Scion XB 1NZ-FE Turbo build

[H3LlIoN]

I'm not attacking anyone.

[PETERPOOP]

So can we see that video? :)

[KCALB SIRAY]

Originally Posted by PETERPOOP

So can we see that video? :)

I doubt it.

[cdydjded]

I stand corrected on the detonation/pre ignition. As for anything else I will comment no more.

[Blown_xa]

This is some funny shizat. haha! It's mathmatically impossible for torque curve to not cross at 5250. Only cars where is doesnt drop off much is an s2k or Formula 1 car, and that has more to do with volumetric efficiency at high rpm... which the 1nzfe will never see. The only thing we can do is maybe crazy cams and a efficient turbo set up to get good top end. Nobody is ever gonna destroke a 1nzfe.

I think people got a bit bent of shape here. Its basic knowledge on what afr should be, I highly doubt the tuner is oblivious to that.

[ilikerice]

ive been reading and keeping up with all the forced induction threads on here to get an idea of where i may go with my yaris.. and this thread has turned into just a soap opera for me.. i cant wait for my next break or when i get home to read the next post..

anywho, with that out of the way, i need to get on the same page here.. are you guys arguing about the Torque curve dropping or the Horse Power curve dropping? cuz if its the torque curve, then im 100% with blown xa on this one.. but if its the power curve, then i have my own theory's that i do agree with a couple of you but im not as knowledgeable as everyone else here to argue any side. but i am learning a shit load of things the yaris is capable of and not capable of, and i thank all of you for everyones input

[xbgod]

Well here we go again.

Junichi Tanaka from Jun Performance has seen my build and is in correspondance with me on doing a set of cams for my XB. Not sure on all the details yet. But I do know they are not regrinds and there stuff looks alot nicer than Gude.

XBG

[Scubaru Steve]

Originally Posted by xbgod

Well here we go again.

Junichi Tanaka from Jun Performance has seen my build and is in correspondance with me on doing a set of cams for my XB. Not sure on all the details yet. But I do know they are not regrinds and there stuff looks alot nicer than Gude.

XBG

mmm cams!!!
any idea on duration and lift? 272* 9mm lift?
im not even sure what stock is

[xbgod]

The cams them self aren't my biggest concern. It's the clearence with the buckets and if I will need different springs.

Waiting on Junichi to get back with me on this. Should know tonight where we stand.

XBG

[Scubaru Steve]

Originally Posted by xbgod

The cams them self aren't my biggest concern. It's the clearence with the buckets and if I will need different springs.

Waiting on Junichi to get back with me on this. Should know tonight where we stand.

XBG

i wonder how aggressive the cams can be without major head mods. added duration is sweet, but the lift is what makes the huge difference.

im interested to here what they say.

[cali yaris]

I think people got a bit bent of shape here.

Uh yeah, calling people haters will sometimes do that.

I looked at the JUN cams too, but at $1600 a pair, it was out of my range for the HP they would give.

[cali yaris]

JUN cams come in three grinds, street, n/a and turbo. They are all in stock and ready to ship. They come with springs and retainers.

However, as you say, I have been unable to get any information on what car they were tested in (if they were tested) and what the results were.

So I pass for now.

Here are the specs:

1. 256 duration, 9.0mm lift (Street)
2. 272 duration, 9.5mm lift (NA)
3. 272 duration, 10.5mm lift (Turbo)

[xbgod]

They do not come with springs or retainers. I just spoke with Junichi who owns the place.

At least this holds true for the turbo application and the N/A.

So this still leaves me with having someone else make the buckets.

XBG

[cdydjded]

Originally Posted by xbgod

They do not come with springs or retainers. I just spoke with Junichi who owns the place.

At least this holds true for the turbo application and the N/A.

So this still leaves me with having someone else make the buckets.

XBG

What me to talk to Ferrera about the buckets? Im a dealer for their products.

[xbgod]

Don't need to do that either. I'm good friends with Jon Ferrea. I had the valves springs lockers and so fourth made years ago. And can buy the stuff for, well lets just say dirt cheap. he's only 2 hours from my house in Fl. Buckets on the other hand would be a different beast altogether. Your talking about a possibility of 16 different bucket grinds. Not to mention he would need my head and alot of down time to set it up check all the clearences and so fourth. Just alot to ask without a substancial payout. This is what would be time consuming. Which is where Gude thinks he has the market. But his Remidy is shitty. Now you could do backwards math and make a different set of valves to make up the difference for the buckets. again will be time consuming. Either way this is a huge take-on. But one that needs to be done.

XBG

[cdydjded]

Originally Posted by xbgod

So this still leaves me with having someone else make the buckets.

XBG

Are you calling "the buckets" what Toyota refers to as "the lifter"? Basically its like a cup that goes on top of the spring/retainer & is were the cam lob makes contact to open/close the valve.

[xbgod]

You got it !

[cdydjded]

Originally Posted by xbgod

You got it !

Well than thats not a problem. Toyota makes Lifters/Buckets in 35 sizes in increments of 0.020mm (0.0008 in.), from 5.060 mm (0.1992 in.)
to 5.740 mm (0.2260 in.).