Anyone here done this it does not look that hard. I was thinking of using a bosch style bypass with 1 inch heater hose. The tricky part is taping into the intake.
Well, you can't use a Bosch style bypass valve - when open there is no pressure to hold the valve open. You have to use the one sold by Eaton.92rohcp said:Anyone here done this it does not look that hard. I was thinking of using a bosch style bypass with 1 inch heater hose. The tricky part is taping into the intake.
Well, I thought the same thing and even bought a nice billet one. I even tried to hook it up even after I realized that it wouldn't work! Here's why it won't work:92rohcp said:Thanks for the great info. You did a very nice job. I am not clear though on why a standard bypass valve won't work. The bosch style uses vacuum to open it and hold it open, when the vac is gone and boost is present it closes. I tested mine on my vortech system. It should be the same principle.
Hehe - I thought of that for a minute too - but when the valve opened, a ton of air would rush past the throttle body into the engine. It would rev up, lean out and blow up! Well, probably not blow up, but you can see it would be a bad situation.92rohcp said:Wow you are good!. I thought I could stump you LOL... How about this I'm really thinking now! What if I was to vent the bypass before the throttle body instead of tapping into the KB inlet manifold I would vent into the inlet tube between the TB and MAF.
Yep, compressor is always compressing, even when no boost shows due to throttle body is not supplying enough air. Would you rather pull the air through the compressor or through a bypass valve? You did see the 17 degree reduction I saw at a cruising speed of 50 MPH (vacuum in intake) with bypass connected/disconnected. I had all the same thoughts as you when I was fabricating my bypass It's a normal process, you will see the light eventually :joy: Even the compressor maker (Opcon) gives you a sheet with a diagram of where to install the bypass - KB followed the directions correctly :lol:92rohcp said:Man I'm getting confused now how can the KB have vac on both side when you let off the gas. If this is true than why would you need a valve at all to bypass if there is no boost on the compressor side on decell. No need to devert right or wrong.
I have thought of that actually. I noticed that the bypass pipe was blazing hot even tough it is insulated from the hot metal by the hoses. I was going to cut in an old heater core and measure the results by doing back-to-back runs with and without bypass and I could compare delta T to back-to-back runs without the added cooling. Unfortunately I don't have infinite time to do these things :lol:. I did make a custom H2O/Methanol/Ethanol injection set-up - it really staves off the detonation and I think it even adds power when I use a 30%-35%-35% mix of Water-Methanol-Ethanol due to the added oxygenated fuel - though don't quote me on that, I'm still learning.92rohcp said:Cougar5.0 ever thought of bypassing that air through a small intercooler. I wonder if there would be benefit there. Maybe if the bypass system was a full inch it could have some benefit. I don't know just a thought bypass and intercool all in one.
I think you're going overboard! The heat from the engine and from the compressor making boost will still heat things up a lot - all the bypass cooling would do is lower the temps while cruising - this may help some under boost, but it may not be as much as you would think.92rohcp said:How do you control the water/meth at what boost and does it very or all at once.
On the bypass intercooler I found a small intercooler on ebay for $99 and I am thinking of using greddy type 1 1/2 in flange on the flat part of the discharge. I think black 1 1/2 inch heater hose would work to route to the intercooler mounted in the front bumper. I'm not sure it matters ether how long the hose. What do you think.
Yes I agree that it won't work like intercooling the boosted air. It has to have some positive effects though, just how much is the question. I think its worth a try as its only $120 shipped for the intercooler. Bypassing superheated air back into the compressor is not a good thing, I'm sure we all agree with that.Cougar5.O said:I think you're going overboard! The heat from the engine and from the compressor making boost will still heat things up a lot - all the bypass cooling would do is lower the temps while cruising - this may help some under boost, but it may not be as much as you would think.