44 replies to this topic

[brian]

Lets face it, these motors are getting cheaper and more abundant, its just a matter of time before more and more people start using them. So I want a dedicated thread for them.

I need to know, for those running the VVTi 1JZ, or possibly the 2JZ VVTi, are you noticing some strange tach behaviors when you rev really fast? Mine bounces around periodically, but I don't know if that is from the 3 coil ignition system (wasted spark) or if i have a bad tach driver.

Besides this, the motor has been phenomenally reliable and fun to drive. The response and power are just too much for my limited poetic ability to describe. Anyone else agree?

[TougeCrameryRollinNice]

damn, after reading you talk about your vvti 1j now i really can't wait till my cars runnin. ahhh its gonna kick freakin ass pullin up to muther fuckers in preludes and just smokin the shit out of them and then pull up next to some rich asshole in a porsche and smoke his asss, mercedes smoked, wrx imprezza....smoked...bmw smoked, audi smoked, fuck these people. you got your rich person genaric car you knew nothing about but spent a ton of money on beat by what you thought was a camery haha!
im gonna get a bar referee label cause the vvti creates cleaner emmisions and california will like that. bar ref lables make it so you don't have to risk having your car seized and crushed buy the fuckin man . im gonna run a cat & try not too rage the atmosphere so hard with CO and HC, NOX. but im gonna get a testpipe that i can put on sometimes... so hopfully im gonna put my vvti 1j in next week along with puttin in the r154 and all the massaging of the tranny tunnle blah blah blah trans crossmember, poly trans mount , que!... i'll try to take pictures... i will take pictures..... hopfully the lighting is just right.
yes i like a vvti talk thread super idea for sure. variable valve talk inteligence 6000

[Gibbs]

do you daily your cres brian? and how does the vvti feel when your in full throttle?

[brian]

good, really good.

btw, i'm an idiot i never checked back to my original thread question: http://jzxproject.com/bbs/index.php?s=&...ost&p=47600

[Joe]

whered you get your engine brian?

[brian]

whered you get your engine brian?

ebay lol. i got lucky and everything worked out.

i have another 1jz vvti sitting in my driveway for a project that i think will never leave the ground. my friend is having a baby and i think he forgot he bought it...

[ameenit]

This is going to sound retarded but.. How do you know if your vvti is actually working?

[MX83MISSILE]

I love my vvt-i , it's my daily and recently on a trip down south fla I clocked 26 mpg highway on stock boost . I have bean driving it at a bar of boost lately and I think it might get a little better mpg because of the mines tune although I have not done the math to prove it .

This is going to sound retarded but.. How do you know if your vvti is actually working?

I guess you could hook a voltmeter to the solenoid to see what it's doing or just unplug it and see if it has a fit or not

[Foompla]

I thought it was a modulated signal? voltmeter wouldnt really work right for that.

[cianide]

The signal to the VVTI soleniod is going to be pulsewidth modulated. With most multimeters what you will see is a percentage of the voltage going in. For example, if your solenoid is pulsing at 50% and your battery voltage is 14V, you would see about 7V at the solenoid.

I have been seriously considering getting one of the vvti 2jzs because it is a great benefit when you have smaller turbos on the car. It will spool faster and make more top end power when tuned correctly. My main issue right now is that I don't really see anyone who makes cams for the VVTI cars, and that is not a compromise that I am willing to make right now.

[Joe]

ebay lol. i got lucky and everything worked out.

i have another 1jz vvti sitting in my driveway for a project that i think will never leave the ground. my friend is having a baby and i think he forgot he bought it...

if you want i can make it disappear for you.

[Guy Smiley]

While doing Ian's swap I have been thinking what different oil weights would do to the VVTi. We were talking last night about trying some different oil weights to see how it would perform, more so to adjust it to temperatures here in our part of the country. The other reason I was pondering this was because he wants to put an oil cooler on the car and sometimes that can cause oil pressure changes and I want to make sure we don't do something to screw it up.

[brian]

My main issue right now is that I don't really see anyone who makes cams for the VVTI cars, and that is not a compromise that I am willing to make right now.

BC makes VVTi cams.

http://www.briancrower.com/makes/toyota/2jzge.shtml

This is going to sound retarded but.. How do you know if your vvti is actually working?

with the PFC you can watch the cam degree changes on the display.

[TougeCrameryRollinNice]

My main issue right now is that I don't really see anyone who makes cams for the VVTI cars, and that is not a compromise that I am willing to make right now.

hks valcons r made fur both 2j & 1j, but your gonna pay, but i want them, i too am going to have to pay.

http://www.greenline.jp/catalogue/fullimag...amp;name=Valcon Plus VCAM Kit Pro&car=Toyota Mark II / Chaser / Cresta JZX100 (1JZ-GTE (VVT-i))

[cianide]

I guess let me re-phrase that. I don't want to pay lots of money for mediocre JDM cam grinds.

I will never put anything BC in my car... EVER. Their cams are typically 5 to 10 crank degrees offset from the specifications on their cam cards.

It is worth mentioning in this thread that if you do not have a smallerish turbo, there is no benefit from having the VVT-I most likely. With a 42r on a 2.3L, I eliminated the MIVEC head on the car with and agressive cam set and put in a NON MIVEC head with a similarly agressive cam set for a troubleshooting step. There was about a 50-100 rpm spool difference and absolutely no difference in power.

[brian]

its dyno proven a stock turboed 1jz makes more power sooner with vvti than without - but to play devil's advocate - that also could be from the .5 higher compression in the vvti motors too. but with larger turbos, i'm not sure if vvti plays that big of a role. i haven't seen too many big turbo 1jz vvti setups in the states yet.

[cianide]

I am 100% sure that you are correct. On smaller or stock turbos, there is definitely a benefit to the VVTI. Being able to advance the cam in the lower rpms and then taper it into retard at higher rpms allows you to have the best of both worlds.

[ameenit]

i have the VVTI wired up to my haltech and i am running a VVTI 2JZ basemap that is supposed to have a VVTI setting, but i dont really notice a difference when i unplug it

[MX83MISSILE]

Wow your cars already bad ass with or without vvt-i maybe your vvt-i solenoid is Fucked . I have one out of a vvt-i 2jz-ge that I tested in my 1j so I know you can use the N/A solenoid . Anyhow my buddy Mike just scored a haltech for his vvt-i 2jz-gte and I plan on studying it when he does the install and I will especially clock how the vvt-i works . Also if you can't find a vvt-i solenoid I got the N/A one you are welcome to try it if you want .

[MX83MISSILE]

I just thought about one more thing like the v tech on a Honda vvt-i is dependent on oil pressure and I believe you need the proper oil (10-30/5-30) and if you don't already have a oil pressure restrictor on your turbo you need one to keep the proper amount of oil pressure at the solenoid for it to work properly .