Z1 Motorsports: Highest Horsepower N/A Stock Internal/Stock Cams HR?
04-02-2013, 06:18 PM
#1
Z1 Motorsports: Highest Horsepower N/A Stock Internal/Stock Cams HR?
First, I would like to introduce myself to the VQ35HR section. I am Rob Harper from Z1 Motorsports located in Carrollton, GA (45mins west of ATL). Service Manager is my title, but I also do a great deal of testing/development.
After recent success experimenting with the Z1 370Z, which produced 342rwhp with stock internals/stock cams (exhaust cams of course), I was able to get my hands on our recently purchased Nismo 350Z. This car will be completing in several racing classes throughout the NASA season, and is currently setup to run Time Trials.
After receiving our first Tomei Ti Expreme single exit exhaust, I was excited to try a few ideas. Of course we cannot disclose all modifications, but they include Z1 equal length headers (available very soon), Z1 Test pipes, Tomei Ti Expreme Single exhaust, Z1 Prototype Intakes, and of course Uprev/Osiris Dyno Tuning on our in house DynoJet utilizing 93 Octane Pump fuel. The car still has completely untouched internals, including the stock cams.
Our baseline was 254rwhp/222ft-lb for those who question the dyno results, our BOLT ON modifications yielded a 68rwhp and 62ft-lb peak gain over stock.
In the near future, we plan to install a set of custom spec'ed Tomei Pro Cams. I will update this thread with the results of such testing.
After recent success experimenting with the Z1 370Z, which produced 342rwhp with stock internals/stock cams (exhaust cams of course), I was able to get my hands on our recently purchased Nismo 350Z. This car will be completing in several racing classes throughout the NASA season, and is currently setup to run Time Trials.
After receiving our first Tomei Ti Expreme single exit exhaust, I was excited to try a few ideas. Of course we cannot disclose all modifications, but they include Z1 equal length headers (available very soon), Z1 Test pipes, Tomei Ti Expreme Single exhaust, Z1 Prototype Intakes, and of course Uprev/Osiris Dyno Tuning on our in house DynoJet utilizing 93 Octane Pump fuel. The car still has completely untouched internals, including the stock cams.
Our baseline was 254rwhp/222ft-lb for those who question the dyno results, our BOLT ON modifications yielded a 68rwhp and 62ft-lb peak gain over stock.
In the near future, we plan to install a set of custom spec'ed Tomei Pro Cams. I will update this thread with the results of such testing.
Here are the results.
Gains vs Stock
Here's the car at Road ATL a few weeks ago for its first time out, on stock suspension it turned a 1:38.5. That was also with around 20rwhp less.
Gains vs Stock
Here's the car at Road ATL a few weeks ago for its first time out, on stock suspension it turned a 1:38.5. That was also with around 20rwhp less.
Last edited by Rob@Z1; 04-03-2013 at 06:29 AM.
04-02-2013, 06:31 PM
#2
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Wow! nice numbers, and I love the H.P/turq. power curves.
I'm interested in some H.P. Will be looking into your progress.
Meanwhile, wanne race????
I'm interested in some H.P. Will be looking into your progress.
Meanwhile, wanne race????
04-02-2013, 06:38 PM
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When I started playing with my Z 3 years ago
I asked a Top shop in the N. East, what should I do to get a few more H.P. They suggested cams. What? I love those cams. Why anybody would change cams that work great at low rpm & produce H.P up to & over 7.5 K, I will never understand.
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04-03-2013, 06:21 AM
#14
They have been in development for several years, unfortunately we have yet to finalize and produce them but we are getting close.
For those interested, we were able to milk 310rwhp out of the stock intakes with K&N drop ins. This goes to show that you don't *have* to have intakes to make 300+.
Here's the before/after of our prototype intakes.
Also, I just realized I didn't post the highest overall graph. We actually made 280ftlb on the pull after the one in my original post.
For those interested, we were able to milk 310rwhp out of the stock intakes with K&N drop ins. This goes to show that you don't *have* to have intakes to make 300+.
Here's the before/after of our prototype intakes.
Also, I just realized I didn't post the highest overall graph. We actually made 280ftlb on the pull after the one in my original post.
Last edited by Rob@Z1; 04-03-2013 at 06:28 AM.
04-03-2013, 07:43 AM
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They have been in development for several years, unfortunately we have yet to finalize and produce them but we are getting close.
For those interested, we were able to milk 310rwhp out of the stock intakes with K&N drop ins. This goes to show that you don't *have* to have intakes to make 300+.
Here's the before/after of our prototype intakes.
Also, I just realized I didn't post the highest overall graph. We actually made 280ftlb on the pull after the one in my original post.
For those interested, we were able to milk 310rwhp out of the stock intakes with K&N drop ins. This goes to show that you don't *have* to have intakes to make 300+.
Here's the before/after of our prototype intakes.
Also, I just realized I didn't post the highest overall graph. We actually made 280ftlb on the pull after the one in my original post.
I was thinking of modifying my "stock" intakes from the boxes back to the throttle bodys. I'd rather buy a finished & tested product. Will you be able to keep me in mind when it's available, or keep that topic updated.
Thanks
Last edited by andre12031948; 04-03-2013 at 07:49 AM.
04-03-2013, 10:26 AM
#19
http://www.z1motorsports.com/350_g35...oducts_id=4749
http://www.z1motorsports.com/350_g35...oducts_id=6917