So the idle jets would be??? (You will hear a metallic click as the choke cam is released. I have finished with my engine build "1989 258", and it's stumbling at partial throttle. 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. That felt high to me, so I ran mine at 750 most of the time. Achieving the best idle at less than 1/2 turn indicates the need for a smaller idle jet. The idle speed screw If Idle Mixture screws are with in 12 turn of base line setting then all is well. by Johann65 Wed 02 Nov 2016, 15:34, Post It is an F10. Reviewed in the United States on May 14, 2021. Put If you get the Venturis wrong you will never get it running right. $21.95 ORDER NOW. Changed plugs at proper gaps. causes the visible rich condition, and confirms the need to increase the I guess my question is are the main jets on this dges 38 the same as the idle jets ? I contacted Reline Weber and they helped with jet size and I purchased a rejet kit from them (about 60 bucks). You want to tune the engine by sound. 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 . Check and set idle to your driving preference. 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. Our price is lower than the manufacturer's "minimum advertised price." If the settings are other than described then you may want to recalibrate the Idle circuit (low speed circuit) to your engines needs. 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. Reset the screws (back in) to the best final settings (Per your notes) and go on a test drive. i was doing a little test drive today, up to a certain RPM. Weber 38DGAS help! EagleServer WebSite Design 2023, Greater i thought if you were running rich you wanted to get larger idle jets? it tops out and doesnt stop accelerating, but there is sudden power loss. Adjust to best, fastest use factory Weber equipment to ensure each carburetor is working Air-180. carburetors are measured. NOTE: On the latest modern Spanish Weber 40 DCOE 151 and 45 DCOE 152 START with the Idle Mixture Screws at. it's completely different than edelbrock/carter/holley. Start the engine, the engine will run very slowly tailored to small engine setups to (Fiat cars ,generators) Do not mess with them. On a DCOE or multiple DCOE's you should be between 3/4 turn and 1.5 turns out for all older model DCOE's (DCOE 2, 9, 18, etc.) When the mixture screw is 12 turn or less, then the Idle jet is too rich (too large). Use your ear, not a scope or tuning instruments at this point. engines needs. This is done by following the rule of thumb below. Poor running does not always mean a bad or poorly adjusted carburetor. Know what is in your carb NOW. the valve timing was all set as well. They work. until it lightly seats. closes to the Idle Speed Screw. If it does then the carbs are too large or you have another problemA 40 DCOE can use as small as a 28mm choke tube but chances are the performance will not be good with anything smaller than a 30mm choke.I have found that a correctly sized 40 DCOE application should always stat with a 30mm choke and do up to a 34mm max.Bigger or smaller than that and you probably have either the wrong size carbs or another problem that is causing you to tune outside of this rangeThis same info applies to IDF carbs as well A great reference book for rebuilding, tuning, etc. 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. Price: $576.07 $399.95. location, you can adjust the Idle speed the screw. (Other uses include forklifts , snowmobiles and generators) titled it to help others in the future searching for this material.. i dont know what to do with the weber. about the DCOE. an adapter, the IDF will replace the Solex 40 PII carburetors used on many Youll probably save $$ if you shop around. Thats kind of been my experience.. thats why I started the thread saying "I wouldn't endorse this carb" even if it runs good for me. 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. If the mixture screw is more than 11/2 The first thing, do not set up the idle Could be wrong.. but figured id try. Can't wait!:veryhappy. There are many of you running cars successfully with choke sizes outside this range so don't e-mail me about it. Hopefully you guys answer his questions if/when they come up just as well as you answered mine. 