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Thread: '89 Turbo Supra build

  1. #61
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    Default Re: '89 Turbo Supra build

    I also adjusted the CPS to 10* BTDC. It was already pretty close but I didn't know for sure and I was hoping it might help my rough idle. No luck though so I'm still working towards figuring that out. I'm just now realizing I should be posting more pictures of this stuff!

    Another thing I've been working on is getting the factory electric fan relays to run my Mishimoto fans. I got rid of the mechanical fan for this shroud/fan combo and planned on using a Painless F5 controller I've had lying around for a while. After doing some research online I decided to give the oem wiring a chance first. I figured it was already there and I'd much rather use the existing electrical system than add more complexity to it. The only hesitation I had was not really knowing what temperature the oem fan switch turned on. So I cut off the connectors and wired the fans in. I grounded the connector going to the aux fan temp switch and both fans turned on! "Great!", I thought. So I started the car and let it warm up... and warm up some more... and hotter and hotter.. eventually got to the point where I wasn't comfortable with the temp and turned it off. I still don't know what temp it's set at but I could've just had a bad switch I guess? So anyway, I found a 200* switch from Summit for about $20 that fits into the thermostat housing. Installed it, put a spade connector on the wire harness and connected it to the new temp switch. I still need to test it to make sure it turns on at the right temp but I'm pretty confident this setup will work!

    While I'm at it, the other temp switch I removed is for the a/c fans. I'm assuming that switch just turned on the 3rd electric fan that was between the radiator and condenser right? So if I don't have that fan I don't need the switch hooked up? The wire that went to the switch is broken anyway so I'm hoping I don't need it and can just leave it unhooked... someone please correct me if I'm wrong though.


    Sent from my iPhone using Tapatalk
    1989 Turbo Supra, White Pkg - Build In Process
    7M-GTE w/stock turbo | Auto | Divorced/Recirculated Downpipe | Tanabe Touring Exhaust | DriftMotion Intercooler Kit
    Tokico Illuminas with H&R Springs | 18" CCW Knockoffs | waiting to be reassembled...

    2016 Tundra CrewMax TRD Pro
    TRD Intake | LED DRL/Fog Light Upgrade | Predator Pro Steps | Corsa Exhaust
    BFG A/TKO2 285/65R18 | OEM Audio+ | Camlocker | DIY Auto Headlights

    2009 Tundra D-Cab TRD Sport
    Lowered, supercharged and SOLD

    2004 4Runner V8 4WD - SOLD

  2. #62
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    Default Re: '89 Turbo Supra build

    Man, this has been a very slow process since day one!

    Had a chance to do some work on the car this afternoon... installed a set of oem injectors I picked up off the site here. After seeing how disgusting the old fuel tank was I thought the injectors were probably clogged and contributing to my rough idle and misfire issues. While doing that, I found the #5 and #6 injector connectors were mixed up and the one that should've been on #5 had a broken wire. So I was basically running on 4 1/2 cylinders... got the new injectors in and the wiring issues fixed up... I also installed a silicone intake "accordion" hose and swapped the DriftMotion/CXRacing intake piping back from the HKS style BOV to the OEM style. I should be starting it up tomorrow. Hopefully my misfire/rough idle issues are gone now and I can move on to the next problem(s)!


    Sent from my iPhone using Tapatalk
    1989 Turbo Supra, White Pkg - Build In Process
    7M-GTE w/stock turbo | Auto | Divorced/Recirculated Downpipe | Tanabe Touring Exhaust | DriftMotion Intercooler Kit
    Tokico Illuminas with H&R Springs | 18" CCW Knockoffs | waiting to be reassembled...

    2016 Tundra CrewMax TRD Pro
    TRD Intake | LED DRL/Fog Light Upgrade | Predator Pro Steps | Corsa Exhaust
    BFG A/TKO2 285/65R18 | OEM Audio+ | Camlocker | DIY Auto Headlights

    2009 Tundra D-Cab TRD Sport
    Lowered, supercharged and SOLD

    2004 4Runner V8 4WD - SOLD

  3. #63
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    Justin727's Avatar
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    GPT/BILOXI, Ms.
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    Default Re: '89 Turbo Supra build

    keep up the good work!

    "Obedience breeds discipline, discipline breeds unity, unity breeds power, power is life."
    Lexus ISF
    1993 1JZ SC300
    1994 6766

  4. #64
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    Default Re: '89 Turbo Supra build

    Thanks! Misfire is gone and it purrs like a kitten now. Also smokes like a freight train though

    I'm hoping it's just a blown turbo and/or valve stem seals. I have the original turbo on it now but have a replacement/upgrade ready to go on.

    There's also a possibility the valve stem seals are leaking causing some smoke. It smokes a LOT at startup and continues to smoke (not as bad) at idle. Could be a combination of turbo and valve stem seals I guess, I'm just hoping it's not piston rings or anything serious...


