JUN exhaust cam shaft finally arrived

Navyboy916 · 11-11-2012, 04:47 PM

The heads are currently being worked by the GTM they started working on the heads. I hope they are done soon cause the car being down really sucks right now. I know once I get them back it will be sweet. I also just bought the HD flex plate for the transmission. I have read some people changing the pistons and rods and actually working the bottom end. I want to keep the bottom end stock right now I have only 8500 miles on the car and the block is pretty stout. GTM even told me that the heads on our motors is where the power is and unleashing that power might not make power close to a turbo or supercharger kit but the reliability is still there and hearing that engine scream is music to my ears. Plus, I still smash on FORDS all day.

EastBayZ · 11-14-2012, 03:12 AM

sick

indyn · 11-14-2012, 01:05 PM

Quote:

Originally Posted by Navyboy916

The cams were just suppose to just be installed but when looking at the cam profile the stock valve springs and retainers might not be able to support the cams. After purchasing the valve train the Nissan dealership has to pull the heads off to swap out the valve train and with them off I called Gtm to actually have the head work done and at the same time reassemble the heads with the new valve train and cams installed with new arp head bolts to. I am sending the heads off today.

Navyboy, was it recommended to swap the valve train when doing this mod. Does JUN recommend it as well?

GarageLine.com · 11-14-2012, 02:21 PM

Quote:

Originally Posted by indyn

Navyboy, was it recommended to swap the valve train when doing this mod. Does JUN recommend it as well?

I asked Circuit Concepts:

Quote:

Dear Jermaine

These camshafts are designed for the Nissan stock valvesprings.

Regards

Navyboy916 · 11-14-2012, 02:56 PM

When I talked to JUN they said the stock valve train could be used but they couldn't promise that they would last due to the high duration of the cams. They are currently making the new valve train set to go along with these cams. They said it goes hand in hand when swapping the cams out you should swap out the valve train. That was from JUN. I am spending the extra money and doing this right cause if you break something internal the consequences could be worse then if you just swapped the parts out.

red6spd · 11-14-2012, 03:12 PM

Much smarter doing it the way your doing, there is no such thing as cheap and reliable. Hopefully this cab be a much cheaper alternative to a TT or SC setup and make some decent power... Fingers crossed.

Navyboy916 · 11-14-2012, 03:14 PM

Everyone knows the saying "You pay to play"

Navyboy916 · 11-14-2012, 03:37 PM

I have read a lot of these post and notice that people have their idea of what is going to make power with these motors. I told myself just stick with the bolt ons and then work on the heads cause no matter how technologically advanced these motors become the basics of engine building still has to be considered so with any motor the true power lies in the heads. This is for everyone stick to the basics and remember the JUN cams are exhaust cams only.

SS_Firehawk · 11-14-2012, 04:22 PM

Up until recently, we only had half the equation to work with regarding the heads. With VVEL tuning in it's infancy, and these cams, this is truly a ground breaking time for the VHR's. Getting your heads done @ GTM is like icing on the cake. I won't doubt that within a year, UPrev will be including an upcharge for VVEL tuning on top of their normal etuning services.

Z eliminator · 11-14-2012, 07:24 PM

" HD flex plate for the 7 AT " what is that

Z

Navyboy916 · 11-14-2012, 08:32 PM

It's a heavy duty plate that is attached to the engine that connects the crank to the transmission. Like the flywheel for a manual

Navyboy916 · 11-15-2012, 12:21 AM

As of right now I am not planning on swapping out the gears. I might later when i get back to the states. Here is a pic of my new motor mounts from Z1 Motorsports.

These should help with the flexing of the motor they are really stout and well made.

Staples · 11-15-2012, 12:35 AM

Quote:

Originally Posted by Navyboy916

As of right now I am not planning on swapping out the gears. I might later when i get back to the states. Here is a pic of my new motor mounts from Z1 Motorsports.

These should help with the flexing of the motor they are really stout and well made.

You're probably going to get a lot more vibration in the cabin.

Navyboy916 · 11-15-2012, 12:55 AM

Z1 tested these out and these being urethane had no vibration at all.

Z eliminator · 11-15-2012, 07:54 AM

Where did you get the HD flex plate from?
I had mine heat treated at GTM.
It on the car now with the stage 4 GTM tranney.
Still have to put the flash in it.
With the stock fuel curve in the car it pulls way harder than my stock 7 AT.

Z

11-11-2012, 04:47 PM	#331 (permalink)
Navyboy916 Enthusiast Member Join Date: Jul 2011 Location: Hawaii Posts: 434 Drives: 2010 370z 7AT Rep Power: 14	The heads are currently being worked by the GTM they started working on the heads. I hope they are done soon cause the car being down really sucks right now. I know once I get them back it will be sweet. I also just bought the HD flex plate for the transmission. I have read some people changing the pistons and rods and actually working the bottom end. I want to keep the bottom end stock right now I have only 8500 miles on the car and the block is pretty stout. GTM even told me that the heads on our motors is where the power is and unleashing that power might not make power close to a turbo or supercharger kit but the reliability is still there and hearing that engine scream is music to my ears. Plus, I still smash on FORDS all day. docaam, edub370 and VQStryker like this.

