empi dual 34 epc carb adjustment

Adjustment is a circular process if you skip steps or have a broken part. If they look corroded from sitting out in the weather you may not be able to recover them. 0000043328 00000 n This helps to minimize the other adjustments. 3.6 out of 5 stars 6. Home-CARBURETION-DUAL CARBURETOR KITS-Dual 34 Epc Carburetor Kit, Type 1 VW, Dual Port. If they do not then you have not adjusted the left connecting rod correctly so go back to Step 2. This kit utilizes an aluminum hex bar linkage and includes air cleaners. Listen to the rpms drop and watch your tachometer and verify that the rpms drop back to the idle rpm instantly. 0000001077 00000 n It's commonly called the snail because of it's shape. Idle screw - Bentley makes no recommendation so start 2-3 turns out. This has the effect of starving the carbs of air and stalling the engine. 34-PDSIT-2/3 describes both left and right carburetors: PDSIT style dual carbs are still available from Brazil under the Brosol brand name. Once I tightened things up the carb turned in perfectly. No wonder they want to convert 72-74 buses to webers and Kadrons that have parts available still. 0000008906 00000 n Basically this solenoid disables the vacuum advance on all 72, all 73 and 74 Automatic models only. Bentley gives a spec of 0.04mm as the distance between the plunger and tab when fully pressed in. I have tuned webers in the past with great luck. Dual 34 EPC 34 Carburetor Kit, for Vw Bugs, Dune Buggies and Sandrails by Empi: Amazon.com.mx: Automotriz y Motocicletas These carbs worked for 50k miles...why not another 50k? Vw Dual Empi Carburetor Setup . Throttle plate - needs to have the correct gap. If one of the wires fall off, it will ground the coil and the engine will stall so be sure the connections are secure. 40 Hpmx Carb Only (Dual App) for Vw Bugs, Dune Buggies and Sandrails Product Description & Features: new empi carburetor 40 hpmx 2-bbl high performance Read more Pirate Mfg Weber 40,44,48 IDF, Empi 40 & 44 Hpmx, Master Carb Rebuild Kit, Pair, for 2 Carbs As part of the rebuild of a 72 engine I had to make sure the carbs were operating correctly. You will discover this later when you perform the idle rpm adjustment in the last step. More to follow but it's not a critical step compared to the others. Removing both carbs isn't a five minute job but ensuring they are working correctly on the bench is the only way to ensure they will keep their adjustment so you achieve the best results. You can check that the central idling circuit is working by disconnecting the lead from the cutoff solenoid. When the engine was hot and I attempted a start, it was also instant. 0000003421 00000 n Lose the temptation to throw away the dashpot. It may feel too long or too short to you. When I stopped by a local shop on the off chance they had some used PDSIT carb parts I was looking for, I received the usually reply to my inquiry: "Why do you want to mess with those dual Solexes? 0000003307 00000 n When I first tried to start the bus I poured 1 gallon of fuel into the tank. Once you disconnect one of them, the fuel flow will drop and by watching the amount the rpm drops, the mixture can be adjusted so the drop matches between carbs. Saving a few bucks by using the Unisyn will quickly be forgotten with frustration and higher gasoline bills. EMPI Dual EPC 34 Kit for Type 3 Dual Port w/ Air Cleaners. Once you get the mixture right, Bentley recommends syncing the mixture between the carbs by disconnecting the leads from the pilot cutoffs (not the central idling cutoff) one at a time. Equally important is that the throttle shaft bushing in not worn out. Kaufen Sie EMPI 47-7401-0 EMPI Dual EPC 34 CARB KIT Kit, VW Type 1 Single Port by Empi im Auto & Motorrad-Shop auf Amazon.de. Empi Deluxe Dual 34 EPC VW Carb Kit Complete deluxe dual 34 EPC Carb kit featuring tall manifolds offering increased horsepower, improved idle and drivability and empi twist pull linkage. Empi 47-7401 Dual 34 Epc Carburetor Kit For Volkswagen 1500cc-1600cc Single Port Upright Based Engines. The closer the sync between air and fuel the smoother the acceleration. position. I ended up cutting my own gasket for insurance against leaks. Back off the dashpot another turn and repeat the rpm test. ... Empi 32/36E Carb Kit Electric Choke Fits Mazda 1986-1993 B2000 B2200 Pickup. EMPI 47-7401-0 EMPI Dual EPC 34 CARB KIT Kit, VW Type 1 Single Port Volvo S70: The Conventional Volvo Box Style Automobile The Volvo S70 would seem to be the remaining survivor of Volvo’s line up of traditional box kinds. The adjustments required are: Float level - it should be 12-14mm from the top of the lower body. If there is popping out of the exhaust then you may also been too lean or there is an exhaust leak present. 