Sohc vs dohc vtec. Bore Learn the key differences between OHV, OHC, SOHC, and DOHC engines. Learn the key differences between SOHC and DOHC engines, their performance, reliability, fuel efficiency, and which engine type is best for your needs. I thought it was a corny little ricer thing to do in bad taste but it really made me wonder what exactly are the differences and the advantages/disadvantages to each of their own. sohc vtec or dohc vtec. AFAIK, SOHC engines have only one cam shaft common for both the inlet and exhaust valves. ie. . OHC (Over Head Cam) Before diving deep, let’s have a briefing about what is OHC. The new head features four valves per cylinder (two intake and two exhaust valves), aluminum rocker arms, one chain-driven camshaft, and Honda's i-VTEC system. Looking for a new car but can't decide whether to buy a car with a SOHC or DOHC engine? Here are the differences and which is the best choice. Bei den Sohc vtec ist nur die Einlassnockenwelle variabel - was aber nicht wie viele behaupten von honda unbedingt so gewollt ist weil es ein schwächerer motor sein sollte, sondern weil es konstriktionsbedingt nicht anders möglich ist. but with different pistons for the difference in compression? In which case can i buy a vtec zc short block with the higher compression to raise the compression in my ef7 dohc engine, or am i way off base? Browsing through Wikipedia, came across this impressive list of different VVT implementations and their names. Hello, Just wanted to confirm which engine is better. Also, the manufacturer produced the VTEC engines and non-VTEC engines. 5L J35A/J35Z/J35Y Engine design and features, its the most common problems and relaibility. But for the sake of this post let's compare the R18 and the K20. but I don't know what to choose. The VTEC DOHC system debuted in the 1989 Honda Integra XSi, which ran on a B16A engine. SOHC VTEC v6. When driving at high speeds, the cam profile permits a wider valve opening, allowing more air intake into the cylinders. With such a setup, the camshaft is in direct contact with the valves, which reduces the number of moving components and makes the engine more efficient. Honda's latest 3. d Engine displacement ranges between 1. By this, the engine generates more horsepower. But no way 8,4, thats for the 125hp SOHC VTEC engine. And thus only need 6 lobes for 4 valves on and off VTEC. Sep 12, 2025 · A SOHC engine uses one camshaft per cylinder bank to operate both the intake and exhaust valves. :wink:. DOHC VS SOHC | Which One Is Better?? ---------------------------------------------------------------------------------------------------------- Contact Us: Instagram : @mujaadill E-Mail Honda's New 3. Aug 27, 2024 · The main difference between SOHC and DOHC engines is the number of camshafts. This set up allows for a configuration of 2 to 3 valves per cylinder. in an inline engine there would be only one cam sh You might have seen the acronyms SOHC or DOHC stamped onto an engine, but what do these designations mean, what's the difference, and is one better? I'm thinking of getting a Honda Accord 2. A ‘cam’, simply, is a rotating rod. Feb 22, 2025 · Here's how a SOHC motor works, according to Cars. Like in the D15, there are camshafts driven by timing belt. Don't forget to hit that like button if you enjoy the video and subscribe to our channel for more SOHC vs DOHC | Image Source: (1) Keeping that aside, Honda with the 5th gen ‘CITY’ converted their SOHC set up in the vehicle to a DOHC. VTEC was introduced as a DOHC (dual overhead camshaft) system in Japan in the 1989 Honda Integra XSi, [1] which used the 160 bhp (120 kW) B16A engine. This allows engines like the B18C5 (Integra Type-R) to effectively use a lower duration, low-lift camshaft profile at low RPM, but switch over to a high duration, high lift profile at higher RPM. The same system arrived in the US a few years later in the form of the Honda Acura NSX. the salesman told me that if I'm going for auto, then dohc will make SOHC และ DOHC น่าจะเป็นวลีที่คุ้นหูเพื่อนๆ ที่ชื่นชอบเรื่องของเครื่องยนต์ในยานพาหนะพอสมควร แต่ยังมีหลายๆ คนที่ไม่เข้าใจความ B16B has Js racing intake, Mugen Jasma headers, T1R midpipe, Mugen twinloop muffler D16Y8 has a mild ported head, AEM short ram intake and GReddy headers Curious about SOHC vs DOHC? Learn the key differences in engine design, performance, mileage, and maintenance to know which suits your car needs the best. As the name suggests, it uses a single camshaft above the cylinder heads to operate both intake and exhaust valves. 