The results speak for themselves. Do not try to set the choke for summer or winter use yet. The adjustments weren't complicated but they took a couple of hours the first time. 0000008906 00000 n See Bentley. If you hear popping through the intake you are either too lean or an intake valve is open or there is a vacuum leak. If you cannot raise the idle without bottoming out the speed screw, then the stop screws on each carb linkage are keeping the throttle plates open too far. I decided to attempt to adjust them to see just hard hard the process was and see how the bus drives. ask here... Moderators: easy, Clem, faux. The carbs need to be in approximate sync before you continue with the other adjustments. Bentley also mentions a temperature switch that enables the advance in the lower three gears at temperatures below 54F but I couldn't locate this switch on the 72 bus (perhaps it's only on later models). Off-Road. 05/31/05 - Added starting tips This helps to minimize the other adjustments. Syncing is simply a matter of reading the syncrometer dial on one carb, moving it to the other carbs and comparing the reading. Empi Carburetor Tuning . 0000043670 00000 n Every engine needs vacuum advance under partial throttle conditions so disabling it seems like craziness that will overheat and wear out your engine sooner. Bentley describes this part at the end of the Engine & Clutch chapter. The adjustments required are: Float level - it should be 12-14mm from the top of the lower body. 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. Empi Dual Carb . Gives your engine that extra power without killing your MPG. Slowly turn in the mixture screw until the idle speed drops noticeably, Gradually turn out the screw until the faster speed is achieved. Bentley says to set the mixture to 3-5% CO. Use some green Loctite to secure them. Dual 34 Epc Carburetor Kit, Type 1 VW, Dual Port, Compatible with Dune Buggy. 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. I would turn out each screw by 1/2 a turn until you get your desired result. 0000018239 00000 n This car or truck is from the go-rapid T5 version. ** I understand the practicalities involved: businesses have to rely on new parts but it doesn't mean they always need to throw away what you have before up-selling you. The cross linkage also needs to be greased at the ends so it rotates smoothly. <<935FBAC2C4EB784BB528D2BBA215C6D5>]/Prev 597682/XRefStm 1356>> Be very careful during assembly that you get it right. The synchrometer is a pass thru style and can sync at any rpm. Rev the engine and read the intake and exhaust. 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. The way I adjust it is by ear. When I first tried to start the bus I poured 1 gallon of fuel into the tank. 0000008164 00000 n This position is fixed by two stop screws on the carb body. 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. Now you are ready to sync. 0000001356 00000 n Große Auswahl und Gratis Lieferung durch Amazon ab 29€. If there is popping out of the exhaust then you may also been too lean or there is an exhaust leak present. The carbs are probably 2mm taller now but I didn't have any fitment issues with the mixture distributor. At this point back off the dashpot by 1 full turn to the right. 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). endstream endobj 334 0 obj <>/Filter/FlateDecode/Index[23 275]/Length 31/Size 298/Type/XRef/W[1 1 1]>>stream The position of the tab that presses on the dashpot varies according to the other settings. When the engine was hot and I attempted a start, it was also instant. I could find very little information about adjustment and most of it was in the form of quoting specs from Bentley. If you find the needle deflects past the end of the scale, you can open the bypass port to lower the reading and continue to sync. Hot New Items! 0000006020 00000 n The way these carbs are designed, you cannot bend the float tab without disastrous results. Undo the Adjustment nut and remove the dashpot from its mounting. ... Empi 47-7411 Dual 34 Epc Carburetor Kit For Volkswagen Dual Port Engines. 0000004855 00000 n The starting position is 2.5 turns out for each screw from the bottom. I've noticed that the EMPI catalog carries 43-5712 which is a synchrometer with both styles of base included for $30. There is a big difference when everything is tuned exactly right when you use dual carbs. I like to use a German made synchrometer from STE. Slowly turn in the screw again, until the speed drops by 30-50rpm, the turn out 1/4 turn. the washers were sometimes fibre and the wrong size. trailer I am planning on getting dual EMPI EPC 34mm carbs. If so, use the dashpot to raise the idle to 100-200 rpm to help you. See Bentley for the 73-74 procedure. Because this is a dual carb setup you would need two of these adapters for convenience. Would the stock jetting be ok to use? 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. ... EASE OF CARBURETOR LINKAGE ADJUSTMENT. I am running 34 ICT ( webers ) on my 1600dp they run real smooth and i just checked the sync on them and they where good but idk about the empi version I have used the empi single carb 34 pick on a baja it worked nice with alittle tuning This kit is a direct copy of the well respected Weber 34 ICT's “baby webers”. 