JeffTsai

iTrader: (1)

Hm...I'm really thinking about making one lol. I have a few extra 2JZ's sitting around, and soon I'm gonna be picking up a spare 2JZ-GTE VVTi engine. I'm thinking that it might be possible to modify the head and journals to convert the engine to have VVTi on both intake and exhaust side. Obviously this will require sacrificing one head by cutting it up to cannibalize the VVTi mechanism. Once I cut it out, I can weld it onto the other head and use the CNC machine to get everything down to spec afterwards.

As for tuning it, I have the AEM EMS which has plenty of extra output channels to control the extra VVTi solenoid.

Some of you guys might wonder why I'm going thru all this trouble. Well, if I go through with it...I'll be the only person in the world to have a Dual VVTi 2JZ engine
Obviously I'll be experimenting with all this, but my hope is to significantly boost low end torque and speed up the spool.

Plus I have a few extra engine heads sitting around so why not give it a shot...heh.

What do you guys think?

plex

iTrader: (11)

Go for it...........with the AEM EMS there's nothing holding you back.

FlavesLex

iTrader: (1)

I think you're a mad man...LOL.... Sounds like a BIG project, but why not, go for it.

HTQCummins

That would be neat to see. If you do decide to go through w/ it please tell us how it works out. Good Luck with it

mex lex

iTrader: (4)

Damn it Jeff you're the man . This would be exciting to see, especially since it would be a first. Good luck!

kevs98GS4

iTrader: (1)

I can't wait to see what happends!

Alexus_300

iTrader: (4)

Props to you jeff. While you're at it, you mind sparing me a complete VVTI motor please. PM me your number and I'll give you a call to discuss in details...

BigGene

*Hears an eerie, mad scientist-like laugh coming from Jeff's garage*

Whatever you do, I'm sure it will kick some butt!

Richie

I like the way your mind works.

jamodeo

iTrader: (1)

Bump** any updates??

-Joe

whazzzzuup

iTrader: (11)

Are you using the AEM EMS to activate the solenoid to switch over from the lower lobe to the higher lobe (higher lift and longer duration) at high RPM?

Good luck, man!

JeffTsai

iTrader: (1)

Actually VVTi is not a simple on/off system like Honda VTEC. The VVTI is what it is...variable valve timing. The AEM can drive the solenoid at intermediate and variable positions to allow a total variable timing adjustment of up to 30 degrees.

Either way, I gave up on this project since nobody in the world makes an aftermarket camshaft for the VVTi motor. Maybe in the future when someone does make a more aggressively profiled camshaft then I will pursue this project again. I plan to make around the 800-900hp mark eventually and stock cams simply will not allow that.

kit cat

iTrader: (6)

(I know, i said this before) i seriouslly wish you could make a cylinder deactivation system. can't you just cut fuel and spark and let it compress air on one bank? Or would that throw off the balance?

Anywho...man, you just keep on pushing it to the next level.

JeffTsai

iTrader: (1)

You can't do that. The air would push back on the cylinder causing a serious loss in power. The cylinder deactivation systems actually open up the valves of the deactivated cylinders so there is no air being recompressed.

Caoboy

iTrader: (2)

You sir, are trippin. Send me a spare GTE motor if you have them just lying around lol.