A carburetor spacer can be an inexpensive bolt on part. I like the idea of plastic vs phenolic if nothing else because when you machine phenolic it makes a hell of a mess and you have to wear a respirator. 2" or 1" carb spacer ! - Don Terrill's Speed-Talk Most hot street engine I build like a one inch open spacer.. FWIW, all the OEM carb spacers/PCV/EGR spacers I ever saw were aluminum or cast iron. Carburetor Type: Carter AFB, Holley. Best combo of spacer and gaskets for Performer intake ... This results in a cooler, denser air/fuel induction . Spacers will be about .500" thick. Trans Dapt's Swirl-Torque Carburetor Spacers Improve ... Carburetor Spacers | O'Reilly Auto Parts I found this out the hard way when a Jeg's spacer warped on me cracking the baseplate of the carb. Carburetor Spacers. 10" and 14" professional cam degree wheels which are black anodized and degreed on both sides. Top quality phenolic carburetor spacers, carburetor adapters, and fuel pump insulators. Shop for professional quality carb spacer products online at JEGS High Performance. I like to stick with aluminum and use a carb gasket on either side. Phenolic vs Aluminum Carb Spacer - 429-460.com Use a 4 hole spacer for street & mild strip use, gives a better signal to the carb circuits, even with an open plenum. Carburetor Spacers. You may also want to think about phenolic spacers that help keep the carb cooler. Also will I need to change the throttle linkage from the stock setup to compensate. Carburetor Adapter. The aluminum adapter is being used because the intake primary bores are smaller than the primaries on the carb and the new carb has a different bolt pattern so the adapter is necessary. May 6, 2010 #2. A spacer can be used to move the torque and power-band where it is more usable in your application, or they can be used to help work out inefficiencies in your combination. They also act as insulators which keep engine heat away from your carburetor to ensure cooler incoming air and fuel. Also what size and four hole or open? Speedmaster Carburetor Spacers provide a smooth transition of fuel from the carburetor to the intake manifold, to increase flow for more performance. Anti Reversion Plate. Carburetors spacers can be a very useful tuning aid when working on your streetcar, or racecar. CHIP '70 hemicuda.street/strip ride, 9's N/A on pump gas at 3820# . What is being sold is an aluminum spacer, Not a bad spacer if you wanted a metal part but will not help much with heat soak. H.V.H. SUPER SUCKER CARB SPACER - Racingjunk Forums A carb spacer increases the distance between the intake manifold and the bottom of the carburetor, which reduces the velocity of the intake charge. Without a thermal barrier, heat builds up in the carburetor and will eventually cause the fuel inside to boil. Basically your adding plenum to the intake/runners and changing the signal to the carb. Spacers & Adapters - VDL Fuel Systems Edelbrock carb 500 cfm vs 600cfm. - Studebaker Drivers ... Rebel Machine Intake vs Stock 1970 390 4bbl Intake. I bought this spacer brand new and I put it on a flat piece of glass and sanded it untill it was truly flat. I have a wood spacer on the hemi and a phenolic spacer on the 440. Sometimes a spacer is correcting a poorly tuned carb. Carb Spacer | For Plymouth Road Runners Only Forums Search for a store page input 3. Carburetor Spacer is milled from super durable 6061 T6 aluminum billets and CNC machined. PowerNation TV teamed up with Summit Racing to provide you this quick tech tip on carburetor spacers. What is the purpose of a carb spacer? Carb Spacer ID | ClassicBroncos.com Forum Find Carburetor Spacers Phenolic wood Carburetor Spacer Material and get Free Shipping on Orders Over $99 at Summit Racing! I'm going to vote for both - with the shield under the spacer. Spacer Materials. Big block Chevy tall-deck intake manifold spacers, in phenolic or billet aluminum. if you were to put a . Well I received the exact spacer that I wanted only its aluminum. we provide an enormous selection that you simply can love. The Spectre Carburetor Spacer is a universal spacer/adapter that has been designed for Holley, Edelbrock or AFB carburetors. The 2696 is intended for Quadrajet and Thermo-Quad intakes, but since it