Weber 40 dcoe running rich. Trust us, it is worth every penny for DCOE owners.

Weber 40 dcoe running rich. Although the fuel bowl is not a "Circuit" in the Weber DCOE. I pulled the floats from the car and aligned them according to the parts bin float. I first checked the Timing and set it at 20 degrees. Jan 9, 2017 · Stockish l20b? 40 or 45's or 48's? Too rich will make it gurgle and fart and miss. HELP!!! NOTE: On the latest modern Spanish Weber 40 DCOE 151 and 45 DCOE 152 START with the Idle Mixture Screws at 3 Turns out from gently closed!!!! Older DCOE 2, 19, 18 Etc. Mar 11, 2019 · I am currently running a single WEBER 40 DCOE (TIPO 40DCOE 149, No 4). nearly 35* total advance above 3,000 rpm for clean running. So I downgraded both the cam shaft and the carb to a more standard Weber DGV 32/36 (in DE I need to get any Jun 30, 2020 · I am working on a S1 GT 1750 Veloce with 40 DCOE 151s. ) and 2 1/4 to 3 turns out for late style DCOES (151 and 152 with air bleed screws under the white caps. Apart from the active Accelerator Circuit, the remaining four circuits are passive and fuel is drawn from the fuel bowl through vacuum. May 2, 2020 · Folks, I have read and searched and tried to self help but I am stuck and need another set of eyes to zero in on what I am missing. Dec 9, 2007 · WEBER 40 DCOE Exploded View Parts List Fig Qty Description Code Fig Qty Description Code 1 1 Filter Cover 61002. On a DCOE or multiple DCOE's you should be between 3/4 turn and 1. On my 4. 5, 4. 002 M 50 1 Throttle Spindle Although the fuel bowl is not a "Circuit" in the Weber DCOE. Kit contains: 3 x Genuine Weber 40 DCOE carburettors Manifold and linkage set Weber Tuning manual Studs, nuts, softmounts etc Note: this kit has a standard jetting specification, this will require a rolling road setup. Tried lowering the float level, no difference, just makes the progression bad, have tried different levels from 5. May 20, 2023 · I have recently replaced the fuel injection on my 2. 1 - idle goes up to 1500rpm from time to time (suspect some fuel find its way at idle) 2 - after the last run (i have maybe 250 miles post rebuilt - we For this application 45 DCOE is the ideal solution, however a 40 DCOE will accommodate a 36mm choke, so if funds are limited and the engine is not going to be tuned further then 40 DCOEs will do the job. Here is the "general" rule of thumb. The engine should start to smooth out. I would suggest checking your base timing first. 0 depending on the various model DCOE and IDA carburetors. 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. Engine/exhuast is stock except for an upgraded high flow muffler. I bought a German synchrometer for balancing these 40 DCOE 151. 45DCOE’s Choke size 35 Main jets 140 Emulsion tubes F2 Air Correctors 180 Idle jets 60f9 Pump jets 40/45 Aux Venturis 5. mixture was very rich at 3000rpm Feb 11, 2008 · Re: Help! Weber 40DCOE throttle problems Update I would think the 45 DCOE could have even more tendancy to bogging on sudden acceleration. What I have done is purchased a dual set of SU HS4 carbs and sent them off to Joe Curto (sp) for rebuilding. Technical assistance is free for the first 60 days of purchase. Ignoring the affect of hills if you're cruising on the Main Circuit, then you're speeding in North America. Had to adjust nothing to run excellent, but after running the car 100 miles or so, fouled out the plugs. Feb 13, 2021 · A 3. will typically start at 1-1. Feb 3, 2015 · Ive got a 45 DCOE weber carb on a 1970 MGB. I replaced the worn dry bearings and seals and now there is no play in the spindle. Nov 27, 2005 · I'm running 40 DCOE's with 115 Main Jet, F11 emulsion tube, and 55f8 idle jet. 5 turns out on the screws with a better fuel level (shooting for 25mm below milled surface by nail method). 