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Thread: Throttle Body Modification
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05-03-2006, 07:40 PM #1
Throttle Body Modification
Do you think that the 58mm is to much??
I looked around at the car TB's to gauge how the performance shops sized them.
The 1800cc Honda's use 65mm
65/1800=.036111mm per cc
So .036111x1500=54.16mm
These numbers seem to be based on a NA engine.
56mm would be safe but do you think 58mm with the SC would be any better??
Any thoughts would be appreciated!!
David
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05-03-2006, 09:19 PM #2
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05-03-2006, 09:20 PM #3
At 58mm I believe you would have to bore the intake manifold to match it. I'm running the 56mm TB with the "B" kit charger. Very nice throttle response
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05-03-2006, 09:33 PM #4
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05-04-2006, 03:43 PM #5
I am going to do the 58mm and if I loose any performance due to it being to large then that only means that I need more go fast parts
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05-04-2006, 06:42 PM #6
bore out the intake manifold inlet... y not?
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05-04-2006, 07:10 PM #7
If these things realy are Alpha-N tuning.... Changing the throttling device will have a huge effect effect on the bottom end tuning of the fuel maps. Depending on the map readings between the throttle and the turbo has a huge effect on the turbo output. Turbos hate to suck, they love to blow. Generally you want to keep the airflow in the throttle body in the 75 MPH range. The spread sheet I posted in another post covers some of this.
AW
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