Limequat's 4.2l I6 Swap

[limequat]

What wouldn't you give for a little more displacement out of the 7M? Or even a 2JZ for that matter? Wouldn't it be sweet if -intead of the V6s- Toyota came out with a 3JZ? And while we're dreaming, how about an aluminum block to keep weight down? And a bellhousing that mates up to a R154?

Well, my 7m has crapped out on me for the last time, I've had enough. I need a real straight-six. And you know what? Three liters is not enough. Three and a half liters is not enough.

You know where I'm going with this?

 

[limequat]

 

[limequat]

Maybe you're not familiar with this engine. Given its application it is most certainly doomed to obscurity. But look at the intake manifold. The design could have been copied right off the 7m. And check out the accesories. Alternator, A/C, power steering pump...all in the same location as the 7m.

Then there's the specs. 290 Hp out of the box, naturally aspirated. The aforementioned aluminum block and head. DOHC, of course, but not with the rackety direct actuated valves (good-bye shims, I don't miss you). VVT on the exhaust side, atleast. It bolts to the R154 using a stock bellhousing. The PCM is mounted to the engine, making wiring simpler. Coil-on-plug and sequential injection (eat your heart out 2JZ fans).

Do you know what it is yet?

 

[adampecush]

GM vortec 4.2 out of a trailblazer/envoy?

 

[SURUKO]

anxious to know and to see it teardown and later with a big turboo........lol

 

[psykho supra]

GM vortec 4.2 out of a trailblazer/envoy?

Thats what i'm thinking, but the Landcruiser had 4.2l also. Kinda confused if it bolts to R154.

 

[tacoma_kyle]

Were the Cruiser motors aluminum? I would have expected them to be iron...

I thought there was a 4.2 and 2.5L...just saying there was two from memory.

 

[supraracer49]

The word "VORTEC" right on top kinda makes it a dead give away lol


Sad to see this domestic pos going into a supra

 

[SURUKO]

CHEVY Trail Blazer 4.2 L VORTEC Engine .......got you

 

[Doward]

The 4.2L has proven itself to be dead reliable, if nothing else!

 

[limequat]

Yep, it's out of a Chevy Trailblazer, and it's certainly no "pos". It's a Wards best engine for several years, smooth powerful, and *cough* reliable. Mine has 23,000 miles on it and is a MY2006.

It's often overlooked because it only ever came in the Trailblazers/Envoys.

 

[limequat]

Check this out. The mains are all tied together into a single aluminum girdle:

The 4200 is only availbe in front sump, so figuring out the oil pan is the first order of business.

 

[SURUKO]

nice man looking forward to see how it goes g'luck with your build...:naughty:

Yep, it's out of a Chevy Trailblazer, and it's certainly no "pos". It's a Wards best engine for several years, smooth powerful, and *cough* reliable. Mine has 23,000 miles on it and is a MY2006.

It's often overlooked because it only ever came in the Trailblazers/Envoys.

 

[limequat]

nice man looking forward to see how it goes g'luck with your build...:naughty:

Thanks, hopefully not a complete disaster.

 

[mobes]

Nice to see someone thinking outside the box.
What does it weigh in at?
Should match up nicely with your AR5?

 

[SURUKO]

in for some stripped engine pics....




(suscribed too)

 

[Neodeuccio]

lurking... I want to see how this plays out...

Good luck! I really hope this works!

 

[limequat]

Nice to see someone thinking outside the box.
What does it weigh in at?
Should match up nicely with your AR5?

I haven't found exact figures, but about 400 lbs. It's a wash with the 7m-gte.
Should go well with the AR5, but there's no reason why it wouldn't mate just as well with a R154.

 

[dslocal]

What are your plans after you get it in? Turbo? Power goals?

 

[Doward]

I'd definitely turbo it. Run the stock wiring harness/ecu, and get HP Tuners.