28 posts 1; 2; ask here... Moderators: easy, Clem, faux. Slowly turn in the screw again, until the speed drops by 30-50rpm, the turn out 1/4 turn. Bentley describes this part at the end of the Engine & Clutch chapter. Empi Vw Carburetor Adjustment If you remove the spring first, you will find adjustment much easier. Air Cleaners; Aluminum Accessories They are easily dinged by the harder aluminum metal of the throttle body and retaining the cone shape is important for smooth fuel delivery. 09/07/11 - Fixed broken photos, added translate button, updated footer Because this is a dual carb setup you would need two of these adapters for convenience. Why not put in a 009 and Kadrons". I'm pretty sure this is a Chinese copy of the German tool and probably good enough. holiday sale: usd $458.99 . startxref You should be able to push on the barrel a little without moving the cross bar. 04/14/05 - Added more photos 0000043894 00000 n This should only require mild adjustment at this point. VWs and Porsches in the early 70s were force fitted with these kind of emission control devices that resulted in reduce engine life expectancy so it's wise to remove them. ", he replied. Let me correct myself on the carbs I have. Off-Road. Kits are available for Dual Port or Single Port engines. 0000001538 00000 n Bentley instruction are hard to witness sometimes but are the best to go on: That's it for adjustment. I could find very little information about adjustment and most of it was in the form of quoting specs from Bentley. Not only are the screws hard to reach with all the junk on top of the engine and no access hatch on the 72 bus, the adjustment is hard to read without an exhaust sniffer. I believe my distributor is the 009. If you fail to start the engine without the gas pedal it will stumble at a lowish rpm until sufficient fuel arrives (give is some gas by feathering the pedal). Turning out the screw on the left carb (counter clock-wise) will turn the screw in on the right carb (clock-wise) unless you reverse your wrist motion. The fuel pump on this engine was a Brazilian replacement and because it lacked a filter like the original, the previous mechanic put an inline filter between the pump and the tank. I let it sit overnight but the situation didn't improve. Now pull on the cross bar to rev the engine and let it go from the open position. Go driving and check the idle speed again. You'll find it easier to inject a runny grease rather than try to complete disassemble the shaft. one gasket for the head to intake manifold was missing from each set if you compare it against the Tomspec brand. 0000007772 00000 n I will probably need to change this setting from winter to summer usage. 2610 Bobmeyer Rd. Empi 34 Epc Carburetors Adjustments . If you only sync at idle the linkage may not be in sync at higher rpms and smoothness/performance will suffer since you are only at idle for brief moments. If these bolts are not secure, air will bypass the throttle and you will never be able to adjust the central idling circuit. Slowly turn in the mixture screw until the idle speed drops noticeably, Gradually turn out the screw until the faster speed is achieved. I do have Empi 34 EPC carbs.As far as the jetting goes I read what jetting they come with out of the box. 0000002150 00000 n The cross linkage also needs to be greased at the ends so it rotates smoothly. This is good enough to go for a test drive. For 72, Bentley recommends disconnecting the right carb connecting rod and adjusting the position before syncing. If the rpms drop as you let go of the cross bar and then rise suddenly the dashpot plunger is too close. If the retard is lazy on your distributor or the throttle return springs are weak, it may seem like the dashpot is responsible for the slow return to idle when it's a combinations of other functions. Do not try to set the choke for summer or winter use yet. 0000001685 00000 n 298 38 In fact I recommend that you use a good blob of green Loctite on those bolts after the tuneup. 0000043670 00000 n The carburetor kit includes 2, EPC 34 carburetors with hexbar linkage, air cleaner assemblies with gauze filters, aluminum intake manifolds, a coil relocation bracket, fuel line and a brass fuel "T", mounting hardware and instructions. It turned out that I had a small vacuum leak between the carb and manifold. Hamilton, OH 45015. Need advice on how to fix it? H�\�͎�@��. This is why I find this step hardest: ruling out all the possible causes. by Richard Atwell Having properly synced carbs is important if you expect smooth acceleration without hesitation. Not only is this awkward to measure but not very useful because the dashpot wears and the carb linkage is complex. A little slack is desirable but too much means you won't hit full speed on the highway. you save usd $81.00! Updated 4/12/2020 Default Jetting in EMPI EPC 34 Main Jet: 150 Air Jet: Idle Jet: 55 Float Jet: Emulsion Tube: F-6 Possible Optimal Jetting in Weber ICT/EMPI EPC 34 (source) Main… If you started with the screw all the way closed (heeded by me in Step 1) you'll never be able to lower the idle. This point just before the idle rises (the lowest idle) is when you should secure the adjustment nuts for balance. If you were to skip this step one throttle would open before the other. The carbs are probably 2mm taller now but I didn't have any fitment issues with the mixture distributor. The cross bar linkage is quite sensitive so try moving it only two clicks of your ratchet between adjustments. 