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daboosted93 09-20-2007 10:05 PM

86 turbo toyota pickup project/problems
 
5 Attachment(s)
So I just picked up my new ride! I found an 86 turbo toyota xtra cab 4x4 truck. It was not exactly what I was looking for, cause it is an automatic, but that is about to change. I got it for 2200 dollars, which I thought was a really good deal for the shape it is in. The motor runs a little rough, but has a few obvious problems. First of all, the first thing I did was change the oil, which was super black and probably not changed in like 10k miles. Then, it runs super rough on idle, and I was trying to figure out what was causing it. It felt like an ignition problem, and to add to that, it is running quite rich, like 13mpg rich. I replaced the plugs, and it had new cap and wires when I bought it.

Then I started focusing my attention on the MAF. It is a wierd maf, and has a flapper in it. I found out that it is working correctly, so then I was stumped. I tested the O2 sensor with a volt meter, and it read a solid .052 at idle, meaning it is stuck on that reading, so I replaced that. still didn't fix the rich problem. I then found out that my rubber hose that goes from the MAF to the turbo has been nig-nogged up with tape, meaning it is probably cracked or something. That means unaccounted air is getting into the motor making it run lean, then when the O2 sensor sees the miscommunication between the O2 and maff, dumping in more fuel to counteract it being lean. Thats what I think at least. Injector may be stuck open or something, but I am going to replace the intake tube first and see if that fixes it.

Also, my turbo is blown, it has bad shaftplay and I have a bunch of oil in the intake tube. It is a stock ct20 turbo, a tiny one at that. I would like to replace it, but have been looking into the fact of using a ct26 off a supra. I am not sure if they have the same flange, so i guess that is my question. Does anyone know if the ct26 turbo will bolt up to my manifold? also does anyone have any suggestions of cool upgrades to do to this truck? this is my first toyota, mainly work on hondas!

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Smith-02 09-20-2007 10:40 PM

Re: 86 turbo toyota pickup project/problems
 
swap to a t3, add an intercooler

daboosted93 09-20-2007 10:58 PM

Re: 86 turbo toyota pickup project/problems
 
intercooler will definitely be going onto it. I bet that alone will make it run a ---- ton better.

Smith-02 09-20-2007 11:04 PM

Re: 86 turbo toyota pickup project/problems
 
your cold start injector may be stuck on, from the fuel rail there is a 1/8" steel line that goes to a weird sort of injector on the intake , facing valve cover, right around the 'b' in turbo, unplug it, start back up. it's a mildly known issue, but they also make for cheap boost enrichments :). go to the parts store and get a new cap/rotor, looking new isn't new, and set the timing. cam could be off, if you can't pull a 10% grade at 55 without needing to downshift to 4th, you're underpowered. 13mpg is low, but not terribly out of toyota range, my 22r was carb'd, 31" bfg at's, running rich on a weber and i'd average high teens for mileage, flooring it really didnt make it much worse.

Smith-02 09-20-2007 11:11 PM

Re: 86 turbo toyota pickup project/problems
 
also ive got spare taillight lenses, 30 shipped, those fuckers are hard to find, you'll find this out. you fucker, i just sold a 60/63 turbo. if you want a t3 log manifold plug and play for any 20/22r engine, 100 shipped :)

bitchasscracker 09-20-2007 11:57 PM

Re: 86 turbo toyota pickup project/problems
 
ahhhh so these came turbo ?

Smith-02 09-21-2007 12:19 AM

Re: 86 turbo toyota pickup project/problems
 

Originally Posted by bitchasscracker
ahhhh so these came turbo ?

yup, what ------- rock were you living under?

daboosted93 09-21-2007 12:23 AM

Re: 86 turbo toyota pickup project/problems
 

Originally Posted by c0mpl3x
your cold start injector may be stuck on, from the fuel rail there is a 1/8" steel line that goes to a weird sort of injector on the intake , facing valve cover, right around the 'b' in turbo, unplug it, start back up. it's a mildly known issue, but they also make for cheap boost enrichments :). go to the parts store and get a new cap/rotor, looking new isn't new, and set the timing. cam could be off, if you can't pull a 10% grade at 55 without needing to downshift to 4th, you're underpowered. 13mpg is low, but not terribly out of toyota range, my 22r was carb'd, 31" bfg at's, running rich on a weber and i'd average high teens for mileage, flooring it really didnt make it much worse.

ya, I saw that injector, and never thought about that being the problem. how would you recommend determining if that was the problem or not. I would just unplug it and see if that fixes it, but if it is stuck open, I would not be able to tell.


Originally Posted by c0mpl3x
also ive got spare taillight lenses, 30 shipped, those fuckers are hard to find, you'll find this out. you fucker, i just sold a 60/63 turbo. if you want a t3 log manifold plug and play for any 20/22r engine, 100 shipped :)

as for this...!!! I have actually been looking for a header flange to make a new manifold to accept a t3 or t3/t4 turbo. I have a garrett super 60 i need to get rebuilt that will be perfect size for that motor. my drivers tail light is broken as you can tell too, so I will probably be taking you up on both of those offers here really soon.

