By-pass valve; shoulda done it awhile ago

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

what's a by-pass valve?

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

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.

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.

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)

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).]

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)

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.

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).]

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.