Los Gatos?

3.4L + dual cams + 32 valves = serious power potential...are there any built naturally aspirated 3.4L out there? Higher compression plus Supra MAF plus some port matching, ignition tuning, headers, maybe a little bit of fuel tweaking as well, there is probably more HP in the 5VZFE than the 7MGE. Does anyone make mods other than for the S/C versions? Anyone doing head porting with any success??

4RUNR

Y3s, 1 put 1n s0m3 Vt3K t00 wh1l3 1 was at 1t. My r1d3 1s mad tyt3 and fast t00. 9second 1/4 m1l3 acc0rd1ng t0 m3 0d0m3t3r. 1t's n0 truck 3ng1n3 anym0r3, 1t's a sp3s1al rac3 car n0w.

yellowspeedracer

i suppose it's a matter of opinion but im a die hard boost guy. IMO n/a = waste of time/money. dollar for dollar, boost will always make more power.

if you don't want the S/C, why not go with a turbo....or 2.

rimpainter.com

Just for reference the 5VZ has 4 cams.

I met a guy here in PHX, who I referred to yotatech who had cams and some other work done. He was running a 75 shot.

I think his screen name is NX Tacoma.

My99

With superchargers so cheap and available, staying N/A would be a waste of time if you're looking for performance. Personally, I think a supercharged 4Runner is still gonna be too slow for me and just decrease it's lifespan, so I'm staying stock with the engine mods and maybe pick up a weekend racer for that side of my brain.

rwmorrisonjr

While I agree that the 4Runner will never be a "racer" due to design and that a weekend racer is a great idea, I haven't heard where the S/C will reduce engine life, unless you're constantly stomping on it. I drive mine very conservatively and only use the power when I'm merging into traffic or climbing the mountains out here to go skiing, never for towing (nothing to tow) or for showing off. If you have info from reliable sources (urban legends need not respond) please post the links so we can all do some research.

Edit: re-read your post, saw it was a personal opinion, so no flames are intended. I also agree that it will be slow, since mine still is, but better in the mid-range than a NA engine. The power is where it always should have been.

My99

Any stress is stress. I bought my 4runner probably to keep for many many years. Personally, from what I've seen and read, I would never throw on a TRD supercharger on without upgrading the fuel. Many trucks seem to be starved of fuel and run lean on top end. Besides that, over time if the auto tranny is not toughened up, it will fail. Even if it is toughened up, I still think it's life, and the life of the engine would be compromised. Just like towing a trailer, the truck can do it, and do it well, but if you put on a trailer for the life of the truck, it's just creating more stress than without, that's all I was saying. I also seem to notice a good percentage of "problem posts" from late model 4runner's are from those using superchargers.

P.S. i realize this isn't a flame war.

rwmorrisonjr

Cool, thanks for the thoughts on this. I must be one of the few who don't have any issues, since I haven't had any fuel starvation or pinging issues with the S/C. I just hate having to run Premium gas all the time, which could drive me to removing the charger at some point & selling it, but I know I'd miss the power. Either I'm just lucky, the altitude out here helps, or not having a stealership install it makes the difference.

My99

Not sure where lakewood is, but if lived anywhere higher than Denver, I think i'd get one either way. The thing is out there, there's so little O2, that you can't really starve the truck of oxygen because there's not enough to do so. And even with the supercharger, it wouldn't be putting out a whole lot of power, so the tranny should hold up better than at a lower altitude. Anyway, I just got back from Breckenridge last week and the truck was a complete DOG out there, and I wish I had a supercharger then. By the time I got back to denver, it seemed so much better. What a difference 5,000 ft makes. The first 5000 (0-5000) wasn't hardly noticeable, but the next 5,000 kicked my arse.

rwmorrisonjr

Your right about that, mine was a dog before I put the S/C on, and it helps a lot. Lakewood is on the west side of Denver, so its at the same altitude. We went to Southern IL in October and the truck had so much more power out there, but still no issues with fuel or pinging. I'll keep my mouth shut so I don't jinx my good luck!

Los Gatos?

I meant dual cams in each cylinder head. It's still a DOHC engine, that's all there are, other than rotary, SOHC or DOHC.

Los Gatos?

Yeah but with the correct fuel mods, plus installing it yourself, you'd still be looking at ... 3 grand, most likely. For 3 grand you might be able to pull of a 1JZGTE swap, which would stomp it anyway, stock, let alone with a good exhaust & intake set up and a little more boost (350 hp would be likely on 93 octane) And it would be smooth I6 power, not clunky unbalanced V6 power. The I6 is practically a truck engine, too! It's a 12 valve I think, because it's an older design, it's the precursor to the 2JZGTE that was available in the US after the 7MGTE. In Japan you could get several cars with 1JZGTEs which were only available with 7MGTEs here. Granted the 3.4L fits better in any year 4Runners bay. It's smaller than the 3.0, which was in 1st and 2nd gen 4Runners and 88-89 trucks.

My99

I did a swap a motor on a car, where the only difference was an extra fly wheel bolt hole, and you can't imagine all the things that I had to change to get the electronics to work. The cost wasn't that bad, the downtime was incredible. Sure you could throw an inline in there, but I think i'd rather have a diesel myself.

Los Gatos?

It depends how you go about the electronics. I personally do not even bother trying to integrate the electronics. Why not run a dual circuit? You could have the batter to the alternator to a switching block, it's not that complicated or dangerous. I would run the old brakes/charging/lighting system, combined with the newer engine control/ignition system. The engine specific electronics would be only connected to the truck by the alternator and the battery connection. I'm not sure how this would work on a truck with an extensive electrical system, but on my '85 22R there are only a couple engine wires, basically just the power for the ignition, it has a carb so that's basically all it needs. If I put in a new engine, I'd only use the engine specific stuff.

joez

how am i the first to catch this

It has 24, the I-Force V8 has 32 valves.

Zubaltec

The Toyota's in the Goody's dash series (roundy, roundy). Run 300hp 5vzfe's (carb'ed). Check out Toyota Motorsports on the TRD page. It's in there.

John

Los Gatos?

You're right, what I meant was it's a 4 valve per cylinder engine. I was thinking about 1UHZE (whatever the V8 32 valve 4 cam lexus engines are)