400 whp on N/A VQ possible?

Elmo370z · 04-09-2017, 10:54 AM

You should look into EPS TB's since you're bumping the compression ratio up.

austins z · 10-28-2019, 08:22 AM

Quote:

Originally Posted by Elmo370z

You should look into EPS TB's since you're bumping the compression ratio up.

How is your build going? Also not sure bigger TB's will be useful when the intake manifold is still necked down to around 60-65mm. Valkyrie guys tested bigger throttle bodies on stock manifold and it moved the power on the curve, didn't add any.

Also, with this dead thread revival, a few NA builds are supposed to go on the rollers in the coming weeks shooting for high 300's. My time attack build will be following these footsteps. Cammed, high compression, 8k build, stay tuned! MAKE VQ'S GREAT AGAIN!

Hotrodz · 10-28-2019, 01:05 PM

Quote:

Originally Posted by austins z

How is your build going? Also not sure bigger TB's will be useful when the intake manifold is still necked down to around 60-65mm. Valkyrie guys tested bigger throttle bodies on stock manifold and it moved the power on the curve, didn't add any.

Also, with this dead thread revival, a few NA builds are supposed to go on the rollers in the coming weeks shooting for high 300's. My time attack build will be following these footsteps. Cammed, high compression, 8k build, stay tuned! MAKE VQ'S GREAT AGAIN!

Valkyrie has just gone to buying Jim Wolf built long block motors. They make 400 whp.

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austins z · 10-29-2019, 08:14 AM

Quote:

Originally Posted by Hotrodz

Valkyrie has just gone to buying Jim Wolf built long block motors. They make 400 whp.

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True but that's with doing the HR head swap. It seems easy to get to the 400whp mark with HR heads just expensive currently and not very well documented. One of my other buddies that is basically going down the same route I am just made 370whp/300tq yesterday without a tune to adjust and dial in for the cams/pistions/headers set up. Hes hoping to be close to 400 after the tune. Also be on the look out for MotoIQ. They are doing a cams/pistons/e85/ported heads/header build in a few weeks as well.

Hotrodz · 10-29-2019, 09:05 AM

Quote:

Originally Posted by austins z

True but that's with doing the HR head swap. It seems easy to get to the 400whp mark with HR heads just expensive currently and not very well documented. One of my other buddies that is basically going down the same route I am just made 370whp/300tq yesterday without a tune to adjust and dial in for the cams/pistions/headers set up. Hes hoping to be close to 400 after the tune. Also be on the look out for MotoIQ. They are doing a cams/pistons/e85/ported heads/header build in a few weeks as well.

Right on! Excited to see how this all unfolds. The best of luck to you on this journey.

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austins z · 10-29-2019, 10:05 AM

So just to get this out there, I will be trying to get out in the public more via my Youtube channel @ Austin Hertel. Most of my videos now are just fast lap videos from the weekend. Going to try to do more videos with myself in front of the camera talking about the new 2020 livery and the 2020 build plans for the off season. This should help me grow as a grass roots racer as well as get my build partners/sponsors some more spotlight. They deserve it!

Currently I am at a cross roads. 370z motor build with VVEL heads and try to get to 400whp/300wtq OR 370z w/ HR head swap and motor build to get to 400whp/300wtq. Just to leak some more info, there might be someone working on utilizing the 370z harness and ecu tuned on ecutek to control the HR heads. Previously people have been using 350z harness and ecu to make it work.

Whjaxn17 · 10-29-2019, 10:43 AM

Quote:

Originally Posted by Elmo370z

You should look into EPS TB's since you're bumping the compression ratio up.

Nik Sohoritis and myself both are content with stock TBs and I personally recommend steering wide, WIDE clear of the EPS set. My set was promptly disposed of and Z1 told me they've had several sets come back. They won't reset and had my car acting way funky. I reached out to EPS about the issue and he basically told me Jon must not know how to tune.

Do what you like with your money, but EPS will never see another cent of mine.

austins z · 10-29-2019, 03:23 PM

Quote:

Originally Posted by Whjaxn17

Nik Sohoritis and myself both are content with stock TBs and I personally recommend steering wide, WIDE clear of the EPS set. My set was promptly disposed of and Z1 told me they've had several sets come back. They won't reset and had my car acting way funky. I reached out to EPS about the issue and he basically told me Jon must not know how to tune.

