Builds LX450 where to start! (1 Viewer)

[scottryana]

For a truck you're not looking to make huge power on I wouldn't mess with the cams. You'll lose torque down low to gain some top end but with a good turbo selection. And reasonable power requirements you will be fine with the stock cams. If you're going to run higher boost like 10+ psi I would upgrade the valve springs though.

 

[FJBroBri]

Thanks for the clarity. Ya, I'm not wanting more top end.

For a truck you're not looking to make huge power on I wouldn't mess with the cams. You'll lose torque down low to gain some top end but with a good turbo selection. And reasonable power requirements you will be fine with the stock cams. If you're going to run higher boost like 10+ psi I would upgrade the valve springs though.

 

[FJBroBri]

Why haven't you invested in a set of ARP head studs and just r&r them one at a time?

Seems like something you'd do for insurance?

 

[scottryana]

If I was doing it again I probably would, but when I rebuilt the head and replaced it I was not planning on the turbo. I am not worried about it with this truck, if it blows I will re-do it, but it has been rock solid for a long time. The other truck I already have 625+ head and main studs sitting on the shelf for my big power build.

Why haven't you invested in a set of ARP head studs and just r&r them one at a time?

Seems like something you'd do for insurance?

 

[FJBroBri]

What did you do to your transmission at this point?

View attachment 856783 View attachment 856784

Ok I resisted the urges to mess with it any more, no crazy ignition systems etc, just run it how it is and leave the damn thing alone. Got the transmission finished, the transmission guru says it should be good for 700hp. Also installed the Haltech and cleaned up the tune a lot. Picked up another 60hp and 60ft/lbs in the midrange, the tuner was so happy to get away from the AEM he said the Haltech was a thousand times better. haha. Hope he doesn't care I stole these pics from their instagram page. lol.

 

[scottryana]

New steels, an extra clutch and redone valve body. Pretty simple mods. I am no where near 700hp probably closer to 450hp maybe peaked 500.

What did you do to your transmission at this point?

 

[FJBroBri]

I think that's about what I want to accomplish in the end....

500hp

Consensus....

Haha and that was still part throttle since going WOT in a neighborhood on a Sunday morning is pretty silly.

But I do feel this is the right amount of power for an 80! Lol

 

[FJBroBri]

Which Haltech kit did you go with? The Supra one?

 

[scottryana]

500awhp or 500 crank horse power? This is a huge difference in the 80 because there is such a huge parasitic drivetrain loss. 500awhp is likely just on the outside of what is achievable with pump gas, even with some engine work. In most circles it's assumed that the max boost on pump gas before serious detonation occurs is around 20 maybe 22psi. 22psi is on the high end but with a good tune, an effective intercooler and some meth injection I could see it working.

Anything above that and you need to look at different fuels. In the past you would be stuck with very expensive race gases, but now with E85, you get the high octane rating and the better cooling aspect because you're using 30-35% more fuel. This also leads to massive torque increases because of extra exhaust gas volume and the ability to retard timing with all that extra octane. The issue is that because it does require that 30-35% more fuel per hp, is that now your fuel system isn't up to task and for that 500awhp target you will need large alcohol fuel compliant injectors, a larger fuel pump(s), and perhaps even a larger fuel line.

I think where I am sitting on this build is just about perfect, for most people. I am sitting at close to 400awhp, I run pump gas, not as many parts needed to be changed out, I am in the 6 second club for 0-60mph with a 6000+lb truck, it has been very reliable and I haven't had any transmission or drivetrain issues up to this point......

I think that's about what I want to accomplish in the end....

500hp

Consensus....

 

[scottryana]

I didn't use a kit, I used the PS2000, with the pigtail wiring loom to wire it in parallel with the stock ECU. I know EMS gets a lot of hate but they had a custom 1FZ patch harness made up so I could plug it in between the vehicle harness and ECU and then make all my splices/taps there and not cut any of the factory wiring. If I wanted to go back to factory, I could just change injectors back to stock, remove the patch harness, plug the stock ECU back in an remove the turbo setup.

