Yet into the early 1990s, GM was putting the Iron Duke into some of its most popular models, such as the Pontiac Grand Am, Chevy S-10, and the Chevy Lumina. Putting a 70s era engine into a 1990 vehicle is like putting ketchup on a $75 steak. What happens to the 2.5 when pushed above say 130 or 140 (close guess) horsepower the lightweight crankshaft starts to flex (bends) distorting the rods and causes them (the rods)to eventually crack and break. The aftermarket and knowledge base for the GM Iron Duke isn’t nearly as big as the Chevy 350 or Ford 302. $39.99. Yes, an Iron Duke still delivers your mail every day. A quote system is in place on this page. The same principle applies to the Camaro Iron Duke. Nonetheless, there are numerous resources available to Iron Duke owners. Due to COVID-19 Restrictions, customer phone support has been suspended. Overall, the GM Iron Duke is a robust and reliable engine. Inspired by the 2.3 Vega, GM engineers developed a cast iron inline four-cylinder engine with a slightly larger displacement. The Iron Duke engine (also called 151, 2500, Pontiac 2.5, and Tech IV) is a 151 cu in (2.5 L) Straight-4 piston engine built by the Pontiac Motor Division of General Motors from 1977 to 1993. 151 Pontiac Iron Duke Inline Four parts in-stock with same-day shipping. The Iron Duke Pontiac engine VIN code A (also called the 2500, 151, Pontiac 2.5, and Tech IV, though the decal on the air filter assemblies actually reads "4 Tech") is a 2.5 L (150.8 cu in) I4 piston engine.All Iron Dukes were built by Pontiac beginning in 1977 and ending in 1993. The 2.5 Iron Duke has the same bell housing bolt pattern as a Chevy small block. Captains should first research the upgraded hull for the increased health and improved maneuverability it provides. Thomas met him on his visit to the National Railway Museum, and was described to be a very wide engine. And the 122's successor was the EcoTec engine, which is still in production today. Its horsepower is limited by its lower end, mainly the crankshaft and then the rods. General Motors sold the Iron Duke to AMC, who used it across their vehicle lineup as well. Crate engines are available from Jegs and other parts stores. Here is the Broad Gauge very old engine, Iron Duke. Let's start this section off with an anecdote. Engineers initially attempted to modernize existing V6 and V8 designs, and once considered developing a V4 to meet the market requirement. She was built in September 1920 as a class R3 road locomotive for heavy haulage work and saw many years' service on the Isle of Portland, hauling blocks of stone from the quarries to the harbour.. She returned to Fowler's works for … During that time, GM's 2.5L 4-cylinder "Iron Duke" was a capable option in a sea of relatively low horsepower engines. The engine does have the Chevy bell housing bolt pattern though. In 1985 a full-size working replica of Iron Duke, capable of being steamed, was commissioned by the the Science Museum. If you went to a gourmet restaurant expecting a fancy meal but were served fast food, you'd be disappointed. Engine choices were limited to Pontiac's Iron Duke inline-four engine and the new corporate 2.8 L LE2 V6 designed specifically for this platform. Free shipping. In that sense, GM met their goal. New demand for small, fuel-efficient cars, 8.25:1 (1977 to 1983) 9.0:1 (1984 to 1993). Replacing the timing gear is laborious, and requires the replacement gear to be heat-fitted onto the shaft. Most early engines came with a two-barrel carburetor, but later models after 1982 received throttle-body fuel injection. Pre-Owned. The Pontiac 151 Iron Duke is well-known for its use in the famous Grumman LLV, which is still widely used by the United States Postal Service. For all its follies, we do have the Iron Duke to thank for paving the way for better engines. Shop 151 Pontiac Iron Duke Inline Four parts and get Free Shipping on orders over $99 at Speedway Motors, the Racing and Rodding Specialists. The AMC Spirit, AMC Concord, and AMC Eagle featured the engine. The General Duked a lot of cars. The Iron Duke was a 4-cylinder, cast-iron pushrod engine born from oil shortages and government standards that demanded cleaner vehicles. After this time, the GM 2.2 L OHV 4-cylinder replaced it across the entire lineup of vehicles that offered it. If you were to do a quick Google search for "The Worst Cars Of All Time," the 1982 "Iron Duke" Camaro would inevitably be named. The Iron Duke itself is a fairly straightforward engine. Brand New. It should never, ever be done. Produced under the Pontiac brand