Scion XB 1NZ-FE Turbo build

[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

[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.

[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.

[xbgod]

As I thought, to run the turbo grind for JUN cams you will need to Change valve springs and buckets for tappet adjustment. None of which they have. So the question is, do they work? If so, whats the numbers they are getting.

They are not even sure when they will have these items to prove their cam grinds, which are new and not regrinds. Can't figure out why a company would make something that they cant prove results from.

They do make a N/A grind which allows you to use stock springs and stock Buckets from Toyota, which you will have to find the correct sizes on your own.

So untill someone like BC comes out with a complete set-up I belive the cam regrinds with shit like Gude does is just a useless up-hill climb.

Seems like their is always some retard trying to ice-skate up-hill.

XBG

[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

[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

[xbgod]

You got it !

[xbgod]

I know that.

But depending on the grind none of them may work. Been down that road once already with schneider cams and thats also why Vance & Hines didn't want to take it on again. They did it once for Lesly in her XB and said it was a nightmare and didn't keep any of the specs. It was a one-off deal because of her race TC that they sponsor too.

XBG

[cali yaris]

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

Whatever. I have the email. I was considering becoming the USA distributor, but the price turned me off.

The fact of the matter is that JUN did not do these cams alone, there is another company involved. They have been providing the springs and retainers until JUN completes their R&D.

But since you're so sure, I won't post any more about it.

[xbgod]

I know anything can be done. And have a few ideas up my sleve. I would like to put together a complete head kit that works out of the box for everyone. But I don't think I could get enough people to buy them to make it worth the while.

It would incompus the JUN turbo cams that are not regrinds getting a head over to Jon at Ferrea and using all their valvetrain with custom springs and custom valve lengths.

We would use two different bucket sets from Toyota one set all the same for intake and one set all the same for exhaust. The cams would have to be the same exact grind everytime, for this would set the standard for the valve lengths. And i'm sure JUN could do them the same everytime since their not regrinds and made right in the CNC machine.

So here is how it would work:

1. Head ported and polished at AEBS (Advanced Engine Breathing Systems)
2. JUN Cams
3. Ferrea Valvetrain with higher rated springs, which I can have done
4. Stock buckets from Toyota for ease of use

Once Jon does the valvetrain once all specs are in and can be ordered anytime.

This would be a nice set-up out of the box no guess work, that anybody could put together. All brand new shit no regrinds no used valves no junk.

Would be about 3,900.00 without head. You would send yours to AEBS.

XBG

[xbgod]

Here is the E-mail's from JUN

JUN Auto Mechanic
3-1-7 Sekimachikita Nerimaku Tokyo
Tel 81-3-3920-4165 Fax 81-3-3594-2689
Jan 20
Dear Mr. Bibber
Thank you for refference of performance of your car. Of course our cams
are produced by casting cores.
For NA
1. 64-9.0mm
2. 68-9.5mm
For turbo
1. 68-10.5mm
Sorry we dont make valve springs yet. About NA we use them with the
stock valve springs.
Thank you,

Dear Mr. Aras
Thank you for your mail.
1. JUN camshaft set 1NZ-FE jpy 96,000
2. Transfer charge jpy 12,000

JUN Auto Mechanic
3-1-7 Sekimachikita Nerimaku Tokyo
Tel 81-3-3920-4165 Fax 81-3-3594-2689
Jan 20
Dear Mr. Bibber
If for turbo 68-10.5, you have to change valve springs for high lift
also change buckets for tappet adjustment. Sorry we dont have them yet
Can you look for them by yourself?Thank you,

Junichi

[xbgod]

One thing I'm good at..............

Getting shit no one else can get done.

XBG

[Tamago]

Originally Posted by xbgod

One thing I'm good at..............

Getting shit no one else can get done.

XBG

i get shit all day.

[PETERPOOP]

Originally Posted by xbgod

One thing I'm good at..............

Getting shit no one else can get done.

XBG

What do you do for work?

and where's that video?