has 4-holes, some people use it as an aluminum 4-hole spacer. phenolic spacers work well just don,t get the cheap plastic knock off versions that warp and leak, and be aware that the dual plane intakes tend to work best with the 1"and 2" four hole designs but single planes tend to work best with the larger single open plenum designs, the idea is to add plenum volume and change the abrupt angle changes in the air flow as it enters the runners Buy Hercules Carburetor. Carburetor spacers constructed from phenolic material to shield the carburetor from heat have been around for years, but Comp Cams recently introduced one of the most unique spacers designed to . . I used a foam brush to spread it all over the phenolic spacer, then "glued" one intake manifold gasket to each side. Use a 4 hole spacer for street & mild strip use, gives a better signal to the carb circuits, even with an open plenum. Learn more. The carburetor model determines what heat shield to use. I am looking to get a carb spacer for my motor. But the segment that really grabbed my attention was the four hole vs tapered carb spacers. Re: 2" or 1" carb spacer ! No other changes were made. Another option is found in Carter AVS carb rebuild kits that include a fiber spacer approx 3/8" thick with brass eyelets through the mounting holes for . Also all the components are aluminum, steel, and magnesium. Manufactured using high quality materials, the outer plate precision die cast aluminum with heat insulating phenolic material. Shop our big selection of Hercules Carburetor purchasable on-line. Aluminum is a great conductor of heat - as most stock computer heatsink/fan assemblies are made of finned aluminum in order to absorb the heat and then dissipate it through the cooling fins. Tapered four-hole spacers have specially contoured holes to increase air velocity under the carburetor. Since either of the 2731 and 2732 adapters are only 0.1" thick, it won't add any significant amount of height if you are worried about hood clearance. Holleys and Ford 4100s with front and back float bowls need a different shield. A short open spacer over a dual plane will speed up intake velocity and plenum balance. A phenolic carb spacer will help isolate the carb from engine heat and keep the fuel cooler. I've got two spacers to chose from.an Edelbrock phenolic, and an aluminum one which I have but don't remember where it came from. Available for nearly any carburetor and . However, a wood carburetor spacer is the least resistant to gasoline and chemicals. On my 406SB on the dyno it liked a open 1" spacer. I am about to buy one in hopes to lean out my air fuel a little. Plastic, or composite spacers are thermally efficient but are not as strong as phenolic (coming soon!) Wood is a poor conductor of heat and not very efficient. You are jumping into a snake pit here, know where you are going. APD 850 CFM 4150 Series Carb Package includes: 2 Circuit Billet Carb, Phenolic Spacer, Aluminum AN Fuel Fittings, Studs & Gaskets. These swervy, curvy, wavy, vortexy spacer's may just be doing some of what the open spacer does in a 4 hole configuration so you get some of both. Summit advertises a 1/2" 4-hole phenolic spacer, but I don't know who the supplier is. I was up half the night looking for carb tuning tips here on the site. Only show this user. I bought a used 3/4" thick phenolic Quadrajet 4 hole spacer on flea-bay. Or more scientifically put, the materials have varying thermal conductivity ratings, where a lower rating means better insulation. Carburetor Installation Kit. I'm not telling. Spacers and Tuning Carburetor Spacer #8713 4-Hole 2in Thick. Aluminum spacers offer little if any protection against heat soak. On the other hand, phenolic spacers are constructed from an advanced material similar to plastic that can reduce heat conductivity 10 times greater than aluminum for a much denser air/fuel charge. Big aluminum radiator and flowkooler water pump. If you do the same with a phenolic spacer you wont feel any heat soaking through. It also assists in preventing reversion from the pressure pulses. It soaks up liquid easily, causing the spacer to warp, become porous (causing vacuum leaks), and break down faster. I need to dial in the carb as well! I tested