Turbo mounted to one exaust port on a harley engine with a 4 inch long pipe from one port and a 24 inch long pipe for the other cylinder.
I have found most of these so called tuning shops for an application I am building from scratch so loyal to profit that I dare not even ask them any questions on this.
I am building a turbo conversion using a new generic turbo bought on ebay with an o.e. styled boost curve translated :I mean a broad power band and whatever A/R ratio is for good broad toque for the 1.5liter engine it was developed for. I also have a custom turbo with different impeller A/R ratios.. that I will play with later.
I do not own a dyno shop and a few pulls to adjust air fuel ratios are all I can afford.
So Now I get to my friggin point: On a 45°harley motor with factory long overlap camshafts and high flow heads, is it better to to add a plenum chamber to the side of the shorter exaust pipe that is connected to the port the turbo is hanging off to similate more pipe length and volume as a tuning aid. If I did this I would not affect actual laminar flow much because the majority of the gas would travel by it because it is on the side of the pipe not in the middle.
My idea for the concept is a chamber to add volume, but not have the gas travel through it which would obiously affect veocity/pressure. I do not know if it is even necessary.
I do understand that as Hugh mcInnes points out in his book that a plenum chamber is absolutely necessary on the intake side of this engine due to its firing cadence, as the compressor could not feed the second cylinder so soon after the first got its charge without plenum area of at least one cylinder.
This engine is a 1200 cc engine that makes an honest 85 rwhp naturally asperated. I figure on roughly double that at 1 bar of boost using alcohol/water thru a draw thru system. S And S super E carburator. The engine will dump nitro methane thru an auxillary fuel circuit for extra power.
Of course packaging and asthetics are main reasons formy choices of the above
I have found most of these so called tuning shops for an application I am building from scratch so loyal to profit that I dare not even ask them any questions on this.
I am building a turbo conversion using a new generic turbo bought on ebay with an o.e. styled boost curve translated :I mean a broad power band and whatever A/R ratio is for good broad toque for the 1.5liter engine it was developed for. I also have a custom turbo with different impeller A/R ratios.. that I will play with later.
I do not own a dyno shop and a few pulls to adjust air fuel ratios are all I can afford.
So Now I get to my friggin point: On a 45°harley motor with factory long overlap camshafts and high flow heads, is it better to to add a plenum chamber to the side of the shorter exaust pipe that is connected to the port the turbo is hanging off to similate more pipe length and volume as a tuning aid. If I did this I would not affect actual laminar flow much because the majority of the gas would travel by it because it is on the side of the pipe not in the middle.
My idea for the concept is a chamber to add volume, but not have the gas travel through it which would obiously affect veocity/pressure. I do not know if it is even necessary.
I do understand that as Hugh mcInnes points out in his book that a plenum chamber is absolutely necessary on the intake side of this engine due to its firing cadence, as the compressor could not feed the second cylinder so soon after the first got its charge without plenum area of at least one cylinder.
This engine is a 1200 cc engine that makes an honest 85 rwhp naturally asperated. I figure on roughly double that at 1 bar of boost using alcohol/water thru a draw thru system. S And S super E carburator. The engine will dump nitro methane thru an auxillary fuel circuit for extra power.
Of course packaging and asthetics are main reasons formy choices of the above