010 48 2 Vacuum Take-Off Cover 64590. Apr 15, 2024 · Good morning, i own a TR4 A that came with Webers. It was a screamer. Then I would pull out and check the spark plugs and see it if is running rich or lean. Pump exhaust jets in the bottom of each float bowl are normally 45 to 55, smaller race engines might like 60 or 70, bigger engines 45's. We're running 30mm chockes on the dellortos too, and get bogging down at idle and slow speed pulling away. Gulp. Feb 2, 2024 · I've been tuning my '72 L24 with Triple Weber DCOE 40's for some time. simply because it would allow more sudden air rush. If you have bought your Webers second-hand, it is important to understand that it is unlikely that they will be ‘ready jetted’. 1 lift (moderate) cams I am running 34mm chokes, 55F8 idle, F11 ET, 125 Main, 190 Air. 6L engine would be running the following as a base, not a lot of help for you, you don’t mention your choke size. Jun 19, 2004 · On my 40 DCOE set up, with 33 mm chokes, I was running 155 mains, and 190 or so aircorrector. However, you may have noticed that it runs rich at idle and may load up. Continue to back the screw out ¼ turn at a time until the screw does nothing or runs worse. My parts bin contained an unused brass float. Im just wondering if anyone has a good combination of jets for a fairly stock motor (60" overbore) that would be greatly appreciated. It sounds at the moment that at 11. 8 is now ready for the DCOE I have on the shelf. This is only my (and Webers) opinion from my 55+ years involved with Weber work. Sep 6, 2020 · Has anyone purchased new weber carburetors that are made in Spain. All factory spec. No clue if its a open chamber or closed chamber u67. However depending on various factors (both carb settings and engine) a high fuel level could cause the main circuit to engage to soon and generate very rich mixture during transistion. 1 compression and the head is ported with 11. Question is; how to I relate my engine mod For this application 45 DCOE is the ideal solution, however a 40 DCOE will accommodate a 36mm choke, so if funds are limited and the engine is not going to be tuned further then 40 DCOEs will do the job. The car came with 48 IDF carbs and - as I had to find out - a racing cam shaft with which no weber carb would run decently. Apr 16, 2016 · I got that straightened out, and now the car runs ok at about 1. The carbs came with the following: Choke 30 Secondary Venturi 4. and its big enough for me to run a larger displacement with the same carburetor Aug 24, 2020 · I have read several posts on Weber 40 DCOE jetting and have managed to answer most of my own questions, but I am still a little confused by the idle jet settings. F41's are emissions carb tubes, what model DCOE's do you have? What size idle jets, main jets, air correctors, and chokes are you using? Post a pic if you can. I clean it up with Sea Foam and it seems to correct the problem, but does not eliminate it. 5 with 292 built by Korman many years ago - was running pretty well on a weber 32/36 and Bavaria fuel pump when I swapped in a ignition May 21, 2023 · There is not a clear lean-to-rich logic regarding emulsion tubes, they were designed for various engines and running conditions. LOL. 024 M 49 2 Pump Jet Gasket 41535. Time taken in the setup will provide more fun later. Then turn it back in to the point where it ran best. Pump jets should be 35 for almost all Alfa engines. 2 XKE race car, I was running 165 mains and 55 idles. ) Idle jets and tuning the idle circuit: Very simple: the bigger the number the richer the jet. I was running 40 chokes Sep 22, 2008 · My request to any of you out there running DCOE's is to post your setup, that I may compare to my own to try to get the low speed end of the carbs correctly tuned. So, for most cars with a freeway cruise rpm of less than 4000 rpm, you're cruising on the Idle Circuit. See attached pics of plugs. These settings would provide a flexible engine with peak power at around 5,500 RPM. The 40 DCOE is suited to smaller capacity engines where the 45 is considered too large. Curently, 130 mains, 50 pump jet, 45f9 idle jet, 160 air corrector, f16 emulsion tube For this application 45 DCOE is the ideal solution, however a 40 DCOE will accommodate a 36mm choke, so if funds are limited and the engine is not going to be tuned further then 40 DCOEs will do the job. 5 Main jets 125 Air correction 