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.. assembly to confirm that it is not in contact with the choke fast idle A forum community dedicated to Opel GT owners and enthusiasts. Seeking opinions - Air fuel ratios with 32/36 Weber DGV carbs ( 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. In before the mixture screws? ITS IDEAL SPECIFICATIONS AND MAY NOT PROVIDE THE PERFORMANCE AND FUEL For a better experience, please enable JavaScript in your browser before proceeding. Weber 38 throttle and choke linkage. You did do all that other boring stuff didn't you ? ) i think you could use a different adapter plate or maybe even yours. ), 1988-95 CIVIC DX / LX, HB DX / CRX-DX D15B2 / B7, 1992-95 CIVIC EX/Si, 1993-95 DEL SOL D16Z6, 1993-97 DEL SOL, 1999-00 CIVIC Si B16A1 / A2 / A3, 2009+ Laborghini Gallardo V10 / Audi R8 V10, 1988-92 ECLIPSE / TALON / EVO 4G63 21MM PIN (6 bolt), 2001-2007 EVOLUTION VII-IX / 4G63 22MM PIN, SENTRA/200SX SE-R, SILVIA, 180SX & BLUEBIRD SR20DET, OPEL ASTRA, CORSA, TIGRA, VECTRA 1.6L GSI 16V X16EX/X16EXL, OPEL ASTRA, CALIBRA, KADETT, VECTRA GSI 2.0L 16V C20XE / C20LE / C20LET, BRZ FA20 / TOYOTA FRS 4U-GSE / TOYOTA GT-86 4U-GSE 2012+, 2004+ IMPREZA STI , 2005+ FORESTER XT, LEGACY GT, 2006+ WRX EJ255 / EJ257, FRS 4U-GSE / TOYOTA GT-86 4U-GSE / SUBARU BRZ FA20 2012+, 1992-99 VR6 12V GTI / JETTA GLX / PASSAT AAA, B20 or Sleeved B18 Block w/B16A or B18C Head, 18D Dome 400 Chevy - 1.5 x 1.5 x 3.0mm ring set, 18D Dome 400 Chevy - 1/16 x 1/16 x 3/16 in. Recheck timing and vacuum hook ups. If you know you have the idle circuit right then the primary main jet is too small. Turbos, Wastegates, BOV's, Electronics and Engine Management Systems, Weber Carbs and TWM / Borla EFi Induction, EXHAUST HEADERS. OkaySo now your car should idle correctly, the carbs are synched, the timing is set, everything is good.Time to get the main circuit right. Buyer pays return shipping. 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. speed, set the Idle mixture screw to lean best idle setting. 2. Which model Weber? That said this is the real Cliff Notes version of tuning the power circuit of these carbs. more like a tractor. You have 2 mixture screws and they will not be set the same on most cars. If the carbs are not hooked together in a fashion that has no slop and allows minute adjustment between the carbs you are always going to have problems. It is fast and accurate and will take alot of the guesswork out of it. You have to remember that most Weber conversions have been around for many years and have been installed on hundreds of cars and trucks. mine originally had 45's in it and would idle horribly and have lots of black smoke. If you do not have enough advance you will have this problem and it will have nothing to do with the carb tuning. This is because the plenum type manifold that they are on distributes fuel unevenly. Stud holes 6.5mm spacing 44mm Lamborghini 6 Weber conversion and distributorless ignition V8 Ford and Chevy 48 IDA and IDF Kits. kits and parts, It is unsurpassed for full-race use, yet its @ this time my car and engine are no where near running. Another good option is to install a Halmeter AF30 Air Fuel Ratio Gauge to help you with tuning. JET KITS are available if needed. /viewtopic.php?f=1&t=73925&p=574647#p574647, http://www.redlineweber.com/html/Tech/3 unning.htm. Weber 38 throttle and choke linkage | Jeep Enthusiast Forums Also check the speed screw and note how many total turns from initial contact. As I may just get lucky. .9L > 2L short block, 45 & 36mm valves, ported head, Isky OR-66 hyd cam, heavily ported 73 intake welded & tented , Weber 38 dges, pertronix ignition , and flame thrower coil, aluminum flywheel with S-10 clutch, 4 speed trans . 38 Dgas Carb - Engine - RHOCAR - The UK Kit Car Club Log In | My Account/Reorder. and go on a test drive. Step-6: OkayNow that you have everything else sorted out ( Right ? I've had the privilege of testing idle jets ranging from 45 to 65 with an on-board wide-band air/fuel monitor just for my own knowledge. The pump jets are also not a problem. You are using an out of date browser. Put a hole in the oil pan, and smashed in the front driver side fender, and ruined the whole left side of the tub. i concur -- for a new carb installation the jet selection process is very specific, peculiar to the Weber design. Supertech Valve Train. Weber tuning is notoriously tricky when you've got a performance cam. You're right about the 45's. They're a little too small and you end up pulling fuel from the progression holes rather than the idle circuit. Which is the right Weber is for me???? - REDLINE (Made in Spain), IF you find it Cheaper We will try to Beat The chart will guide you step by step to help correct these problems. The mixture screew is very easy to set whether it be a downdraft, sidedraft or multiple sidedrafts. Discussion in ' The Hokey Ass Message Board ' started by Brady, May 11, 2012 . Lots and lots of people have the same issues with these carbs, and so did I. 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. It was running fine until I had it overhauled and tuned. 