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 Post subject: Re: Toyota Mark II twin Turbo
PostPosted: Tue Apr 29, 2014 8:21 am 
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Joined: Sat Feb 05, 2011 5:53 pm
Posts: 503
Location: Bay Area, California
Your car's ECU is a neural net processor, a learning computah.

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 Post subject: Re: Toyota Mark II twin Turbo
PostPosted: Tue Apr 29, 2014 11:33 am 
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Joined: Mon Jan 10, 2011 1:00 pm
Posts: 243
Location: Texas
Cool MarkII, axle code says G series, sweet...

Have you checked the distributor timing and TPS adjustment?

Where are you in TX?

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 Post subject: Re: Toyota Mark II twin Turbo
PostPosted: Tue Apr 29, 2014 8:33 pm 

Joined: Tue Nov 08, 2011 2:19 pm
Posts: 152
Location: Austin Texas
jzcelica wrote:
Cool MarkII, axle code says G series, sweet...

Have you checked the distributor timing and TPS adjustment?

Where are you in TX?



Thanks JZCelica,

timing checked and adjusted....response got better.

TPS inspected anf found to be the the factory set pesition but voltage output not verified.

I really believe the MAF needs some attention so that my next move

Im located in the Austin area....DelValle to be exact,


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 Post subject: Re: Toyota Mark II twin Turbo
PostPosted: Fri May 02, 2014 5:47 am 
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Joined: Mon Jan 10, 2011 1:00 pm
Posts: 243
Location: Texas
Is it a flapper door or hot wire style?

The flapper door style can be adjusted. You have to pop open the black plastic cover, and inside it has a sawblade looking wheel that you can turn either direction a notch or two. I can't remember which way is lean and rich though. I bet you can look up some threads online about adjusting 7M AFMs.

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 Post subject: Re: Toyota Mark II twin Turbo
PostPosted: Fri May 02, 2014 5:48 am 
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Joined: Mon Jan 10, 2011 1:00 pm
Posts: 243
Location: Texas
If it looks like someone has been into it and adjusted it in the past, it may be way off.

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 Post subject: Re: Toyota Mark II twin Turbo
PostPosted: Fri May 02, 2014 5:53 am 

Joined: Tue Nov 08, 2011 2:19 pm
Posts: 152
Location: Austin Texas
JZcelica...thanks for the advice!!
its a flapper door type sensor, i have been playing with the idea of removing the cover and messing with it...i think ill try that this weekend and post the results.


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 Post subject: Re: Toyota Mark II twin Turbo
PostPosted: Sat May 03, 2014 10:29 am 
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Joined: Mon Jan 10, 2011 1:00 pm
Posts: 243
Location: Texas
If youre going to adjust the AFM, be sure and do it with a voltage meter, so you can set it to the correct output voltage to the ECU. It's probably 0 - 5v variable.

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 Post subject: Re: Toyota Mark II twin Turbo
PostPosted: Mon May 05, 2014 7:44 am 

Joined: Tue Nov 08, 2011 2:19 pm
Posts: 152
Location: Austin Texas
jzcelica wrote:
If youre going to adjust the AFM, be sure and do it with a voltage meter, so you can set it to the correct output voltage to the ECU. It's probably 0 - 5v variable.


Got it!. thanks.


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 Post subject: Re: Toyota Mark II twin Turbo
PostPosted: Fri May 30, 2014 7:23 am 

Joined: Tue Nov 08, 2011 2:19 pm
Posts: 152
Location: Austin Texas
opportunity is knocking again....so i am listing the Mark II for sale in the hope that i can take advantage of the opportunity...Please PM or call/text me (512-767-0644) if anyone has interest in the car.


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 Post subject: Re: Toyota Mark II twin Turbo
PostPosted: Fri May 30, 2014 10:05 am 
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Joined: Wed Mar 21, 2007 11:47 am
Posts: 497
Location: Pac NW
10psitx wrote:
Where im at so far


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ill-minded wrote:
The wheels are SSR Longchamp XR-4Z, by the way. :)

The build plate should state whether it has an 8" (G series) diff as well. It's located next to the gearbox code usually.


seems like you have a G final drive...

