What inlet pipe diameter for 300bhp?
#1
In the next few weeks/months/years i will be doing the front entry conversion on my 93WRX (TD05). This will entail getting a custom turbo inlet pipe being made up from Samco tube and bits of ali tube. I'll be fitting a catch tank (VTA) for the breathers, i have a VTA dump valve and as such the only branch needed to come off the inlet is for the ISCV. So.... the question is how to i get from the MAF housing (80mm) to the turbo inlet (about 55-57mm from my rough measurments). I had planned getting a Samco straight reducer from the turbo to an ali t piece (for the ISCV) to a Samco 90 degree bend to another straight reducer to the MAF housing.
The questions are.... what diameter do i need the pipes to be in order to flow enough air for 300bhp (im not power hungry). And what size will fit past the later power steering pump?
Any suggestions would be appreciated.
Tony.
The questions are.... what diameter do i need the pipes to be in order to flow enough air for 300bhp (im not power hungry). And what size will fit past the later power steering pump?
Any suggestions would be appreciated.
Tony.
#2
if you are making up an inlet pipe I would go for a 61mm front feed instead of the standard 55mm.you should not have any problems with breaking 300bhp with either.I chose just to stay standard 55mm inlet on mine (MY00 UK)because I only want a max of 320bhp.
I do not know how much diy you want to do but Mark at Lateral has a 61mm TD05 cover in stock,on an exchange basis and for the type of finish you get,I would not bother doing it myself.he is also the cheapest for the fuel pump and fuel pressure regulator you will need,if not changing injectors.
edit to make sense
[Edited by T-uk - 1/23/2003 12:23:41 AM]
I do not know how much diy you want to do but Mark at Lateral has a 61mm TD05 cover in stock,on an exchange basis and for the type of finish you get,I would not bother doing it myself.he is also the cheapest for the fuel pump and fuel pressure regulator you will need,if not changing injectors.
edit to make sense
[Edited by T-uk - 1/23/2003 12:23:41 AM]
#3
I always planned on gettin just the compressor housing from Mark.... didn't know it was a 61mm (OD?) outlet tho. Samco only do 60 and 63mm (ID), i guess i use 60mm then????
So i could have 60mm all the way from the turbo to the 90deg bend and then get some sort of straight reducer from the MAF (80mm to 60mm)... althought Samco don't do this???? Maybe an ali reducer with a 80mm Samco coupling???
Would this be ok?
Tony.
So i could have 60mm all the way from the turbo to the 90deg bend and then get some sort of straight reducer from the MAF (80mm to 60mm)... althought Samco don't do this???? Maybe an ali reducer with a 80mm Samco coupling???
Would this be ok?
Tony.
#4
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Join Date: Nov 2001
Location: Leeds - It was 562.4bhp@28psi on Optimax, How much closer to 600 with race fuel and a bigger turbo?
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Page 62 Maximum Boost..
Power = 400bhp airflow = approx 600cfm tube = 2.5"
2.5" will flow 600cfm without resonable drag..
[Edited by David_Wallis - 1/23/2003 3:59:55 PM]
Power = 400bhp airflow = approx 600cfm tube = 2.5"
2.5" will flow 600cfm without resonable drag..
[Edited by David_Wallis - 1/23/2003 3:59:55 PM]
#6
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Join Date: Nov 2001
Location: Leeds - It was 562.4bhp@28psi on Optimax, How much closer to 600 with race fuel and a bigger turbo?
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Yeah... Me.
Mail me offline, and email me a rough sketch of what it needs to look like..
Or I can make something that will bolt to the back of the maf if you prefer..
David
Mail me offline, and email me a rough sketch of what it needs to look like..
Or I can make something that will bolt to the back of the maf if you prefer..
David
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