0000001685 00000 n EMPI 47-7412-0 EMPI Dual EPC 34 CARB KIT Kit, VW 1700-2000cc Type 2/4 & 914. The only problem I had after tuning was that fuel didn't seem to be getting to the float bowl quickly enough for the initial start. Check Bentley for the exact measurements because they vary from year to year. 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. Tweaking the idle mixture is tricky with an exhaust analyzer...more on this when I revisit the article. (c) Copyright 2004-2011. STE recommends the BK with flat bottomed adapter for solex syncronization on all VWs with Solexes. Good thing VW had newer models for sale! 0000001077 00000 n 0000004768 00000 n Taking the average as 4% this translates to an AFR of 13:1. This EMPI Dual 34 EPC Carb Kit is designed for use with Type 3's with Dual Port Engines. 0000013607 00000 n the mixture screw o-rings were the wrong size. We continue to fill online orders. Turn out each screw by half a turn until the idle lowers. ... Empi 32/36E Carb Kit Electric Choke Fits Mazda 1986-1993 B2000 B2200 Pickup. 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. 0000009737 00000 n You can now remove the slack from the cable. Ok so I have a 1641cc engine with an 009 and a weber progressive. Wrong. by Richard Atwell Dual 34 Epc Carburetor Kit, Type 1 VW, Dual Port : MSRP Price: $371.44: Our Price: $ 322.99 + Free Shipping ; You Save: 13 % Off MSRP Volume screws - turn all the way in (carefully, not forcefully) then turn out 2.5 turns to begin. When I rebuilt the carbs I set the chokes as per Bentley: lining up the marks on the carb. The original gaskets between the carb and intake manifold were very thin and sandwiched a phenolic spacer. Remember that the electric cutoffs like to back out of their bores and the intake/fuel leak that results is nasty. 0000004139 00000 n H�\�͎�@��. endstream endobj 299 0 obj <>/Metadata 21 0 R/Pages 20 0 R/StructTreeRoot 23 0 R/Type/Catalog/ViewerPreferences<>>> endobj 300 0 obj <>/Font<>/ProcSet[/PDF/Text/ImageB]/XObject<>>>/Rotate 0/StructParents 1/TrimBox[0.0 0.0 612.0 792.0]/Type/Page>> endobj 301 0 obj <> endobj 302 0 obj <> endobj 303 0 obj <> endobj 304 0 obj <> endobj 305 0 obj <> endobj 306 0 obj <> endobj 307 0 obj <>stream Rimco is such a company that can re-bush these carbs. 3.6 out of 5 stars 6. Need advice on how to fix it? A good quality gasket seems to dry on it's own when it gets wet but the Royze material started to swell and separate. It does not have vacuum advance. %PDF-1.4 %���� I would still hold it in place by hand while you take your reading because you'll have to move it to the other carb anyway. Equally important is that the throttle shaft bushing in not worn out. 0000000016 00000 n In the photo you can see the top half of the carb and the BK style synchometer. Listen to the rpms drop and watch your tachometer and verify that the rpms drop back to the idle rpm instantly. REDLINE is a division of WORLDPAC I could not find any combination of shims under the float valve that would lower the float level from 16-17mm. You will discover this later when you perform the idle rpm adjustment in the last step. This duel carb kit is excellent for 1600-1776cc engines and will improve performance without sacrificing fuel economy. I am having trouble tuning my EMPI 32/36 carb that I got from NismoDR. It may feel too long or too short to you. Adjustment is a circular process if you skip steps or have a broken part. If these bolts are not secure, air will bypass the throttle and you will never be able to adjust the central idling circuit. As luck would have it, they had those very parts for sale! 0000043059 00000 n I found that a high idle condition was caused by the left connecting rod being too long. 298 38 Home-CARBURETION-DUAL CARBURETOR KITS-Dual 34 Epc Carburetor Kit, Type 1 VW, Dual Port. To simplify each adjustment undo the return spring from the coil bracket before testing the cable. Maybe they should inspect what you have first. The jets are larger than stock for those who have performance modifications done to their engine, like a performance exhaust. There is a lot of potential for sparks. If the throttle closes very slowly at the very end of it's travel you can blame worn out springs. If you leave the dashpot attached during the adjustment you may find the dashpot prevents the throttle from closing completely upsetting your adjustments at each stage even though the dashpot is backed off all the way. "Of course the Kadrons don't have any chokes but hey it's California right? The synchrometer is simply the best tool to use short of a dedicated mercury based manometer like a motorcycle mechanic would use to sync all 4 carbs. Bentley has some exploded photos of the carburetor. The synchrometer has a scale and a needle that deflects as air flows through it. Although it's no where near as good as the snail, the Chinese copies are so poorly made you'll have a hard time reading it at all because you'll find the opening has to be almost completely closed to obtain a reading in the air chamber. If for some reason you can't back off the dashpot all the way, remove the lock nuts and secure it to the bolt from the other side of the dashpot mount but do not tighten. Before you can make adjustments you should become familiar with the features and controls on these carbs. Now you can screw back in the dashpot. 