Draw through turbo and carb questions
04-29-07, 01:28 PM
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Draw through turbo and carb questions
Well I have a cartech draw through turbo kit. It is recommended to use a holley 390 cfm holley because "it does not need anything more" my question is does it hurt to go bigger? It seems that a 390 is no cheaper then bigger carbs.
04-29-07, 09:49 PM
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since your gonna be running it draw thru then you probably wouldn't want to step up to a bigger carb.. I have always run blow-thru's and have made enough power using the stock Nikki. so a 390cfm is probably about right.
i run a 750cfm on my 13b turbo
again tho... blow-thru. draw thru sucks!!!!!!! (literally lol)
i run a 750cfm on my 13b turbo
again tho... blow-thru. draw thru sucks!!!!!!! (literally lol)
05-01-07, 12:40 AM
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well, i sort of need to retract my statement... because i have used 650cfm's on my stock port turbo 12a's before 
the key is knowing these carbs inside and out... get a proform mainbody with air bleed adjustments and metering blocks with emulsion adjustments. you'll want a good 4150 model double pumper with large squirters up top and aggressive pump cams... drill out the PVCR's and switch the power valve over so that it is boost referenced. I have mine come online around 5psi.
negatives of running large carb improperly setup on a small motor: bad throttle response, very rich tune, laggy response, loss of power, etc....
the key is knowing these carbs inside and out... get a proform mainbody with air bleed adjustments and metering blocks with emulsion adjustments. you'll want a good 4150 model double pumper with large squirters up top and aggressive pump cams... drill out the PVCR's and switch the power valve over so that it is boost referenced. I have mine come online around 5psi.negatives of running large carb improperly setup on a small motor: bad throttle response, very rich tune, laggy response, loss of power, etc....
05-02-07, 01:41 PM
#5
Originally Posted by No_Rotor_RX7
well, i sort of need to retract my statement... because i have used 650cfm's on my stock port turbo 12a's before the key is knowing these carbs inside and out... get a proform mainbody with air bleed adjustments and metering blocks with emulsion adjustments. you'll want a good 4150 model double pumper with large squirters up top and aggressive pump cams... drill out the PVCR's and switch the power valve over so that it is boost referenced. I have mine come online around 5psi.
negatives of running large carb improperly setup on a small motor: bad throttle response, very rich tune, laggy response, loss of power, etc....
the key is knowing these carbs inside and out... get a proform mainbody with air bleed adjustments and metering blocks with emulsion adjustments. you'll want a good 4150 model double pumper with large squirters up top and aggressive pump cams... drill out the PVCR's and switch the power valve over so that it is boost referenced. I have mine come online around 5psi.negatives of running large carb improperly setup on a small motor: bad throttle response, very rich tune, laggy response, loss of power, etc....
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