160 Emulsion tube F7 Pump jet 40 Starter jet 65F5 Inlet/Exhaust valve (in bottom of well) 50 Nov 10, 2022 · Good afternoon all. Jun 19, 2020 · The Weber DCOE Idle Circuit feeds the engine up to 4000 rpm, then hands off to the Main Circuit. How far out is your air mix screws? We also need to know the model number because dcoe 9's have a different thread pitch on the mixture screws than a 152 Jul 16, 2003 · I have not had mine on the road yet (still finishing the suspension system) but I once had an Opel GT with a dual 40 Weber setup. Jul 22, 2017 · I just got my DCOE 40 tuned up and I did it myself. (the is no29 or 31mm) DCOE 48 chokes can be sized from 40mm 41mm and 42mm Jon the Chief Jun 19, 2020 · The Weber DCOE Idle Circuit feeds the engine up to 4000 rpm, then hands off to the Main Circuit. Right now I’m running 34mm chokes with 130 main jets . Jun 10, 2020 · I live at 5000 ft and the car came from CA where it was raced a bit so it was running pretty rich when I got it. 55F8 idle, 180 air correctors on a F16 E tube. the timing plays an important factor. I took the carbs of running car, bolted on and fired right up. The problem of bogging comes from the well known problem of steady state running going into a transient state of running. DCOE 45 chokes can be sized from 28 mm to 40mm in mostly 1mm increments. 174: 30mm venturi / choke 115 main jet F11 emulsion […] Weber 40 DCOE 151 Carburettor . 5mm. If you should need to call REDLINE WEBER for technical assistance we will need to know your final settings to help. Pump jets are 40 as well as the back bleed. Jul 8, 2024 · Hi folks. The reason for this is a trade off because without the correct mechanical advance certain concessions must be made. Stock jetting 19550. Now the issue is that if I set the car for strong acceleration with no ‘flat spots off the idle’ I get over rich mixture at cruising, for example at 120 km/hour. May 24, 2020 · My B came with a Weber 45 DCOE, and runs very rich (see example image of spark plug below; the oil issue is another thing I'm working on). Trust us, it is worth every penny for DCOE owners. I have been running the engine with the problem configuration since 2014 and it causes some carbon build up and then some dieseling. Dec 16, 2016 · Weber dcoe 45 , 152 jetting help! That setting group looks way to rich. You want to tune the engine by sound. 0, 3. As I am working on re-jetting my 38 DGAS, I realize that the majority of discussions are related to the Weber 32/36 DGV (DGAV & DGEV) version, and quite a few less on the 38 DGS (DGAS & DGEV and DPS100) carbs. Here's what I'm running at the moment. A 70's 12 cyl ferrari likely wouldn't be using DCOE 138/ Nov 18, 2021 · DCOE can be choked up to a maximum size or down to suite smaller engine DCOE 40 chokes can be sized from 24mm to 36mm in 1mm increments. e the float bottom is parallel with top's base) the fuel level is way higher than the schematic would suggest. I would decrease the main jet size from 135 to 130. Mechanical balance between TWO DCOE bodies without issues, on a running engine in decent condition, can be base-line set by visual plate positioning as discussed. However the car still seems to be running rich. REDLINE is a division of WORLDPAC Jul 22, 2021 · Weber 40 Proper Idle Jet? - posted in Problems, Questions and Technical: Mates, Got a 92 998 with a Weber DCOE 40 and FET intake. My hopped up 1. Apr 25, 2017 · In my case this involved the drilling of the forth progression hole, and the use of somehow rich idle jets, like 60F9 for example, and a lot of road testing. 28/32 ADHA; 28/36 DCD; 30 DICA; 32 ADFA; 32 DCOF; 32 DIR; 32/34 DFT; 32/36 DFEV,DFAV; 32/ Hence most people set the fuel level it as high as possible (25mm) as it really helps avoid the stubble effect triggered by lean running during transition. Apr 9, 2019 · I have been busy with trying to get my New 40 DCOE 151’s running right. Too lean will sorta do that too. The Weber Carburetor is a sequentially timed device to the motor like the distributor. I had the engine and the carbs rebuilt and everything runs as it should except 2 small issues. 