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Forum: 7M-GTE Engine Technical Discussion

Have a problem with your 7M-GTE? Technical tip or trick? Post here.

  1.   Sticky Threads  

  2. Sticky Thread Sticky: 3P's TCCS Disassembly/Analysis

    It's remarkable that after nearly 20 years the Toyota Computer Control System (TCCS) engine management computer used for the 7M remains a mystery as far as the public domain is concerned. Partly, this is because it uses a proprietary Denso microprocessor with zero official documentation available...

    Started by 3p141592654, June 2nd, 2008 12:22 PM
    24 Pages
    1 2 3 ... 24
    • Replies: 234
    • Views: 20,993
    August 30th, 2010 07:07 PM Go to last post
  3. Sticky Thread Sticky: Early Vs Late GTE Blocks

    Block differences are in the pics below click them to enlarge I've written what to look for on em, the light block is an 87T the Heavy is my New 93T from Toyota. Heavy http://ij.supramania.com/blocks00.jpg Light http://ij.supramania.com/blocks01.jpg Heavy...

    Started by IJ., June 7th, 2010 04:31 PM
    5 Pages
    1 2 3 ... 5
    7m-gte, 87t, block, blocks, click, differences, early, gte, head, heavy, jpg, large, late, light, oyota, performance, pics, suprama, supramania, ten, thread, thumb, toyo, toyota, written
    • Replies: 40
    • Views: 1,446
    August 24th, 2010 06:01 AM Go to last post
  4. Sticky Thread Sticky: Head Gasket thickness selection

    Seen this question asked on many occasions, here's the HG's for dummies version ;) 1) Stock HG = 1.37mm compressed 2) Stock head = 116mm deck to valve cover surface 3) Stock block = 198.5mm from deck to main bearing saddle If 2 and 3 are less that amount needs to be added to 1 to retain...

    Started by IJ., May 20th, 2009 06:33 PM
    5 Pages
    1 2 3 ... 5
    2mm, bearing, block, boost, clarify, compressed, cover, deck, gasket, head, head gasket, hks, ion, mai, main, order, saddle, selection, specs, stock, stopper, thick, thickness, timing belt, valve, valve cover
    • Replies: 48
    • Views: 5,827
    July 30th, 2010 08:58 AM Go to last post
  5. Sticky Thread Sticky: Tookwik's 7M C.O.P. ignition mod w/ stock electronics...pics and writeup

    OK fellas, I know not everyone cares about modifying things like this just for asthetics. If I had to pick a side, I would be with the function group rather than the form......but I'm not the guy that thinks you have to pick one or the other. I've been wanting to figure this out for quite some...

    Started by tookwik4u89, March 4th, 2007 01:26 PM
    35 Pages
    1 2 3 ... 35
    • Replies: 349
    • Views: 37,308
    July 18th, 2010 02:27 PM Go to last post
  6. Sticky Thread Sticky: Cam tuning info and guide

    On four stroke engines, it is important to realize that the cam rotates once for every two rotations of the crankshaft. Volumetric efficiency is based on cylinder fill. If a 2.0L engine is filled with 2.0L of an air/fuel mixture, we say its volumetric efficiency is 100%. If a 2.0L engine fills...

    Started by D-Dayve, February 7th, 2008 06:09 PM
    4 Pages
    1 2 3 ... 4
    • Replies: 36
    • Views: 6,752
    June 9th, 2010 06:46 AM Go to last post
  7. Exclamation Sticky Thread Sticky: Thinking About Using Spray Sealer on a MHG?...Might Want to Read This

    For you folks that have been on this site for a while, you know I’m a pretty big advocate of never using a spray sealer on a new MHG. I’ve based my argument against using it mostly on the various manufacturers recommendations…none recommend using a spray sealer. I’ve also used these two articles...

    Started by jdub, October 17th, 2006 08:35 PM
    6 Pages
    1 2 3 ... 6
    fix, king, links, mhg, mhgmight, pos, post, read, sealer, spray, thinking, worky
    • Replies: 59
    • Views: 10,997
    June 3rd, 2010 10:16 PM Go to last post
  8. Sticky Thread Sticky: Tech Posts

    Please guys before posting in this section take the time to confirm/verify your information. Read the entire thread to see what's been tried/suggested already. There are far too many posts "I've heard" "my buddy said" or just plain incorrect information posted as fact. This leads to a...

    Started by IJ., July 20th, 2008 01:46 AM
    posts, tech
    • Replies: 0
    • Views: 2,730
    July 20th, 2008 01:46 AM Go to last post
  9. Sticky Thread Sticky: MAFT Pro thread listing

    Thanks to supra_supra & loki2043, here is a compilation of useful threads that deal with information on the MAFT Pro. If you have another thread that you think should be included in here, feel free to PM me or any of the tech section mods with the URL and description of the thread, if we agree...

