A Ford interference engine is an engine where one or more of the valves protrude into an area through which the piston may travel meaning that if something goes wrong with the timing belt or chain, serious engine damage could occur as a result of a collision between valve and piston. The Ford 4.0 engine is a V6 engine that was first introduced in the 2006 model year. Interference Engines - Complete List This cookie is set by GDPR Cookie Consent plugin. Torque remained the same at 245 lb-ft. One other minor change on the CFI version of the 302 was the use of a cast-iron intake manifold versus the dual-plane aluminum manifold on the non-CFI engine. See more at: https://carbuyingsupport.com/, Your email address will not be published. This is an unusually early 1968 302 block factory assembled as a 289. The Ford 302 has been used in quite a few Ford, Lincoln and Mercury models over the year including vans, pickup trucks and of course the popular Mustang. Unplug the electrical connections to the starter motor and alternator. The Coyote engine is widely considered to be a rock-solid reliable engine. Alternative Views: ****A $410.00 core charge will be added during checkout****. It is a DOHC engine with 24 valves and produces 250 horsepower at 6000 rpm. In addition, the 4.0 SOHC engine is very rugged and durable, which makes it ideal for use in tough conditions such as off-road driving or towing. 3.4L Non-Interference Engine History Of The Fox Body & 1994-95 Mustang 1979 Fox Body Mustang Do you need underlay for laminate flooring on concrete? 2.7L DOHC Interference Alldatadiy.com offers redrawn diagrams as well as factory diagrams. Moreover, you can bring your vehicle to a car care shop for a leak-down cylinder test or a valve-gap check. 2.5L V6 Non-Interference S/V/C 70 Interference What makes a car an interference or non interference engine? Belt driven engines like some of the 4 cylinders are not interference, but the valves will still hit if the belt breaks at 6000 rpm (Zetec for example). 3.0L V6 Non-Interference The cookie is set by the GDPR Cookie Consent plugin and is used to store whether or not user has consented to the use of cookies. Analytical cookies are used to understand how visitors interact with the website. 1.6L DOHC Interference Analytical cookies are used to understand how visitors interact with the website. We also use third-party cookies that help us analyze and understand how you use this website. Manage Preferences - An "interference" engine is an engine which the failure of the timing chain would cause damage to either the pistons or the valves, due to interference between the top of the piston at TDC, & any opened valves. If there is a gap, the engine is called a non-interference engine. Advertising - This engine was rated at 140 horsepower and 250 lb-ft of torque with an 8.4:1 compression ratio. The cookies is used to store the user consent for the cookies in the category "Necessary". However, when you own a vehicle, you must know its features. Ford introduced the 5.0L V8 as an option for the Explorer in 1996. 2.4L SOHC Interference 1.9L Ecotec DOHC Intereference By clicking Accept All, you consent to the use of ALL the cookies. This engine is used in a variety of Ford vehicles, including the Edge, Escape, and Explorer. im not to keen on that use of the term "may live" haha, Small Block V8 (221, 260, 289, 5.0/302, 5.8/351W), Do Not Sell or Share My Personal Information, 2023 Super Duty Order Tracking / No Off Topic Please, 73 F100 302 with Mustang 5.0 stock headers. 2.8L Non-Interference You can do it by improving the compression ratio and allowing the valves to improve airflow. An interference engine is one that has insufficient clearance between the valves. 6XXX six-cylinder engines Interference Yes, all 289/302/351 engines that I know of are definitely interference. If it was me, I'd be ready for the worst, pull the engine and have at it. There is no definitive answer to this question as it depends on a number of factors, including the make and model of the engine, driving conditions, and personal preferences. So, you have to expect that repair will be costly. Out of these, the cookies that are categorized as necessary are stored on your browser as they are essential for the working of basic functionalities of the website. I hope this low performance, (185 HP @ 3800 rpm) engine uses dished pistons and low lift figures on the valves, while the Mustangs 302 HO (?) An interference engine is one thathas insufficient clearance between the valves and pistons if the cam stops turning due to a broken timing belt. Pretty rare for a timing chain to flat out break. Well, it might not be that important for you because you can always bring your vehicle to a car care shop when needed. In this video, LMR goes over everything you need to know about the small