Possible turbo kit??

[Snailblazin']

Whilst trolling YouTube I came across this little gem. Does anybody know anything about this?

http://youtu.be/OTiGYfBnidY

I fired off an email immediately following asking about specifics.

 

[Hypnotoad]

You won't find anything like that in a kit. There's a few turbo 360s, but I've never seen that one with the remote mount turbo. It looks pretty bad ass though.

 

[Blckshdw]

As far as forced induction on 360's go, there are 2 members here that have built one.


4.2 Envoy Turbo Build


Supercharged Trailblazer 4200 I6

 

[coolasice]

I know sts makes a remote turbokit for the ss

 

[TimRXUV777]

How about, does anyone make a supercharger or turbo kit for the 5.3l v8?

 

[Blckshdw]

I think you can use the same ones as for the 6.0L V8. You may want to do some browsing over on SSOwners and read up over there.

 

[Mounce]

I've seen superchargers for the 5.3's. They're not cheap though especially if you buy the optional intercooler.

 

[Snailblazin']

I've been doing some preliminary research regarding increasing the hp'z and it seems as though there is no "easy" option. Someone more knowledgeable can surely correct me if I missed anything.

LS Swap - requires year specific engine, harness & computer plus tuning, motor mounts (basically having a complete donor vehicle at your disposal) Cost: ~$5k

Forced Induction on the 4.2 - supercharger/turbo, intercooler, ducting, oil lines, waste gate, boost controller, custom intake/exhaust manifolds, upgraded fuel delivery system, different/modified sensors, different pistons to reduce compression, valve train upgrades, bottom end upgrades, tons of tuning. From what I've read the stock engine will handle ~400 hp. Cost: ~$5k

4L80E with higher stall, SS rear end, and depending on whether you're keeping it 4wd: transfer case, different/custom crossmembers

If one were to be willing to lose some creature comforts and the 4wd system how much "easier" does this become? What about running a stand-alone efi system?

 

[limequat]

Builtperformance.net turbo Inline 6 vortec 4200 remote mount turbo system. 02-05 mafless guys rejoice we've done it! Any questions or information call/txt/email us at: (920) 659-0687 email: sales@builtperformance.net

 

[gmcman]

I'm not 100% on this but I hear a set of 06+ heads, ported with aftermarket cams net roughly 50HP.

Pricey though.

 

[limequat]

I'm not 100% on this but I hear a set of 06+ heads, ported with aftermarket cams net roughly 50HP.

Pricey though.

efi-diy dynod his setup with low compression pistons, ported head, cams, and no VVT at 350 crank. Those are gains over 50 hp and consider that with stock compression and VVT it would be even more.

The stock muffler also seems to be quite restrictive. There's a nice swap on vortec4200 into an old GMC. Early engine no mods other than my stand-alone tune, 253 to the wheels. Trailblazers of that vintage normally put down just over 200 hp. Same with my Supra. Dynod 250 hp with just my tune and a 3" exhaust.

 

[limequat]

Teaser: Lime-Swap is planning to introduce a new product this month that will make turbocharging your gmt360 much easier.

 

[Snailblazin']

I should re-title this thread to cover all power adding options. It would be nice if all scenarios with pros and cons, with educated discussion, could be found in one place. There are so many threads started and never finished. As I understand it ConeKilrAutoX aborted his build due to oil pressure issues with turbo. I'll tune into his build whenever he gets it going again.

Can the 02-05 cylinder heads be ported to flow equal to or better than the 06+?

Custom ground cams...does anybody know where specs can be found for stock vs. custom?

Is there anything to be gained in changing out the injectors/fuel pump to higher volume versions? Specifically, can the motor, via tuning, be made to utilize the extra flow over stock?

Here are all the power-adding mods to the 4.2 that I've found so far:

1 - PCM tune
2 - CAI
3 - Electric fans
4 - Free flowing exhaust
5 - Header - debatable as far as I'm concerned
6 - 2WD conversion
7 - 4.10 gear swap

 

[Matt]

Electric fans, according to Roadie, don't give you enough of a gain to warrant putting them into the I6. CAI is another on that is VERY debatable.

The only mods, AFAIK, to really gain something would be PCM tune, headers, exhaust and then turbo or supercharger.

 

[Snailblazin']

I've read that as well, only upshot would be if your fan clutch is pooched anyway. You'd gain whatever the parasitic loss is. Also from what I've read no one can give an accurate appraisal of the net hp gain from a header. I haven't read any dyno results that compare a stock engine (with factory tune) vs. stock engine w/ header. It seems that the torque curve is a lot flatter but spending $1k for a flat torque curve seems a tad on the excessive side. I'm going to hit up the local wrecker and see if I can find a cylinder head to screw around with.

Does efi-diy still lurk on any GMT forum? I'd like to know who made his cams, and generally pick his brain, and if I recall he lives relatively close to me...

 

[limequat]

You may want to check out vortec4200.com if you're serious about boosting.

 

[gmcman]

Can the 02-05 cylinder heads be ported to flow equal to or better than the 06+?

There isn't alot of meat around the ports in the earlier heads, porting would be very minimal. Just the labor to remove the heads, if you manage to not break any bolts, would warrant going with the 06+ heads from the start IMO

I believe Competition Cams will grind a set of cams but the blanks plus the grind if I'm not mistaken are in the neighborhood of $1K-1,500. Maybe that price has come down slightly but I would surely love to do this as well. I want to speculate if you have a set of cams ground for a non-boosted motor the lobe profile may be too aggressive if you have them ground for a boosted motor. That I'm not sure of, maybe LImequat could shed light on that with this motor.