    Started by GrimJack, March 1st, 2007 01:06 AM
    listing, maft, maft pro, pro, thread
    • Replies: 0
    • Views: 6,375
    March 1st, 2007 01:06 AM Go to last post
  10. Arrow Sticky Thread Sticky: Dealing with the "oldschool" guys (or: How to ask smart questions..)

    Dealing with the "oldschool" guys (or: How to ask smart questions..) Introduction In the world of import automotive high performance, the kind of answers you get to your technical questions depends as much (or more) on the way you ask the questions as it does on the difficulty of developing...

    Started by Supracentral, June 1st, 2006 05:21 PM
    blow off, dealing, guys, mk3 supra, oldschool, pm's, questions, smart, technical questions
    • Replies: 0
    • Views: 5,234
    June 1st, 2006 05:21 PM Go to last post
  11.   Normal Threads  

  1. ct26. where does this go?

    my dumbass forgot to take pictures of the turbo and all the little pieces of where what goes where. just got it back from the turbo shop and this is the only thing i cannont find a home for...please lemme know this is the last piece till i can drive my car again since febuary when i blew it up...

    Started by 7mLove, August 30th, 2010 01:47 AM
    back, blew, car, chris, ct26, drive, dumbass, find, forgot, home, img, jpg, las, lemme, lit, ont, photobucket, pic, pictures, pieces, shop, thing, till, turbo, turbo a
    • Replies: 7
    • Views: 105
    Today 01:09 AM Go to last post
  2. Godspeed Intercooler Questions

    Alright so I got a Godspeed intercooler and i was wondering if anyone knew a good way to bypass the intake; the intercooler piping blocks the intake. Here is the link to the specific intercooler i have. I realize it shows pictures of the setup however the pics they show dont represent the...

    Started by MK3Cazz, Yesterday 01:22 PM
    blocks, bypass, godspeed, good, hey, info, intake, intercooler, link, main, page, pic, pics, pictures, piping, product, products, question, questions, realize, setup, shows, store, tha, wondering
    • Replies: 3
    • Views: 57
    Yesterday 11:32 PM Go to last post
  3. 4 plugs broken, can you tell me what these wires go to?

    Part of the harness that runs over the cam gears and comes out by the CPS has 4 broken plugs. Most of which attach somewhere on the thermostat elbow. Pretty sure they go to: 1) cold start injector time switch 2) temp sensor (gauge) 3) Oil pressure sensor 4) EFI Water temp sensor

    Started by MarkIII4Me, Yesterday 05:28 PM
    black, broke, broken, cam, cold, color, elbow, gauge, gears, harness, hey, injector, oil, part, plugs, pressure, runs, sensor, start, tach, temp, thermostat, time, water, wires
    • Replies: 2
    • Views: 26
    Yesterday 11:26 PM Go to last post
  4. auto transmission questions

    Does anyone know if there is an output shaft speed sensor relaying info to the ECU? If I change the rear gearing does the ECU need to be changed or recalibrated in any way?

    Started by teebone, Yesterday 04:30 PM
    auto, auto transmission, calibration, car, change, changed, ecu, gearing, hey, info, output, put, ques, questio, question, questions, rear, sensor, shaft, speed, trans, transmission
    • Replies: 2
    • Views: 20
    Yesterday 10:20 PM Go to last post
  5. ct-26 making "rattling" noise after freeway driving

    hey guys, been a while since ive been on here, got a mystery on my hands, i have almost finished my ma-70 turbo restore, and now...im noticing after i drive home from work, (if i uncover the baby to drive it) when im letting it idle down, i hear a rattling noise, now, i was told at one point it...

    Started by BOOSTEDSUPRA, June 22nd, 2009 06:29 PM
    2 Pages
    1 2
    answer, blow, blown, ct-26, ct26, driving, end, face, forge, freeway, head, heating, issue, machine, making, noise, oil, open, questions, rat, rattling, taking, turbo, update, work
    • Replies: 17
    • Views: 356
    Yesterday 08:41 PM Go to last post
  6. Fuel pressure Gauge mystery

    I have an aeromotive afpr, with a liquid filled gauge. and the gauge does not work. obviously its getting fp because it runs and drives fine. last night i pulled the gauge out and noticed there was like a cap inside the threaded portion of the gauge itself. i removed the cap hoping that my problems...

    Started by SupraSean, August 28th, 2010 11:21 AM
    aeromotive, afpr, behold, drives, filled, fuel, fuel pressure gauge, gauge, input, inside, low, night, pressure, problems, pulled, put, reading, removed, runs, side, tha, things, time, work, working
    • Replies: 4
    • Views: 38
    Yesterday 05:35 PM Go to last post
  7. Fouling Spark plugs and missing at idle NO CODES HELP!