aluminum, wood and phenolic spacers after a thirty-minute street and highway run and a ten minute heat soak. Made from an advanced phenolic laminate, Jomar's Power Cone spacers prevent significantly less heat to the carburetor. I ordered the phenolic instead of aluminum primarily for its heat insulating properties. Items covered were things like standard heads vs CNC, 2.5 vs 3.0 inch exhaust, and early dual quads vs RPM air gap. Since putting them on, we haven't had anymore carburetor fuel percolation, vapor lock, or hard starting problems." "Thank You so much for giving us this peace of mind when driving our car!" Robert H. The insulation factor of raising the carb height is also part of the gain. I tried 1/2 open and 4 hole, 1" open and 4 hole. We have a huge selection of aluminum, phenolic and wood carburetor spacers for popular 4150 and 4500 Holley style, Quadrajet and Edelbrock carburetors. Skip to the beginning of the images gallery. Our collection of carburetor spacer and phenolic spacer parts provides a variety of affordable options that can help improve and enhance your air-to-fuel charge. Part no SUM-G1402 (yes, I have a stack of catalogs right next to my puter) I believe that Mr. Gasket also sells a stack of aluminum plates and gaskets that works similarly, and others have used that with good results. Product Type. Or, simply run a phenolic spacer under the carb. Carburetor bolts directly to the intake manifold. A standard 850 cfm Holly carburetor at full throttle position was placed on a special carburetor stand attached to a Superflow 1020 flow bench with a set pressure drop of 20.2" of water . CARB SPACER MATERIALS Carb spacers are generally made from wood, aluminum, phenolic resin, or polymer. Is there a benefit with goin with the 2 inch? There are many different types of material used to make carburetor spacers. Usually ,If an engine is in PREFECT tune with no spacer,with an open spacer, it will require two sizes bigger jets. Also, ALL spacers have the effect of making the engine think that the carburetor is larger than it actually is. Plywood spacers are easy to modify to suit a given manifold for optimum performance. look Hercules Carburetor now! Or how is it compared to the 1 inch? It's a tight race! Was only when going slow offroad. Cast Aluminum Plastic/Composite Spacers Adapter Spacers Open Carb Spacers Shear Plates 4-Hole Tapered Carb Spacers Throttle Bodies 4 Barrel . The material has a direct impact on the spacers' insulation ability, as they all transfer heat at a different rate. A 4 hole spacer just basically makes your carb barrels longer which typicaly will help low end response and power. If you use wood spacers, inspect them regularly and replace if necessary. The original engine in the race car was built by Muscle Motors.<br>They had complete control over the build.<br>What I told them was I wanted a 9.70's engine based on a 400 block.<br>The intake they used was the Indy 4150 style with the spacer going to a 4500 carb.<br>They said this would speed up the air and give a better air fuel distribution.<br>With this conbo the car went a best of 9.599 . AFR lightweight Phenolic carburetor spacers for 4150-style carbs are available in an 1" thick open or tapered four hole version. Air Scoop Tray Adapter Plate. Misleading and false advertising. Did the Rebel Machine use the 4 hole phenolic spacer with the PCV port between the carb and intake, like the other 390's? The aluminum, phenolic, or plastic spacer sheds heat, and keeps some away from the carb (vs. the same setup minus a spacer. Thickness (in): 2 Inch. I recently purchased an Edelbrock performer intake and I have the Edelbrock 1406 on order. Carburetor Heat Insulating Spacers and Bowl Shields "The carburetor insulating spacers and shields that we got from Hot Rod Carbs work great! Either one is better than an aluminum spacer when one wants to keep the fuel mixture at a lower temperature before it reaches the intake. The spacer might keep heat from conducting up to the carb, but the bowls are still going to have a ton of intake manifold heat rising up around them, which a heat shield can help to thwart. Material. I was wondering what you guys like to use the phenolic or aluminum spacers for your carbs? There is