When you're trying to squeeze every bit of power out? Yes, absolutely. I'd buy them. Granted, I'd do my own labor, but if it really came down to it I'd get my heads built at the same time... kill two birds with one stack of Benjamins.

yeah im thinking of delaying my header install now until stage 2 numbers come and and do it all in one to save some money.. im trying to see when they will have a time frame of when stage 2 will be out.. they are working on it now..

Well people spend 2k,3k or even the average $1,500 on an exhaust that nets less power. why isn't that ever considered a waste of money?

When you wanna stay NA, cams are simply exciting news. I feel fortunate to now have this option. I was very upset coming into the 370z platform and finding out our heads were already perfect or with VVEL hindered things. I Did the cams on my 350z and loved it! I wasn't even gonna install LTH headers because it seemed like a pain for the money. Now that we have Cams i will do headers to optimize HP. I was getting bored with my car anyways. So I'm just so happy we have cams now!

Let hope for within next 6 months.

If you know of any other N/A mod that can give me a torque curve like the graph that was shown above, let me know.

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exhaust valve lift
 

I notice in the 2012 service manual that the bank 2 exhaust cam has about 1.7mm more lift than bank 1. Do these cams have a similar lift difference for bank 1 and bank 2?


Edited typo on cam lift.

This is great news as I don't want to raise the rev limiter too much past 7.5k RPM.

That is strange, the JWT units are identical side to side but let me talk with them and see about this. There have been some weird changes to these motors over the years.


-Daelen

You shouldn't raise the rev limiter for any reason, the oil pump isnt efficient padt 7500 rpms

I'm sure the price Kyle quoted is if you give him the heads off the motor already. This is just machining costs and assembly of just the heads. Not actual tear down and reinstall.

Yup sorry i didn't add that.

sub

Have tried to keep up with all the PMs and everyone should have a response! Let me know if you have any other questions as I am more than happy to answer!

This is a huge step in the right direction with these motors and I am excited to keep going.


-Daelen

a very worthwhile mod. would look into this whenever the time comes for a motor rebuild.

There isnt more lift on one side of the head, the cam is offset on the bucket and runs at a different ratio in order to retain the same timing equipment as previous vq engines. It was cheaper for nissan to make one different cam than to make all new length chains and alter the disign of the block. The vvel is different on each head for the same reason one appears to have more lift than the other. But is actually the same at the valve. Also @ MA Motorsports whats up ray?(unsure who's managing forum duty) i spoke with you a few years ago at the FD of long beach when the shiz happened with essa. Had a bunch of life crap happen. Im working on a new vk56 project will call the shop next week.

Edit: also at seb my old car is still holding strong with the drysump and ati balancer new owner may be interested in doing 500bhp 9000rpm. Im doing a custom rpm rollbar in it(which fit like **** btw) and i know we already have the airflow so i will give you a call next week as well. hes out your way in ojai and i am way too busy to do it.

Sounds good. Hope all is well.

So your saying that the CAMS ARE ACTUALLY different and this needs to be taken into account by aftermarket?

Spot on, and this is Daelen but I will get the message over to Ray! Holler if you need any VK info, we are always working on some fun stuff with those.



Jim wolf is very aware of the situation and this was taken into account. The OE measured the lift from the "base circle" of the cam, and JWT based the design off that also. So the lift/duration does not vary from side to side but the base circle will, the same as the OE. All due to the VVEL system and how Nissan set up the heads.

Also just for future search's:

For the DLC coating on the cam buckets, the 2009 model year for the G7 and 370Z was the only year that some cars came with a motor that did not have the DLC coated exhaust cam buckets. These will need to be purchased to do the install due to how the cams are designed tolerance wise. So make sure you or your installer are aware of this when opening the heads.


These are a mild 263* cam, so as you can see we have more room to make some power with a cam that is more aggressive.

Is there a way to find out if.your car didnt come with the dlc coating?

Sadly at this time there is not. After going over all the info Nissan offers in FAST there is not one distinguishing factor other than the model year 2009 (Ends in September for Nissan, and October for Infiniti) So if you have a 2009 and want to prevent down time ordering the buckets is not a bad idea. Otherwise most dealerships can get them asap(As can we)

When i get home ill check mine, pricing on the dlc buckets?

List is $21.63 each(12 needed) so expect around that but a little cheaper normally.

Ok thanks

my car says 11/08

Also Daelen i noticed after having to describe it in another thread but the initial write up you had on the first page you state to "re-place" the vvel components on the back of the head but it should be clarified so there is no confusion that there is a lengthy not so well described process in the fsm for aligning the control shaft to the actuator and motor, and then for aligning the sensor and actautor once back in the car that should be followed to prevent timing/vvel errors/strange running behavior once reassembled. I just wanted to throw it out there due to the number of times i've seen someone service the cams only to run into problems at startup and have to tear it all apart again to fix it. I'm sure you guys did it but it is often overlooked in the whole process.

You are 100% correct on this.

This post was meant to be a "Hey, this is the REAL BASIC run down of what we had to do" so people didn't have to scroll through all 1500 pictures I took of it haha. Its a very detail oriented task for sure.

If I already have headers, will I still see similar gains on top of what i already have? Now I am pretty excited to see stage 2 paired with an improved intake manifold that several groups are working on. If they work together for good gains, I might have to give Sebz some more money.

Pretty sure you will see the same gain's give or take a few..
i'm still waiting to see the stage 2 gains and hoping it will be released here soon.hoping for more horsepower up top..

The car had an Uprev tune before the install. Was it still Uprev or Ecutek? If it was Ecutek, then some of those gains could be form that as well as the cams. If it was still Uprev afterwards, than we can say it was attributed just from the cams.

Honestly it is hard to say, all signs point to yes, if not even more torque due to the increased exhaust flow. Intake wise, I honestly im not sure that any of the aftermarket intakes I have seen will add any power to NA motors. The factory intake is pretty well designed, just cant handle crazy boost pressures.

Spot on, the goal is to have the Stage 2s in a car in the next couple months.


We changed absolutely nothing other than Cams to keep it a controlled test. Same weather, UpRev tune with only the addition of the cams.

Can you post a video of the car idling and driving so we can hear how it sounds?

Any videos for sound?

Let me see if I can find some! There was one on the dyno, but all you can hear is the dyno.

It idles like stock honestly.

TiTs good to hear that it idles like stock.

Does the motor really need to be taken out? I feel like I could do that install with the motor still in the car, does anybody have any experience with head work without removing the motor please chime in. I would lIke a mod like this but that install looks kind of crazy.

So I found a real crappy video from after we put them in. Hit up the customer to see if he can stop by one of these days.


As for doing it in the car, we have done it. Saves you MAYBE 2 hours, and adds a large amount more curse words, and anger. 100% worth it to pull the engine.


Its best to pair it with other parts, long tubes are a good example as installing those with the cradle dropped is much easier also.

I'm waiting for stage 2 to see the gains and how that sounds and also for a new manifold to go with and maximize it.

This mod would get done when I'm ready to drop a built motor in. If I was staying N/A though, this mod would've been very convincing to get done during tax refund season.... Torque wins races. HP wins trophies.