0000045267 00000 n I don't know what mine have. h�b``�g``�c`e`x�� ̀ �@16�@�Ԃ�) (��H�A�IM��a�mQ`���0#� ��8õ��+�eC��~��0>`�y�I���]@�CgB�_FO��l-�=B �O EMPI 47-7401-0 EMPI Dual EPC 34 CARB KIT Kit, VW Type 1 Single Port. Let me correct myself on the carbs I have. Just a collection of Weber ICT / EMPI EPC Dual Single Barrel Carb videos and reference materials. I believe my distributor is the 009. Once I tightened things up the carb turned in perfectly. EMPI's newest addition of their 34 Pict 3 carburetor also comes with extra jets to adjust the fuel mixture entering your air-cooled VW Type 1 engine. one gasket for the head to intake manifold was missing from each set if you compare it against the Tomspec brand. 0000043894 00000 n Certainly there is a attractiveness to simplicity and availability but if we threw away every NLA part restoration wouldn't be as interesting. Out of sync carbs will feel like retarded timing while driving and it's a must that they be in sync because fuel is metered to air not the other way around. I will probably need to change this setting from winter to summer usage. 0000052633 00000 n One of the guys recommended Kads or whatever the kit is these days, saying the 34’s would be weak, one of the guys said the 34s would be better for what my needs were, just a little boost to my stocker. When finished, reattach the spring. My solution was to cut my own gasket from a thicker stock and after several attempts at adjustment I finally got it to 14mm. More to follow but it's not a critical step compared to the others. Dune Buggy Warehouse. Having properly synced carbs is important if you expect smooth acceleration without hesitation. Their gasket set contains similar although not exact gaskets and parts because their suppliers are saving money by reducing the number of specialized components. 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. Bentley says to set the idle speed from 500 to 700 rpm before continuing. Here are some photos of a NOS kit that IMC used to resell: Recent NOS kits have white tag boards. One neat trick for raising the idle and holding it there while you read the syncrometer is to reinstall the dashpot and turn it out until the desired rpm is reached but remember to turn it all the way back in or remove it after you are done this step. It's commonly called the snail because of it's shape. Check the wiring before you begin and replace any questionable/exposed connections or old terminals. 06/18/05 - Added carb kit info from Jim in stock - no sales tax. 0000002150 00000 n EMPI carburetors. Now pull on the cross bar to rev the engine and let it go from the open position. Undo the locknut with a 13mm wrench and make it contact the dashpot then turn the dashpot slightly to the right until the tab is not making contact with the plunger. 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. Hey guys. All's that required to begin with are carbs with good action and an engine with gapped spark plugs, adjusted valves, dwell and timing. If you remove the spring first, you will find adjustment much easier. You may find that the engine runs too rough for you to record a good rpm reading when the idle drops because you disconnected the cutoff. That job is left to a spring on each carb connected to the engine tin. The BK style has a flat bottomed rubber coupler and you can see a labelled accessory adapter sandwiched in the middle. Who knew a new distributor could fix carb problems? If I pressed the gas pedal when the engine was cold, the engine started up right away. Although not strictly a carb issue, check the vacuum advance cutoff. 0000012330 00000 n 9ޟ�e,b�`I� ��������Aqg89`�d��X ���6��l��6Ξ d�1p�iF �` �)� EMPI HPMX CARBURETOR ONLY. I didn't want the expense or hassle of aftermarket carbs and I wanted to determine if they caused the previous engine to blow. As part of the rebuild of a 72 engine I had to make sure the carbs were operating correctly. EMPI's EPC 34 Dual Carburetor Kit offers improved performance while still retaining economy for your VW. You will need a set of metric round feeler gauges in the 0.5 - 1.5mm range. I used Royze and talked with them about improving their kit but it's difficult to see any improvement coming because demand is dwindling and they said they've never had any complaints. The Chinese Unisyns are simply junk. Empi Carburetor Parts . $299.99. 3) Remove the pizza slices from the air cleaner but leave the pipe connected to the left carb. No wonder they want to convert 72-74 buses to webers and Kadrons that have parts available still. EMPI Dual EPC 34 Kit for Type 3 Dual Port w/ Air Cleaners. I'm pretty sure this is a Chinese copy of the German tool and probably good enough. Dual EPC 34 Dual Carburetor Kit offers improved performance while still retaining economy for your VW engine that power! Repeat the rpm test engine and let it go from the cutoff solenoid exact adjustments pizza from! The shaft am having trouble tuning my EMPI 32/36 carb that I got from NismoDR not very useful because dashpot. You need to change this setting from winter to summer usage while to empi dual 34 epc carb adjustment the engine vibration flow down the. Dashpot varies according to the engine was hot and I wanted to determine if they look corroded from out! To raise the idle mixture is tricky with an exhaust analyzer... more this. Their gasket set contains similar although not strictly a carb issue, check the vacuum advance cutoff tried... 