block Ford 302 engine for 1979-1995 Mustangs. Yes ALOT of Ford smallblocks had the nylon coated teeth and they can play hell. It does not store any personal data. With Ford, generally anything with a chain is gonna be interference. The rest of Ford's powerplants rely on timing chains to keep the camshaft and valves moving. Is my motor interference or non interference? Non-Interference 2.3L 4 Cyl. Does your car have an interference or non-interference engine? (200 hp @ 4000 rpm) had flat top pistons, and higher lift cam. 1.8L Diesel Interference 2 Is my motor interference or non interference? tappet cam. 2.2L Interference It was also used in trucks. Share. This means that if the timing belt were to break, the valves and pistons would collide, causing major damage to the engine. The chain runs over a series of sprockets that are mounted on the camshafts. A used but running unit will already do the job. This cookie is set by GDPR Cookie Consent plugin. 2003 Ford Focus Timing Belt Or Chain All the North American 2003 Ford Focus models have timing chains or timing belts and are interference or non-interference depending on the engine. For all of its minor quirks, the Coyote-equipped generation is one of the best used Mustangs available. For 1997, revised cylinder heads increased output of the 5.0L V8 to 215 hp. The 4-barrel carb came with a redesigned automatic choke and was rated at 165 horsepower, which was 10 less than the manual. The 302 cubic-inch engine was first referred to by Ford as a "5.0-liter" V-8, which was a metric unit of measurement rather than the U.S. customary notation. You also have the option to opt-out of these cookies. The cookie is used to store the user consent for the cookies in the category "Other. The new 5.0 carried an H.O. When the piston is at the top dead center (TDC), both intake and exhaust valves are closed. Other common brands coming with non-interference engines are Subaru, Suzuki, Volkswagen, and Volvo. 3.5L Non-Interference The 1987 version of the small block 302 was rated at 225 horsepower and 300 lb-ft of torque. B204 (E, F, GT, FT) Interference An interference engine refers to a 4-stroke internal combustion piston engine type. Another way is to find out your cars engine model and check its engine type using the lists below. The Ford 4.0 L V6 is a popular engine choice for many Ford vehicles. Thanks for the welcome. Probably cheaper to stick another engine in than repair. The first engine debuted in the form of a 221 cubic-inch small block that was offered in the Ford Fairlane. 2.0L Non-Interference Although, early 87 cars did have E5TE cylinder heads which were first used on the 1985 truck engines. 1.6L DOHC (Storm) Interference PUSHROD CRATE ENGINES // 302. 2.2L Gasoline Non-Interference Many car enthusiasts consider the 4.0 L V6 to be one of the best engines available on the market today. Early Access To Exclusive NEW Products, News, Tech & MORE! However, they are not as durable or efficient as interference engines. 1.6L SOHC 16 Valve Engine (Tracker) Interference This cookie is set by GDPR Cookie Consent plugin. Interference engines are common among the latest automotive models. This includes everything from the older 289/302/351 pushrod V8s to the latest OHC 4.6L and 5.4L V8s. The Ford Mustang comes with one of three engines a 4.0-liter V6 that makes 210 horsepower and 240 pound-feet of torque, a 4.6-liter V8 that makes 300 horsepower and 320 pound-feet of torque and a 5.4-liter V8 that makes 500 horsepower and 480 pound-feet of torque. From cylinder heads, camshafts, valvetrain components, and engine blocks; its hard to beat some old-school hot-rodding in a world filled with high-tech, state-of-the-art engine technology. They should have cut reliefs in the pistons for valve clearance of course. 1.8L DOHC Gasoline Interference Bubbabud 2011 XLT SCAB Ecoboost, The following errors occurred with your submission, Ford F150 Forum - Community of Ford Truck Fans. Instead, you can have the cylinder head rebuilt and the bent valves replaced. The firing order was also changed from 1-5-4-2-6-3-7-8 to the 351 Windsor sequence of 1-3-7-2-6-5-4-8 which we have detailed in the image below: The cylinder heads were larger than those of the 4.2-liter and most people referred to this as normal 5.0 intake ports. The Ford engineers supplied a larger mass air flow meter which was the same size as the '93 Cobra. Per the OEM Manuals, the 4.6L is an interference engine. (B2500) Non-Interference Greg Macke is a car blogger and author of My 7 Secrets to Buying a High Quality Used Car. Vehicle Transmission Drive Wheels [email protected] RPM Torque (lb-ft) @ RPM; Ford Edge Sport (2011 - 2014) Six-speed automatic: AWD: 305 @ 6,500 rpm: 280 @ 4,250 rpm 1-8. . Registered. SLX Non Interference, 1.4L, 1.5L & 1.6L Interference Save my name, email, and website in this browser for the next time I comment. You might ask, is it important to know whether your car has an interference or non-interference engine? 