0 Jan 5, 2012 · Retro Rides forum thread Weber 40 DCOE Carb best he could so I can get it running well enough to run in the engine at home. My 71 GT is now running great therefore I have to change something. What I would like to do is assemble a dual WEBER 40 DCOE system. As noted, even at 15 mm gap (i. May 15, 2008 · Those are the normal cause of rich running and poor mileage. It is common to all circuits and deserves special mention: Like most carbs, the Weber DCOE has a fuel bowl from which fuel is used for the five circuits. Used either in single or multiple carburettor applications, they are a popular choice for smaller 4 and 6 cylinder engines, particularly for road use. was too rich idle jets. This showed 130HP (wheels) on the dyno at KTR in Ayer MA. Imperial Hwy Brea, CA 92821 1-877-405-4345. After some thorough searching of the REDLINE 1225 W. The ones in use were only slightly off but a little tweak to the tabs made a huge difference. In this video we tune the weber DCOE carb, and more specific the idle and progression phase. Feb 5, 2013 · High speed running - Once the squirt of fuel from the accelerator pump is expended, the motor will be on the main running circuit. 5 turns out for all older model DCOE's (DCOE 2, 9, 18, etc. Apr 11, 2024 · I'm running a weber 45 dcoe on a l20b, basically stock engine as far as I can tell. 0, 4. Model 40 dcoe 151. The engine is 1870cc, 10. I'm not entirely unhappy with performance but it does run rich and I can't seem to lock down the problem. The Magical Mystical Weber DCOE: The Numbers: Tuning and Jetting: Do I Run a Single 45 or Dual 40's? Tuning and Service PDF (2 meg file size) Weber Resources on the Internet: User Photos and jettings Adjusting Twin DCOE's: The Fuel Flow Path: Physical Dimensions: Excellent Article by Mickey Luaria: Virtual Tour: Rasors Fuel Flow Pathes: The Nov 15, 2002 · We currently have over 500 threads and 7,200 posts in the "Aftermarket Down-draft carbs" Forum, with 1. Standard Jetting: • Venturi / Choke : 30 mm • Main jet: 115 • Emulsion tube: F11 • Air corrector jet: 200 • Pump exhaust valve: 50 • Idle jet: 45F9 • Pump jet: 40 Jan 14, 2019 · Here are my issues, I'm running Weber 40 DCOE's with air horns and a carb support bracket : 1) Car runs fairly well, and idles well at around 10k RPM with the following problems: 2) Running rich, lots of soot in exhaust, plugs black, but absolutely no smoke, crappy gas mileage May 8, 2006 · Here's the deal, any help is much appreciated. 5, 5. With the 45s it ran decent Sep 3, 2008 · There are alot of theories about setting idle mixture adjustment on a Weber carb to determine Rich or Lean jetting. . 9 MILLION (!!!) views to date. I'm not interested in swapping the carb out at the moment, but was wondering if I could get some advice on how to adjust the settings on the carb. 5mm down to 8. 5 Turns out. Stock 1977 L28 with the 3 dcoe 40's, zx distributor and ignition. The setup that your 40 DCOE came with, 45F9 primary, F9 emulsion tube, 115 main, 200 air corrector, will work well with your engine. The carburettor is fited with 39mm air horns . I have an Exmo Seven with the usual 2 ltr Pinto engine. And, at idle it runs great. 5mm (pretty much the standard from what I know) Floats set at 8mm and 15mm as per Weber manual Aug 13, 2024 · Hello all, hope you don't mind that I post here. The factory calibrations are; May 4, 2024 · On a decent engine, this is disregarded, but if it shows on a Weber DCOE body on a flow bench, you have an issue with that body, not the engine. 