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2011-2014 Mustangs
Driveline/Suspension
BMR K Member w/ Lowered Motor Mounts Concern
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<blockquote data-quote="Norm Peterson" data-source="post: 16270699" data-attributes="member: 193960"><p>Lowering the engine by 3/4" would only drop the overall car CG by about 1/8". Granted, whatever improvement would mainly affect front lateral load transfer (most people incorrectly call this "weight transfer"), but even if we assume that only front LLT is affected, it's only by some notional "total front weight" being lowered by 1/4".</p><p></p><p>In terms of front tire grip, don't expect more than negligible improvement (educated guess, on the order of 5 or 10 lbs @ 1g). That's because lowering the CG does more than just reduce the load on the outboard tires - when you transfer less load to the outside you're leaving more load on the inside tires.</p><p></p><p>A quarter inch less roll moment arm up front isn't going to reduce the amount of roll by enough to matter, meaning that any grip gains from cambers changing by something like a couple hundredths of a degree are also going to be negligible.</p><p></p><p></p><p>This mod is the kind of thing you'd do for either of two reasons. You're either competing for top finishing position at autocross/time trialing/wheel-to-wheel racing where you're close enough to where the small differences matter, or you're doing it strictly for subjective reasons (such as to give you another line item on your build poster at a car show). Both are valid reasons, but which should be kept strictly separate.</p><p></p><p></p><p>Norm</p></blockquote><p></p>
[QUOTE="Norm Peterson, post: 16270699, member: 193960"] Lowering the engine by 3/4" would only drop the overall car CG by about 1/8". Granted, whatever improvement would mainly affect front lateral load transfer (most people incorrectly call this "weight transfer"), but even if we assume that only front LLT is affected, it's only by some notional "total front weight" being lowered by 1/4". In terms of front tire grip, don't expect more than negligible improvement (educated guess, on the order of 5 or 10 lbs @ 1g). That's because lowering the CG does more than just reduce the load on the outboard tires - when you transfer less load to the outside you're leaving more load on the inside tires. A quarter inch less roll moment arm up front isn't going to reduce the amount of roll by enough to matter, meaning that any grip gains from cambers changing by something like a couple hundredths of a degree are also going to be negligible. This mod is the kind of thing you'd do for either of two reasons. You're either competing for top finishing position at autocross/time trialing/wheel-to-wheel racing where you're close enough to where the small differences matter, or you're doing it strictly for subjective reasons (such as to give you another line item on your build poster at a car show). Both are valid reasons, but which should be kept strictly separate. Norm [/QUOTE]
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2011-2014 Mustangs
Driveline/Suspension
BMR K Member w/ Lowered Motor Mounts Concern
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