john shackleford
Joined:
Nov 2015
northern kentucky usa
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12-04-2015, 03:51 AM
(This post was last modified: 12-04-2015, 03:52 AM by john shackleford.)
So. I have an 88 tc with tube header, t3/t4 hybrid. Stock ic afpr set at 40# with walbro 255 2.5" strait pipe plugs gapped to 30. Gillis set to 18# pulls full 18psi through 2ND gear but when 3rdgear comes up, about 10psi is all she's got? What am I missing here please and thank you!
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Not B Anymore
Joined:
Apr 2001
Nokesville, VA, USA
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Internal gate?
Brian Leavitt
'86 TC 5-Speed -- MS2x w/COP | 83 lb. injectors | T3/T4 50 Trim Stage 3 .63AR | Full 3" Exhaust - No Cat | Motorsport FMIC | Ranger Roller | Ported E6 | Walbro 255HP | Kirban | 20psi | 120-amp 3G | 8.8" 3.55 rear | '03 Cobra Wheels
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john shackleford
Joined:
Nov 2015
northern kentucky usa
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Yes internal came with turbo
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john shackleford
Joined:
Nov 2015
northern kentucky usa
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Guess what I don't understand is that I have full boost at the Same rpm in the previous gear so what is slowing the process?
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Jeff K
Joined:
Apr 2001
Milwaukee, WI
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You didnt say, but I assume the stock BCS is completely disconnected?
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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john shackleford
Joined:
Nov 2015
northern kentucky usa
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Yes it's disconnected. Knock sensor as well
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john shackleford
Joined:
Nov 2015
northern kentucky usa
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Also I have timing set at 10-12*
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Pete D
Joined:
Apr 2001
Northern OH
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Usually the concern is lower boost in 1st and maybe second and higher boost in the upper gears due to differences in engine loading.
It's possible that the WG is being blown open in the upper gears. You could test this by removing the WGA rod from the pivot arm and wiring the WG shut. Carefully test drive the car and see if the results change. BE ready to back off the accelerator quickly because it can over boost real fast.
Pete Dunham
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john shackleford
Joined:
Nov 2015
northern kentucky usa
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Thanks Pete i was heading in that direction already I'm just afraid of blowing her up lol. You'd think a turbo that big would come with a stronger wg. In fact I noticed the one on the ihi is bigger yet the turbo is smaller. Hopefully I'll have it nailed down by tomorrow and my highway power back.
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Pete D
Joined:
Apr 2001
Northern OH
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It may be a WGA problem. That's why i want to see what happens when it's taken out of the circuit.
Pete Dunham
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