Where should these hoses go? June 15, 2009, 07:47:43 PM Dont know if this is the correct area but I shall try here and hope. It is a 86 XR7 and as I am new to the wonderful world of turbo I hope these might be minor. In the first pic there is a solenoid on the rt wheelhouse and these 2 hoses come off it and were just tucked under the air filter hsg. The second unknown is also on the rt side. There is a hose coming off this check valve and it goes to no where. When I removed the fender tonight I found both these things. The hose off the check valve was just tucked thru and hanging in the fender area. As far as the car goes, I have only driven it a bit in the yard as it isnt licensed yet but everything seems to work as it should. The second of the ck valve pics I just folded back the hose to show its actuall size. Thanks in advance for any and all suggestions/help Quote Selected
Where should these hoses go? Reply #1 – June 15, 2009, 08:59:59 PM I think the line that leads to the firewall should attach to the brass vac/boost tee on the turbo compressor housing. I think one of the lines for the boost control solenoid also goes to the same tee on the compressor housing, but I can't remember where the other hose attaches. Quote Selected
Where should these hoses go? Reply #2 – June 15, 2009, 10:21:25 PM The two with the solenoid are for the factory boost control,your car must have an aftermarket manual boost controller???What kind of boost does it make,i think stock was around 14-15psi if it's stick,9-10psi if auto.Not sure about the second one with the check valve but it looks like the washer hose that goes to the resovoir. Quote Selected
Where should these hoses go? Reply #3 – June 16, 2009, 06:42:30 AM I'm 90% sure the line on the firewall (with the check valve) is a vacuum line, even though it looks like a washer hose. When I bought my turbo car, I had to mess around with all of those lines... a lot. That's the only reason I'm so confident, though I could certainly still be wrong.Also, the BCS had been bypassed on my car but there was no other boost control device installed; the turbo simply used the wastegate as a limiter. The ports on the compressor tee had been capped off when the BCS was bypassed. Quote Selected
Where should these hoses go? Reply #4 – June 16, 2009, 07:16:12 AM You need to run some kind of a boost controller or you will see unlimited boost(bad)as the wastegate will only open when you let off the throttle.Trace down the other end of that big hose and make sure your washer fluid sprays. Quote Selected
Where should these hoses go? Reply #5 – June 16, 2009, 10:16:29 AM Quote from: dominator;277998You need to run some kind of a boost controller or you will see unlimited boost(bad)as the wastegate will only open when you let off the throttle.Trace down the other end of that big hose and make sure your washer fluid sprays.Not necessarily.The stock BCS was just a route for the bleed orifice off the compressor housing. There was a main signal line to the WGA and then a bleed orifice which ran through the BCS to the turbo inlet when the BCS was activated. When the BCS was closed, the boost would be limited by the WGA stock setting, which was 10-11# for the T3's used on the Fords.As long as the main signal line is between the compressor housing and the WGA, the boost level will be limited to whatever the bleed orifice is calibrated for, which is most likely 15# on this car. The car will run a touch rich however as you would be bleeding off metered air.I've just run a hose in place of the BCS for a simple bleed bypass to avoid the metered air bleed.I'm having a hard time figuring out what that other line is. It could be the washer hose, or even for the cruise control, but I think that one enters through the firewall a bit lower. Quote Selected
Where should these hoses go? Reply #6 – June 16, 2009, 11:36:53 AM I took a few pics of my 85 xr-7 for ya. First pic is of the BCS hoses.The second two pics... There are two large vac hoses in that raceway. Both connect to the main vac tee on one end. On the other end, one goes to a tee, then a check valve and to two "thingies" mounted to the backside of the passenger strut tower (probably AC related, chime in gurus!). The second large hose has no check valve, but has a tee on the end (large tee, might have an integrated check valve). It has two small hard plastic vac lines, one goes through the firewall, the other runs along the left side, and under the intake hose and out through a hole into the fender area.CoogarXR Quote Selected
Where should these hoses go? Reply #7 – June 16, 2009, 11:39:34 AM DOH! after comparing the two sets of pics, you have those vac lines in your pics, so ignore the last two pics :hick:I went back out and looked again. The only other thing in that raceway (or near it) is the washer line. It comes from the washer bottle inside the right fender, then through a hole into the engine compartment. It jumps across into the right side of the raceway and runs about halfway through and turns up through a hole and tees to both washer nozzles. CoogarXR Quote Selected
Where should these hoses go? Reply #8 – June 16, 2009, 07:14:03 PM Well I checked the washers and yes they spray , I kind of thought they would since my washer bottle is mounted in the left fender and I am on the right side. I do have the small line going thru behind the fender, it goes to a small plastic vac tank. I think now that it might be turbo related, not sure if any of you know this car but this was yellow86coogr's old car. I am pretty sure he had said that it had a different turbo put on when the remanufactured engine was put in. I believe the guy that did the work is or was a member on here, guy with a bad ass Cougar from Kentucky, I think he was even on pinks. Anyways as always thanks for the help and the suggestions Quote Selected
Where should these hoses go? Reply #9 – June 16, 2009, 10:40:02 PM Quote from: Chuck W;278024Not necessarily.The stock BCS was just a route for the bleed orifice off the compressor housing. There was a main signal line to the WGA and then a bleed orifice which ran through the BCS to the turbo inlet when the BCS was activated. When the BCS was closed, the boost would be limited by the WGA stock setting, which was 10-11# for the T3's used on the Fords.As long as the main signal line is between the compressor housing and the WGA, the boost level will be limited to whatever the bleed orifice is calibrated for, which is most likely 15# on this car. The car will run a touch rich however as you would be bleeding off metered air.I've just run a hose in place of the BCS for a simple bleed bypass to avoid the metered air bleed.I'm having a hard time figuring out what that other line is. It could be the washer hose, or even for the cruise control, but I think that one enters through the firewall a bit lower.Hmm i didn't know that,is it the same on the 87-88 models,i didn't think they had a bleed. Quote Selected
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