    Hey Im new to this site I own a 90 7mgte, After Market Intercooler and piping, T-70 turbo, 50mm wastegate, forged interals, NA cams, 550cc injectors, and walbro 255 pump. The issue that Im having is I rebuild the motor a few months ago and the car keeps fouling out the plugs I think. Well at leat...

    Started by 90turbosupra, Yesterday 11:43 AM
    7mgte, advice, afm, boost, cams, car, check, coil, fuel, fuel pump, idle, ignitor, injectors, missing, motor, na cams, pack, problem, pump, rebuild, relay, start, turbo, walbro, wastegate
    • Replies: 3
    • Views: 38
    Yesterday 04:31 PM Go to last post
  8. 89 supra runs good when cold but like crap when hot.

    Hey I got an 89 supra turbo. It runs. Very good when cold. But once it warms up it starts boggin out. I noticed my coolent temp sensor is disconnected and the check engine light reads code 22 (Coolent temp sensor signal). I don't know where the wires go or what color they r cuz they were...

    Started by rap2chin, Yesterday 04:24 PM
    89 supra, car, check, code, cold, color, coolent, crap, disconnected, engine, good, hey, hot, light, runs, sensor, sig, signal, star, starts, supra, temp, tha, turbo, wires
    • Replies: 0
    • Views: 13
    Yesterday 04:24 PM Go to last post
  9. T61 Bolt on Turbo by Cx Racing

    Anyone running this turbo or know anyone that is? I checked the feed back & they SOLD 7 this month with + feedback left. I emailed 5 of them for there impressions of the turbo. Looks kinda like the SP61 bolt on but a bit smaller. Here is the link ...

    Started by Steve_N, July 22nd, 2009 11:09 PM
    55 Pages
    1 2 3 ... 55
    • Replies: 547
    • Views: 32,989
    Yesterday 03:28 PM Go to last post
  10. gauge light wiring

    I have the lotek gauge pod with a autometer II ultralite oil pressure and boost gauge that I am going to use once I swap the engine. I have a good ground for these and have already hooked that up. Where is a good place to tie into for the power source? Thanks.

    Started by hornet7288, September 1st, 2010 12:20 PM
    autometer, boos, boost, boost gauge, engine, engine., gauge, good, ground, hat, hooked, light, lotek, oil, oil pressure, place, pod, power, pressure, source, swap, tha, tie, ultralite, wiring
    • Replies: 5
    • Views: 35
    Yesterday 12:43 PM Go to last post
  11. Fuel Pulsation Damper & Turbo Oil Feed Question

    For the fuel pulsation damper - i'm guessing it's either 19 or 22mm, but without a set of calipers, i can't measure (i have no idea where they are). Also - i just CANNOT fathom how to remove the oil feed bolts for the CT26 - i've removed the union bolt next to the oil pressure sender without...

    Started by Kai, April 1st, 2010 10:37 AM
    2 Pages
    1 2
    2mm, bolts, calipers, case, ct26, damper, ext, feed, fuel, hey, how to, idea, issue, oil, pressure, pulsation, question, remove, removed, sender, set, socket, tha, top, turbo, wastegate actuator
    • Replies: 15
    • Views: 168
    Yesterday 08:43 AM Go to last post
  12. having problems with my 87 mkIII

    my supra wil not start. i have new head gasket, and put all new vac lines my question is what is the injection se up on my supra. im not gunna lie this is my first supra and i have the engine ready but it wont start at all it has fuel and compresion and air as well as spark :: angry ::

    Started by my7mgte527, August 25th, 2010 07:04 PM
    3 Pages
    1 2 3
    air, angry, art, engine, first supra, fuel, gasket, gun, head, head gasket, injection, lie, lines, mkii, mkiii, problems, put, question, ready, spark, star, start, supra, vac, won
    • Replies: 22
    • Views: 225
    Yesterday 08:25 AM Go to last post
  13. how hard is it to replace oil feed and return line to the turbo?

    well my lines to my turbo leak horribly. i also have a bad valve cover gasket.. i changed oil 2 days ago and its already really low. so now im not driving it till i get it fixed... im just trying to figure out how hard is it going to be to change the oil lines and what do i have to do to change...

