VQ40 Questions

[MinisterofDOOM]

I am curious if anyone has heard anything about the application of the VQ40 beyond next year's Frontier, Pathfinder, and XTerra. Have any other models been announced using this engine? Perhaps the Z34 or 7th gen Maxima? Also, have any numbers been released for this engine? Imagine what that torque curve must look like!

[madbouncy]

I haven't heard anything beyond what you have. Though I don't think I'd really want it in a maxima. For them to bring the engine up to 4L, they'll probably do about what they did to bring the vq35 up to 3.5 over the vq30. They'll add a bit to the bore and make the stroke even longer. It'll end up like a v6 ka24de. Has good power but won't rev at all. Now that's perfectly fine for anything made for towing, but on a maxima I'd rather have the vq35de or even the vq30de to let the rpms ride a little higher. none the less, the torque curve will be amazing and it'll make a great engine.

[MinisterofDOOM]

I'm not looking for S2000 L-4 high revs, I am looking for torque and a wide powerband just like most VQ buyers.

[madbouncy]

It's all just preference, I personally like a high revving engine, however I don't like having to bring the car up to 6000 rpms just to get the thing to move. Hell I'd have one gear and an engine that could rev to 50k if I could =) Though I'd miss getting to shift. Would be funny as hell seeing the torque to horsepower ratio on it though, 30 ft/lbs and 300 hp. Would make a crazy go cart.

[MinisterofDOOM]

Yeah, that'd be cool...there is a guy around here who makes massive motorcycles using Flathead ford V8's, direct drive, one gear. They are HUGE, and very quick. I'll always be a fan of long stroke, slow rev engines though.

[madbouncy]

Yeah I like the long stroke for all the torque it gets, sucks having to pick one or the other. For a sedan the torque would probably be a lot more useful and more enjoyable. Being able to rev high is nice but the low end torque is used a lot more, and without it, it really sucks. I still remember driving my automatic corolla, from a stop, the corolla is about equal to the 240sx if I start in 2nd gear. Man, I hate corolla's, almost as much as I hate pontiacs. Well not so much corollas as automatic corollas, anything less than 100 hp should be a manual, because they're so much faster that way. It drove me crazy, glad I sold it. The pontiac thing is a long story.

[MinisterofDOOM]

I hear you on both counts. Corolla (actually any Toyota save the Tacoma, Supra, and older Celica) is a waste of sheetmetal, and pontiac should go away and stop staining the GM name. I laugh every time my aunt tells me how "zippy" she thinks her brand new V6 Camry is. I couldn't even chirp the tires. Of course, pontiac is not the only stain on GM's shirt. Certain plastic cars need to stop professing to be sports cars and go back to the cheap safe budget crap they are.

But wait...this is a Nissan forum. I'll go rip on Toyota at my own site...

[vq35de]

AEBS has a stroker kit out for the VQ to go to a 4.3 liter displacement with sleeves for the cylinder & a better deck. Pistons are available in 8.5:1, 9.?:1 and 12:1 I believe as well.

Unfortunately that stroker kit will set you back 7000.00. But with the sleeves you should be able to rev to at least 7500 with no worries and throw 1.5-2 bar of boost at the VQ.

Can you say 700 hp? with the stroker kit AND a TT kit you should see 700 reliable hp

[Altiman94]

a good powerful engine throughout the entire powerband is what should be wanted. It doesnt matter if it revs to 10k or only 5.5k. Power is power.

[SR20DEN]

Once the data on the VQ40 is release Im certain we will find that it will still be very much oversquare. It won't be ANYTHING like the KA24 because it can't physically be without making drastic changes to the block height.

Once I can obtain a VQ40 longblock it will be transplanted into my Maxima.

[SR20DEN]

VQ40DE info

http://www.nissannews.com/niss...shtml

[SR20DEN]

AEBS has a stroker kit out for the VQ to go to a 4.3 liter displacement with sleeves for the cylinder & a better deck. Pistons are available in 8.5:1, 9.?:1 and 12:1 I believe as well.

Unfortunately that stroker kit will set you back 7000.00. But with the sleeves you should be able to rev to at least 7500 with no worries and throw 1.5-2 bar of boost at the VQ.

Can you say 700 hp? with the stroker kit AND a TT kit you should see 700 reliable hp

The AEBS NA kit is actually 4.4 liters and the FI kit is 4.2 liters. I wish they would stop spreading the misinformation of calling it 4.3.

[MOTOP]

V6 KA24DE

[MinisterofDOOM]

V6 KA24DE

I was wondering that myself...

[s13sr20chris]

vq40 is oversquare. i think its like 95mm bore by 92mm stroke or something like that. i was checking the new 05 pathfinder fsm the other day. it has a taller deck height by 20mm than all the other vq motors. it has the biggest cams yet in a usdm vq as well. the valves are the same size as the others but compression is lower. i have driven one and it was ok but the weight of the pathfinder dulled it somewhat.

[mtcookson]

the VQ40 still revs up to around 6,000 rpm or so. i drove a new frontier and that thing was quite awesome. i definitely want one now.

gotta tow the Z around somehow... lol