11-14-2012, 03:12 PM	#336 (permalink)
red6spd A True Z Fanatic Join Date: Apr 2010 Location: Long Island NY Posts: 3,277 Drives: 2010 Z Coupe M6 SPT Rep Power: 21	Much smarter doing it the way your doing, there is no such thing as cheap and reliable. Hopefully this cab be a much cheaper alternative to a TT or SC setup and make some decent power... Fingers crossed. __________________ 2010 Base+Sport 6spd: Stillen G3, FI Non-Resonated CBE, FI Non-Resonated Test Pipes, UpRev Tuned, Custom 24R Oil Cooler, JDM Rear Fog-OEM Harness. ???Whp ???WTQ (Will find out come spring time)

11-14-2012, 03:14 PM	#337 (permalink)
Navyboy916 Enthusiast Member Join Date: Jul 2011 Location: Hawaii Posts: 434 Drives: 2010 370z 7AT Rep Power: 14	Everyone knows the saying "You pay to play" red6spd likes this.

11-14-2012, 03:37 PM	#338 (permalink)
Navyboy916 Enthusiast Member Join Date: Jul 2011 Location: Hawaii Posts: 434 Drives: 2010 370z 7AT Rep Power: 14	I have read a lot of these post and notice that people have their idea of what is going to make power with these motors. I told myself just stick with the bolt ons and then work on the heads cause no matter how technologically advanced these motors become the basics of engine building still has to be considered so with any motor the true power lies in the heads. This is for everyone stick to the basics and remember the JUN cams are exhaust cams only. roy'sz likes this.

11-14-2012, 04:22 PM	#339 (permalink)
SS_Firehawk Premium Member Join Date: Oct 2011 Location: Tampa Posts: 4,142 Drives: 13' Magma Red Nismo Rep Power: 7335	Up until recently, we only had half the equation to work with regarding the heads. With VVEL tuning in it's infancy, and these cams, this is truly a ground breaking time for the VHR's. Getting your heads done @ GTM is like icing on the cake. I won't doubt that within a year, UPrev will be including an upcharge for VVEL tuning on top of their normal etuning services. __________________ Old Car:GTM TSC'd 550whp / 410lbft tq @ 11.88PSI New Car: Under Construction

11-14-2012, 03:12 AM	#332 (permalink)
EastBayZ Base Member Join Date: Dec 2011 Location: Newark, California Posts: 54 Drives: 011 370Z Tour Spt MT Rep Power: 14	sick

11-14-2012, 02:56 PM	#335 (permalink)
Navyboy916 Enthusiast Member Join Date: Jul 2011 Location: Hawaii Posts: 434 Drives: 2010 370z 7AT Rep Power: 14	When I talked to JUN they said the stock valve train could be used but they couldn't promise that they would last due to the high duration of the cams. They are currently making the new valve train set to go along with these cams. They said it goes hand in hand when swapping the cams out you should swap out the valve train. That was from JUN. I am spending the extra money and doing this right cause if you break something internal the consequences could be worse then if you just swapped the parts out.

11-14-2012, 07:24 PM	#340 (permalink)
Z eliminator A True Z Fanatic Join Date: Jul 2009 Location: Ontario Canada Posts: 1,659 Drives: 370 Z 7AT Sports Rep Power: 19	" HD flex plate for the 7 AT " what is that Z __________________ 12.343 @114.14 . 4.5 stroker motor is now being built. Dec 1 2015.

11-14-2012, 08:32 PM	#341 (permalink)
Navyboy916 Enthusiast Member Join Date: Jul 2011 Location: Hawaii Posts: 434 Drives: 2010 370z 7AT Rep Power: 14	It's a heavy duty plate that is attached to the engine that connects the crank to the transmission. Like the flywheel for a manual

11-15-2012, 12:55 AM	#344 (permalink)
Navyboy916 Enthusiast Member Join Date: Jul 2011 Location: Hawaii Posts: 434 Drives: 2010 370z 7AT Rep Power: 14	Z1 tested these out and these being urethane had no vibration at all.

11-15-2012, 07:54 AM	#345 (permalink)
Z eliminator A True Z Fanatic Join Date: Jul 2009 Location: Ontario Canada Posts: 1,659 Drives: 370 Z 7AT Sports Rep Power: 19	Where did you get the HD flex plate from? I had mine heat treated at GTM. It on the car now with the stage 4 GTM tranney. Still have to put the flash in it. With the stock fuel curve in the car it pulls way harder than my stock 7 AT. Z Navyboy916 likes this. __________________ 12.343 @114.14 . 4.5 stroker motor is now being built. Dec 1 2015.

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