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914 Monster |
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#1
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Newbie ![]() Group: Members Posts: 27 Joined: 14-April 08 From: Los Angeles Member No.: 8,924 Region Association: Southern California ![]() |
Can anybody please inform me about the 48 IDF weber carbs and which IDF weber carb provides more top performance?
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Jake Raby |
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#2
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Engine Surgeon ![]() ![]() ![]() ![]() ![]() Group: Members Posts: 9,394 Joined: 31-August 03 From: Lost Member No.: 1,095 Region Association: South East States ![]() |
One of the fastest ways to create an engine with a less than friendly usable RPM range is to over carb it.. The TIV is a velocity engine and doesn't need massive amounts of intake volume to make it's best power.
we make 200HP from less than 2.3 liters and 9.5:1 CR with only a 44mm IDF carburetor with a stock 36mm venturi. These engines have a TON of usable power and don't just perform well on the dyno, they have an RPM range thats usable from 2-6.5K RPM and thats the key to making a fast car. I don't use a 48mm carb till we exceed 2.7 liters, but this is with engines that feature my design thats greatly different from other tuners. the bottom line is big carbs perform best on big engines and unless you have the budget for a big engine the big carbs will just be hard to tune and make usable power at an RPM that the engine isn't generally operated at. That means their use is virtually worthless on anything of "sane" displacement. |
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