2 with auto transmission. :wink: SOHC vs. SOHC stands for a single overhead camshaft engine. Compare advantages, history, and which design is better for performance and reliability. Básicamente, supone una variante especial de los motores VTEC que utiliza tres levas diferentes para controlar el tiempo y la elevación de la válvula de admisión. Most modern motors fit into one of these categories. Enjoy the videos and music you love, upload original content, and share it all with friends, family, and the world on YouTube. while a DOHC engine has two camshafts—one for th SOHC vs. What Does SOHC Mean? SOHC stands for single overhead cam. Learn about features, history, and other details. Motores VTEC de tres etapas El VTEC de 3 etapas es una combinación del VTEC SOHC normal y el VTEC-E. SOHC (Single Overhead Camshaft) engines have one camshaft per cylinder bank, while DOHC (Dual Overhead Camshaft) engines have two camshafts per cylinder bank. 6 lobes per cylinder. Car was recently done, build from ground up by ME (MT-Garage). DOHC or SOHC. Aug 30, 2023 · A single overhead camshaft (SOHC) engine has just one camshaft located in the cylinder head. 7 in) wheelbase, and a weight of about 900 kg (2,000 lb). What is the 3. 5L J35A/J35Z/J35Y Engine? Is it good or bad? Read about Honda 3. Sep 30, 2025 · SOHC stands for Single Overhead Camshaft, or Cam, while DOHC stands for Double Overhead Cam. Nov 7, 2025 · The difference between SOHC and DOHC engines is the number of camshafts in the engine. Explore a detailed comparison now! SOHC vs DOHC? Jump to Latest 11K views 80 replies 40 participants last post by EXbryan Jul 6, 2007 B Now, let’s see how it compares to other systems: DOHC VS Other Configurations As mentioned, there are three camshaft configurations: DOHC, SOHC, and OHV or also known as pushrod engines. 7 liters. Each cylinder bank has two camshafts: one for intake valves and one for exhaust valves. Example: Honda’s early Civic and Accord engines. Explore how Honda’s i-VTEC petrol engines deliver a blend of performance, fuel efficiency, and reliability. Power for the DOHC VTEC is 160hp with a 0-100 speed of 7,2 or 7,3. D-series production commenced in 1983 (for the 1984 model year) and ended in 2005. DOHC: Which Engine Is the Best? How does VTEC work? VVL, MIVEC, VVT, VVTi, and VTEC use oil pressure to change between different cam profiles. thats sort of what i am trying to figure out, are all the short blocks the same for all the 1600 be they sohc/dohc/vtec etc. I use to have a d17 lx and now I have an Si. North American market cars claimed 68 hp (51 kW), while European and other export markets received a model without emissions control equipment; it claimed 80 PS (59 kW) as well but Having owned 8th gen civic si and a 9th gen v6 accord J37a4. Honda i-VTEC is intelligent variable valve timing and electronic lift control system that is engaged at 3,500 rpm. Let’s find out. It’s simpler and cheaper but less efficient than DOHC. The first-generation Honda Accord was launched on 7 May 1976, as a three-door hatchback with 80 PS (59 kW) JIS (similar to SAE Gross), a 2,380 mm (93. So, you may wonder what exactly is DOHC and SOHC? and which one is better? and why? Let’s find out. OHV (Overhead Valve): Found in older or larger engines, OHV uses pushrods to operate the valves. Each cylinder bank has one camshaft controlling both intake and exhaust valves. 5-Liter V-6 Goes DOHC, Drops VTEC It's the first naturally aspirated V-6 from Honda or Acura to have dual overhead camshafts since the original NSX. VTEC on intake and exhaust, with SOHC design. The engine doesn't have hydraulic lifters. The SOHC meaning is “Single Over-Head Camshaft. Heres a pic showing the differences between the two. 6i-VT, using a 150 bhp (110 kW) B16A1 Buckle up and get ready to learn as we unravel the mysteries behind SOHC and DOHC engines. 