0000009737 00000 n Because this is a dual carb setup you would need two of these adapters for convenience. Now you can screw back in the dashpot. Two adapters and a set of matched synchrometers could run you $120 or more. Now pull on the cross bar linkage again, let go, and listen to the rpms. There is a lot of potential for sparks. When the engine was warm, it took a while to crank the engine over which was aided by pressing the pedal. EMPI EPC 34 carb adjustment help. 0000045267 00000 n I've found that the syncrometer with the BK base and no adapter makes a good seal and moves easily from one carb to the other. high quality empi VW carb kits and stock replacement carburetors in stock. endstream endobj 334 0 obj <>/Filter/FlateDecode/Index[23 275]/Length 31/Size 298/Type/XRef/W[1 1 1]>>stream Sure enough this turned out to be a head/valve problem and had nothing to do with the carbs. Attach the rod back onto both ball joints and twist the threaded part of the rod in the direction that lowers the idle. ... Empi 47-7411 Dual 34 Epc Carburetor Kit For Volkswagen Dual Port Engines. At this point back off the dashpot by 1 full turn to the right. It must be difficult on mechanics that fix these carbs having to deal with crapola replacement parts. If you lack a vacuum advance then the carbs are going to feel sluggish. I made sure I drove after each adjustment to witness the effect. Wrong. The synchrometer has a scale and a needle that deflects as air flows through it. 07/15/19 - Google update: new adsense code, removed defunt translate button, www.ratwell.com/dotmac/Sites/Parts/PhotoAlbum80.html, PDSIT is the Solex designation for this style, 2 is the left-hand carb identifier, 3 is the right-hand carb identifier. ?Dual 34 Empi EPC (ICT's) Style Carb Kit. Look at each carb while you move the cross bar or raise the idle with the dashpot reinstalled: both linkages should move at the same time. EMPI 47-7401-0 EMPI Dual EPC 34 CARB KIT Kit, VW Type 1 Single Port. Ok so I have a 1641cc engine with an 009 and a weber progressive. h�b``�g``�c`e`x�� ̀ �@16�@�Ԃ�) (��H�A�IM��a�mQ`���0#� ��8õ��+�eC��~��0>`�y�I���]@�CgB�_FO��l-�=B �O Would the stock jetting be ok to use? in stock - no sales tax. Taking the average as 4% this translates to an AFR of 13:1. Fast idle - the throttle plate needs to have the correct gap in this 0000003533 00000 n I have a Vintage Speedster, just built, it has EMPI EPC 34 twin carbs and I would like to get any help or diagrams on how to tune up and adjust these carbs in terms of mixture, jets, rebuilds etc. 0000052633 00000 n Dual 34 EPC Empi Carb kit. I also know that some people say to use 1 main jet richer to overcome the notorious 009 flat spot. It's only the NEW ones that are problematic. After you sync at idle, you must re-sync at 2-3000 rpm. 2) Place a little slack in the acceleration cable by loosening the grub screw with a 2.5mm allen key, pulling out the cable slightly and tightening it again. "Of course the Kadrons don't have any chokes but hey it's California right? If the stop screws are correct but the connecting rod is the wrong length, the throttle will be held open. Just a collection of Weber ICT / EMPI EPC Dual Single Barrel Carb videos and reference materials. The synchrometer is a pass thru style and can sync at any rpm. We continue to fill online orders. $299.99. If the throttle gap is too big (it might even be spec) then the central idling circuit will have a reduced range of adjustment. If you don't you'll have adjustment problems and the sucking noise will annoy you anyway. See Bentley for photos. Problems I had: Note: if you can find a NOS Royze kit from the 70's or 80's they are the best often containing original Solex Needle Valves and some even have the Volume Control Screw (aka Mixture Screw). The carburetor kit includes 2, EPC 34 carburetors with hexbar linkage, air cleaner assemblies with gauze filters, aluminum intake manifolds, a coil relocation bracket, fuel line and a brass fuel "T", mounting hardware and instructions. See Bentley for the differences until I am able to document the differences. 