name between 1977 and 1993, the Iron Duke is prolific in small cars and utility vehicles. Rebuilt GM Iron Duke Engines Quotes. The Iron Duke or Tech 4, as it was later called, was a simple engine with more potential than most of us realize. This ‘pushrod’ motor features a tried-and-true two-valve design and a single timing chain located in front of the block. When the antiquated sensor fails, it causes numerous issues from rough idle to poor acceleration. Let us know the engine year and make. The Iron Duke is a single cam overhead-valve inline four-cylinder engine. Please email all your inquiries. From a design standpoint, the simple and durable Iron Duke was an all-purpose winner for General Motors. Remember that up to that point, the Camaro was a legendary and successful sports car. Performance Street driving. Dry weight was a mere 375 pounds. The engine in itself wasn't bad, but it was the perspective of vehicles it was in that left a bad taste in the industry's mouth. ... Now you can read about some methods to improve the overall engine performance of the stock Fiero 4 cylinder motor. This kit features a Hydraulic-Good combination of torque and power. For General Motors, the engine of choice was the Iron Duke, a four-cylinder inline engine with an iron block and head. The Iron Duke was GM's way of playing it safe, and in 1993 they said goodbye to their clunky cast-iron engine. Jeep CJ 80-83 2.5L 4 Cylinder Engine Wire Harness Wiring Loom Iron Duke. The aluminium Vega engine did show some inpressive proformance characteristics as modified by Cosworth but was hopeless as a practical economy engine. There was a time when you could gloat to your friends about packing a 90 hp engine in your car. This continued until 1984, when AMC replaced it with a 2.5L 4-cylinder engine of their own design. Turns out bad things do, too. The Iron Duke was only available in the base “Sport Coupe” Camaro trim, and the engine got a boost to 92 HP for the 1983 model year. FX 6661). In a less-than-favorable review of the 1984 Fiero, Road & Track said, "It's good that the Fiero behaves so sportingly when flung about, because the engine...is just barely powerful enough to please. $222.38. While the Iron Duke of the early 90s wasn't quite the same as the Iron Duke of 1977, it's hard to overstate the audacity of this practice. The ad is slick but little did buyers know that the Sport Coupe would develop the reputation of being one of the worst cars of all time. or Best Offer. or Best Offer. Behold, GM's Iron Duke. The name ‘Iron Duke’ came from GM’s decision to switch from aluminum to cast iron. In fairness, there is enough torque, a respectable 134 lb-ft at 2,800 RPM, available through a wide enough band to keep the car moving along strongly without a lot of shifting.". 15657, reg no. The Iron Duke would see itself in a slew of GM's vehicles during its production run from 1977 to 1993, including Pontiac Sunbirds, Chevy Blazers, GMC Safaris, Buick Centurys, and most notably, the Camaro. GM25 Header Info It is this method that is one of the fastest to use. The engine produced between 85 and 110 horsepower and 123 to 135 lb-ft of torque. The Little Engine That Could! But when the newly designed 1982 "Iron Duke" Camaro made its debut, the 90 hp engine left something to be desired. During its 14 year production run, the Iron Duke found its way into every GM division except Cadillac, and it didn't make good impressions along the way. He told Thomas that his type of gauge, broad-gauge, was us… Additional discussions can be found all over the web, including an occasional Q&A on Pirate4X4 or Reddit. The Pontiac 151 Iron Duke is well-known for its use in the famous Grumman LLV, which is still widely used by the United States Postal Service. New demand for small, fuel-efficient cars required GM to take a serious look at an economical four-cylinder engine. General Motors began developing the Iron Duke in response to the oil crisis of 1973. Iron Duke: 1847 1871 One of the first batch built, with 18 ft 6 in (5.639 m) wheelbase. The traction engine that featured as The Iron Maiden was a John Fowler & Co. 7 nhp showman's road locomotive (works no. While the Iron Duke has a 4 inch bore with a 3 inch stroke yielding a smaller displacement of 151 cubic inches, the 153 has a 3.875 inch bore and a 3.25 inch stroke. Free shipping. Pre-Owned. The Iron Duke was a 4-cylinder, cast-iron pushrod engine born from oil shortages and government standards that demanded cleaner vehicles. Grumman produced over 100,000 of the iconic LLV mail truck between 1987 and 1994. Iron Duke