Mg midget front suspension upgrade1/4/2023 ![]() Because these parts are designed by Triumph to fit the cars, the swap is a snap and the results are nothing short of remarkable. This firm finds these parts overseas and imports them for American enthusiasts. They’ve even won countless SCCA championships.įor about $400, we sourced a set of these carbs, the proper intake manifold, a factory European exhaust manifold and a downpipe from Quantum Mechanics. These SU carburetors may be older technology, but they have served many owners very well through the decades. The factory paired these preferred carburetors with a free-flowing, cast-iron exhaust manifold that emptied into twin pipes. ![]() A nifty-looking, dual-inlet air cleaner wrapped in a black crackle finish was part of the package. In England, Triumph Spitfire 1500s were sold with dual SU carbs. These are both good solutions, but we went with an even easier fix on our 1973 Spitfire. Some enthusiasts opt for a Weber DGV down-draft or single side-draft 40 DCOE setup. While adding main bearings and redesigning thrust washers is not an easy feat, at least one of the engine’s problems can be addressed: without much headache better carburetion. To save money and meet the ever-stricter U.S. emissions standards, American-market versions of this 1500 were fed by just one carb, not the dual SU setup found on earlier Spitfires. The biggest problem with these engines, however, had to be the single, emissions-era Zenith Stromberg CVcarburetor. Thrust washers needed to be maintained, or crank walk would destroy them as well. The three-main-bearing design did not lend itself well to hard use. These engines were known to be delicate, especially if over-revved. Detractors complained of durability and drivability issues. ![]() More torque, as we know, helps produce better acceleration numbers.īut there were some problems. Right off the bat, this larger engine delivered more torque than its predecessor. Almost 100,000 of these engines were used in the 1973-’80 Spitfires, and nearly as many were used in MG Midgets sold from 1975 and later. ![]() While often lamented, Triumph’s 1500cc, four-cylinder engine is still owned and loved by thousands of enthusiasts. ![]()
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