North American Turbocoupe Organization



BOV? Some info
Import Killer Offline
Senior Member
#1
I've heard of BOVs, but what do they do exactly, how they go on, and do they help our cars?
1987 Turbocoupe
Painted sonic blue pearl
Ground effects w/S351 wing
17x9 Chrome Cobra Rs
255/45/ZR17 Kumho 712s
KYB suspension
MOMO shift knob and boot
K&N cone air filter, Gillis boost valve, T-3 turbo, ported intake and E6, A237 roller cam, MSD coil, Kirban FPR
Full 3" exhuast w/Ultra Flo muffler
Brute force clutch
White faced indiglo gauges
2 12" Rockford Fosgate subs and amp
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Pete D Offline
Administrator
#2
http://natoubb.turboford.org/Forum1/HTML/000773.html

Picture courtesy SteveX2

Do a search. This has been discussed alot.

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NATO Member. it's not a vice, it's an obsession
"The nice thing about each new day is nobody ever used it before" Barnaby Jones
88 TC X 2, 86 SVO, mods list at
http://www.turbotbird.com/showroom/pd_88tc.htm
Pete Dunham


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Nate K Offline
Posting Freak
#3
http://www.turbotbird.com/FAQPage/FAQpag...BPV_vs_BOV

BPV (ByPass Valve) - vents boost (high pressure air) back to the intake system before the turbo and after the air meter when you close the throttle under boost.

BOV (Blow Off Valve) - vents boost to the atmosphere when the throttle is closed.
NATO Member
3 - 88 TURBOCOUPES www.turbotbird.com/showroom/nk_88tc.html
90 Mustang LX 5.0L Notch

Cars I wish I still owned:
69 Coronet 440
70 Torino 351C
79 Bronco 351M/400 on 35's
79 Trans Am 403 (6.6L)
88 Cougar XR7 5.0L
93 F150 Flareside Mark III Custom 5.0L
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Import Killer Offline
Senior Member
#4
Thanks a lot, it sounds like a good idea. Also, i only boost 10psi in my TC. I got a 5speed and the fuel switch on Premium running 94 octane. My dad disconnected the boost regulator sensor thing and i didnt notice what i boosted before that (just got the car, he thought it allows it to boost all it wants) so if i put it back will it allow 15psi? or do i need a Boost Valve?

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1987 Turbocoupe, black, 5-speed, all options besides leather and moonroof, 180K+ and running strong, MOMO shift knob and boot, mustang shifter (easier to reach), K&N cone air filter with cold air induction, dynomax super turbo exhaust, tinted windows, white faced indiglo gauges, sony XPlod and Pioneer speakers, Pioneer CD player, painted the faded red molding lines blue, painted interior parts blue, neon dome light, aftermarket foglights, runs great.
1987 Turbocoupe
Painted sonic blue pearl
Ground effects w/S351 wing
17x9 Chrome Cobra Rs
255/45/ZR17 Kumho 712s
KYB suspension
MOMO shift knob and boot
K&N cone air filter, Gillis boost valve, T-3 turbo, ported intake and E6, A237 roller cam, MSD coil, Kirban FPR
Full 3" exhuast w/Ultra Flo muffler
Brute force clutch
White faced indiglo gauges
2 12" Rockford Fosgate subs and amp
Reply

Pete D Offline
Administrator
#5
Your 87 should boost 15 in 1 and 2nd. It's limited to 10 psi in the top three gears. Disconnecting the factory BCS can allow it to boost high, maybe too high. If your still only getting 10 psi with it disconnected, something isn't right. I would suggest you get a control valve and get it properly installed. Too much boost could blow a head gasket or worse.
Pete Dunham


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Import Killer Offline
Senior Member
#6
Well, I brought it to redline in first and second today and it only boosted 10psi. How accurate is that gauge? Cuz i dont feel like i have 200+hp (see mods in sig). I think the boost valve is the way to go, but my insurance went up and im broke, ill have to save up now.

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1987 Turbocoupe, black, 5-speed, all options besides leather and moonroof, 180K+ and running strong, MOMO shift knob and boot, mustang shifter (easier to reach), K&N cone air filter with cold air induction, dynomax super turbo exhaust, tinted windows, white faced indiglo gauges, sony XPlod and Pioneer speakers, Pioneer CD player, painted the faded red molding lines blue, painted interior parts blue, neon dome light, aftermarket foglights, runs great.
1987 Turbocoupe
Painted sonic blue pearl
Ground effects w/S351 wing
17x9 Chrome Cobra Rs
255/45/ZR17 Kumho 712s
KYB suspension
MOMO shift knob and boot
K&N cone air filter, Gillis boost valve, T-3 turbo, ported intake and E6, A237 roller cam, MSD coil, Kirban FPR
Full 3" exhuast w/Ultra Flo muffler
Brute force clutch
White faced indiglo gauges
2 12" Rockford Fosgate subs and amp
Reply

Dan E Offline
Posting Freak
#7
Boost Valves are fairly cheap...and, yes, it IS the way to go !

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Dan Eaves
88TC 5spd, Crower 5.5" Sportsman Rods, Short Wiseco Pistons bored .030" Over, Ported Head with Polished Combustion Chambers, Gutted & Polished Upper, Ported & Polished Lower, Polished T/B, Ported E6, SVO T3 .63AR Turbo, Bosch Bypass Valve, 3" DP w/No Cat, 2 1/2" DynoMax single cat back w/DynoMax Super Turbo Muffler, RR Cam, K&N in Fenderwell, Gillis Boost Valve, Centerforce I Clutch, Removed A/C, Polished Wheels, Polished Valve Cover, Polished Crank and W/P Pulleys, Walbro 255LPH HP Pump, Kirban Adj FPR, and the DAMN Heater Core is new too !

http://www.geocities.com/wot_turbo/WOT.html

NATO MEMBER (Vice Chairman...if it's a vice...I deal with it)
Dan Eaves
88TC 5spd Vermillion Red, Polished...everything...
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Pete D Offline
Administrator
#8
Import Killer, see this: http://natoubb.turboford.org/Forum3/HTML/000718.html

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NATO Member. it's not a vice, it's an obsession
"The nice thing about each new day is nobody ever used it before" Barnaby Jones
88 TC X 2, 86 SVO, mods list at
http://www.turbotbird.com/showroom/pd_88tc.htm
Pete Dunham


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