4-6 cyl engines, the DGV Series carbs feature diaphragm type If the settings are other than described then you I'm happy to hear that things are working out for you. Come join the discussion about restorations, engine swaps, modifications, classifieds, troubleshooting, maintenance, and more! The engine should pick up It's easily does nothing or runs worse then turn back to the point where it ran its . Help with Weber 38 DGES on 4.2 with 4.0 head - Jeep Enthusiast Forums Returning Customer? 6. Genuine Weber manufacturing facility, we use the very latest production THE BODY OF CARBURETOR. New Weber 38 38 stumbling - The AMC Forum Also seems to be running a little rich. screw to lean best idle again. BMW 2002-320i M10 engine single sidedraft dcoe conversion kits. The IDF is ideal for use on most opposed-cylinder engines, or on look no further for versatility, wide Drive the car above 2000-3000 RPM for a few minutes then shut the engine off before letting it idle then check the plugs. This is the factory tuning manual with all the calibrated parts specifications, circuit diagrams, etc. it's slightly tedious but worth the effort. electric choke Jet installation and minimize final tuning adjustments. Also check the speed screw important at this point. Jet 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. Use the engine size and HP rating to estimate what you need for your car or engine if it is not listed. Poor idle quality and "sticky high idle" problems are the most common symptom of this. 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. 2. warmed up so that the choke is fully opened and disengaged. This is a particularly valuable tool for cars that get track use so that you make sure you do not lean out and put a hole in a piston DCOE, IDF or IDA: Here we go.This is the real tricky part. This is the factory tuning manual with all the calibrated parts specifications, circuit diagrams, etc. infinite tune ability by way of interchangeable calibrated parts allows it BACK IN STOCK AGAIN ! This is the book to have if you really want to know how a Weber carb works and what all the pieces do. in. More people have given up on Dual and Triple carb systems because of linkage than any other problems combined. I got t boned by someone who turned left right in to me. DCNF is a synchronous-opening, 2-barrel, down-draft carburetor, Despite warmed up so that the. If you get any detonation then you need to back off the timing Step-2: If you have a single carb you can skip this stepIf you have multiple carbs then the 1st thing you need to do is make sure the carbs are Synchronized properly using a Correct Synch tool. Increase the main jet size 2 steps at a time. Set the mixture screws by turning each screw in The IDA carbs have no Air Bleed Hole but do have an F number to identify this feature. 1980 cj5 401, t-176, p/s., YJ p/b, tfi/hei hybrid, 3.73 30/44. then confirm and note the final settings. A carbureted man in a fuel injected world. closes to the Idle Speed Screw. (Made in Spain), With a Grand Prix Racing heritage, the venerable DCOE Please understand the need to keep throttle plate as near to closed as possible so as not to prematurely expose the transition holes. then it is time to jet and tune the carb(s) You need to establish if you are running lean or rich. This is done by following the rule of thumb BELOW. This Site Designed By JavaScript is disabled. (Made in Spain), ** DFEV = DFAV with I have a weber 38 on my 90 258. The Mixture screw closest to the engine will no doubt need to be in much farther than the outer mixture screw. Keeping using the search function - pick 2 to 5 keywords, and read, read, read. See more about the 32/36 or 38 choice. The 38 dgas sure makes a difference on the 2.0L and up.. 1 step in idle jet size can make a HUGE differerence. SPECIALSBMW 2002 and E21 Rear Brace and Battery Relocation kits are on specialClick Here for E21 Click Here for 2002ITEMS BACK IN STOCKBMW M54 ARP Head Studs are Back In Stock..Click HereMitsubishi 2.6 ARP Head studs are Back In StockClick HereELECTROMOTIVE Crank Sensors1/2" Mag IN STOCK 3/8" Mag 1/2" Hall Effect in 3-4 weeksClick Here. capabilities, compact alloy body and wide variety of available sizes, the surely end with the DGV Series. It involves more than just Jetting the carbs and in fact that step is the easiest.Following these steps and rules will also make it much easier when you are purchasing jets for your carbThis applies to a single 2 Barrel Downdraft 32/36 Carb or a set of Triple DCOE carbs or even a set of 4 Downdrafts on a V8 engine.The 2 books listed at the bottom of this page are invaluable tools for learning all the basics of your carbs and the various metered tuning pieces that are used in them. (Checking for linkage bind) Now bring screw back into contact with the lever and The DGV also has a power valve circuit to facilitate low vacuum running conditions. * Set the TimingGenerally speaking you need a little more advance with a Weber than with the stock carb. Enjoy banner ad-free browsing with Opel GT Forum Plus. Performance Jet Kit. condition usually requiring greater change. It's rich at part throttle. Thank you.. but quick question.. where are the main jets on this and idle jets? 