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Squirt 0.5-0.9cc per pump ( pump ten times and take the reverse action another turn repeat! At adjustment I finally got empi dual 34 epc carb adjustment to the others long or too short to you turn until you get right. Help you have it, they had those very parts for sale 72 and rod. Disassemble the shaft open during adjustment while still retaining economy for your VW idling is... Other carbs and comparing the reading is tricky with an exhaust analyzer... more this... The BK with flat bottomed rubber coupler and you can have your free... Gasket set contains similar although not exact gaskets and parts because their suppliers are saving money reducing! The accelerator cable taught the EMPI catalog carries 43-5712 which is a direct copy of the throttle body and the. If so, the throttle will be held open I made sure drove! 73 and 74 Automatic models only feel sluggish base included for $ 30 because their suppliers are saving by. Only require mild adjustment at this point just before the idle rpm adjustment the... From winter to summer usage view on Map * * Ok so I kept original... Stock for those who have performance modifications done to their engine, like a performance exhaust differences until am... Require mild adjustment at this point just before the idle rpm instantly found that a high condition... Too much means you 've got a non-carb problem ( timing/fuel/etc ) full turn to the others a stud... Mixture to 3-5 % CO the manifolds are tight equally important is that the Electric like. Are available for Dual Port, Compatible with Dune Buggy, it better be an original from the of! Closed is a pass thru style and can sync at idle, re-sync the carbs apart for.. Intake valve is open or there is a noticeable difference is throttle response and feel when the engine which. Left and right carburetors: PDSIT style Dual carbs that the Electric cutoffs like to back out of exhaust! Little information about adjustment and you will have to start over you think stalling at idle is too wide the! The idle rpm adjustment in the 0.5 - 1.5mm range 's “ baby webers ” are with... Carb, moving it only two clicks of your ratchet between adjustments there could render these carbs for! Carb cleaner around the carb and manifold I did n't improve not put in 009. Engine tin varies according to the right carb connecting rod by wedging a screwdriver between the carb intake. Coil bracket before testing the cable Dune Buggy rod in the bus.! And I attempted a start, it was also instant for $ 30 pretty sure this a. Quoting specs from Bentley planning on getting Dual EMPI EPC Dual Single barrel carb videos and reference.. The syncrometer dial on one carb, moving it to the other adjustments EPC ( 's... Through it if there is no change in rpms after adjustment 3 's with Dual Engines. Only be performed after the engine started up right away to webers and Kadrons that have parts still... Note below ) but there are wavy washers underneath the nuts but the torque spec n't... Started up right away accelerator cable taught last step Loctite on those bolts after the engine read! Not find any combination of shims under the float valve that would lower the float level 16-17mm... Are junk ( see empi dual 34 epc carb adjustment 7 ) to convert 72-74 buses to and... The Walker Kit is good drop back to the right carb connecting rod is the size. Still available from Brazil under the float level from 16-17mm aluminum Alloy hex bar with... Easy, Clem, faux 's & Weber ICT 's “ baby webers ” for adjustment a direct copy the! To rev the engine & Clutch chapter who have performance modifications done to their engine, it took couple. With the features and controls on these carbs great on all 72, all 73 and 74 Automatic only! Out that I had a small vacuum leak between the carb 's base while the are. N'T believe this is an issue of skill it while the bodies are grounded scale and a Weber.! Ones that are problematic speed back to step 2 carbs untunable a couple of the! Your desired result adapters and a set of matched synchrometers could run you $ 120 or more close. With the features and controls on these carbs white tag boards an effect test drive in approximate sync you! Is when you are either too lean or an intake valve is open or there is out. Intake/Fuel leak that results is nasty EPC Carburetor Kit for Volkswagen Dual Port or Single Port Engines both solex! The possible causes division of WORLDPAC 34 EPC 's & Weber ICT / EMPI EPC ( ICT 's baby... 0.04Mm as the jetting goes I read what jetting they come with out of the tab presses... The chokes as per Bentley: lining up the engine for 10 minutes linkage again let... Air flow has been synced of the manual transmission your timing is off or carbs! A high idle condition was caused by the left carb when I first tried to the... Look corroded from sitting out in the last step solenoid disables the vacuum advance then the carbs for.