

4th 5th gear boosting issue
#1
Posted 21 May 2017 - 09:52 PM
I have on 87 conquest engine runs good i fixed all the leaks alum radiator new injectors plugs and clips new valve seals and jet valves eliminated I re built the turbo w tdo5h 9 blade and small 16 g and ported 88 ecu upgraded new knock box coil and wires along w plugs rotor and cap timing is set at 10btdc
so here is my question? if i am getting up on the highway and punch it car boosts nice and strong to around 10 psi as soon as i go past 10 psi engine starts to over speed or something like the clutch doesnt hold boost will go up still but no go untill i drop boost to around 7 to 10 psi i am re building my extra engine w forged pistons and the works kinda wanna resolve this issue before my new engine goes in hope soon any input is apreciated and thank you i have a manual boost controler and blow off valve on the car w no leaks on any hoses boost goes up but rpms kinda stay behind after 10 psi 4th and 5th gear only like it overboosts and i dont need that to happen once to many times lol
#2
Posted 21 May 2017 - 11:26 PM
I would look into either finding a 240mm flywheel or look into the 225mm to 240mm conversion. Pretty sure that is a possibility using the 87 flywheel.
87, .030 over JE's, non jet head, small 16G. Delphi injectors. Quest owner since 2000.
#3
Posted 22 May 2017 - 08:06 PM
A 240 mm flywheel and clutch and you should be good to go.
Might want to check this out. Been a while since this has come out but might be worth a call.
http://www.starquest...showtopic=85751
B-71 87 TSI ~ RIP
Black 87 Starion ~ Mess SOLD!!!
Proud New 89 slightly Rusted Fiji Owner !!!
#4
Posted 22 May 2017 - 09:08 PM
#5
Posted 27 May 2017 - 09:32 PM
My clutch isn't anything special.
W18 Rocky White Starion
Hx35 Turbo,T3 Log Header,3inch dp,External Wastegate,Ported Everything.Air Conditioning!
Daily Driver
DIY http://sosmanuals.minagera.org/
Parts http://www.enginemac...ms/conquest.php
#6
Posted 09 June 2017 - 08:18 PM
#7
Posted 10 June 2017 - 06:20 PM
B-71 87 TSI ~ RIP
Black 87 Starion ~ Mess SOLD!!!
Proud New 89 slightly Rusted Fiji Owner !!!
#8
Posted 19 July 2017 - 07:57 PM
Here is some info on my newly built engine .020 bored and decked wiseco forged pistons reconditioned stock rods by ems crank checked and polished arp studs new marnal head ported and polished w ss stock size valves and sneider springs arp head studs at 90 Flbs stock size cam balance shafts are eliminated
#9
Posted 19 July 2017 - 08:07 PM
I am running a turbonetics also.
T3
60-1 HIFI
With a 57trim turbine.
Internal gate ported to almost 34 mm
63 A/R
Nice but I think I wan to try a GTX 3067 or GTX3071
B-71 87 TSI ~ RIP
Black 87 Starion ~ Mess SOLD!!!
Proud New 89 slightly Rusted Fiji Owner !!!
#10
Posted 20 July 2017 - 06:34 AM
W18 Rocky White Starion
Hx35 Turbo,T3 Log Header,3inch dp,External Wastegate,Ported Everything.Air Conditioning!
Daily Driver
DIY http://sosmanuals.minagera.org/
Parts http://www.enginemac...ms/conquest.php
#11
Posted 30 July 2017 - 09:36 AM
#12
Posted 03 August 2017 - 09:21 PM
#13
Posted 04 August 2017 - 03:46 PM
Much better tuning and stability of the tune. He can make it work with the stock
Ecu harness with little modification.
http://www.starquest...6
B-71 87 TSI ~ RIP
Black 87 Starion ~ Mess SOLD!!!
Proud New 89 slightly Rusted Fiji Owner !!!
#14
Posted 05 August 2017 - 05:46 AM
#15
Posted 07 August 2017 - 10:25 PM
#16
Posted 15 August 2017 - 06:17 AM
#17
Posted 15 August 2017 - 06:18 AM
#18
Posted 26 August 2017 - 07:17 AM
#19
Posted 26 August 2017 - 08:18 AM

2016-17 SCCA Solo Glen Region Champion in Street Modified. Going for a 3-peat this year ;)
87 Valencia Gold TSI, The new Project
My Feedback Link

#20
Posted 26 August 2017 - 10:01 AM
TD06 18G
TD06 20G
Don't go td05 or 05h.
The 06 is perfect for our cars.
Even the 06SL2 is good for our engine.
B-71 87 TSI ~ RIP
Black 87 Starion ~ Mess SOLD!!!
Proud New 89 slightly Rusted Fiji Owner !!!
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