http://www.steedspeed.com/chevy_trailblaze..._turbo_manifold

Impressive.. Has one been "installed" on anyones truck yet?

hm...i'm not familiar with the 4200's but I can only see that ending badly without serious money put into the rest of the motor.

nobody i know but theres a guy on trailvoy with it. thats how i found it

NICE FIND

i curious why you think that?

X2....

DO IT!!!! I want to turbo my truck too.

nice looks like a cool looking piece.

well what's the compression ratio on the 4200? And the fuel system setup?

going NA-T on any vehicle requires a good amount of money into the engine..it just doesn't seem to me that gm really built the 4200 with boost in mind or to handle massive amounts of power.

you can boost anything you want with a little common sense. the 4200 has 10:1 which is a little higher than your average 8 or 8.5:1 but with low boost like 6psi and the tune that im workin on with efi live anything can be done. look at all these mustangs and shit that are NA and you just bolt on a blower and upgrade the fuel. whats the difference?

its easy to turbo any na car just like glen said you just got to use common sense no more than 5 or 6 psi of boost and a good fuel management thats the problem with all these idots putting turbos on there cars they just want to jack up the boost and go thats when you have to put the money into it.

holy shit its wilson!!!!

I don't see a issue boosting a 10:1 motor. It's all in the tune. I hate to keep using my buddy as an example but he's running 13psi from a v2 thru a ic. No internal work has been done. And is being tuned with a VAFC-II thru the OEM computer. He did blow his motor once thou.. but that was because of shifting to 4th he hit 2nd instead and spun the motor up to about 10k rpm.. And this car is daily driven all year round.


that's the one example I personally have seen and ridden in.

it's been done... i present to you the 400HP twin turbo trailblazer concept that never made it to production.. i remember readin about this when they first came out with it... wish theyd put it in production...
http://www.motortrend.com/future/concept_c...urbo/index.html


quote from the article:
Ask Fritz Indra, Powertrain's executive director of advanced engineering, why 400 horses are being extracted from a truck engine that makes 270 in production form, and he makes it sound like a logical extension of everyday engine-development work. "We just think 400 is a nice, reasonable number," he deadpans with his Austrian physics professor's accent. "And we were going after significantly more performance without changing the engine to a V-8."

"Of course, if we needed more, there's more to be had," adds a smiling, but equally dry Kociba. "The point was to demonstrate the bullet-proof nature of this engine with fairly minor modifications."

We were surprised to learn how little is changed to create this Bullitt Mustang-performance-equaling six, with its twin Aerodyne turbos and air-to-water intercooler. For example, the block, crank, head, head gasket, cams, and valve sizes remain virtually untouched. The extra breathing hardware adds but 45 lb to the engine's mass. The only critical mods were a switch to 8.5:1 pistons (from 10.1:1), the addition of piston-cooling oil squirters, shorter (by 2 mm) connecting rods, thicker piston pins, higher-flow oil pump and fuel injectors, and a freer-flowing exhaust system. As you'd expect, the 4L60-E four-speed transmission's internals required some beefing, and the transfer case was swapped for the ultra-tough all-wheel-drive unit found in the 6.0L V-8-powered Cadillac Escalade.

yeah but that was a built concept truck. i have checked that out before. i just dont understand why you can bolt a blower on anything but some think you cant boost the I6. i want to know the difference

well the mustang runs 9:1 (03 cobras were 8.5). The cobra motor also has a 7k rpm valvetrain, and the internals from the factory are pretty stout.


I remember when I was about to turbo my lexus, that was an 11:1 car. Without upgrading much else I could have kept the boost below 8psi, and had about 275rwhp. But, unless you plan on running meth, you're going to want to lower the compression slightly to avoid serious detonation, whether through internals or a thicker headgasket.

Again, the difference being that my GS had the 2jz in it; a motor that was basically built for boost (though in GE form was weak compared to the GTE)

I just can't see that 4200 being built with boost or super high power numbers in mind. Like you said, you can probably get away with 6psi or under, i just dont know how the rest of the driveline would hold up. I hope you DO do it though, that'd be nasty.

i say go for it put the turbo in. theres a company that makes turbos that run in the back of your car/truck too so you dont have to fight for clearance under the hood.

Wow its John..

STS turboes....they make a lot for the F-Body crew

And GTslO's

actually STS's setups are most successful on silverado's and escalades (those platforms have a shit ton of room to run the piping) and even corvettes.

