New year, new build: 1991 2JZ- CA street-legal LS7 killer

[got_boosted]

Current setup (Updated Sep 8th, 2008):

Engine/Drivetrain:
-Aristo 2JZ-GTE
-USDM TTC twin-turbos
-R154 transmission
-OEM Aisin clutch (I got it cheap, and it's holding fine. )
-Jawsgear 1pc lightweight driveshaft
-Driftmotion 12x24x3 FMIC
-Custom IC piping, 2.5" from turbos to IC, 3" from IC to TB
-HKS Gen. 2 SSQV
-Custom intake w/ large K&N filter
-Custom 3" downpipe > high-flow cat > 3" catback
-USDM 2JZ-GTE water pump, FAL210 fans
-1pc lightened driveshaft

Electronics/Gauges
-Battery relocation using Odyssey PC680 dry-cell battery
-PRofec B-Spec2 EBC
-Greddy FATT
-AEM UEGO wideband o2
-Autometer Sport-Comp +30/-30 boost gauge
-Autometer Sport-Comp EGT gauge
-N/A voltmeter in place of stock boost gauge

Wheels/Tires/Suspension/Brakes/Steering:
-Gloss black '91 5-spoke wheels w/Kumho Ecsta ASX's
-Suspension Techniques springs (linear spring rate)
-Brembo OE rotors
-Axxis Ultimate ceramic/kevlar pads
-Wiisass steering rack spacers

Interior:
-Custom rear seat delete (Autopower race roll-bar coming soon)
-Grant GT racing wheel
-Lotek pillar pods

To do's:
-Replace head gasket and install ARP studs, rebuild head while it's off

-Remove ABS using parts from non-ABS donor car


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Build thread:

Over the last year, I got my 1991 Supra, blew the headgasket on the 7M for the 2nd time, swapped in a 2JZ, converted to a single T04R turbo, and swapped from an auto to an R154.

Here's a little video of the buildup with the car in action.

.

And another with just driving and no music, slightly different footage too:

.

Current mods (Jan 1st, 2008):
Aristo 2JZ-GTE
R154
7M oil pressure sender conversion
T04R turbo, 4" in, 2.5" out, .81 A/R, 3" v-band exhaust, polished compressor housing
Ebay SS T4 manifold
50mm wastegate
SSQV BOV
12x24x3 FMIC, 2.5" from turbo to IC, 3" from IC to TB
4" polished intake, large 4" K&N filter
Custom 3" downpipe > high-flow cat > HKS Sport 3" catback
USDM2JZ-GTE water pump, FAL210 fans
1pc lightened driveshaft
Battery relocation using Odyssey PC680 dry-cell battery

However, after all this, my plans for the car have changed a little. Instead of throwing lots of money at big fuel system, I'd rather put it into other stuff like suspension. And while the reponse on this turbo is amazing, the way it hits is interesting when trying to gently power out of a turn.

The goal for the new setup is at least 500whp on modified USDM twins, a stock looking engine bay, and a suspension setup competitive enough to hang with the new C6 Z06 corvette on a road course. In short, once swapped to a USDM head, a CA street-legal LS7 killer.

So far I have purchased a set of USDM twins (schedualled to arrive in two days) that I will be removing all the sequencial valving from for a true twin-turbo setup without the restrictions of the sequencial setup.

I'm going to try to document this build thuroughly, so check back for updates often.

 

[futara_dan]

What song is the one being played in the video?

 

[EvoLuTioN]

think thats a little farfetched with twins to kill a ls7 but thats just me

 

[MK3.0dudeman]

Came out real man.I've been fallowing this build for about a year it looks like a sick set up and still your going for more thats insane but I'll be here checking it out.good luck and please more videos

 

[got_boosted]

think thats a little farfetched with twins to kill a ls7 but thats just me

C6 Z06 Corvette: 505HP at the crank

Stu Hagen's modified twin MKIV: 530WHP

There's a weight difference, but when I'm done there won't be much. I'll get there. I'm not so much interested in completely destroying as much as hanging with and then some. If I can do that, I'm still in pretty good shape.

futara_dan: Song is "Star" by Hell Yeah

Also, added another vid to 1st post.

Collin

 

[jsnowman76]

man i want to see this thing in person

nice video

 

[got_boosted]

Came out real man.I've been fallowing this build for about a year it looks like a sick set up and still your going for more thats insane but I'll be here checking it out.good luck and please more videos

man i want to see this thing in person

nice video

Thanks for the comments! Seeing it in person can be arranged. Let me know next time there's a meet going on. I don't really pay much attention.

Collin

 

[Rennat]

By street-legal how do you mean that? you'll have smog equipment? cause as far as i know any 2jz in a mk3 is "illegal" by CA DMV Rules...

 

[IJ.]