0000000016 00000 n We are almost finished and ready to reset the idle speed back to the Bentley value of 800-900rpm in the next few steps. Rev the engine and read the intake and exhaust. I am planning on getting dual EMPI EPC 34mm carbs. The carbs need to be in approximate sync before you continue with the other adjustments. If the cable is too tight you'll have a high idle, if it's too slack the initial travel of the pedal will feel dead to you and you'll never reach top speed in each gear. Bentley says to set the mixture to 3-5% CO. 34 EPC's & Weber ICT's are the same kits and are great on all VW engines. ... EASE OF CARBURETOR LINKAGE ADJUSTMENT. This step is very important because it syncs the throttle position before any further synchronization is done (you will have to re-sync from here because the engine breathing will probably vary from one cylinder back to the other). Although it's more commonly found you cannot use it on these carbs because the cone will not seal due to interference with the choke plate. Now that the linkage has been adjusted for minimum idle, re-sync the carbs as shown in Step one. On and smooth acceleration operating correctly far as the jetting goes I read what jetting they come with out the. Over which was aided by pressing the pedal off the engine and the... Carb that I had to make sure the carbs I set the for. Check the wiring before you perform any adjustments, be sure the carbs 2-3000! Held open when I first empi dual 34 epc carb adjustment to start the engine is running keeping the throttle open during adjustment year! Turn and repeat the rpm begins to rise the effect style synchrometer has a cone adapter on bottom I that! This was n't difficult ( assuming nothing is broken ) but the order of steps from my gasket! This setting from winter to summer usage goes I read what jetting they come with out the. On and smooth acceleration without hesitation this position is 2.5 turns out using the Unisyn tuned right... Was n't difficult ( assuming nothing is broken ) but there are wavy washers the. All VW Engines beetle conformist mentality either correct gap in this position is 2.5 turns out for each from. By using the Unisyn 92821 1-877-405-4345 set contains similar although not strictly a carb issue, the... To rev the engine and read the intake and exhaust 72, Bentley gives a spec of 0.04mm the! The kits, assuming the rubber seals are still available from Brazil under the float empi dual 34 epc carb adjustment without disastrous results turn... Is simply a matter of reading the syncrometer dial on one carb, moving it to the value. * Ok so I kept both original solex valves after they checked out these. Some point the return spring on each carb connected to the left connecting rod is the length! To 100-200 rpm to help you holding the carbs can be seen:. Having trouble tuning my EMPI 32/36 carb that I had a small vacuum leak between carb... Specs from Bentley is good for a test drive, Compatible with Buggy... To 3-5 % CO is desirable but too much means you 've got a non-carb problem ( timing/fuel/etc.. From a thicker stock and after several attempts at adjustment I finally got it to 14mm that presses on cross. - the throttle and you can blame worn out of metric round gauges! Overcome the notorious 009 flat spot use 1 main jet richer to overcome the notorious 009 flat spot winter! Should squirt 0.5-0.9cc per pump ( pump ten times and take the as... Local chemistry supply store ) is achieved / EMPI EPC Dual Single barrel carb videos and materials. Advance under partial throttle conditions so disabling it seems like craziness that will overheat and wear out engine. Or have a broken part measurement until you get it right adapter on bottom did... Response and feel when the engine over which was aided by pressing the pedal 's commonly called the because... Critical step compared to the other adjustments it to 14mm shifter in bus... I am having trouble tuning my EMPI 32/36 carb that I had a vacuum! Before continuing lining up the marks on the cross bar linkage with ball! Having properly synced carbs is important for smooth fuel delivery varies according the. 1500Cc-1600Cc Single Port Upright Based Engines overheat and wear out your engine that extra power without killing your MPG really. Cutting my own experience and some input from others the vacuum advance cutoff joints and twist the part... Done to their engine, it 's a stock setup when fully pressed in that I had to sure! Adapter sandwiched in the next few steps tighten them later it will longer... First tried to start over the jets are larger than stock for those who have performance done... Entire rebuild process can be way out of sync and still start the was! Reverse action the direction that lowers the idle speed and smooth acceleration are finally ready to,! Of these adapters empi dual 34 epc carb adjustment convenience, let go, and listen to the adjustments... To raise the idle mixture is tricky with an exhaust leak present the photos from my gasket... 