1.6L 8 Valve Engine Non-Interference The Zetec IS an interference engine, give that regular pistons will hit the valves. It featured a Motorcraft carb which was rated at 368.5 cfm and the intake manifold was cast aluminum. 1.8L DOHC (Prizm) Interference I've never done this before so reading/watc. The cookie is used to store the user consent for the cookies in the category "Performance". 1.8L Diesel Interference 2.8L V6 90 100 Quattro A4 A6 Interference, 2.5L 325I 525I Interference 3.0L SOHC 12 Valve Engine Non-Interference I question the timing chain on mine even tho its only got 123k on it. 3.5L DOHC Interference, 2.5L Non-Interference This cylinder head was used on LX and GT Mustangs until the retirement of the Fox Body Mustang in 1993. Advertisement cookies are used to provide visitors with relevant ads and marketing campaigns. 3.5L Non-Interference, 2.0L Non-Interference Even the GT-40 version of the 5.0 in the '93 Cobra also had a very conservative rating of 235 horsepower and 280 lb-ft of torque. 5.0L/302 5.0L/302 . This version of the 302 was now rated at 210 horsepower and 270 lb-ft of torque. Mustang & Lightning Tech, Articles, How To Videos, 94-04 Mustang Tech, Articles, How To Videos, GT-40 version of the 5.0 in the '93 Cobra, 1979-1993 Mustang Coyote Engine Swap Parts, 1979-1993 Mustang Fox Body Exterior Body Parts, 1979-1993 Mustang Fox Body Interior Parts & Accessories, 1979-1993 Mustang Fox Body Restoration Parts, 1979-1993 Mustang Fox Body Suspension & Chassis Parts, 1994-2004 Mustang Coyote Engine Swap Parts, 1994-2004 Mustang Interior Parts & Accessories, Mustang 302 & 351 Cylinder Head Bolt Size Guide, The Ford 302 Engine | Everything You Need To Know. Website content, text, & images Copyright 2023 LMR.com - All Rights Reserved. Is a 302 Ford an interference engine? The new 5.0L V8 option was developed with the target to compete with the GM 6.2L V8 engine and the new Chrysler 6.4L Hemi. Posted 5 months ago in San Antonio, TX. The 4.0 OHV is a reliable engine, but it is known for consuming oil and developing valvetrain noise. 1.6L Non-Interference Timing chain warns the driver unlike timing belts. Under the wrong conditions, any engine that jumps timing may be damaged. But it did have some issues for a number of drivers. Another common problem with this engine is intake manifold gasket leaks. 2.0L DOHC (Tribute) Non-Interference 4.0L Interference 2.0L SOHC Interference It was a 4.2-liter or 255 cubic inch variant of the 302 which had a smaller bore of 3.68 inches. This product can expose you to chemicals including chromium (hexavalent compounts), which are known to the state of California to cause cancer and birth defects or other reproductive harm. Can I just replace my timing chain or is there potential valve damage? Alternatively, you can take off the timing belt cover and look at how much clearance there is between the valves and pistons. Yes, all 289/302/351 engines that I know of are definitely interference. It should say somewhere whether or not your engine is interfering. 3.0L SOHC 24 Valve Engine Interference The Ford 4.0 engine is a V6 engine that was produced by Ford from 2002 to 2012. Stock, it may live, if you have larger valves or more cam lift, it will hit for sure. This may have been to distinguish the engines from the 300 cu Ford straight-six engine, otherwise known as the 4.9L. Non Interference engines are the type that have significant clearance between the valves and pistons. This means that if the timing belt snaps, the valves, and pistons will collide. Yes, all 289/302/351 engines that I know of are definitely interference. 2.5L V6 Non-Interference . The 2.0L Duratec engine in these models has a non-interference design.This engine is paired with either a 5-speed manual or a 4-speed automatic transmission and has a maximum output of 140 horsepower and 136 lb-ft of torque.. For anyone looking for a dependable, affordable, and fuel-efficient vehicle, the . The 302 is freewheeling. And, thanks for the answers too. 2.0L DOHC Interference This engine provides plenty of power for most applications, but it also gets good gas mileage. Answer (1 of 2): That depends on the manufacturer (there are several that make 3.5L engines). The timing chain on the 4.0 SOHC engine is made of metal links that are connected to each other with rivets. Check out our YouTube channel for even more tech tips, installation videos, how-tos, and more. There are several reasons why the Ford 4.0 V6 is considered a good engine. However, this also means that there is less room for error when it comes to maintaining proper timing between the pistons and valves. Interference engines made by Ford include its 1.6-liter single overhead cam engine, 2.0-liter double overhead cam engine, 2.2-liter engine, 3.0-liter single overhead cam engine and 3.3-liter engine. 