 

[gmcman]

Teaser: Lime-Swap is planning to introduce a new product this month that will make turbocharging your gmt360 much easier.

https://www.youtube.com/watch?v=0Iiu_QQ9gKo

 

[ConeKilrAutoX]

Well well well... I found the forums again! Sorry it has been a while, working 85 hours a week with 3 jobs has been killin me.

I have decided to keep mine N/A and not rebuild the turbo only because I need the money for a wedding next July.

Turns out that 2 of my exhaust valves were stuck most likely from me over heating them and the oil on 2 specific occasions where oil temps were north of 375-400 * F ...That is also what led to the starving / frying of my turbo.

I ran 2 dedicated efans from toggle switches (not dependent on temp reading or the pcm...switch on and they are on switch off and they are off). I LOVED getting rid of the stock fan and the risk of ruining the water pump because of a bad fan clutch. HOWEVER, THIS IS NOT WHY I OVER HEATED THE OIL...I over heated the oil from 2 very long nights of racing (almost without breaks) to the point where the turbo (hotside) and exhaust piping were glowing redish-orange.

snailblazin' - intercooler, ducting, oil lines, waste gate, boost controller, custom intake/exhaust manifolds, upgraded fuel delivery system, different/modified sensors, different pistons to reduce compression, valve train upgrades, bottom end upgrades, tons of tuning. From what I've read the stock engine will handle ~400 hp. Cost: ~$5k

I bought all of my parts, tune, did all of my own labor and it cost me about 3K instead of 5. BUT IT WAS a HELL of a lot of work and was very frustrating at times as limequat can attest to!
up to 10 psi on stock internals (without 6 hours of non stop beating was safe)
wastegate (unless you get an internally gated turbo), blow off valve, intercooler + piping, exhaust piping (including up and downpipe), stock fuel pump just 80 lb/hr injectors, a lime-swap.com (Awesome) tune, no boost controller needed depending on how you decide to plumb your wastegates/turbo, I used the stock intake and exhaust manifolds and simply made a "J" pipe up to where I decided to mount my turbo. for me I needed an 06 pcm and complete 06 engine wiring harness that required moderate re-wiring but I did it in the snow, no lift, with wire strippers, heatshrink, tape, and the diagrams I made.

hope this helps a little bit !

 

[Snailblazin']

...but I did it in the snow, no lift, with wire strippers, heatshrink, tape, and the diagrams I made.

That sounds like any task I've ever undertaken! Good for you. I have zero experience with these electronics, I've never tuned anything in my life (except my guitars) and I have no access to fab parts...but...I learn fast, love to read and love to try new and different things! I don't mind spending the cash on quality parts as it will be spread out over the next year or so and thus a tiny bit easier to swallow, just don't tell my wife!



Why did you need an 06 PCM? For its ability to "read" boost over the P10?

 

[limequat]

^ Pretty much.

The "common knowledge" several years ago was that it was impossible to t/c the 02-05 TBs due to the weird P10 PCM. The P10 calculates load from TPS and MAP and bases everything off of that load value. If you try to switch to a 2 bar map you'll screw up the load calc. The only t/c 02-05 engine I know of was tuned with a rising rate regulator - and the stock MAP sensor.

The 06-07 PCM uses a MAF sensor. The amount of airflow that it can read is limited by software to 67.7 lb/min. This works out to somewhere around 15 lbs of boost at 6500 rpm.

Here's the kicker though: The 06-07 PCM also calculates load value from MAP and TPS.
I'm sure that it would be feasible to get a decent 8-10 psi tune on a 02-05 with a 2 bar map. However, nobody wants to go to all that work without KNOWING the tune will work. The P12 is proven. The P10 is not.

 

[Snailblazin']

Any update on the unicorn part?

Would using an aftermarket ECU be "easier" to tune and integrate with the factory control modules and harnesses versus finding and swapping in a MY06 PCM?

Can the factory PCM be tricked to believe it's still working, thus allowing all previous systems to work as they should while MegaSquirt handles air/fuel/spark/timing?

I'm still waiting on the admins at Vortec4200 to approve my membership request otherwise these questions would be posted there too.

 

[limequat]

Delayed, but it's still in the works!

I don't think you'll ever get an aftermarket ECU to do all the things the stock PCM does. In addition to controlling the engine and trans, it also talks to the ABS module, drives the cluster, talks to the radio, BCM, etc.

 

[eutechnyx]

Limequat are you personally selling those turbo kits? I sent an email reguarding a kit and I got no response back. Thanks dude.

 

[BlazingTrails]

Limequat are you personally selling those turbo kits? I sent an email reguarding a kit and I got no response back. Thanks dude.

Do an LQ4 or LQ9 swap bro. Much more reliable for less money. IMHO

 

[limequat]

Limequat are you personally selling those turbo kits? I sent an email reguarding a kit and I got no response back. Thanks dude.

Nope, that's not me!
My site is http://www.lime-swap.com

 

[eutechnyx]

Ah ok, well I'm assuming they are not in business anymore?

 

[Snailblazin']

Delayed, but it's still in the works!

I don't think you'll ever get an aftermarket ECU to do all the things the stock PCM does. In addition to controlling the engine and trans, it also talks to the ABS module, drives the cluster, talks to the radio, BCM, etc.

I was thinking more along the lines of running it in tandem with the existing PCM, allowing it to do what it does but leaving the timing, fuel/air, etc. to megasquirt or an equivalent. Doable?