    Sent from my iPhone using Tapatalk
    1989 Turbo Supra, White Pkg - Build In Process
    7M-GTE w/stock turbo | Auto | Divorced/Recirculated Downpipe | Tanabe Touring Exhaust | DriftMotion Intercooler Kit
    Tokico Illuminas with H&R Springs | 18" CCW Knockoffs | waiting to be reassembled...

    2016 Tundra CrewMax TRD Pro
    TRD Intake | LED DRL/Fog Light Upgrade | Predator Pro Steps | Corsa Exhaust
    BFG A/TKO2 285/65R18 | OEM Audio+ | Camlocker | DIY Auto Headlights

    2009 Tundra D-Cab TRD Sport
    Lowered, supercharged and SOLD

    2004 4Runner V8 4WD - SOLD

  5. #65
    T-virus infected
    Justin727's Avatar
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    Default Re: '89 Turbo Supra build

    due to the age it could be a combination of both but what you describe I would lean towards the turbo first.

    "Obedience breeds discipline, discipline breeds unity, unity breeds power, power is life."
    Lexus ISF
    1993 1JZ SC300
    1994 6766

  6. #66
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    Dec 2013
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    Default Re: '89 Turbo Supra build

    Yeah, that's what I'm hoping for. I think the head was supposed to have been rebuilt before I got it. Will blown turbo seals cause a huge amount of smoke at startup though? I was thinking the smoking at idle would lean more towards the turbo seals but startup smoke was more likely to be valve stem seals??


    Sent from my iPhone using Tapatalk
    1989 Turbo Supra, White Pkg - Build In Process
    7M-GTE w/stock turbo | Auto | Divorced/Recirculated Downpipe | Tanabe Touring Exhaust | DriftMotion Intercooler Kit
    Tokico Illuminas with H&R Springs | 18" CCW Knockoffs | waiting to be reassembled...

    2016 Tundra CrewMax TRD Pro
    TRD Intake | LED DRL/Fog Light Upgrade | Predator Pro Steps | Corsa Exhaust
    BFG A/TKO2 285/65R18 | OEM Audio+ | Camlocker | DIY Auto Headlights

    2009 Tundra D-Cab TRD Sport
    Lowered, supercharged and SOLD

    2004 4Runner V8 4WD - SOLD

  7. #67
    Junior Member

    Join Date
    Dec 2013
    Location
    MS
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    59

    Default Re: '89 Turbo Supra build

    New turbo is on, that solved the majority of the smoking. There's still a little smoke at startup and very little at idle. Suspension has been the latest priority. I finally had my Illuminas installed along with a set of H&R springs. Energy bushings have been installed in the front along with all new alignment parts. Rear bushings are next. Also have a set of Whiteline sway bars going on... at this rate it'll be ready to drive in about 5 more years


    Sent from my iPhone using Tapatalk
    1989 Turbo Supra, White Pkg - Build In Process
    7M-GTE w/stock turbo | Auto | Divorced/Recirculated Downpipe | Tanabe Touring Exhaust | DriftMotion Intercooler Kit
    Tokico Illuminas with H&R Springs | 18" CCW Knockoffs | waiting to be reassembled...

    2016 Tundra CrewMax TRD Pro
    TRD Intake | LED DRL/Fog Light Upgrade | Predator Pro Steps | Corsa Exhaust
    BFG A/TKO2 285/65R18 | OEM Audio+ | Camlocker | DIY Auto Headlights

    2009 Tundra D-Cab TRD Sport
    Lowered, supercharged and SOLD

    2004 4Runner V8 4WD - SOLD

  8. #68
    Junior Member

    Join Date
    Dec 2013
    Location
    MS
    Posts
    59

    Default Re: '89 Turbo Supra build

    Suspension is 100% installed and aligned now! Illumina II shocks, H&R springs, KYB mounts, Whiteline sway bars, Energy Suspension bushings all over. Drove it around the parking lot a little... lots of squeaks and rattles to chase down eventually.

    Next up is a Mishimoto catch can and replacing the OEM oil cooler setup. I'm also going to be replacing the dash and checking the dash harness while it's apart to try to figure out why all of my gauges aren't working properly.


    Sent from my iPhone using Tapatalk
    1989 Turbo Supra, White Pkg - Build In Process
    7M-GTE w/stock turbo | Auto | Divorced/Recirculated Downpipe | Tanabe Touring Exhaust | DriftMotion Intercooler Kit
    Tokico Illuminas with H&R Springs | 18" CCW Knockoffs | waiting to be reassembled...

    2016 Tundra CrewMax TRD Pro
    TRD Intake | LED DRL/Fog Light Upgrade | Predator Pro Steps | Corsa Exhaust
    BFG A/TKO2 285/65R18 | OEM Audio+ | Camlocker | DIY Auto Headlights

    2009 Tundra D-Cab TRD Sport
    Lowered, supercharged and SOLD

    2004 4Runner V8 4WD - SOLD

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