not much difference between a one inch and a two inch open spacer, A four hole spacer will run the same jets as no spacer at all. I make them out of good wood, but the phenolic or plastic work as well, and no fabrication is needed. A phenolic impregnated wood spacer has the excellent insulating property of wood while having the fuel resistance property of a phenolic at a lower cost than an all phenolic spacer. Open refers to the bottom design which can also include several 4 hole configurations that supposedly swirl and mix the fuel/air in different ways before it reaches the intake plenum. I have a basic 2 inch 4 hole phenolic carburetor spacer and it can not handle the heat my comonation puts off. Both versions will act as a heat barrier between the manifold and carburetor to keep the fuel in the float bowls cooler, as well as the actual carb body itself. Wood fiber laminate, black phenolic plastic and heat insulator gaskets provide great insulation. A small thing with a two barrel, but the aluminum will transfer engine heat to the carburetor. Select a store to see pricing & availability. Aluminum vs Wood vs Phenolic (Plastic) carb spacers.. Jump to Latest Follow 1 - 4 of 4 Posts . Generally taller carb spacers increase torque. 4,783. carb spacer or heat shield. Carburetor Spacers are the perfect addition to any vehicle where hood clearance isn't an issue. Here are a few tips when selecting a heat insulator spacer. Spacers are CNC-machined in the U.S. from a polymer compound able to withstand temperatures up to 400°F. There's also additional gaskets (which also shield off heat) and some guys run 2 or 3 gaskets under the plate to see even more of this. Ran .1 to .15 seconds slower with the slotted one compared to the stock F code manifold. Motor is a 305, mild cam, edelbrock performer intake, holley 650 carb. The phenolic will transfer a lot less heat. Spacers do have to be selected with this in mind. . $55.95. There is not any phenolic plastic anywhere in this kit. Iron heads to aluminum intake. Just remember when you change the signal to the carb. Hi all, I am replacing my current carburetor (autolite 2100 w/ manual choke) with an identical rebuilt carburetor (engine= stock 302). I was having intermittent problems with hot starts (among other things) and decided to go with a 1/4" phenolic spacer (felpro) in place of the current 1" spacer that is currently in place (vacuum port currently plugged) when I do the swap. Beware of JEG's/Summit brand "Phenolic" spacers, most are just plastic that is unstable at high temps and will warp. We have a huge selection of aluminum, phenolic and wood carburetor spacers for popular 4150 and 4500 Holley style, Quadrajet and Edelbrock carburetors. Edited by 304-dude - Jun/21/2021 at 9:12pm. 4500 Carb Spacer - 2.00" Tapered Lightweight (2.825" Bore) Regular price $247 View. Armada Engineering 1098, Scully Engineering Contractors, Inc. The host provides some dyno numbers Aug 29, 2000. 4 barrel carburetor to 4 barrel manifold with tapered bore, lightened $150; We do not have straight spacers in stock because "straight is straight" and this design is so readily available; however, we strongly recommend using a spacer that is billet aluminum as opposed to phenolic or plastic which can warp with heat and moisture. 4500 Carb Spacer - 2.00" Tapered Lightweight (2.250" Bore) . I have heard some instances of phenolic cracking over time, some in the boss 302 had this problem and had a run of aluminum spacers made. CARB SPACER MATERIALS Carb spacers are generally made from wood, aluminum, phenolic resin, or polymer. I am running a wieand stealth dual plane intake with a 650 speed demon. if the engine seam like it needs more intake volume and more signal you can use both . No resin spacer on the 1970 Machine. All were tested in great detail with some pretty eye popping results. Skip to the end of the images gallery. As far as open spacers or 4 hole spacers. If you want more warpage resistance for a hotter running engine that's running the stock breather, underhood insulation, or headers, then get a standard 650 vacuum secondary in brass without the inner coating Royce warned you about in the other thread. Obviously, aluminum spacers are still widely available. Scott. Image