I would not go with the PS2000 now though. Their new elites are much much better. They have auto tune and knock standard.

Which Haltech kit did you go with? The Supra one?

 

[scottryana]

Again I know EMS got a bad wrap but they did more FI stuff in a year than the 15 years anyone else did prior. Lol. Here are the old pin outs I had from them.

Which Haltech kit did you go with? The Supra one?

 

[scottryana]

Oh and here you go, here is a patch loom!

 

[FJBroBri]

I meant similar output as your's: 500 at the crank, 400awhp

500awhp or 500 crank horse power? This is a huge difference in the 80 because there is such a huge parasitic drivetrain loss. 500awhp is likely just on the outside of what is achievable with pump gas, even with some engine work. In most circles it's assumed that the max boost on pump gas before serious detonation occurs is around 20 maybe 22psi. 22psi is on the high end but with a good tune, an effective intercooler and some meth injection I could see it working.

Anything above that and you need to look at different fuels. In the past you would be stuck with very expensive race gases, but now with E85, you get the high octane rating and the better cooling aspect because you're using 30-35% more fuel. This also leads to massive torque increases because of extra exhaust gas volume and the ability to retard timing with all that extra octane. The issue is that because it does require that 30-35% more fuel per hp, is that now your fuel system isn't up to task and for that 500awhp target you will need large alcohol fuel compliant injectors, a larger fuel pump(s), and perhaps even a larger fuel line.

I think where I am sitting on this build is just about perfect, for most people. I am sitting at close to 400awhp, I run pump gas, not as many parts needed to be changed out, I am in the 6 second club for 0-60mph with a 6000+lb truck, it has been very reliable and I haven't had any transmission or drivetrain issues up to this point......

 

[bahamasair]

I love your latest build. I have a miss that follows one of my injectors and just ordered the ID725 injectors, I really don't like the emanage ultimate piggyback that's on there now so ordered the haltech elite 2500 to replace it with. I also ordered a set of the Ls coils with the heat sinks. I'm Going to use the pickup in the distributor and the crank sensor and go sequential. I'll make up a cap for the dist so it's neater. I finished making my 4x4 labs front bumper a couple weekends ago that I modified to be flat instead of angling up and because of that had to totally change my intercooler position and piping. It's almost like I'm starting over but I'm motivated and reading up on this build makes me realize it's a pretty mild build compared to yours. I was starting to feel like I was getting out of control with it.

 

[scottryana]

If you want a really nice CNC'd cap for the distributor join the Turbo 1FZ facebook group a member there makes some nice ones! Great job on the build!

I love your latest build. I have a miss that follows one of my injectors and just ordered the ID725 injectors, I really don't like the emanage ultimate piggyback that's on there now so ordered the haltech elite 2500 to replace it with. I also ordered a set of the Ls coils with the heat sinks. I'm Going to use the pickup in the distributor and the crank sensor and go sequential. I'll make up a cap for the dist so it's neater. I finished making my 4x4 labs front bumper a couple weekends ago that I modified to be flat instead of angling up and because of that had to totally change my intercooler position and piping. It's almost like I'm starting over but I'm motivated and reading up on this build makes me realize it's a pretty mild build compared to yours. I was starting to feel like I was getting out of control with it.

 

[bahamasair]

I'm on the turbo Facebook page and now that you mention it I do remember seeing something about the dist cap. I dislike Facebook intensely and find it hard to navigate the group but I'll take a look now and see if I can get one ordered. Thanks

 

[FJBroBri]

The patch loom is compatible with the Haltech units your saying?

 

[scottryana]

The patch loom plugs in between the vehicle loom and the ECU so that you can splice and patch into the wires you need without hacking up the stock wiring.

The patch loom is compatible with the Haltech units your saying?

 

[dogfishlake]

Thanks for posting the pin outs, I'm saving for when the time comes...

I had an EMS exhaust that had problems but I don't care, I wish they were still here. They were pioneers at making a quality US based turbo kit for the 80 series.

 

[ThomasMore66]

Finally read through this thread. I really wanted to go LS and now I'm doubting myself. I want a turbo!

Is EMS still in business?