aem short ram?
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From: NY
Re: aem short ram? (jonsteR)
Thanks for the info and offers but I was actually looking for a 3" short ram if the aem is only 2.75 then it wont do... Does anyone know which short intake system is 3" ?
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From: San Antonio, TX, USA
Re: aem short ram? (MrSmith)
preoiled
pretty much, any other intake is 3". Injen, DC, Comptech, etc. All intakes are going to have a reducer at the TB.
"the general rule is that the cross sectional area of the intake should be only 25% larger than the area of the TB using the largest inner diameter in the TB.
So for a circle, area = pi x radius squared
A. Assumptions:
If an LS' TB diameter is 58 mm ( or since 1 inch = 25.4mm, 58mm / 25.4mm = 2.28 inches ).
radius = 2.28 in. /2 = 1.14 in.
B. Calculate TB Area
Area = pi (= 3.14159) x 1.14 = 4.09 sq. in.
C. Calculate Intake Area
To get 25% more area than the TB's Area, you multiply the TB Area by 1.25
Intake Area = 1.25 x 4.09 sq in. = 5.12 sq. in.
D. Calculate Ideal Intake Radius
pi x intake radius squared = 5.12 sq. in.
intake radius = 1.28 in.
So the ideal intake diameter for the LS stock TB is 2.56 in.
So the 3 inch diameter ITR intake would be too big and slow flow velocity into the TB.
If you got the TB overbored to say 62mm then it should work.
In any Honda TB you can't go overboring any bigger than 4 mm over or for the LS the max is 58 + 4 = 62mm. The GSR stock TB is 60mm (max 64mm), ITR is stock 62mm (max 66mm). "
pretty much, any other intake is 3". Injen, DC, Comptech, etc. All intakes are going to have a reducer at the TB.
"the general rule is that the cross sectional area of the intake should be only 25% larger than the area of the TB using the largest inner diameter in the TB.
So for a circle, area = pi x radius squared
A. Assumptions:
If an LS' TB diameter is 58 mm ( or since 1 inch = 25.4mm, 58mm / 25.4mm = 2.28 inches ).
radius = 2.28 in. /2 = 1.14 in.
B. Calculate TB Area
Area = pi (= 3.14159) x 1.14 = 4.09 sq. in.
C. Calculate Intake Area
To get 25% more area than the TB's Area, you multiply the TB Area by 1.25
Intake Area = 1.25 x 4.09 sq in. = 5.12 sq. in.
D. Calculate Ideal Intake Radius
pi x intake radius squared = 5.12 sq. in.
intake radius = 1.28 in.
So the ideal intake diameter for the LS stock TB is 2.56 in.
So the 3 inch diameter ITR intake would be too big and slow flow velocity into the TB.
If you got the TB overbored to say 62mm then it should work.
In any Honda TB you can't go overboring any bigger than 4 mm over or for the LS the max is 58 + 4 = 62mm. The GSR stock TB is 60mm (max 64mm), ITR is stock 62mm (max 66mm). "
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From: FL
Re: aem short ram? (1fastGSR)
1fastGSR - I was using your equations and the only way that you should use a 3" intake would be if you had a 70mm TB. That doesn't make any sense to me. Why would Injen, DC, Comptech, and even AEM use a 3" on any B-series engine since none of them can even be bored out to 70mm. I may be thinking wrong so please enlighten me.
If you go backwards and use your equations the results make more sense:
3in * 0.75 = 2.25in (TB 25% smaller)
2.25 * 25.4 = 57.15mm (minimum TB diameter in mm)
This would explain why Injen, DC, and Comptech use 3" for all B-series engines.
If you go backwards and use your equations the results make more sense:
3in * 0.75 = 2.25in (TB 25% smaller)
2.25 * 25.4 = 57.15mm (minimum TB diameter in mm)
This would explain why Injen, DC, and Comptech use 3" for all B-series engines.
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