Smith-02 09-21-2007 12:32 AM

Re: 86 turbo toyota pickup project/problems
 

Originally Posted by daboosted93
ya, I saw that injector, and never thought about that being the problem. how would you recommend determining if that was the problem or not. I would just unplug it and see if that fixes it, but if it is stuck open, I would not be able to tell.

as for this...!!! I have actually been looking for a header flange to make a new manifold to accept a t3 or t3/t4 turbo. I have a garrett super 60 i need to get rebuilt that will be perfect size for that motor. my drivers tail light is broken as you can tell too, so I will probably be taking you up on both of those offers here really soon.

120 shipped on both, ill throw in a t3 return flange in either stock flange, or aluminum -10an

bitchasscracker 09-21-2007 12:32 AM

Re: 86 turbo toyota pickup project/problems
 

Originally Posted by c0mpl3x
yup, what ------- rock were you living under?


a honda rock

daboosted93 09-21-2007 12:36 AM

Re: 86 turbo toyota pickup project/problems
 

Originally Posted by c0mpl3x
120 shipped on both, ill throw in a t3 return flange in either stock flange, or aluminum -10an

you talking about oil return fitting?

danronian 09-21-2007 11:03 AM

Re: 86 turbo toyota pickup project/problems
 

Originally Posted by bitchasscracker

a honda rock

Same here, I would love to find one of these turbo'd already. :y

BLAAST 09-21-2007 11:06 AM

Re: 86 turbo toyota pickup project/problems
 
What kind of power are you looking to do?

jeffescortlx 09-21-2007 04:04 PM

Re: 86 turbo toyota pickup project/problems
 
I also have been living under a rock. That truck is pimp, I'd drive that for sure. :y

daboosted93 09-21-2007 07:33 PM

Re: 86 turbo toyota pickup project/problems
 

Originally Posted by BLAAST
What kind of power are you looking to do?

well, It is still a stock motor, but I have done a bunch of research and I hear these motors with a metal headgasket and forged pistons can handle over 25 lbs of boost. It is a closed deck iron block with super thick cylinder walls. Stock this motor puts out like 135 hp and 175 torque on 5.5 lbs of boost on the tiny turbo. I think that if I replace the turbo with a 60 trim t3 and up the boost to like 8-10, I should be hitting 200-210 whp. nothing too much, as it is my daily driver and the only tuning available is megasquirt or a stand-alone, no piggybacks.

E-b0la 09-21-2007 07:50 PM

Re: 86 turbo toyota pickup project/problems
 
The 22-RTE is a pretty stout engine, with a shitty turbo system (tiny inefficient turbo, no intercooler). I just wish they made more of the pickups and 4-Runners in Turbo trim.

Smith-02 09-21-2007 08:21 PM

Re: 86 turbo toyota pickup project/problems
 
with a large cfm turbo, that motor will love you. keep airflow up and itll keep pulling

BLAAST 09-22-2007 10:43 AM

Re: 86 turbo toyota pickup project/problems
 

Originally Posted by daboosted93
if I replace the turbo with a 60 trim t3 and up the boost to like 8-10, I should be hitting 200-210 whp. nothing too much, as it is my daily driver and the only tuning available is megasquirt or a stand-alone, no piggybacks.

the t3 60 trim .48/.60 is definitely a good candidate for 210 WHP. to maintain a spool up as quick as the original, the stage 1½ turbine wheel sounds appealing.

Toysrme 09-22-2007 12:02 PM

Re: 86 turbo toyota pickup project/problems
 

Originally Posted by E-b0la
The 22-RTE is a pretty stout engine, with a shitty turbo system (tiny inefficient turbo, no intercooler). I just wish they made more of the pickups and 4-Runners in Turbo trim.

It was too expencive, was not that reliable @ an OEM level & had no torque. So they ditched them for the n/a v6's ASAP. We use to get alot of R's in for work. They suuuuck. After the first few rebuilds most techs hate seeing the things roll in the shops. Great engine family for 1980, but they most definately were showing their age by the end of that decade.


daboosted93

The cold start injector is only 75-125cc'ish. While it could be stuck open, it would not cause that amount of terrible fuel consumption. Change the cap & rotor, Change the plugs (NGK or Denso copper plugs). Change all of your vagina split charge piping...

AFA why your mileage is complete piss, I think you've got a stuck injector. Change them. Would *probably* be a good idea to go ahead & check your compression too...

daboosted93 09-22-2007 02:44 PM

Re: 86 turbo toyota pickup project/problems
 
Well, I do want to replace the injectors, does anyone know what cc rating they are? I have looked around and can't find anything. As for the charge piping, it will be getting a front mount when I switch turbos.

Toysrme 09-22-2007 08:32 PM

Re: 86 turbo toyota pickup project/problems
 
They should be pink, low imp, 295cc @ 36psi (318cc @ 41psi).

daboosted93 09-24-2007 08:52 PM

Re: 86 turbo toyota pickup project/problems
 
ok, well if I can't find a cheap set of stock ones, I will probably get some rc's or something and use those with an adjustable FPR.


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