2.3 Turbo Mods November 24, 2007, 01:49:47 AM I have an '86 Cougar XR7 2.3 Turbo. I've been reading and searching for mods, and i'm pretty sure that i want to get a full 3" Stinger exhaust, and a K&N Filter for the VAM.My question is about a gillis boost valve?? i know that it controls the boost, but how do i install it/use it, and where can i get it. i am also looking at getting a blow off valve but it looks like i will need a special pipe to run from the turbo to the throttle body is that right?? And if so where can i get it, i Looked on Forced4.com but their descriptions didn't helpi'm not looking for junk parts, but budget is key. Thanks for your time and any help would be greatly appreciated Quote Selected
2.3 Turbo Mods Reply #1 – November 24, 2007, 07:28:55 AM 40bob.co sells the gillis and all other 2.3l parts youll need.Gillis comes with instructions,turn the boost upto 22psi install a k&n and have fun.NO need for a blow off unless you must have that woosh sound. Quote Selected
2.3 Turbo Mods Reply #2 – November 24, 2007, 08:32:38 AM Quote from: dominator;189416NO need for a blow off unless you must have that woosh sound.Or unless you really enjoy damaging your turbo bearings. Quote Selected
2.3 Turbo Mods Reply #3 – November 24, 2007, 01:42:58 PM ????? The turbo has an internal wastegate why do you need a blowoff, and it wouldn't be the bearing that got damaged by not having one it would be the impeller blades. Quote Selected
2.3 Turbo Mods Reply #4 – November 24, 2007, 01:58:02 PM Quote from: dominator;18941640bob.co sells the gillis and all other 2.3l parts youll need.Gillis comes with instructions,turn the boost upto 22psi install a k&n and have fun.NO need for a blow off unless you must have that woosh sound.I shelled my ihi by running 18psi with no blow off, every time I let off it boosted back into the turbo yanking the empeller forward. It eventualy wore enough to pull the impeller into the compresor housing and made a realy cool noise. Kind of like a cut off wheel on metal. It then dumped copious amounts of oil through the compresor and made my car smoke like a big rig!:D still boosted 15pis after that. Now I have a t-3 and a blow off, and run 20psi:burnout: no problems Quote Selected
2.3 Turbo Mods Reply #5 – November 24, 2007, 02:01:47 PM Quote from: dominator;189444????? The turbo has an internal wastegate why do you need a blowoff, and it wouldn't be the bearing that got damaged by not having one it would be the impeller blades.The stress on the impeller blades from building full boost and closing the throttle plate (shifting) is what stresses the bearings.That's the whole point of a bypass or blow-off valve - to vent that sudden surge of pressure.The wastegate simply limits the total amount of boost the turbo can make. When a certain pressure is met after the turbo, the actuator opens the wastegate flapper and diverts the exhaust away from the turbine.Sure, when you close the throttle under heavy boost, that actuator will certainly go full-bore into opening the wastegate, but there is no other connection between the two. It is not the same thing as venting off the sudden surge of pressure between the compressor and the throttle body.With that being said, I've read that a bypass valve is better for our cars than a blow-off valve. The bypass will allow the purged air to re-enter the intake, thus maintaining the correct air/fuel ratio after the VAM. Quote Selected
2.3 Turbo Mods Reply #6 – November 24, 2007, 02:18:08 PM Quote from: dominator;189444????? The turbo has an internal wastegate why do you need a blowoff, and it wouldn't be the bearing that got damaged by not having one it would be the impeller blades.lol don't waste your time ...i've bin down this road meny times with them lol i've tried to explan how a wastegate works and a carton of cigarettes later it still would'nt sink in.. i even made a bet to have someone disconect the shaft on the wastegate just to see how much boost the turbo would make under a full throttle load.. i had no takers on the bet.. Quote Selected
2.3 Turbo Mods Reply #7 – November 24, 2007, 04:41:23 PM You should also try to work in an Intercooler if your going go above stock boost. Quote Selected
2.3 Turbo Mods Reply #8 – November 24, 2007, 04:44:41 PM Quote from: Blown306Cougar;189448lol don't waste your time ...i've bin down this road meny times with them lol i've tried to explan how a wastegate works and a carton of cigarettes later it still would'nt sink in.. i even made a bet to have someone disconect the shaft on the wastegate just to see how much boost the turbo would make under a full throttle load.. i had no takers on the bet..On a .030 over rebuilt 2.3 with a .63 T3 it takes 5500 RPM to hit 5 psi! :hick: Quote Selected
2.3 Turbo Mods Reply #9 – November 24, 2007, 05:12:34 PM wow thanks guys im gunna look into the gillis thingi have to get the K&N filter b/c i dont think that tractor air cleaner is good on power lola BOV is probobly going to be one of the first mods that i get more for cheap insurance on the turbo as apposed to the power i'll will getnow do i have to run the pressurized air from the BOV back into the intake or can i just let it expell atmospherically??? and What kind of pipe do i need to run one on my car??? Quote Selected
2.3 Turbo Mods Reply #10 – November 24, 2007, 05:19:44 PM if you want to put the air back into the intake, you want a bypass valve, a BPV Quote Selected
2.3 Turbo Mods Reply #11 – November 24, 2007, 06:04:36 PM I would NOT attempt 22 psi without an intercooler. I think 15 psi would be my max there. Quote Selected
2.3 Turbo Mods Reply #12 – November 24, 2007, 08:48:03 PM Quote from: Blown306Cougar;189448lol don't waste your time ...i've bin down this road meny times with them lol i've tried to explan how a wastegate works and a carton of cigarettes later it still would'nt sink in.. i even made a bet to have someone disconect the shaft on the wastegate just to see how much boost the turbo would make under a full throttle load.. i had no takers on the bet..The wastegate has nothing to do with the shockwave of pressurized air that travels back down the intake tract towards the turbo when the throttle is closed while under boost (i.e. shifting). Wastegates are on the turbine (exhaust side) and the BPV/BOV's are on the compressor(intake) side.If you disconnect the shaft on the wastegate and assuming the WG flapper is not stuck, the turbo will build no boost as it will all be vented. Disconnect the signal hose from the compressor to the WGA, then you will have uncontrolled boost.BOV/BPV's are used to vent the pressurized air in the intake tract as mentioned above, not to control the boost level. In addition to possibly damaging the turbo, running longer IC pipes w/o one can result in "trailer hitching" at part-throttle/cruise situations as that air has no place to go.For stock 2.3T systems, or those with "mass air" metering, BPV's usually work the best as they keep the metered air in the system. Cars running a speed density set-up can make better use of the BOV's as there is not "metering" of the incoming air and the fuel mixture/demands are figured by the MAP sensor. Quote Selected
2.3 Turbo Mods Reply #13 – November 24, 2007, 10:09:41 PM Quote from: dominator;189444????? The turbo has an internal wastegate why do you need a blowoff, and it wouldn't be the bearing that got damaged by not having one it would be the impeller blades.:rolleyes: Quote Selected
2.3 Turbo Mods Reply #14 – November 24, 2007, 11:41:51 PM thanks chuckw....now to sound like a noob....ihave stock '86 set up, is that mass air meter or speed density. I though it waas too old to be MAF.And wtf does the VAM do, i know where it is but i dont know what it doesthanks for the help guys! Quote Selected
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