89 turbo fuel curve? - Toyota Nation Forum : Toyota Car and Truck Forums

Darknights · 02-23-2005, 06:40 AM

Does anyone know where I can find the fuel specs for my 89 7m-gte?

Jeeves · 02-23-2005, 11:43 AM

Define "Fuel Specs"?

You've got 440cc, Low Impedence (IIRC) Top Feed Injectors.

Darknights · 02-23-2005, 03:49 PM

thank you, do you know how many lph the fuel pump pushes out?

***bgrieger*** · 02-23-2005, 10:38 PM

barely more than fuel cut worth before reliability becomes a concern. I don't think anyone has bothered to measure it in more than 5 years knowing that crossing the limit makes one buy new anyhow. (it got posted to the old SOGI message board a long time back as I remember)

Jeeves · 02-24-2005, 07:07 PM

Pretty much, if you push more than 12psi, you need fuel injectors and a 255 Walbro is recommended.

Darknights · 02-25-2005, 05:54 AM

Thanks again

Jeeves · 02-25-2005, 09:45 AM

Just as a sidenote, if you go with a 255 Walbro fuel pump, you're also going to want to do the "constant 12v mod", drill out the J tube, and possibly invest in a rising rate Fuel Pressure Regulator.

-12v Mod-
This mod changes the way the Supra runs the fuel pump. In the standard setup, the system will switch the pump between 9volts and 12volts depending on what it needs. With the aftermarket pump you obviously just want a solid 12volts. This makes that possible.

-J Tube-
On the Driver side of the block, bolted to it, is a small metal tube that looks exactly like it sounds. A small/medium size letter J. It's inline with the fuel system so it's suggested you don't just pull it off (Pull the main EFI fuse under the hood and crank it a few times to relieve the pressure in the line). Anywho, back on topic. If you look at the metal tube it's got a cover over one end that drops the flow to a little larger than the head of a pin. Most people just take a drill bit to this hole and expand it to the full size of the J-Tube. Just make sure metal shavings don't end up in the fuel line.

-Fuel Pressure Regulator (FPR)-
With more fuel and HIGHER boost levels, the factory FPR just doesn't cut it. The suggested upgrade is an Aeromotive FPR kit. If you look around, people have begun selling this for a decent price on ebay.

Darknights · 02-25-2005, 12:15 PM

Jeeves.....you rock.....simple as that. The information you have given me in this post alone has been more than crutial, you deffinatly know your stuff man. Thanks again.
I'm doing up my supra from scratch (apparently the head gasket has been done but I'm gonna do it just to be safe) I've checked out guides on 7mpower and other sites on what to start with. Do you mind if I ask where you started?

Jeeves · 02-25-2005, 03:28 PM

Quote:

Originally Posted by Darknights

Jeeves.....you rock.....simple as that. The information you have given me in this post alone has been more than crutial, you deffinatly know your stuff man. Thanks again.
I'm doing up my supra from scratch (apparently the head gasket has been done but I'm gonna do it just to be safe) I've checked out guides on 7mpower and other sites on what to start with. Do you mind if I ask where you started?

In which way? Mods?
Lets see..
Intake
[Gauges]
Shimmed the wastegate
Manual Boost Controller
3" Turbo Elbow
S-AFC
AVC-R
Full 3" exhaust

I sorta went about things back-assward and as the money came, I think we all know how that goes. I also did a number of other things between those steps. 2 Motor pulls, inumerable others for friends cars. Crankwalked one 7M, put a tow hitch through the oil pan of another, etc. Research, research, research. At the moment I've got a full t04 turbo kit, with intercooler, hard pipes, 550s, vpc and a built motor to go into the car. Have everything but the big cost, the motor.

If that's not whatcha mean