Well I just asked JUN if, all power gains aside, these would be ok to run on a stock motor or if the additional modifications they made would be necessary (primarily the fuel injectors and the ECU). Hopefully they get back to me soon.

But it is 11PM over there right now, so I may have to wait a bit. lol

I will shoot another email to Uprev and see what they say.

can the JUN cams be used with exhaust camgears? Jim Wolf Technology website

I would like to know if I can install this cam on a stock engine and how many hp it can add?

Anyone know about the Stillen pulley if it work good or no?

I'm waiting back to hear from JUN on the stock engine question. They are all sleeping right now over in Japan so hopefully I will get an answer later today.

Well I got a response from JUN, albeit a short one. I asked them if one would need the larger injectors and ecu tune they used in their install to run these cams and they said they were not needed.

Cool? LOL.

Interesting.

Okay, somebody with cash and an extra car, buy these and try them out :icon17:

Yeah, it was literally one of the most worthless responses I've ever gotten. They offered no explanation at all. But you shouldn't have to run new pistons and rods to install cams and if the injectors and tune aren't needed either then I guess that means you should be able to drop them in a stock block no problem.

Okay...that tells me all I want to know. It won't do crap for you if you don't need a tune. Any internal engine mod that doesn't need a tune on a non-adaptive ECU is about the height of stupidity on a "new" car imo.

With a lift like 11mm I am pretty sure you will need to change out the valve springs. With that lift and duration revving pretty high chances are pretty good you will float a valve. If they do not offer a spring I would highly recommend finding out what spring you should use and how much seat pressure (open and closed) you will need to run. Also installed height and where the coil bind will be. I will try and do some more research on this over the weekend.


-Adam

:icon18::icon18::icon18::icon18::icon18:

My best guess as to why they said you dont need a new tune is due to the fact that you will physically have to time the cam. This is only the exhaust cam and the vvel is only on the intake. I could be wrong, Im just making an assumption.

So these cams with new springs valves etc would make some serious power? I mean even if we have to change out the whole valve train and maybe injectors this might still be a cheaper option then 10K plus for a TT or SC even if we dont make the same power

I need more power. Lol ��

They claim ~30hp. Order up a set if that is worth it to you.

Im mainly interested to see what these would do on a car with full bolt on's and no other engine work. Long tube header's, full catback and stillen gen III. If it showed decent power gains i would be in for a purchase.

I think that's what everyone wants to know. The problem is that it's a decent investment in both money and down time for something that MAY provide some gains. Not a lot of people willing to take that risk so that we can all know.

Understandable

That's why I hate when companies do before and after dynos for a product, but add more than just said product on the after dyno. The fact that JUN did a whole lot more than the cams leads me to believe that without the other parts the dyno graph wouldn't have shown much of a difference and therefore would have made the cams much harder to sell.

Hopefully my fears are misplaced, but like I said in my other post, until someone ballsy enough (or someone that just has money to burn) picks up a pair and slaps them on a car with a stock engine we wont know how much of the additional horsepower on the graph is from the cams and how much of it was from the higher compression pistons.

Ok so I just called Nissan for a quote on the labor for installing these cams and installing new valve springs. I asked and the guy put me on hold, when he came back he said thyley don't do that there. So a very reputable Nissan dealership doesn't do any engine work on there own car's. That's good to know!!!

They designed these cams for a collaboration car with a customer/partner shop of theirs, so that's why you unfortunately see a fully modded motor being used with the cams. This is the car that the cams were spec'd on: http://www.the370z.com/exterior-inte...er-design.html

Sub'd.

Somebody in here needs to make like a Nike shoe and

"JUST DO IT!"

At the very least, those wondering what gains they would get from a full N/A build now have an answer. High comp pistons, rods, exhaust yields only 25whp gain. I know details are missing but that doesn't seem worth it to me.

I am this close to ordering these cams, just need some1 to point me in the right direction and tell me what it is I need to buy exactly will buying the cams be enough or will I have to buy the package that jun suggested ? The sooner u guys answer me the sooner I'll pull the trigger on these bad boys :D

Will I have to buy support mods or will the work ok with the oem ?

Your best bet is to call Jun. I imagine you need the package they specced out.

I contacted jun and they did not provide much information other than the package please some one chime in

You shouldn't need anything more than the cams and an uprev tune (might not need that). Jun is going to recommend the entire package, that's how they make their $.

So these cams will work just fine with the oem springs etc? Won't I need support mods

It should work with oem springs but I would throw down for some aftermarket springs. I don't think you'll need to modify the valves and heads otherwise. If I was doing this I would go into it with springs, cams and most importantly a tuner I trust because this has not been done before outside of Jun.

Interesting......sub'd.

Where can I purchase aftermarket springs ? And what brand and specs must they be?

Realistically speaking, it makes sense to run their package...the question is whether you actually need to replace the VVEL actuator, which is the only really expensive part...

The issue surrounding the need for aftermarket springs is an unknown factor. Also it is important to find out what tuning solution Jun used. If these cams require Jun's own tuning program exclusively I'd pass.

If I run there whole package will it be harder to install the parts? And will it be hard to replace the vvel actutator? Does it matter if the cars ecu is US European Japan or gcc spec?

I don't think it needs a tune as they said no need for any kind of tune

Honestly bro, if you take the plunge and keep us in the loop during the install, we'll all try to help you out with the forum's collective knowledge.

I'll take the bullet for my fellow forum friends and go with it will be contacting 370ztune because I see that they sell them on their site I just hope that jun provides detailed install manual in English lool

Btw no one told me where I can get the springs from?