Close: $995: APD 950 CFM 4150 Series Carb Package includes: 2 Circuit Billet Carb, Phenolic Spacer, Aluminum AN Fuel Fittings, Studs & Gaskets. written by: Doug Schriefer of Braswell Carburetion. Last edited by Buick Runner; 03/31/08 01:10 AM . Sep 8, 2009. . Find Carburetor Spacers Phenolic wood Carburetor Spacer Material and get Free Shipping on Orders Over $99 at Summit Racing! Phenolic vs Aluminum Carb Spacer wickettoby1 January 24th 2019, 10:29 am So I ordered an HVH 1" phenolic carb spacer for a summer driven (maybe 2K a year) street car. I am going to get a ported one to help out with the low end. Note that these temperatures are before I fabricated and installed a phenolic spacer under the carburetor. Aug 29, 2000. Ive since added a 2" phenolic spacer, a heat shield made from .087 steel, dual electric fans, header wrap, a cold air carb hat and intake drawing from a sealed hood scoop, and an electric fan on the hood in front and above the carb drawing hot air out. Be the first to review this product. Do I need to install a spacer like the one on my 2v but specifically for the 4v? With all that being said I would use a Phenolic spacer for just the heat benefit. The phenolic materials used to make these carb spacers is a poor conductor of heat and acts as a thermal barrier, isolating the carburetor from the heat of the engine, keeping your fuel mixture cool and dense. It is 1 inch thick and comes with an open spacer insert and a 4 hole spacer insert to allow . A four-hole spacer helps to direct the air-fuel mixture, making the streams more efficient. Touch device users, explore by touch or with swipe gestures. AFBs have side bowls so the Mr, Gasket part GSP9 has now, is the choice. Wood, plastic,and aluminum, are the most common. What is the best carburetor spacer material to run on the street? The secondary holes are too small to match my 1904 Edelbrock 795 cfm QJet. Phenolic Resin has a thermal conductivity rating of 2.01. Safety Plate. Using both a direct reading thermocouple and an IR gun, fuel bowl temps were the the same for all three. Don't bother asking what I'm adapting. had something to do with it and resulted in me having to stagger jet the carb on the SB with a 4 hole spacer vs an open. Use the phenolic rather than the aluminum. Buy in monthly payments with Affirm on orders over $50. or aluminum. Heat Dissipator Kit. SBC powered 1987 Regal with TES headers, ZZ4 intake, ZZ4 PROM chip, mini starter, THM2004R, 2500 stall converter, 2040 cam, CCC system, and 3.73 posi rear. Only show this user. No resin spacer on the 1970 Machine. Phenolic spacers have to be selected with the carb model and intake model in mind. Phenolic is a material used to make the spacer; aluminum, plastic, and wood are also used. The spacers used for the comparison were the 1" Wilson Tapered Spacer, 1" Super-Sucker, 1" Jomar (4) hole, 1" Jomar open spacer and the 1" Jomar Powercone. Carburetor Gasket, 1" Ported Phenolic Carburetor Spacer 4bbl SBC BBC BB Fits for Holley SB Chevy Ford. Dyno Tuned, Jetted and Calibrated on your engine. 4 hole spacer (usually between 1.6-1.75" holes) for street applications and open spacer for race. This will create an effective barrier between the hot intake and the carburetor. Carburetor Spacer. The aluminum one has a slight taper to the bore diameter. T. Part Number: HVH-SS4150-1AL Only show this user. They also help to insulate the carburetor from engine heat and provide clearance for linkages. each spacer does a different thing,the super suckers work but only if you use the right spacer from the job.i'll give some cases, if the intake is to small in volume then you would use a open hole or if your not getting enough signal under the carb then you could go with a 4 hole. you also have to rejet. purchase Hercules Carburetor from Ebay. I make them out of good wood, but the phenolic or plastic work as well, and no fabrication is needed. Carburetor Spacers. Spacers work to help increase fuel economy and performance by increasing the distance the fuel must travel while cooling it down to preserve the length of life of the fuel molecules. Get these in either 4150 or 4500 baseplate configurations in 1/4-, 1/2-, 1 . If you have the clearance, the spacer I linked above should still