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ISX

Over engineered boost regulator

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A few of you know I have been building a way to do boost without messing with a boost elbow. I really want to see a video of how the elbow acts but I got my setup done now so you all can see how ate up it is :lol: If I did it again I would just use those quick lock hose things rather than the uh "configuration" I have. So the boost hits the relief valve, the relief valve opens at 35, and wastegate opens. After boost pressure goes down, pressure in wastegate side of the line relieves through the check valve. http://www.mopar1973man.com//isx97/Truck%20Stuff/Ryan's%20Dodge/Modified%20Pics/Boost.jpg I don't have any 5 mile long hills around here and as a result I was just hitting 35 really fast and couldn't really tell how it was doing. So I put a load on it :hyper: Works just as I thought, doesn't open wastegate til it hits 35. EGT's are also much more controllable/lower. :cool:

http-~~-//www.youtube.com/watch?v=J9Y34LnIvrU

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I can't find anything on youtube showing how a boost elbow is. I just wonder how it compares to one :shrug:

---------- Post added 08-01-2010 at 06:15 PM ---------- Previous post was 07-31-2010 at 06:39 PM ----------

I wanted to see when exactly the wastegate was opening so I put a light in the cab and a switch from an old truck that actuates the brake lights, onto the wastegate. I had some trouble coming up with the switch and Guesswho512 directed me to the ingenious brake switch idea. So here is what I got so far.

http-~~-//www.youtube.com/watch?v=wmhl3mih3cQ

Thanks again Guesswho!

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Ok.. Where is the test run? :shrug:

Would you just hold on! Damnnnn :lol: I was in the chatroom with GW, bailed on him to go do it, had to email him the link showing how good it worked, and now I gotta finish it lol. Then I gotta go back to college so the test run vid will be made on my way, so give me 3 hours :rolleyes:

---------- Post added at 07:45 PM ---------- Previous post was at 06:28 PM ----------

Well here is the pre-run end result. Hooked 40psi to the AFC line that goes to the wastegate and actuated it. I'm very interested to see when it actually actuates on my way up.

I hit off the positive on the cigarette outlet (the one that turns off with the key) since it was on the upper part of the dash. Was kind of a pain to get the wire back down and out into the engine compartment. The negative is switched.. Figured if anything frayed I would rather it be the negative. Positive is only a 1ft run inside the dash so that should never be an issue.

http-~~-//www.youtube.com/watch?v=0LstvzKwBjE

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Ok.. Where is the test run? :shrug:

Ok... Now your done with both alpha and beta stags of design lets see a test run...:hyper:

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Ok... Now your done with both alpha and beta stags of design lets see a test run...:hyper:

Right here! I might have to temporarily make the gauge light the wastegate light so you can see where it lights up and everything. It dumps it right at 35 and reseats at about 30. I did fall in love with the light on my way, a guy was doing 40 in a 60 and it was already dark out and I threw it in 4th and punched it and was trying to control the blazing speed when the light came on, made me realize I must really be flying :lmao:

http-~~-//www.youtube.com/watch?v=v5y8nMZIAEc

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Looks good..So what kind of boost to you sustain if you hold WOT with the WG open?

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So I need to do some more engineering on it. Used the buzzer I ripped out of the dash so you guys could hear when the wastegate is open. There are hills here so you can see me hold it to the floor and leave it there after the wastegate opened. Once it opens that line has to get below 23psi, so if I don't let off to under 23, the wastegate will remain open since the check valve can't exhaust pressure. Need to do something about that. The last minute I was feathering it to try to keep the wastegate shut. :banghead:

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