    Started by bombinuass, March 30th, 2010 03:04 PM
    3 Pages
    1 2 3
    bad, car, coated, cover, driving, gasket, good, guys, hard, leak, leaking, line, lines, lol, low, oil, rear, rear main seal, replace, seal, test, tha, thickest, turbo, valve, valve cover, valve cover gasket
    • Replies: 22
    • Views: 325
    Yesterday 04:41 AM Go to last post
  14. Ct-26 Oil lines

    SO i bought the oil soft lines for the ct-26 from driftmotion the steel braided hoses i made sure everything was tight and for some reason they leak...am i suppose to put or something?...i got the crush washer on ... its leaking from under the turbo and its come from the hose the skinny one i...

    Started by noel, August 17th, 2010 11:24 PM
    bolts, bought, ct-26, driftmotion, gasket, guy, guys, hey, hoses, leak, leaking, line, lines, made, oil, problem, put, skin, soft, steel, suppose, tha, turbo, turbo a, washer
    • Replies: 6
    • Views: 76
    Yesterday 04:09 AM Go to last post
  15. Water/Meth and High boost coming. Time for tuning help/suggestions/experience.

    Thus far, I've done all of my own tuning. The car hasn't blown up so I would consider what I've done a success. ;) I want to continue this "Non-Blowing-Up" trend that I've started so I'm looking for some insight from the people who have been down this road. There are no reputable shops in my...

    Started by CajunKenny, August 21st, 2010 11:42 AM
    bee, blow, blown, boost, cam, car, fuel, gears, high, input, knock, list, matter, mods, pre, pretty, pro, pull, started, stock, system, time, timing, tuning, water
    • Replies: 6
    • Views: 129
    September 1st, 2010 11:38 PM Go to last post
  16. Pulling motor... quick question?

    Im pulling the motor and trans together right now! My friend misplaced the two brackets that go from the trans to the block, can I pull them out without the brackets on. I don't know if the 4 bolts that hold the trans and block together are strong enough! Thanks in advance!

    Started by JonnyZ(Socal), September 1st, 2010 07:02 PM
    advance, block, bolts, brackets, delete, don, friend, hat, hold, ion, mods, motor, or a, pulling, ques, questio, question, quick, strong, tha, trans
    • Replies: 1
    • Views: 50
    September 1st, 2010 08:15 PM Go to last post
  17. Arrow Need help installing Bee*R rev limiter! *solved*

    First of all, YES, I've read this thread: http://www.supramania.com/forums/showthread.php?74363-Bee*R-rev-limiter-Installation-Guide-(JZA70-specific) I found a pre 87 ECU pinout diagram. Connected the green to IGF and yellow to NE, as it said in the guide. +12V went to +B pinout and groud to...

    Started by scotty, August 10th, 2010 12:36 PM
    12v, bee, color, diagram, ecu, engine, gain, green, img, installation, installing, jza70, matter, pre, read, rev, rpms, set, settings, show, started, stock, thread, white, wire
    • Replies: 9
    • Views: 150
    September 1st, 2010 07:29 PM Go to last post
  18. Where to buy Crankshaft & Block?

    Im thinking about buying a 87 Toyota supra with a seized 7MGTE. but im thinkin what if the block or crank is very damaged? where could i buy another? not even ebay has them for sale!!!

    Started by Gota7MGTE, August 25th, 2010 10:26 PM
    2 Pages
    1 2
    "crankshaft" "block", 7mg, 7mgte, amp, ano, block, block or crank, buy, buying, cra, crank, crankshaft, damaged, ebay, eve, for sale, king, mgte, sale, seized, supra, thinking, toyo, toyota, toyota supra
    • Replies: 10
    • Views: 93
    September 1st, 2010 07:13 PM Go to last post
  19. AN adapter for valve cover (pic)

    What fitting is used to adapt the valve cover and block to AN? Hoping a 3/4 male can be tapped to inside and wont have to have one welded on. http://i44.photobucket.com/albums/f35/frank_luger/NashMan.jpg Pic courtesy of NashMan

    Started by FullNelson, August 29th, 2010 11:10 PM
    adapt, adapter, albums, block, cover, fit, fitting, frank, hoping, img, ing, inside, jpg, male, nashman, photobucket, pic, side, tapped, ting, valve, valve cover, welded, won
    • Replies: 2
    • Views: 95
    September 1st, 2010 06:38 PM Go to last post
  20. Unhappy need help asap...interior dash harness

    i replaced my dash harness from my 90 supra turbo but now the ignition plugs dont match up to the dash harness...there are two extra plugs and the the main connector is different, i think the harness i got is a Canadian harness....any one has a dash harness diagram for the Canadian model....or know...

    Started by tsparks01, August 28th, 2010 04:14 PM
    90 supra, asap, canadian, con, connector, dash, diagram, don, extra, harnes, harness, head, hell, ignition, interior, ion, mai, main, match, model, pass, plugs, replaced, supra, turbo
    • Replies: 1
    • Views: 34
    September 1st, 2010 04:13 PM Go to last post

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