+ 370z vs bolted 350z HR +
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Joined: Apr 2005
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From: San Diego
I have to tell you guys, the HR is really a fantastic engine when put to proper use. I drive a lightened 03' DE on road courses. I drive them a lot. I had the pleasure of instructing at an event about two weeks ago, and my student, and friend, was driving his HR with bolt-ons. That engine is incredible. It has more power, higher-rev, plentiful torque band, etc. To the point where I was said to myself, "I have to sell my DE and get an HR for tracking."
We were able to use 3rd gear for the entire track minus the main straightaway where we used 4th, where-as I use 3rd and 4th for the same parts he was in 3rd, and use 2 through 5th on that same straight that he used 3-4. Both cars have stock gearing. I was impressed.
We were able to use 3rd gear for the entire track minus the main straightaway where we used 4th, where-as I use 3rd and 4th for the same parts he was in 3rd, and use 2 through 5th on that same straight that he used 3-4. Both cars have stock gearing. I was impressed.
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Joined: Feb 2010
Posts: 71
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From: TX
I have to tell you guys, the HR is really a fantastic engine when put to proper use. I drive a lightened 03' DE on road courses. I drive them a lot. I had the pleasure of instructing at an event about two weeks ago, and my student, and friend, was driving his HR with bolt-ons. That engine is incredible. It has more power, higher-rev, plentiful torque band, etc. To the point where I was said to myself, "I have to sell my DE and get an HR for tracking."
We were able to use 3rd gear for the entire track minus the main straightaway where we used 4th, where-as I use 3rd and 4th for the same parts he was in 3rd, and use 2 through 5th on that same straight that he used 3-4. Both cars have stock gearing. I was impressed.
We were able to use 3rd gear for the entire track minus the main straightaway where we used 4th, where-as I use 3rd and 4th for the same parts he was in 3rd, and use 2 through 5th on that same straight that he used 3-4. Both cars have stock gearing. I was impressed.
I have to tell you guys, the HR is really a fantastic engine when put to proper use. I drive a lightened 03' DE on road courses. I drive them a lot. I had the pleasure of instructing at an event about two weeks ago, and my student, and friend, was driving his HR with bolt-ons. That engine is incredible. It has more power, higher-rev, plentiful torque band, etc. To the point where I was said to myself, "I have to sell my DE and get an HR for tracking."
We were able to use 3rd gear for the entire track minus the main straightaway where we used 4th, where-as I use 3rd and 4th for the same parts he was in 3rd, and use 2 through 5th on that same straight that he used 3-4. Both cars have stock gearing. I was impressed.
We were able to use 3rd gear for the entire track minus the main straightaway where we used 4th, where-as I use 3rd and 4th for the same parts he was in 3rd, and use 2 through 5th on that same straight that he used 3-4. Both cars have stock gearing. I was impressed.
Already have and also loved it! 
I'm driving the 370 in this video, as the owner and I swapped cars for the last session (he is in my silver 350). The 370 has 4.08 gears, the 350 has stock 3.5 gears. Both cars have bolt-ons, and the 350 is lightened a net of just over 200#:
http://www.youtube.com/watch?v=dUCVRiyjHoo
This is us in our own cars (me in the 350, him in the 370) having a little fun together (I catch the 370 around the 2min mark):
http://www.youtube.com/watch?v=sFuOcX4MQ_U
Fair enough and point absolutely taken. If money was no object and I had to keep it in the Nissan Z family, I would buy-and-gut a 370Z tomorrow.
I'm driving the 370 in this video, as the owner and I swapped cars for the last session (he is in my silver 350). The 370 has 4.08 gears, the 350 has stock 3.5 gears. Both cars have bolt-ons, and the 350 is lightened a net of just over 200#:http://www.youtube.com/watch?v=dUCVRiyjHoo
This is us in our own cars (me in the 350, him in the 370) having a little fun together (I catch the 370 around the 2min mark):
http://www.youtube.com/watch?v=sFuOcX4MQ_U
Fair enough and point absolutely taken. If money was no object and I had to keep it in the Nissan Z family, I would buy-and-gut a 370Z tomorrow.
Already have and also loved it! I'm driving the 370 in this video, as the owner and I swapped cars for the last session (he is in my silver 350). The 370 has 4.08 gears, the 350 has stock 3.5 gears. Both cars have bolt-ons, and the 350 is lightened a net of just over 200#:
This is us in our own cars (me in the 350, him in the 370) having a little fun together (I catch the 370 around the 2min mark):
Fair enough and point absolutely taken. If money was no object and I had to keep it in the Nissan Z family, I would buy-and-gut a 370Z tomorrow.
I'm driving the 370 in this video, as the owner and I swapped cars for the last session (he is in my silver 350). The 370 has 4.08 gears, the 350 has stock 3.5 gears. Both cars have bolt-ons, and the 350 is lightened a net of just over 200#:This is us in our own cars (me in the 350, him in the 370) having a little fun together (I catch the 370 around the 2min mark):
Fair enough and point absolutely taken. If money was no object and I had to keep it in the Nissan Z family, I would buy-and-gut a 370Z tomorrow.
honestly it's all about driver... but even though i have a 350z, i would want 370z to win. come on now guys hr is not the greatest car in the world.... hr owners are like turning into evo drivers attitudes... that cant be good...