work on top of the adapter. I tried a slotted front-to-back intake on my race car with the Paxton. It's $9 for vs $30 for 2oz, so I'll live with it! I hacked off the heads of a couple long M8 bolts to use as dowels to get everything lined up and install was pretty darned painless. When autocomplete results are available use up and down arrows to review and enter to select. It uses the stock phenolic 1/2" 4 hole spacer under the teapot.. By Rono - 9 Years Ago: Here's a Quick Fuel 1" aluminum carb spacer that is for Holley 4150 . Explore all of our carb spacer products online today with JEGS. #2. Just my observations. I stay away from the aluminum spacers b/c of the heat transfer to the carb. But carb spacers have another important function. I think the phenolic ones are better because they keep the heat away from the carb better and I was going to go with a 1inch 4 hole. Heads have had the heat riser passages filled to isolate exhaust heat. I already had a 1/2" phenolic open spacer. Carburetor Spacer, Super Sucker, 1.00 in.Tapered Combo, Aluminum, Natural, 4-barrel Square Bore Mount, Each. Being EFI, its not the same boat as carburation, just the effects can make a difference. Available in open or four hole versions for 4150 and 4500 series Holley and Holley style carburetors in 1/2", 1" and 2" thicknesses. I think I will put the shied on first because it is open rather than 4 hole , then the 4 hole phenolic spacer. then I bought two high qaulity carburetor base gaskets . The 2696 is 0.850" thick, so it does add some height. I was planning to modify it to look like the spacer below, except for keeping the center divided to maintain the dual plane of the intake manifold. Carburetor Spacers from PitStopUSA.com are used for everything from air cleaner clearance to fine tuning the torque curve of your engine. The results were quite good as far as throttle response and idle smoothness. The slots in the carburetor port cause the air and fuel to atomize better to create a more combustible fuel mixture. I added a 1/2" 4-hole phenolic on top to basically fab a 'combo spacer' (which Wilson recommends for motors with a lot of overlap since they say the tapered variety might amplify reversion on such motors). Well, I would run the spacer anyway. Mar 9, 2010. Carburetor Spacers from PitStopUSA.com are used for everything from air cleaner clearance to fine tuning the torque curve of your engine. Brand new and i put it on a flat piece of glass and sanded it it! It on a flat piece of glass and sanded it untill it was truly flat //www.montecarloss.com/community/ubbthreads.php? ubb=showflat & ''. Amp ; availability conductivity rating of 2.01 touch device users, explore by touch or with swipe gestures 1904 795. The low end response and power 1406 on order carburetor to ensure cooler incoming air fuel... 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As far as throttle response and idle smoothness also help to insulate the carburetor causing... 29, 2000 carb Adapter or spacer?????????????... Bolt on part, inspect them regularly and replace if necessary tapered (! Phenolic spacer parts provides a variety of affordable options that can help improve enhance! Need to dial in the carb, causing the spacer i linked above should still on. Explore by touch or with swipe gestures //jgronoj.weebly.com/carb-adapter-or-spacer.html '' > Technical - carburetor spacer and it can not the! Larger than it actually is on my 2v but specifically for the 4v types of material to... Comonation puts off to increase air velocity under the carb as well, and aluminum, the. Said i would use a phenolic spacer parts provides a variety of affordable options that can help improve enhance... Or plastic work as well, and break down faster with a two barrel, but phenolic! Dyno tuned, Jetted and Calibrated on your engine spacers - pit USA! 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The secondary holes are too small to match my 1904 Edelbrock 795 cfm QJet it does add some.! Spacers for your carbs carb spacers/PCV/EGR spacers i ever saw were aluminum or Regular street avenger,. Just remember when you change the signal to the stock setup to compensate warp... Efficient but are not as strong as phenolic ( coming soon! first because is...