Collin: I'm interested to hear how the 04r hits?
(Just upgraded to an 04z here)

 

[got_boosted]

By street-legal how do you mean that? you'll have smog equipment? cause as far as i know any 2jz in a mk3 is "illegal" by CA DMV Rules...

Any engine swap is legal as long as:
- It is the same year or newer than the vehicle (Check!)
- It has the same or greater power than the stock engine (Check!)
- It retains all properly functioning emissions equipment (USDM 2JZ-GTE head, intake manifold, and EGR will have to be installed for it to pass the visual inspection)
- It is from the same class of vehicle (passenger/light truck/etc.) (Check!)

I've done this quite a few times. It's simple as long as you follow the rules. My goal is to meet these requirements and either perform modifications that fit inside the "rulebook" or modifications that are visually undetectable, such as internally modified turbos, aftermarket BOV hidden behind the front bumper, true twin conversion (changes only non-emissions vacuum routing). A buddy of mine has a CA SMOG legal 2JZ-GE in his 1992 Supra, and he simply followed the rules above. Another is putting a 2JZ-GE into my old 88 Supra which be bought from me a few months back.

Edit:
This actually aplies to all engines/vehicles. I could put a brand new LS7 into an RX7 and as long as I can mimic the configuration of the fuel system and emissions equipment in place on the Corvette, it too can be legalized by a referee station.

Collin

 

[got_boosted]

Collin: I'm interested to hear how the 04r hits?
(Just upgraded to an 04z here)

The T04R hits great! Yours will spool faster, but mine makes boost just below 3K, and depending upon ambient air temperature and fun stuff like that, full boost by 3.5K to 4K rpms. If you're already at a higher rpm and lay into the throttle, the spool is almost instant, which is perfect for what I wanted- quick boost exiting turns. I'd keep it, but it actually hits a little too hard, and it becomes difficult to control the boost while cornering, and the capability of this turbo is a little beyond my needs for a fun twisties car, hence going back to a twin-turbo setup and a simple fuel system.

HTH

Collin

 

[IJ.]

Collin: Thanks that's exactly what I wanted to hear

 

[EvoLuTioN]

why don't you just get it BAR'd?

 

[got_boosted]

why don't you just get it BAR'd?

I've heard this before, but I thought people were referring to the referee process at the BAR test stations like I was talking about earlier in this thread. Is this different? Explain?

Thanks,
Collin

 

[BorHor]

why don't you just get it BAR'd?

It has to be BAR'd to be street legal. 500HP should be easy. I know a guy that is just BPU and not even tuned and made 425 to the wheels.

 

[Rennat]

I figured if you kept it all it should be legal... but now, lets say you get pulled over by a cop one night, says you have all this "illegal shit" in your engine, and sends you off to a ref. you would pass right because you have all of the stuff you listed?


and my g/f swapped a ford v8 into her jeep and got it all smog legal and what not... so i know it can be done, just wasnt sure if CA was import haters or not.

 

[BorHor]

Legally it can be swapped in. You just have to get it BAR'd. So that means a stock USDM 2JZ-GTE. Which this wont be.. so this will be as street legal as a 1JZ would be.

 

[got_boosted]

It has to be BAR'd to be street legal. 500HP should be easy. I know a guy that is just BPU and not even tuned and made 425 to the wheels.

So, yeah, I "BAR'd" is what I was referring to on the 1st page.

Legally it can be swapped in. You just have to get it BAR'd. So that means a stock USDM 2JZ-GTE. Which this wont be.. so this will be as street legal as a 1JZ would be.

The only difference between my engine engine and a USDM GTE is the head (EGR vs. non-EGR). The emissions vacuum routing will be identical to a USDM GTE. The only stuff I will be changing is in relation to the turbos. None of that stuff is even checked by the smog dudes, who only inspect the EGR and vapor recovery systems, therefor it can be altered without rendering the vehicle illegal. In essence it will be a stock USDM 2JZ-GTE that should pass the BAR inspection. Upgraded turbos will be completely invisible to visual and emissions inspections.

Collin

 

[got_boosted]

I figured if you kept it all it should be legal... but now, lets say you get pulled over by a cop one night, says you have all this "illegal shit" in your engine, and sends you off to a ref. you would pass right because you have all of the stuff you listed?

That all depends on what he's ticketing you for. The rules for modified intake and exhaust systems are still in effect. I will have to run a CARB approved intake/filter setup to be truely legal, and technically any modification of the exhaust system before the catalytic converter is illegal, except for in this case where it is neccessary for making the engine fit correctly in this vehicle.

If you guys are really curious about the rules, go check out the CARB website and read up on legal modifications. Knowing this stuff really comes in useful when you have a hobby like this.

Collin

 

[EvoLuTioN]

as far as I know, the hondur crowd does it all the time, getting it BAR'd should be too hard as long as you have all the stock emissions on it and pass smog, but i'm no expert, check out bayarearacing.com they seem to know alot about this stuff