Sean Story
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Joined:
Apr 2009
Laurel, Delawere
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i was driving my 88 tc and noticed the boost gauge was at 11 or so psi. i filled it up with premium and flipped the switch, i then was building 10 psi. something wrong with the turbo or is just a dumb ford gauge. ??????
S.STORY \ 88 TURBO (project 2.3) \ Laurel, Delaware 19956.
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tc86
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Joined:
Sep 2009
new jersey
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the stock boost gauge isn't that acurate
1986 soon to have fmic,3" exhaust,25 lbs of boost,la3 conversion,adjustable fuel pressure regulator,gillis
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Jeff K
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Joined:
Apr 2001
Milwaukee, WI
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Do you have the stock BCS system yet? If so, the solenoid may not be working correctly or the orifices in the compressor T are plugged.
Jeff Korn
88 Turbo Coupe: Intake and exhaust mods, T3 turbo at 24 psi, forced air IC, water injection, BPV, Ranger cam, subframes, etc., etc.
86 Tbird 5.0 (original owner): intake, exhaust, valvetrain mods, 100 HP N2O, ignition, gears, suspension, etc., etc.
11 Crown Vic Interceptor
14 Toyota Camry (wifes car)
95 Taurus GL Vulcan winter beater
67 Honda 450 Super Sport - completely customized
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Sean Story
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Joined:
Apr 2009
Laurel, Delawere
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can you elaborate a little more. does the switch make a noticeable difference when driving. what is a BCS system? what is a "orifices in the compressor T are plugged"??????. thanks for the help and input.
S.STORY \ 88 TURBO (project 2.3) \ Laurel, Delaware 19956.
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Pete D
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Joined:
Apr 2001
Northern OH
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BCS = boost control system
premium fuel switch
orfice
Insert some of these terms here and much will be revealed;
http://natomessageboard.com/cgi-bin/ulti...9;t=000165
Pete Dunham
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thumper
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Joined:
Jun 2001
Dexter, MO
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With the switch in premium, the boost is upped to about 15 psi (IIRC) and the timing adjusted by about 4*. I think the normal mode of the switch is 10 lbs of boost and regular timing.
I would say it is most likely that your gauge is off. I'd get a good boost gauge to test, and then install it. Or just get a reliable gauge and install it, period.
A.K.A. Corey Bennett
1988 TC: white, all options, 5-speed swap, K&N cone filter, "Ranger" roller camshaft, .60/.63 T3, NXS (Gillis-style) Boost Valve, Bosch BOV w/ check valve, Stinger 3" with axle dump (18" glass pack), 95A 3G
Some pictures: http://s639.photobucket.com/albums/uu111/cbennett4041/
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Jeff K
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Joined:
Apr 2001
Milwaukee, WI
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There should be a pretty big difference in performance between the reg and prem settings due to the 5 more psi boost allowed in the prem position (roughly 35 more HP in the prem position). Be aware that the stock BCS system only allows max boost (about 15 psi) over 4500 RPM in all gears (later build 88), and only in 1st and 2nd gears over 4500 RPM in 87 and very early build 88.
The best thing you can do for your car is dump the entire stock BCS system and get a Gillis type pressure relief valve to control max boost.
Jeff Korn
88 Turbo Coupe: Intake and exhaust mods, T3 turbo at 24 psi, forced air IC, water injection, BPV, Ranger cam, subframes, etc., etc.
86 Tbird 5.0 (original owner): intake, exhaust, valvetrain mods, 100 HP N2O, ignition, gears, suspension, etc., etc.
11 Crown Vic Interceptor
14 Toyota Camry (wifes car)
95 Taurus GL Vulcan winter beater
67 Honda 450 Super Sport - completely customized
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Sean Story
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Joined:
Apr 2009
Laurel, Delawere
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ok thanks guys.
S.STORY \ 88 TURBO (project 2.3) \ Laurel, Delaware 19956.
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xcrunnerbd
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Joined:
Oct 2006
Woodland, MI, USA
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I'm guessing you still have the stock BCS.. Look under the hood on the front of the passenger side fenderwell. There should be a black cylinder with some hoses and wires coming off it. That is the BCS.
These are cheapies not known for longevity. What Jeff K said - dump it.
Project 13 sec. / 30mpg in '88 TC 5Speed : 15.91@89mph / 32+ mpg
On The Car: KN cone, 2-stage Gillis@ 15psi wired to fuel switch, Kirban AFPR @ 39psi, Walbro 255 HP FP, 130A 3G Alt., Full 3" Stinger Exhaust incl. cat. no muffler,
Shelf: .48 T3, ported E6, BPV
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