008 2 1 Filter Cover Gasket 41530. Previous owner ran F8 45 idle jets in winter from Nov to April, and F8 40s from May to Sept is seems but he wasnt 100% about the summer ones or if this combo was ideal. Mar 13, 2019 · So you have a nifty Weber DCOE or S K Racing side draft carb setup for your vehicle You re ready to chew gum and kick butt and you ve run out of gum × 1-800-946-2642 Home My Account Social / Forum Articles Contact My Cart Weber 40 DCNF; Weber 40 DCOE 151; Weber 40 IDF ; Weber 44 IDF; Weber 45 DCOE 9; Weber 45 DCOE 152; Weber 45 DCOE 152 G; Weber 48 DCO; Weber 48 IDA; Weber 48 IDF; Weber 50 DCO; Weber 55 DCO; ECON CARBURETORS; ECON CONVERSION KITS; CARBURETOR EXPLODED VIEW. If you have bought your Webers second-hand, it is important to understand that it is unlikely that they will be 'ready jetted'. The standard Weber DCOE schematic for the fuel during the normal power stage (see pic) would imply the fuel should come to point "A" on the attached picture of a tube. I have rechecked the float level, and fitted a filter king reducing the pressure to about 2. Sean is right though, you will not see 25 miles per gallon again! If memory serves me correctly, it was darn difficult to keep them from running rich at low rpm's. I know I need smaller main jets to help lean it out, but what about the others? It is running rich enough that I have raw fuel running out of the filter. The application is an Austin Healey 3000, but I think this is more a Weber question than a car-specific one, and I see quite a few more people using DCOE carbs on this forum than on the Austin Healey one. Oct 29, 2022 · After taking my 75 Spider with Weber conversion out of winter storage in May of this year, I found that she was running very riich - to the point that after even a half hour drive, a fine coating of black carbon mist was deposited on the rear paint work. 200 27 38 DCOE x2 250 27 28 30 38 DCOE x2 27 28 30 40 DCOE x2 300 27 29 31 40 DCOE x2 350 29 31 33 40 DCOE x2 400 30 33 36 40 DCOE x2 30 32 35 42 DCOE x2 450 32 34 36 40 DCOE x2 Secondary or Auxiliary Venturi Secondary venturies are supplied in the following sizes 3. It should make some differnce compared with the 40+ year old dizzy. Twin 40DCOE Weber Chokes 36mm Auxiliary Venturi 4. 021 M 3 1 Filter Element 37022. Here is my set up: - 1600 @ 9. 0 series. No running issues so I don't have to sort multiple changes. The standard set up for these carbs from the supplier. 0 pinto with two weber DCOE 40 12s. Using a lynx manifold, and it took some tuning but its been awesome so far. Apr 27, 2020 · I am currently running a single 40 DCOE WEBER and I am experiencing the problem Carter has described. If you have sidedraft DCOE carbs, track down a copy of Des Hammill's in-depth and sadly out-of-print How to Build & Power Tune Weber & Dellorto Carburettors (ISBN 978‑190370675‑6 / 781903‑706756). 5 to 3 turns to operate correctlySo you cannot say that because it Performance carburettor kit for the MGC 3. Its running horribly rich, and on tickover I can see fuel from one of the venturis dripping out. In part 2 we will address the acceleration and main venturi. Car is a '61 Austin Healey Dec 18, 2015 · Running F16 tubes, so tried F15's and then F2's, but then too lean heading up from 4000, and a bigger mainjet to counter that definitely makes the rich spot worse. This should get you in the ball park. I also have a new 123Tune USB coming from Germany. This will affect all RPM levels from 3500-7500 RPM. 5 AFR your are already on the rich side. Your choke size times 4 for a starting point on the main jet, and you main jet plus 40 for the air corrector. Adjust each mixture screw to the best, fastest and smoothest running point. As an aside, we've just fitted a new set of HT leads, as the old ones were a good 5 years On a DCOE or multiple DCOE's you should be between 3/4 turn and 1. May 14, 2020 · Weber 40 DCOE 27s with 120 mains, 35 accelerator jets, 50F11 idle jets. Mar 6, 2003 · A long time ago someone very knowledgeable about these things told me that the very easy way to check for a correct float level on DCOE carbs was to simply pull one of the emulsion tubes (which hold the air and gas jets) and see where the fuel level hit on the emulsion tube(s). If it stubles off idle, go up a size on the pump jet. 5 lbs PSI to no avail. Jun 20, 2020 · If you understand Weber function and the design purpose of the various DCOE (and other) Weber systems, you will understand why plugging the enriching passage, OR blocking the pistons from designed "bounce" is an extremely hazardous proposition. qso mxv jav wirvi nvkv jhoia ypc bneipwyt pqv xnq