How good are they? They look cool and seem like a simple physical modification for most cars compared to a turbo or super package. What's stopping someone bolting one onto something like a micra or ford ka?
>>28696040Balancing 8 single carbs is a nightmare. Any misadjustment or slop in linkage can easily throw a cylinder 25% out of whack.
>>28696062>Balancing 8 single carbs is a nightmare.they're only throttle bodies.but balancing 8 carbs isn't actually hard after finding ballpark for the jetting, truth is cylinder to cylinder distribution is rarely perfect even on fuel injection cars, often some are lean.If you really give a shit you probably need demolition headers with o2 bungs per runner to tune them correctly.itbs are just fuckin air blades and presumably injectors in them or on the intake
>>28696062Go fuel injection
most overrated car mod, total mememost half decent engines nowadays will have a properly tuned intake manifold which is barely giving up any power
>>28696070>>28696072Doesn't matter if carb or TB.Youre still talking about 8 butterfly valves.This is a common nightmare in the motorcycle world where 2/4/6 carb/TBs are standard.Factory linkage is great for ~50k miles. After that you start to get phase issues.Trying to balance 2 usually isnt bad. 4 can be frustrating. 6 requires skill.Aftermarket setups are generally horrible.
>>28696040>How good are theyNot really that good. Balancing them is a pain. Getting an air filter setup is a pain. And it's generally really expensive. If you have a single carb v8 with a big camshaft then going ITB can gain you some mid range power because it mitigates the problem of exhaust reversion, but on a Ford Ka you aren't going to gain any horsepower. >but muh throttle responseThat is because you have multiple butterflys opening at once. Basically the physical version of having a more aggressive throttle map. Not really a good thing.
>>28696040absolutely worst bang for buck mod
>>28696040>What's stopping someone bolting one onto something like a micra or ford ka?They cost more than the entire car and gains of diminishing returns
>>28696088>put pedal at wot>adjust to make sure they all are WOT but also all return to 0% inputis this really that hard
>>28696040https://www.youtube.com/watch?v=zonvcNFbOgwCan be done, just requires a bit of ingenuity and CAD know-how.You most likely won't really get any extra power out of it, but the response will be quicker and it'll sound cool.
>>28696040>How good are they?Dey a'ight.>They look cool and seem like a simple physical modification for most cars compared to a turbo or super packagePlug 'n play ITB kits are easier to install than plug 'n play forced induction kits, but it's the reverse for bespoke setups.>What's stopping someone bolting one onto something like a micra or ford ka?Budget, usually. ITB's are usually ludicrously expensive and offer an extremely poor $ to hp ratio, hence why they very rarely show up on anything that isn't pushing the limits of natural aspiration.
>>28696040>How good are they?They're fucking annoying
>>28696062>>28696088>>28696249>>28696441Fun fact: The Muster koach has 10 (TEN) individul carburetors. Imagine balancing that
>>28696088I LOVE MY 4 CARB BIKE :)(I hate my 4 carb bike)
>>28696249No the response comes from the throttle bodies being closer to the intake valve - so you don't have to fill the whole manifold up with atmo pressure before it gets to the engine, you only have to fill the intake port up with atmo pressure.
You guys know you can make all of your lives easier and still retain all the benefits of a purely mechanical system.
>>28696040Extremely cool. Not worth it on a street car, though. At least not one made for DD'ing.
>>28696760Linkages look cooler tho
Work best on 4cyl engines there is less to sync up and get running right Even better for rotaries where only 1 is needed per rotor
Ok but what are the actual torque curve benefits of ITBs?
>>28697041Lot of cars have them stock, just in a box. inline M3s Skylines etc just top of my mind.A plenum also helps with heat soak and fine tuning even more. I have a set of ITBs on my civic in a box, uninstalled since I just paid out the ass to tune it I'm kinda not in a rush to do all that nonsense again.
>>28697266That's the fun part, just swap trumpet lengths for your needs.
>>28698046>just swap trumpet lengthsWait, really?
>>28698419makes sense - it's how variable length intake manifolds keep long runners for low end torque, then open up the shortcut path for high end hp
>>28696040me and my brother fabbed up an intake manifold and bolted 750 gxr carbs on his suzuki samurai. after weeks of tuning and jet'ing it ran like a raped ape the sound was just pure sex. it already had a cam and headers and we tried that on the stock carb it was meh it really needed this setup to wake it up.he eventually ditched them and got a weber 32/36 he just got tired of constantly tuning and balansing carbs. not much loss in performance and no need to fiddle with it daily.
>>28696040Meme mod, good for noise
