North American Turbocoupe Organization



By-pass valve; shoulda done it awhile ago
Wags88TC Offline
Senior Member
#1
I finally put the BP valve(had the parts for 6 months)on the car. I don't know if it's any faster - but it sure is more "driveable". After I did the clutch(lightened the flywheel at the same time)the car seemed to be more "jerky" when shifting, that has gone away now!

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Steve Wagner
Nato member

88TC, 5 speed, StageII Star clutch w/ StageIII pressure plate,lightened flywheel, K&N in fender, gillis valve, 255lph Walbro, Kirban adj.FPR,Bypass valve, 3" exhaust from turbo to tip (high flow cat/ Dynomax Superflo muffler), A-pillar gauges(A/F & Boost), 16" Prime 5 spoke wheels(245/45ZR16 Bridgestones). Workin' on the front mount IC and some exterior mods
Steve Wagner
Nato member
84 SVO
88TC, 5 speed, StageII Star clutch w/ StageIII pressure plate,lightened flywheel, K&N in fender, gillis valve, 255lph Walbro, Kirban adj.FPR,Bypass valve, 3" exhaust (high flow cat/ Magnaflow muffler), A-pillar gauges(A/F & Boost), 16" ARE 5 spoke wheels 7" front 8" rear(225/50VR16 / 245/50VR16 Yokos'). Subframe connectors
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flyguy Offline
Junior Member
#2
what's a by-pass valve?

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1988 TC 5 spd. Chip, Gillis Valve, K&N.
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garycono Offline
Member
#3
I agree...I put a Bypass Valve on mine a few months ago and have really noticed a difference in the "driveability"....more interesting though is there is less engine noise at all throttle positions.

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88TC, 5 speed, 2.5" ATR exhaust, K&N, Cold Air Intake, Ported and Gutted Upper, Ported Lower, Ported E6, calibrated injectors, coolant filter,Aftermarket electric fan, Spearco Front Mount Intercooler.
Modified leather interior from a 2001 Monte Carlo, lowered 1" using H and R sport springs.Modified ram air plenum.Bosch By-pass valve.
88TC, 5 speed, 2.5" ATR exhaust, K&N, Cold Air Intake, Ported and Gutted Upper, Ported Lower, Ported E6, calibrated injectors, coolant filter, Aftermarket electric fan, Spearco Front Mount Intercooler.Modified leather interior from a 2001 Monte Carlo, lowered 1" using H and R sport springs.Modified ram air plenum.Bosch By-pass valve, MSD 6AL and Blaster coil ignition.
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Pete D Offline
Administrator
#4
See this thread: http://natoubb.turboford.org/Forum1/HTML/000648.html
and http://natoubb.turboford.org/Forum1/HTML/001237.html
and http://natoubb.turboford.org/Forum1/HTML/002093.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, Main TC with K&N, 3"DP to 2.5"duals through Dynamax, Ric valve at 17+ and disconnected KS. Elite Bodega 16" chrome wheels. Autometer pod w/ A/F and Vac/boost gauges.140 mph Motorsports Speedo New engine: Total Seal rings and TRW pistons, ported and polished head w/ cc'd chambers,1.59"exhausts, SS valves, gutted upper, knife edged lower, A-230 cam, Race Engineering Adj Cam Sprocket, Crowlers, ARP head studs, and rod bolts. Walbro 255 HP pump and Kirban adj FPR, T-3. Centerforce II, KB subs and jack rails.
Pete Dunham


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Jeff K Offline
Administrator
#5
Yup, every turbo car needs a BPV. THe drivability difference is amazing.

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Jeff Korn

88 Turbo Coupe: Intake and exhaust mods, T3 turbo at 20 psi, forced air intercooler, water injection, bypass valve, Ranger roller cam, subframes, etc., etc.. // 86 Tbird 5.0 (original owner): intake, exhaust, valvetrain mods, 100 HP nitrous, ignition, gears, suspension, etc., etc.... // 91 Escort: Bone stock winter car // 00 Windstar (wifes vehicle)
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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flyguy Offline
Junior Member
#6
makes that much of a difference eh? man, now i have to get one. the set up from tiny avenger looks nice and neat. i'll go with that unless someone has a better idea. pete d, thanks for the links. very helpful.

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1988 TC 5 spd. Chip, Gillis Valve, K&N.

[This message has been edited by flyguy (edited 04-19-2002).]
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Jeff K Offline
Administrator
#7
Flyguy... The TA kit uses a Bosch BPV that costs maybe $30 new, or can be found in turbo Volvos, Saabs, etc at the JY almost for free. Just fab up your own system to tap a 1" dia hose into the IC or the TB, and a 1" dia hose into the VAM to turbo hose, and you will be all set for MUCH less $$ than the TA kit.

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Jeff Korn

88 Turbo Coupe: Intake and exhaust mods, T3 turbo at 20 psi, forced air intercooler, water injection, bypass valve, Ranger roller cam, subframes, etc., etc.. // 86 Tbird 5.0 (original owner): intake, exhaust, valvetrain mods, 100 HP nitrous, ignition, gears, suspension, etc., etc.... // 91 Escort: Bone stock winter car // 00 Windstar (wifes vehicle)
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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flyguy Offline
Junior Member
#8
ok, thanks jeff. 00 Windstar (wifes vehicle)? wasn't that you i saw driving the mini-van around tiefenthaler park? [Image: biggrin.gif]

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1988 TC 5 spd. Chip, Gillis Valve, K&N.
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Nate K Offline
Posting Freak
#9
flyguy.... alot of us use the Ric Gillis Bypass Valve $39.00. Excellant quality, easy to adjust, easy to disassemble and clean, easy to upgrade spring for larger turbos, and best of all Ric is a great guy to deal with, stands behind his products 150%.
http://www.boostvalve.com/
http://www.boostvalve.com/pricelist.html
http://www.boostvalve.com/new.html replacement/new parts

[This message has been edited by Nate K (edited 04-19-2002).]

[This message has been edited by Nate K (edited 04-19-2002).]
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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flyguy Offline
Junior Member
#10
yeah, i have that already and it's great. maybe i've been hitting the crack pipe too much today but i'm fairly sure from everything i've been reading that the by-pass valve is different.

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1988 TC 5 spd. Chip, Gillis Valve, K&N.
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