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Joined: Feb 2010
Posts: 71
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From: TX
There isnt an overheating issue, there was an oil temperature problem with cars that were being ran run after run, an oil cooler solves the issue. The pistons were fit more snugly in the VHR than the HR/DE engines, which in turn creates alot of heat and causes the oil to get hot rather quickly during a few hot laps. I'd say the main issue for guys tracking the 370 has been fuel starvation, car just cuts out when taking sharp right turns. A swirl pot is a quick fix for this, so if you plan on seriously tracking the car, oil cooler/swirl pot, must have.
There isnt an overheating issue, there was an oil temperature problem with cars that were being ran run after run, an oil cooler solves the issue. The pistons were fit more snugly in the VHR than the HR/DE engines, which in turn creates alot of heat and causes the oil to get hot rather quickly during a few hot laps. I'd say the main issue for guys tracking the 370 has been fuel starvation, car just cuts out when taking sharp right turns. A swirl pot is a quick fix for this, so if you plan on seriously tracking the car, oil cooler/swirl pot, must have.
We were on street tires, though the sport brakes were upgraded for Stoptechs all around, so I don't know if it's a matter of "some" tracking versus "serious" tracking, but the problems with the car are becoming more pronounced as more seat time is put in. The car in the vid has a real limited slip now and 4.08 gears, and it rips. With some track tires, it's going to be a beast.
Man this site keeps sending me to facebook/myspace for some reason. Ugg.
Anyways, I know the 370z had issues with overheating as Steve Millen drove the Silver NISMO 370z at ZCON and it overheated after just a few laps so he had to come in early. It had a oil cooler on it.
My HR 350Z also had issues with the fuel. When it got around 1/4 left or a hair more than that, it would start to lose power / stutter when pushed hard. Once it had a full tank, it was fine.
Anyways, I know the 370z had issues with overheating as Steve Millen drove the Silver NISMO 370z at ZCON and it overheated after just a few laps so he had to come in early. It had a oil cooler on it.
My HR 350Z also had issues with the fuel. When it got around 1/4 left or a hair more than that, it would start to lose power / stutter when pushed hard. Once it had a full tank, it was fine.
Oil temp - yes. We still run over 240 with an oil cooler. Without the oil cooler, the hot oil temp puts the car in limp mode in just a few track miles (http://www.zcarblog.com/category/zcg-370z/page/2). As Red370 said, fuel starvation is an issue when it gets too low. We have been experiencing another problem as well, see my response below.
The link from a cool track day shown above determined that the oil temps rose too high within just a few miles. At the end of the day - like you said - an oil cooler is required. The stock limited slip has also crapped out already after just a few track days, so put that on the list as well. Lastly, I and the owner both lost the syncho rev-match after a few laps, which can be quite surprising when you expect it work and it doesn't. I almost spun out a car that isn't even mine! Good times regardless.
We were on street tires, though the sport brakes were upgraded for Stoptechs all around, so I don't know if it's a matter of "some" tracking versus "serious" tracking, but the problems with the car are becoming more pronounced as more seat time is put in. The car in the vid has a real limited slip now and 4.08 gears, and it rips. With some track tires, it's going to be a beast.
The link from a cool track day shown above determined that the oil temps rose too high within just a few miles. At the end of the day - like you said - an oil cooler is required. The stock limited slip has also crapped out already after just a few track days, so put that on the list as well. Lastly, I and the owner both lost the syncho rev-match after a few laps, which can be quite surprising when you expect it work and it doesn't. I almost spun out a car that isn't even mine! Good times regardless.
We were on street tires, though the sport brakes were upgraded for Stoptechs all around, so I don't know if it's a matter of "some" tracking versus "serious" tracking, but the problems with the car are becoming more pronounced as more seat time is put in. The car in the vid has a real limited slip now and 4.08 gears, and it rips. With some track tires, it's going to be a beast.
wow...306bhp versus close to 350bhp..correct me if my numbers are wrong since the 370 has HFCs. Is this video suppost to be suprising.
edit: what are the 350z bolt ons and has it been tuned?
edit: what are the 350z bolt ons and has it been tuned?
Last edited by zerafian; Mar 16, 2010 at 07:22 PM.
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Joined: Mar 2010
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From: Strong Island
Stillen, GTM, and Nismo all make oil coolers for the 370z. Granted it's a PIA, I'd prefer not to have to go through the hassle on a new car but it's not a wallet breaker, it costs a fraction of the price of a good CBE. Guys who have run with an oil cooler from either GTM or Stillen are reporting no problems, not even in the winter once they got a sandwhich plate thermostat. Granted the z33 didn't need an oil cooler, but the z34 doesn't no biggie, once you have an oil cooler you can run all day without heating issues.
Stillen, GTM, and Nismo all make oil coolers for the 370z. Granted it's a PIA, I'd prefer not to have to go through the hassle on a new car but it's not a wallet breaker, it costs a fraction of the price of a good CBE. Guys who have run with an oil cooler from either GTM or Stillen are reporting no problems, not even in the winter once they got a sandwhich plate thermostat. Granted the z33 didn't need an oil cooler, but the z34 doesn't no biggie, once you have an oil cooler you can run all day without heating issues.