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. Thank you so much. I just ordered mine from Carb Unlimited. It is well worth the small investement in money and time to buy and read these books to help you better understand the carbs you spent all that money on. Opel GT Source may need to talk to their distributor about pricing. WEBER CARBURETOR TROUBLESHOOTING GUIDE This guide is to help pinpoint problems by diagnosing engine symptoms associated with specific vehicle operating conditions. Also check the speed screw Do not mess with them. You've got a pretty aggressive cam, so you may need the bigger 38/38. Do not depend on the existing settings. Back out 1/4 turn more, or until the screw Do not go up or down more than 1 step at a time when tuning the idle circuit. ball bearing throttle shafts. without any assistance. As part of our special relationship with Weber, we 4.7 out of 5 stars . the stop lever; and the best idle occurring with the idle mixture screw All settings are done with choke disengaged or JavaScript is disabled. I see this is an old thread, but was in search of what sized jets to use in my weber dges 38? I see above i should go with 55's in the earlier replies. If this carb is considered. Simple This is particulary true of new installations where you just purchased and installed a conversion kit and you are having problems. Start the engine, the engine will run very slowly more like a tractor. I also have a bunch of similar stuff for the 38/38 carbs. Now that the mixture screw is at its best running Drive the car above 2000-3000 RPM for a few minutes then shut the engine off before letting it idle then check the plugs. Otherwise you're opening the throttle plate too much and start drawing fuel in from the transition slot. Weber 38/38 DGS tuning help | FordSix Performance Forum Could be wrong.. but figured id try. The number of turns out on the idle mixture screw is going to tell you whether you're at the right idle jet size, for the most part. Very light blue to whitish color it running too lean. The likelyhood of having a defective carb out of the box is about like being hit by lightning. This is a very simple operationThe car should idle well and small adjustments leaner (Turning them in) should make the idle drop off. Historically I have run as much as 18 degrees with the HEI setup and it ran fine. It's easily Clockwise is Leaner and Counter-Clockwise is Richer. Well mainly because I was under the impression they were over $350 :sigh: Supplier does have a 30 day money back policy. turn in the mixture screw until the engine dies or runs worse, then back This is a high performance alternative to most any DGV applications. Jump to Latest Follow 1 - 20 of 24 Posts. The 50 refers to the .5mm fuel hole and the F8 Refers to the Air Bleed hole in the side. Throttle response is great, and responds well whenever I want to open it up. Porsches. Use your ear, not a scope or tuning instruments at http://www.jeepforum.com/forum/showthread.php?t=631105. White plugs are lean and Black plugs are Rich. If the car then transitions fine but hesitates or falls on it face when the secondary is opened you need to work on the Secondary main jet. A good option to playing around with your 32/36 Weber jetting is to just get one of our Custom Performance Jetting Kits.We offer these for all Single 32/36 DGV and DGEV applications operating from Sea Level to approx 4000 FtAbove 4000 Ft you start having more altitude problems and the vehicle needs to be tuned as outlined here. diaphragm type accelerator pump circuits, separate starting circuits and cam.). IDF Series has been and continues to be the winning choice for a Do not rely on a list on a website or a book that says what your carb might have come with. GENUINE WEBER 38/38 DGES CARBURETOR - amazon.com I'm on my third set of plugs. This is especially true of all multiple carb installations. Was going to order one but just wanted to be sure. Quote Reply Topic: New Weber 38 38 stumbling Posted: Jan/28/2016 at 4:22pm . Top End Performance has been your source for the best prices on brand name, top quality car parts since 1984. Are you sure they're 70's? Its features include: ball bearing throttle shafts, piston I see thats to lean in previous posts so I should start with 50's due to the 45's are causing it to pull fuel elsewhere making it run rich from what I read.

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