Hello everybody. First post. I recently bought a 2006 Roadster with what appears to be a "Frankenstein" of an engine. It is a single intake full VVT / high rev motor. A gent on another site gave me a vague answer of it being a one year only model. But I am looking for more info, if it is available on just what exactly it is.In particular does this engine follow the same build as a normal HR? (rods, bolts, nuts, more strong / less strong / same strong as DE) etc, etc. I know it has a 7500 RPM cutoff, as I have tap-danced on that a few times now, hehe.



I have a single turbo kit for it that I am readying and I want to be sure I am not "missing" anything pertinent.

Thank everyone!

J

 

The '06 with a manual trans is a one year car. The engine is commonly referred to at the "Rev Up". I had one. Unlinke the '05, it has variable timing on both cams. Unlike the '07, it has a single throttle body. It's basically part HR and part DE. I had one. The internals are DE. The only thing to watch for is oil consumption. Google it and you'll find the TSB that tells you what to watch for and how to check if you have it.

 

Thanks. So internals are DE. Hmmm, that seems strange given its higher rated rpm and associated stress. It has zero oil consumption so I am good there. Had a leak at the oil cooler adapter, all it took was a tightening of the big nut and solved that issue. Single intake makes it very easy for me to FI it. This is gonna be fun! I need that extra power to make it perform as if it is at sea level. Where I live it breathes only 8-14K air so huge power losses. But I gotta say the handling really makes up for that loss of power in the twisties.

Curious tho - The shift light is programmable to 7200 rpm and it does not cut-out until 7500... Wonder what has been done to it?? The shift light programming is factory no?

 

If my memory is correct, you can change the shift light rpm. Should be in the owner's manual.

 

Yeah, What I am getting at it the max rpm is 7500 and not 7k as is advertised for a rev-up. Funny thing, this car came from Henderson, small world.

 

Yea - Rev Up on the '06

You have better cams and a higher flowing plenum (higher hp but lower torque). Internals have almost nothing to do with it. Rumor has it the DE internals will fail around 400 ft-lbs of torque (and the DE and RevUp are both well below that).

Your shift light is manually set using the buttons on the side of the dash ... you can set that where ever you like.

what turbo setup are you going with?

 

Thanks. I am experimenting with an electric booster of my own design. I still refer to it as a "turbo", keeps vernacular simple.

 

​​​​​​​Op strapping a leaf blower to his car

 

And mods need to move this, he doesn't have an hr

 

I have half an HR -and- I own and operate a scientific research and design lab.

 

Cool story.... still not an hr

 

Moved and perhaps we should tell the OP that Nissan designed the VQ35HR with almost 90% different parts than his rev-up engine. Doesn't make it a worse engine, but decidedly different.

 

I stand strong by my DE and tell people that the DE makes more torque than the RevUp, HR and almost as much as the VHR ... so if you're gonna round-up or round-down you may want to round-down??

and as DK said, when you really start looking at the architecture between the DE and the HR there are significant differences...

interesting though on an electric turbo - I can appreciate pushing the envelope of what's possible in the realm of forced induction but the car has been out for close to 20years ... no need to reinvent the wheel. But do as you please, it's your car and your money.

I can think of one application where a electric turbo makes sense and it's economy and not performance.

Assuming you have a stock block a simple single turbo pushing 10 to 12psi of boost will be your best bet if you want the most out of your car at your elevation.

Anty way I can convince you to remove 'Black Sabbath' from the back of your car?

 

Yes, I agree. Being a decent person would be best. Thank you.

 

Well, the age of the car has absolutely nothing to do with what I am working on. The technology I am developing into this car would most certainly transfer over to any other vehicle including motorcycles. To be blunt and quite possibly point out the obvious this is the car I am using to blueprint the design. As a scientific researcher I am skilled at re-purposing products and equipment for other domains of use. What I am doing with this project has cross-industry ramifications with military possibilities. In my past field of high military aviation we routinely use compact yet very high power electric motors for a plethora of operations. I do find your comment about "economy and not performance" eyebrow raising as is not a rise in economy also a rise of performance? Anyway, An electric booster run off of a high power alternator of say 72V and used only when requested removes ALL parasitic HP rob from say, superchargers -and- removes ALL under hood heat attributed to turbo exhaust plumbing. I am not using some new tech. These motors have been available for decades. I am simply repurposing already in-production tech for a better overall outcome. Ease of install. Ease of use. Infinite adjustability. Infinite adaptability, etc, etc.

I will say this tho about my car, after adding the 5/8 plenum spacer, the pop charger, free-flowing exhaust, and the aluminum pulleys this car "sprang" into life... And on your last part removing the name for my car so you may be pleased is not within the realm of possibility. This is my ride, my life, my choice and you should be accepting of that. I am not asking you to please me in anyway, you know.

 

What pulleys did you replace with aluminum?

 

I'm not nearly as smart as you ... but do you really want to drive a 72volt / how many amp alternator off your 3.5liter engine? charge a 72volt battery for xyz minutes/hours to get how many seconds of forced induction? I dont disagree with you on the premise but this is more related to economy that it is performance (I made this comparison with my ecoboost F150 awhile back) but there's no free lunches in nature - each action has a consequence and a reaction. Sure run a larger alternator but that requires energy and will rob torque from the wheels.

At the end of the day you're simply trading energy. How slow is the car going to be when you are not in boost and charging this battery? How big of a battery is going in the car? large enough to run your blower for more than 15 to 20 seconds? how much additional weight and complexities are you adding when it's all said and done (albeit battery technology has come a long way).

In a round-about kind of way, this is a belt driven supercharger. But you're adding another two rounds of inefficiencies (charging the battery and powering the blower motor).

(If you havent noticed) a supercharger is going to take about 50 to 200ft-lbs of torque off the crank ... I would imagine you will experience something similar.

Theres a reason an electric powered supercharger isn’t a widespread phenomena

I commend you on taking on this experiment and I hope you follow through ... I'll be your biggest cheerleader and your most constructive critic ... move forward with this and start a build thread to document the progress.

As far as the Black Sabbath ... you sound like you're a respective 40years old but 'Black Sabbath' on the back of your roadster screams you're emotionally 23 years old ... do as you please...not my car, not my decision -

 

A 72V alternator is going to cause a lot of parasitic loss under load. Probably as much as a supercharger.

I had every possible bolt-on on my '06 as well as a tune and I was making 281whp. Definitely felt quicker.

 

OP, Welcome. I wouldn't bounce off the 7500rpm limit you've set and sure as hell wouldn't mess with a leaf blower. Just saved you an engine and a whole lot of headaches.

However, I am not doubting your abilities and I will send $100 via paypal if you managed to get your concept of 72V electric blower reliably installed and dyno proven.

 

Iron man??!!?? where are you at?? Any updates??