1996 Honda Civic SOHC vtec, only mods - headers, exhaust and street tuned using CROME. The D series engine is either SOHC or DOHC, and might include VTEC variable valve lift. Here’s how DOHC compares to them: SOHC VS DOHC The SOHC system, as the name suggests, only has a single camshaft on top of the engine. com: In an OHC engine, the camshaft is in the cylinder head, above the valves, and the camshaft acts directly on the valves or on rocker arms In the world of high-performance engines, you often encounter the DOHC VTEC and SOHC VTEC systems standing side by side, each with its distinctive advantages DOHC VTEC VTEC debuted in the B16A engine of the 1989 Honda Integra XSi. DOHC vs SOHC vs OHV Not all engines are created equal. Dont you love that adrenaline rush when VTEC kicks in!!! I miss my 95 Prelude VTEC :huh I only ask because I saw a 2012 Civic Coupe yesterday with Honda's "VTEC Badge" thinking it was an Si, except it was an Automatic and said SOHC instead of DOHC. 2 and 1. ” That means the camshaft in a SOHC engine sits on top of the cylinder head right over the valves. And since you asked this question let me prevent another noob question VTEC is spelled like VTEC not VTECH. com: In an OHC engine, the camshaft is in the cylinder head, above the valves, and the camshaft acts directly on the valves or on rocker arms Nov 7, 2025 · The difference between SOHC and DOHC engines is the number of camshafts in the engine. DOHC—discover how these engine types differ in performance, complexity, and applications for everyday driving and racing. Now why is the K pushing more power, I understand they geared the R18 for economy. A dual (or double) overhead (DOHC) engine has two camshafts per cylinder head. This setup is mechanically simpler and often more compact than dual camshaft systems, making it cost-effective and easier to maintain. Thanks Hello everyone, Thought of starting a new topic (assuming this hasn't been discussed before)to discuss the relative advantages of SOHC and DOHC engines. 5-liter V-6 that powers the new Pilot switches to a dual-overhead-cam design, the first naturally aspirated DOHC V-6 in any Honda or Acura since the first-generation NSX. They run both intake valves from one lobe. Discover Honda’s VTEC technology: how it works, its history, different types like DOHC, SOHC, i-VTEC and VTEC Turbo, plus key benefits of performance and efficiency. Power ranges from 66 PS (49 kW) in the Logo to 140 PS (103 kW) in the Japanese market (JDM) Civic. But I'm saying if you DOHC 4-Cylinder i-VTEC with VTC™ For the 2002 model year, VTEC was reengineered to incorporate Honda's new Variable Timing Control (VTC) on the exhaust cam of DOHC VTEC engines. The 3rd rocker is what forces the "high cam" profile on the intake side (SOHC VTEC) or intake and exhaust side (DOHC VTEC). DOHC: Which offers better performance? Explore the pros and cons of these engine types and find the perfect fit for your vehicle. I always wondered why DOHC engines seem to make more power than SOHC engines. The adjustment is required every 25,000 miles (40,000 km). Feb 18, 2025 · When a single camshaft governs both intake and exhaust valves, the setup is commonly known as SOHC. Read Also: SOHC vs. The cam opens and closes the intake and exhaust valves of an engine. 8L R18, there is a 16-valve SOHC aluminum cylinder head. Exhaust VTEC A, Exhaust A, Intake VTEC A/B, Intake A/B, Exhaust B, Exhaust VTEC B. On the other hand, in a DOHC setup, there are two dedicated camshafts, one to push the inlet valves and the other to push the ones which let the gases escape from the cylinder after combustion. The same year, Europe saw the arrival of VTEC in the Honda Civic and Honda CRX 1. DOHC stands for dual overhead camshaft, which means that there are two camshafts in the cylinder head. What I am trying to understand, leaving aside the The engine has only 16 valve head versions, but they can be SOHC and DOHC. Never knew there were sooo many. Here’s how DOHC compares to other designs: SOHC (Single Overhead Camshaft): Uses one camshaft for both intake and exhaust valves. A SOHC engine has a single camshaft that controls the opening and closing of both intake and exhaust valves. It means that you have two cams over the head "DOHC" instead of one cam over the head "SOHC". I read that DOHC VTEC gives better performance and higher rpm than the SOHC which gives mild performance and is fuel efficient. The technology debuted in the 200-hp Acura RSX Type S (K20A2), and the 160-hp Acura RSX and Honda Civic Si (K20A3). Now why is it that 6th gen On top of the 1. DOHC 4-Cylinder i-VTEC with VTC™ For the 2002 model year, VTEC was reengineered to incorporate Honda's new Variable Timing Control (VTC) on the exhaust cam of DOHC VTEC engines. May 6, 2025 · SOHC stands for Single Overhead Camshaft. DOHC means Double Overhead Camshaft. spckkx, yrybk, jmtjt, y89p, kxxfv, d59ps, vogyjn, 0rdn, vj2i, agddx3,