3.0L & 3.2L SHO Non-Interference Interference engines are highly preferred because they are proven to breathe better, and their compression ratio is a bit higher, which guarantees better performance. Every engine is designed to be reliable and function without harming the engine, but when a foreign object breaks off and lodges in the intake or exhaust of an engine, thats when trouble begins. In thinking about this situation, the 302 might go either way on the freewheeling issue. What happens when timing belt breaks on non interference engine? The 4.2-liter engine, fortunately enough for enthusiasts, was only around for two model years which were 1980 and 1981. 1.8L Non-Interference What is used by primase to synthesize a primer? 2.3L V6 Non-Interference It was equipped with a standard two-barrel carburetor and was rated at 145 horsepower at 4400 RPMs and 216 lb-ft of torque at 2200 RPMs. If you are not sure about the type of engine your vehicle has, the list above is expected to help you identify it. The Zetec IS an interference engine, give that regular pistons will hit the valves. Is a 2002 Ford Focus a non interference engine? 2.2L SOHC Non-Interference Reviewers love the 4.6-liter V8. These engines 'breathe' better than non-interference, and they often have higher compression, which equals more power. However, in general, interference engines are more durable and efficient than non-interference engines. well i guess the 302 i bought lived a full life. 2.1L Diesel Interference The best place to go for anything Mustang related! All Honda cars from 1984 through 1996 have interference engines. of oil about every 3000-3500 miles. Do Not Sell or Share My Personal Information -, By logging into your account, you agree to our. FK Non-Interference engine What Is a Hemi Engine? Is there a 4.0 Mustang? On the other hand, interference engines have a short space between the pistons and valves and when the . However, the Zetec ACTS as a freewheeling engine, given that Ford put recessed pistons in the engine to give the valves clearance to be fully extended and the crank can turn without the cams without damage to the pistons or valves. 3.0L 944 Interference If you don't need the performance of a stroker and just need a reliable 302 Ford crate engine, look no further. A car engine that runs on water? With over 30 years of experience in remanufacturing stock replacement, marine and high-performance engines, Tri Star Engines is . Fortunately, the 4.0L SOHC is not an interference engine so a timing chain failure wont bend the valves. I have heard it said Ford never put a belt on an interference engine, so if you have a chain your results may vary. Non-Interference The timing chain is located in the front of the engine and is responsible for opening and closing the intake and exhaust valves in each cylinder. American 2V 351Clevelands came equipped with two barrelled carbs and as such the engine was designed to be the common version of the engine fitted to non performance cars. This may also cause one of the timing chains to break (typically the front left chain). 1.3L Interference Be careful not to damage the gasket surfaces when doing this. What are some interference engines made by Ford? 2.3L Diesel Interference For example, the 2019 Ford Taurus 3.5L option has a timing chain while the 1995 Ford Taurus 3.0L DOHC option has a timing belt. Just as the title says - is the 5.0 an interference engine? The following lists will allow you to determine whether your vehicle has an interference engine or not. These cookies track visitors across websites and collect information to provide customized ads. Yes, all 289/302/351 engines that I know of are definitely interference. Moreover, these valves extend to any area through which the piston may travel. 960 Interference They are reasonably priced too. Moreover, it refers to a 4-stroke internal combustion piston engine where the valves are completely open. 1.6L SOHC Interference In the past, Ive heard horror stories of shade tree mechanics installing such high lift cams, with radical timing, that the pistons hit the valves even though everything was timed correctly. The Ford 4.6 engine came with a plastic intake manifold from the 1996 until 2001 model years. 1.6L DOHC (4A-F & 4A-FE) Non-Interference Modern interference engine models have bigger valves that open up to the combustion chamber. Yes to non-interference design on that model (some others like SVT were interference design) but there have been people who bent valves when timing belts broke at speed despite the theoretical non-interference design. The 4.6 engine was extremely impressive Innovation when it was created in the early 1990s.