I've done EXTENSIVE port work on 4AGEs (very similar to 1GG)... if you come across a spare head I'll be happy to make it flow better

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 Post subject: Re: Toyota Mark II twin Turbo
PostPosted: Fri May 30, 2014 11:19 am 

Joined: Tue Nov 08, 2011 2:19 pm
Posts: 152
Location: Austin Texas
oldeskewltoy wrote:
10psitx wrote:
Where im at so far


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ill-minded wrote:
The wheels are SSR Longchamp XR-4Z, by the way. :)

The build plate should state whether it has an 8" (G series) diff as well. It's located next to the gearbox code usually.


seems like you have a G final drive...

I've done EXTENSIVE port work on 4AGEs (very similar to 1GG)... if you come across a spare head I'll be happy to make it flow better



Thanks man...its Very tempting, but i'm trying to sell it.


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 Post subject: Re: Toyota Mark II twin Turbo
PostPosted: Tue Jul 01, 2014 9:15 am 

Joined: Tue Nov 08, 2011 2:19 pm
Posts: 152
Location: Austin Texas
The radiator had a leak on the top tank so i ordered one for a Cressida...i havent installed it yet hope fully this weekend. I haven't worked the car in a few months....i start it drive it to the end of my street and back, so this weekend its getting some love!!


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 Post subject: Re: Toyota Mark II twin Turbo
PostPosted: Wed Jul 16, 2014 9:48 am 

Joined: Tue Nov 08, 2011 2:19 pm
Posts: 152
Location: Austin Texas
The A/C in the house needed to be serviced so i took some time off from work to meet the A/C tech today, while waiting i decided to change the Radiator, well took me all of 15 mins to pull everything but after seeing the condition of the rad hoses i thought it best to replace them as well....so i will order some silicone ones. I removed the MAF a few days ago to send to Cali for service so the "rubber" intake tube was in the way of the lower rad hose, i sorta twisted it to gain some space and it broke right where the clamp is on the turbo intake pipe, i need to replace that as well.... Some pics....

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Broken Intake tube

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 Post subject: Re: Toyota Mark II twin Turbo
PostPosted: Mon Feb 09, 2015 1:19 pm 

Joined: Tue Nov 08, 2011 2:19 pm
Posts: 152
Location: Austin Texas
Its been quite awhile since i touched the car, the last thing i did was replace the radiator, hoses, installed the reconditioned MAF and checked the brakes. That was back in August last year, since then absolutely nothing done, issue did diminish a little bit, but its still sluggish. I got the car insured last week so this week its getting inspected and i'll start driving it around..... hopefully the ECU/engine will start responding to the miles. I have one project to finish and then my time will be dedicated to getting this car running properly....


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 Post subject: Re: Toyota Mark II twin Turbo
PostPosted: Sat Feb 14, 2015 4:15 am 

Joined: Fri May 13, 2011 4:47 pm
Posts: 101
Location: Queensland Australia
Hey, mate, I'm pulling the front suspension out of my MX73 on monday to fit new strut tops and was wondering what the sizings are on the fasteners? I just want to make sure I have all the tools to do the job. Thanks in advance.

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 Post subject: Re: Toyota Mark II twin Turbo
PostPosted: Sat Feb 14, 2015 8:45 am 
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Joined: Mon Jul 30, 2012 4:36 pm
Posts: 431
Location: Coarsegold California (around fresno)
Nice car. Good to hear you got it running better. I would drive it and put a few tanks through it. It was probably sitting for a while before you got it. Get the old fuel out of there before running it too hard.

