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turbo or not?

Old 01-21-16, 04:17 AM
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Rednek
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Talking turbo or not?

12a bridge ported but otherwise stock,500 cfm eldabrock 4 barrel,verry stout running,but my engine builder said no turbo....id like at least a small one! reasons why i should or shouldnt from everyone would be great.
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Old 01-21-16, 06:49 PM
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How are you using the car? What kind of racing?
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Old 01-22-16, 04:42 AM
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s.c.c.a reginal only...and only driven in my neighborhood to play with and test against some of my neighbors better judgement !!! motor is 1st gen stock with some slight flaking an bridgeport with 500 cfm eldabrock 4 barrel....runs extreamly well in my 70 mg midget.

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Old 01-23-16, 10:32 AM
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Originally Posted by pacman1969 View Post
12a bridge ported but otherwise stock,500 cfm eldabrock 4 barrel,verry stout running,but my engine builder said no turbo....id like at least a small one! reasons why i should or shouldnt from everyone would be great.
the short answer is that it'll blow up.

the long answer is that it will blow up because. there is the obvious reason of just having the added power, more power = more wear on any engine. second, and more complexeratorily the bridgeport has a lot of overlap between the intake and exhaust, this is why it braps at idle. the turbo both adds an exhaust restriction, which is bad, but then also adds heat to the intake charge. this puts you in a place where detonation is more of a problem than it would ordinarily be, and while the rotary engine is pretty tough, detonation will kill it.

you'll find that most turbo engines, including the rotary turbos, have cam/port timing that have no, or very little overlap, this helps with the carryover of exhaust from exhaust to intake stroke, and it also reduces the engines sensitivity to exhaust backpressure.

this means that on a bridgeport turbo, you cannot have a small turbo. you therefore need a big one, and since big turbos flow a lot of air, it makes big power, and big power means you need the big IC and efi and all that other stuff.
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