IMO, remote turbos only go so far. Glen, you're definitey on the right track and i'd love to see the build, i'd just rather not see you blow up jens truck! hahah

well thats where your wrong. jen actually owns the camaro, the truck is mine!!

bitches

im sure that 4200 can be built to 350whp without and issue. my 2.4 in my cobalt is 10.4:1 from the factory, theres guys bosstin to about 8psi putting down 270+. ZZP slapped a stage 3 kit on a 2.4 cobalt and ran a 12.1@117.

i haz faith glenn. Turbo that shit

i was talkin to a guy lastnight that had a 12.5:1 motor that he was pushing 18psi through. he was running alcohol but still, it can be done with some brains

exactly, with meth you can run boost on high comp motors. It's actually recommended to do it this way for street driving since it doesn't reduce the efficiency of the engine.

but it just costs too much

well alky is expensive, but meth i scheap. its just washer fluid.

adam has it in his cobalt.running 22psi on the stock turbo/motor.

well if you run a 50/50 water meth mixture it's not too bad IIRC. Obviously won't support a lot of boost but will get the job done

This is dumb.. Why can't you boost it? any stock/mild engine on the planet with aluminum heads even with a lousy rising rate fuel pressure regulator should take at least 6 PSI.. Hell there's guys doing it with Cavaliers and remote mounts..

One guy got 367 HP out of a 3.4l with forged pistons and the proper equipment and tune and the turbo up front, and that was around 11-12 PSI if I remember right.

If that 4200 is aluminum headed, I wouldn't be afraid to try it. Iron heads are a different story.

EDIT: I can see a smartass going "try boosting a 14:1 compression 800 HP N/A engine" so I added a few caveats.

you can boost it. like you said, you can boost anything

and you can boost a 14:1 motor but you just have to run meth or alky

I know YOU know that, I meant that to the people here saying it's not doable.

alky and a daily driver don't really go together, lol.

exactly my thoughts!!

i don't remember anyone saying it's not doable....


and running a full alcohol injection yes, not streetable. But, 50/50 water/meth is definitely usable in a daily driver.

Now all I gotta do is figure out why EFI Live won't read your PCM???? hopefully Erik will let me know why, I wanna flash that tune in it and see how much difference it makes!!!

6lbs yeah for the most part...for a little while. Head gasket eaters...Grab the 200 dollar suckers and you're fine.Meth is all fun and games till you run out. A lot of people go and use the washer resevoir..can only get so much in there. Of course if you do a very safe tune then add meth along with it game on.

Most any 302 stock lower mustang with boost is a hand grenade with the pin pulled.

Thats cause its a FORD

exzachary!!!!

my all aluminum (100% stock internal with no meth) 4.6 32v is running 10psi right now with no issues whatsoever.


I can't speak for the 5.0's, but there's a reason ford did do away with them. The 4.6 32v is much more boost (and rev ) friendly, but the boost friendliness is a direct result of 9:1 or 9.5:1 compression (can't remember off the top of my head which it is)

I thought ford wanted to do away with pushrods and do a clean slate engine in the mid 90s.. Fuel efficiency was the reason.. SOHCS were around in the late 60s, but they were strictly NASCAR engines.. at the time it wasn't economically feasible (or worth it) to build them in mass quanities. Engine before its time.

also part of it as well, the move from the pushrod to the mod motors.

5.0 blocks aren't rated for much. depends on the yr really internal-wise...87-89??? 302s came w/hypereutectic(sp?) pistons. 90-92'...forged pistons.both had cast rods n cranks..(think?)...i dont consider forged pistons to let ya run more boost..IMO the crank n rods bein beefed up will letcha go more boooost

4.6 def high rev masters lol

heh, 7k rpm redline FTW!


Yes, hypereutectic (aluminum, essentially) pistons and cast parts are fine. The reason forged parts are considered 'better' is because when metal is forged rather than cast, the makeup is much more dense. More dense=harder to warp and or break. Crank and rods being forged are basically essential for high boost, but having forged and/or dished pistons will help as well, just eliminated one more ponit of failure.

Hyper = strong, but brittle.. Doesn't resist detonation. the mini explosion (detonation) has a habit of cracking the piston.

Forged = Strong.. but 'softer'... when it experiences detonation, it 'gives' a bit before cracking and failing all together. a side effect of being softer' is the pistons expand more in the bore. as a result, the clearances are a bit wider for the cylinder bore clearance.. Forged motors on a cold startup are a little noisy... they expand a lit.

Hypers are good for engines with a rock solid tune, that you expect to go for a billion miles with no rebuilds.. the tolerances are very tight.

stock 302 block with a little boost

Hey it's two inline 4's side by side

lol!! basically

Im pretty sure thats backwards...the 87-92's had the forged and the 92(last 2 months of production)-95's had the hypers.