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 Post subject: Re: Toyota Mark II twin Turbo
PostPosted: Tue Feb 17, 2015 7:51 am 

Joined: Tue Nov 08, 2011 2:19 pm
Posts: 152
Location: Austin Texas
dchil15 wrote:
Hey, mate, I'm pulling the front suspension out of my MX73 on monday to fit new strut tops and was wondering what the sizings are on the fasteners? I just want to make sure I have all the tools to do the job. Thanks in advance.



Sorry bud, i didn't have a chance to check the thread sooner but i assume you already got the nuts off, in any event they are 14mm on my car. thanks!


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 Post subject: Re: Toyota Mark II twin Turbo
PostPosted: Tue Feb 17, 2015 8:02 am 

Joined: Tue Nov 08, 2011 2:19 pm
Posts: 152
Location: Austin Texas
Skellington wrote:
Nice car. Good to hear you got it running better. I would drive it and put a few tanks through it. It was probably sitting for a while before you got it. Get the old fuel out of there before running it too hard.



Thats the plan so far.


I got it inspected and i got a temporary tag for it so i can drive it around....i've had this car going on a year (almost) and have been taking it on short trip within my neighborhood...only issue, the hesitation. I get the car legal and the water pump starts to wobble seems the bearing is done and the impeller is contacting the housing, i need to replace it. The car just keeps on giving, oh! for the joys of owing cool car!

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 Post subject: Re: Toyota Mark II twin Turbo
PostPosted: Tue Feb 24, 2015 7:46 am 
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Joined: Mon Jul 19, 2010 12:52 am
Posts: 8
Location: Waterloo, Sydney, Australia
Woah never thought id see a Mark II Twin Turbo in Texas ... So cool, i like to listen to the local radio from there in the south :)

The engine troubles sound like typical old-tired (but still running and never dying) toyota engines from the 80s. All my old 5M's were like this (5ME, 5MGE) and plenty of 7M's that i saw were like this... Just not fun to drive because its lost out so much power, and its going to be a real headache to trace & trawl every little problem to eliminate & freshen it up. Toyota engines are hard to kill though -- ive heard of a 5M running even with a hole in the head??? It probably needs a full rebuild, sold out of japan as a bone stock original car that some family stopped maintaining. But the car itself is something special, id highly reocmmend drop in a 2JZ-GE or 1JZ-GTE and wire it up --- you will spend way more in $$ than the costs of converting, if you do chase the 1G-GTE to be fresh. just my 2c, i went the JZ route when i could so i could enjoy my 80s ride always.

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 Post subject: Re: Toyota Mark II twin Turbo
PostPosted: Tue Feb 24, 2015 9:36 am 

Joined: Tue Nov 08, 2011 2:19 pm
Posts: 152
Location: Austin Texas
ivandude wrote:
Woah never thought id see a Mark II Twin Turbo in Texas ... So cool, i like to listen to the local radio from there in the south :)

The engine troubles sound like typical old-tired (but still running and never dying) toyota engines from the 80s. All my old 5M's were like this (5ME, 5MGE) and plenty of 7M's that i saw were like this... Just not fun to drive because its lost out so much power, and its going to be a real headache to trace & trawl every little problem to eliminate & freshen it up. Toyota engines are hard to kill though -- ive heard of a 5M running even with a hole in the head??? It probably needs a full rebuild, sold out of japan as a bone stock original car that some family stopped maintaining. But the car itself is something special, id highly reocmmend drop in a 2JZ-GE or 1JZ-GTE and wire it up --- you will spend way more in $$ than the costs of converting, if you do chase the 1G-GTE to be fresh. just my 2c, i went the JZ route when i could so i could enjoy my 80s ride always.



Id be more that willing to swap in a JZ in the car, espically as this past weekend i moved the car and the water pump locked up. I have too many other projects to finish and this will be on the waiting list for a while, the car IS cool though and as far as i can tell its 1 of 3 here in the US. Do you bu chance have a build thread? or at least offer some pointers/advice regarding the JZ swap. thanks in advance bud!


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