was an advetising name given to an engine used in sub-compact GM cars to differentiate them from the earlier Chevy Vega aluminium engines which were a disaster. Popular forums with ongoing expertise include the S10 Forum, Pennock’s Fiero Forum, and the Jeep-CJ Forum. It was marketed as the "Iron Duke" because the Chevy Vega aluminum block engine was a disaster with lots of bad press. Are you working on a 151 c.i. By Murilee Martin. Small changes were made to the engine for some applications, but the motor remained fundamentally unchanged between brands. This is true of the Iron Duke engine as well. At least this car has a five-speed manual transmission. The Iron Duke would also go on to be installed in many other models in the GM stable. "The Iron Duke" is certainly the type of name that demands respect and conjures visualizations of John Wayne sitting atop a massive steam engine that stops for nothing. In short, the Iron Duke took the "muscle" out of this classic American muscle car. A common point of failure on fuel-injected models is the MAP sensor. The Iron Duke, also known as the Pontiac 2.5, has a displacement of 2.5 liters or 151 cubic inches. Additionally, AMC opted to install the 2.5 I4 in base-model Jeep CJ-5 vehicles. They say all good things come to an end. It had no balance shafts, multiple valves, cam phasing or any other advanced technology. Watch; Tornado mileage device # 735-4772 For GM Iron Duke 2.5 L 4 cylinder engines. Free shipping. Watch; JEEP CJ CJ5 CJ7 CJ8 2.5L 4 CYL IRON DUKE ENGINE GM 151 COIL BRACKET OEM. This top end performance kit is eaxcatly what you need to take the Iron Duke to the next level. The Iron Duke would see itself in a slew of GM's vehicles during its production run from 1977 to 1993, including Pontiac Sunbirds, Chevy Blazers, GMC Safaris, Buick Centurys, and most notably, the Camaro. Most LLVs came with the Iron Duke, but later models utilized the GM 2.2 I4 as a replacement. The USPS initially specified a 24-year service life, but the Iron Duke-equipped LLVs have already surpassed expectations. When you're in a sports car, you expect a certain level of performance, not a sluggish ride. $129.99. Watch; X S p V o n s o 6 3 r O 8 N K D N P e d. Engine Rebuild Kit Jeep Pontiac 151 2.5L OHV L4 Iron Duke 1980-1983. In 1980, GM began to sell Iron Dukes to AMC, which utilized it as a base engine for their Spirit, Concord, Eagle, and Jeep CJ. The most common failure point of the 2.5 is its timing gear, which is known to chip a tooth at around 80,000 miles. Still, the Iron Duke will probably stick around a little longer. It was also used in the Chevrolet Manza and the Oldsmobile Starfire. The everyday USPS mail truck, called the Grumman, packs an Iron Duke. And a new Grumman hasn't been produced since 1994, meaning every time you pass a mail truck, you pass a very unique piece of American automotive history. … General Motors found numerous applications for the Pontiac Iron Duke. But at the time, a peanut farmer was president and men were wearing platform shoes (this was the 70s, btw). The majority of Pontiac Fieros were built with the cast iron, pushrod, low rpm, 2.5L four cylinder engine. Not to be confused with The Duke, who happens to be John Wayne. Advertised as the Super-Thrift 153, due to its 153 cubic inch displacement, this engine is not to be confused with the Pontiac Iron Duke 2.5 liter engine. It's not like GM meant for the Iron Duke to be a performance engine. In fact, you probably come across one more than you think. EGR valves also fail frequently, though emissions components are cheap and readily available. While not a perfect facsimile of the first engine of the class, the Iron Duke replica represents the class as a whole and some of the changes made over its working life. Forums are an excellent place to look for information and troubleshooting tips. The 1984 Fiero had a slew of problems, the Iron Duke being one of them. The result was an engine that came to be known as the “Iron Duke.” The iron reference possibly emphasized that this GM 4-cylinder powerplant was not aluminum. (2.5L Iron Duke) 4 cyl? The first Iron Duke engines were made in 1977 using the dimensions and characteristics from another earlier Chevy engine. Iron Duke 151 Fiero's. The GM Iron Duke is a 151ci inline four-cylinder gasoline engine. But alas, if John Wayne were behind a the wheel of a 1983 Fiero, he'd probably shake his head and give you that classic, "I'm not mad, I'm disappointed" look. Upon submission of the data, pricing is given for review.

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