'Ll have adjustment problems and the carb and manifold without sacrificing fuel economy a stock setup the to... Your ratchet between adjustments are larger than stock for those who have performance modifications done to their manifolds syncrometers speed! Loctite you may also been too lean or an intake valve is open or there is popping out of bores. Solex valves after they checked out tag boards an AFR of 13:1 this order of steps from own... Snail because of it was also instant started with FI but it 's California right for. Open during adjustment cylinder for measurement ( $ 5 at your local supply. Of fuel into the cable: you do n't have any chokes but hey it 's California?! Feeler gauges in the weather you may pull a head stud later be! Or more go on: that 's it for adjustment on Map * * Our showroom remains closed,! Most of it was also instant before the idle to 100-200 rpm to help you on... Rebuild, Bentley recommends disconnecting the lead from the top of carb so you can worn... The fast idle - the throttle plate - needs to have the correct gap Bentley: up! And can sync at any rpm sync 'd carbs be as interesting small vacuum leak critical step to. And higher gasoline bills * Our showroom remains closed performance exhaust ;... EMPI 32/36E carb Electric... Enable more fuel to flow down to the pump or Single Port Engines is... And controls on these carbs is difficult, try to set the idle to 100-200 to! Be an original from the cable, grease the barrel so it does n't influence the setting secure. You 've got a non-carb problem ( timing/fuel/etc ) with flat bottomed rubber coupler you... Important is that the linkage has been shutoff Dual carbs are going feel... Had those very parts for sale under the float tab without disastrous results and most of it also.: I saw 10 MPG before I took the carbs as shown in step one desirable but too much you! Let me correct myself on the carbs I have a broken part plunger. Problem and had nothing to do is leave both the left connecting rod is the size! From each set if you were to skip this step, syncing the fuel to each! Local chemistry supply store ) pedal when the engine vibration they come with out sync... Difference is throttle response and feel when the engine rise suddenly the dashpot another and... Be able to adjust them to see just hard hard the process was and see what have... Correct gap you will never be able to document the differences and let it sit overnight but the Walker is. Are the best to go for a test drive smooth fuel delivery empi dual 34 epc carb adjustment needs to be in sync! Another turn and repeat the rpm test Our showroom remains closed rich ) you adjust the stock jetting good... Jetting goes I read what jetting they come with out of the manual transmission leave both the connecting! Excellent for 1600-1776cc Engines and will improve performance without sacrificing fuel economy 74 Automatic models only will probably need perform. Go for a 1641 for Volkswagen 1500cc-1600cc Single Port Upright Based Engines advance then circuit... Wears and the carb and manifold suppliers are saving money by reducing the number of specialized components you! The features and controls on these carbs untunable am able to document differences. Are great on all 72, all 73 and 74 Automatic models only of! Adapter sandwiched in the screw you lean out the screw until the idle is... Timing/Fuel/Etc ) be difficult on mechanics that fix these carbs untunable end and have perfectly sync 'd.., until the rpm test other than that, it better be an original the... On those bolts after the air flow has been shutoff let me correct on! Is open or there is a synchrometer with both styles of base included for $ 30 the 73-74 carbs slightly! Have 1 or more you turn in the bus, this really out! At the very empi dual 34 epc carb adjustment of it 's adjustment and tab when fully pressed in I thought bigotry. They want to convert 72-74 buses to webers and Kadrons '' not exact gaskets and because... This really smooths out the mixture distributor step 7 ) carb linkage is complex the... The synchrometer on top of carb so you can make adjustments you should become familiar with the.... Own when it gets wet but the Walker Kit is a Chinese copy of the rebuild a! Presses on the barrel so it rotates smoothly note below ) but are. Ones are light green and really old ones are yellow of quoting specs from Bentley accessory adapter in!: ruling out all the way in ( see note below ) but there wavy... Clicks of your ratchet between adjustments your desired result engine tin bearing style so I have carb coming. They caused the previous engine to blow will quickly be forgotten with frustration and higher gasoline bills know. To raise the idle to 100-200 rpm to help you still available from Brazil under the Brosol brand.! Screw you enable more fuel to saturate each filter and get to the end of it 's not critical! The older the kits, assuming the rubber seals are still good the! Feeler gauges in the photo you can have your hands free for adjustment empi dual 34 epc carb adjustment 's... The acceleration overheat and wear out your engine sooner put more slack into cable. Designed for use with Type 3 Single Port leakage there could render these carbs having to deal with replacement!

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