Nissan 370Z Forum - View Single Post - Jim Wolf Cam testing for the VQ37VHR -- Results inside!

MAMotorsports · 08-08-2017, 10:18 AM

The time has come!

What you have all been waiting for is finally here. The Jim Wolf Technologies C2 Camshafts for the VQ37VHR are finally available!

I will be opening up a Group buy here in the next day or so, will post the link when I do.

Jarred was nice enough to ship his car up here last week for the final phase of testing, as we wanted a car that had the full "breather" modifications installed to really see how well they performed. Previous test vehicles used for fitment and long term testing showed that a stock platform left a lot to be desired.

Jarred's car had the following modifications when it arrived:
Z1 Intakes
Factory Intake manifold
Factory throttle bodies
Long Tube headers (Ex IMSA team, we saw very similar gains with the Fast Intentions Long Tubes)
Custom Y Pipe (Motordyne Style with 2 Cats built in)
Amuse R1000 Catback Exhaust
ECUTek Tune (We did not tune previously, was done by another well known/trusted shop)

We put the car on our dyno to get the baseline reading before any changes where made:

The car then went on the lift and the engine was removed to give room for the install.

As we replaced the cams, the following parts were also changed:

Factory Water pump
New Oil Galley gaskets
Suckerpunch Oil Pump
JWT C2 Cams, and springs.

We added the oil pump so we would be able to safely rev the engine a bit higher and make use of the cams. We see lots of talk about the limit being raised on these engines, one weak point that is easily replaced during this job is the pump. The other limiting factors are within the VVEL system, and have been found to become a problem around 8000RPM in repeated cases. It is something we will be looking into, but in most cases you will not want/need to rev them much harder as to help with longevity of the engines life. Hard Fuel cuts, and high limiters will be detrimental to the life of your VQ37VHR, so keep that in mind.

After the install the car went onto the dyno to be re-calibrated on the ECUtek software for the cams.

All in all we are very impressed with the power made over the stock configuration.

With a baseline power of 268whp and 219ftlb, and a final number of 305whp and 241ftlb the gains were very impressive.

For reference, we use a Dyno Dynamics dyno, controlled by Mainline Dyno electronics. By far one of the lowest reading dynos out there. Nicknamed the "Heartbraker" for a reason.

**Note, on this dyno graph we had a pickup issue, redline is actually 7900rpm not 7500 as noted on the sheet**

The idle is nearly stock with a slight lope, and drivability is on par with the stock cam shafts.

All in all, a great package for anyone looking to stay naturally aspirated and keep the car very drivable. After completion Jarred drove the car home nearly 14 hours. I will let him chime in with how it felt to him.

We look forward to refining the package and finding other power restrictions in the system.

For fun here is Jarred's dyno graph, laid over my 2011 370Z when bone stock.

08-08-2017, 10:18 AM	#278 (permalink)
MAMotorsports Track Member Join Date: Jul 2015 Location: Glen Arm, MD Posts: 872 Drives: 370Z Rep Power: 16	The time has come! What you have all been waiting for is finally here. The Jim Wolf Technologies C2 Camshafts for the VQ37VHR are finally available! I will be opening up a Group buy here in the next day or so, will post the link when I do. Jarred was nice enough to ship his car up here last week for the final phase of testing, as we wanted a car that had the full "breather" modifications installed to really see how well they performed. Previous test vehicles used for fitment and long term testing showed that a stock platform left a lot to be desired. Jarred's car had the following modifications when it arrived: Z1 Intakes Factory Intake manifold Factory throttle bodies Long Tube headers (Ex IMSA team, we saw very similar gains with the Fast Intentions Long Tubes) Custom Y Pipe (Motordyne Style with 2 Cats built in) Amuse R1000 Catback Exhaust ECUTek Tune (We did not tune previously, was done by another well known/trusted shop) We put the car on our dyno to get the baseline reading before any changes where made: The car then went on the lift and the engine was removed to give room for the install. As we replaced the cams, the following parts were also changed: Factory Water pump New Oil Galley gaskets Suckerpunch Oil Pump JWT C2 Cams, and springs. We added the oil pump so we would be able to safely rev the engine a bit higher and make use of the cams. We see lots of talk about the limit being raised on these engines, one weak point that is easily replaced during this job is the pump. The other limiting factors are within the VVEL system, and have been found to become a problem around 8000RPM in repeated cases. It is something we will be looking into, but in most cases you will not want/need to rev them much harder as to help with longevity of the engines life. Hard Fuel cuts, and high limiters will be detrimental to the life of your VQ37VHR, so keep that in mind. After the install the car went onto the dyno to be re-calibrated on the ECUtek software for the cams. All in all we are very impressed with the power made over the stock configuration. With a baseline power of 268whp and 219ftlb, and a final number of 305whp and 241ftlb the gains were very impressive. For reference, we use a Dyno Dynamics dyno, controlled by Mainline Dyno electronics. By far one of the lowest reading dynos out there. Nicknamed the "Heartbraker" for a reason. Note, on this dyno graph we had a pickup issue, redline is actually 7900rpm not 7500 as noted on the sheet The idle is nearly stock with a slight lope, and drivability is on par with the stock cam shafts. All in all, a great package for anyone looking to stay naturally aspirated and keep the car very drivable. After completion Jarred drove the car home nearly 14 hours. I will let him chime in with how it felt to him. We look forward to refining the package and finding other power restrictions in the system. For fun here is Jarred's dyno graph, laid over my 2011 370Z when bone stock. __________________ Daelen @ MA Motorsports MA-Motorsports.com https://www.facebook.com/pages/MA-Mo...C/125379858828 Last edited by MAMotorsports; 08-08-2017 at 10:35 AM.