Do what you like with your money, but EPS will never see another cent of mine.

Are you the guy that has the "hp record" that z1 tuned and video'd? I thought you had eps TB's? Did you tune on them? Did you take them back off and re-tune? I personally will not be using bigger throttle bodies on my build.

Whjaxn17 · 10-30-2019, 08:48 AM

Quote:

Originally Posted by austins z

Are you the guy that has the "hp record" that z1 tuned and video'd? I thought you had eps TB's? Did you tune on them? Did you take them back off and re-tune? I personally will not be using bigger throttle bodies on my build.

Yes, that's me. I did have them on there. The car would rev between shifts, it idled retarded high on startup (cold or not), and several times when I left it running to just run in a store for a drink or somthing, I'd come back out and my car would basically be 2 stepping. It would rev and hold, and then quit. Rev, hold, and quit at about 2k rpm for a couple seconds. I switched them out for my factory set that I held onto just in case due to hearing the not so good stories about these. The car has been completely flawless since.

So, long story short, yes, the record was broken with them, but no, they are no longer on the car. I couldn't tell any difference, though.

Somebody else beat my numbers and took over the NA title anyway, but I have no plans on chasing it.

austins z · 10-30-2019, 09:04 AM

Quote:

Originally Posted by Whjaxn17

Yes, that's me. I did have them on there. The car would rev between shifts, it idled retarded high on startup (cold or not), and several times when I left it running to just run in a store for a drink or somthing, I'd come back out and my car would basically be 2 stepping. It would rev and hold, and then quit. Rev, hold, and quit at about 2k rpm for a couple seconds. I switched them out for my factory set that I held onto just in case due to hearing the not so good stories about these. The car has been completely flawless since.

So, long story short, yes, the record was broken with them, but no, they are no longer on the car. I couldn't tell any difference, though.

Somebody else beat my numbers and took over the NA title anyway, but I have no plans on chasing it.

Who publicly has higher numbers than you do NA? I only know of a few race teams so far, but those are all HR head swap guys.

Whjaxn17 · 10-30-2019, 09:37 AM

Quote:

Originally Posted by austins z

Who publicly has higher numbers than you do NA? I only know of a few race teams so far, but those are all HR head swap guys.

Sam is all I know. He's from NC. RZG tuned his car, a 6MT Q. There has been some suspicion around it due to the lack of mods on the car, but I'll send it you on ig

Elmo370z · 10-30-2019, 11:52 AM

Quote:

Originally Posted by Whjaxn17

Yes, that's me. I did have them on there. The car would rev between shifts, it idled retarded high on startup (cold or not), and several times when I left it running to just run in a store for a drink or somthing, I'd come back out and my car would basically be 2 stepping. It would rev and hold, and then quit. Rev, hold, and quit at about 2k rpm for a couple seconds. I switched them out for my factory set that I held onto just in case due to hearing the not so good stories about these. The car has been completely flawless since.

So, long story short, yes, the record was broken with them, but no, they are no longer on the car. I couldn't tell any difference, though.

Somebody else beat my numbers and took over the NA title anyway, but I have no plans on chasing it.

Soho did 391whp with a built motor.

Whjaxn17 · 10-30-2019, 02:01 PM

Quote:

Originally Posted by Elmo370z

Soho did 391whp with a built motor.

*w/ a 92mm stroker crank in it.

austins z · 10-30-2019, 03:16 PM

Ahhh ok, yeah 391whp is awesome! I'd be super happy with those numbers, but I'm trying to get there without going with an aftermarket crank. Custom grind C2 cams (not the off the shelf ones), imsa spec 12.5:1 high compression pistons, vk56 valves, headers, intake porting, and e85 is the plans.

AlWakRa · 10-30-2019, 06:17 PM

Quote:

Originally Posted by austins z

Thanks! Ended up placing 1st in the Gridlife Street class season against much higher hp cars.

For reference, the top guys I ran with this season:
Evo9 @ 360-370whp
Sti @ 370-380whp
Evo10 @ 390-400whp
M3 @ 330-340whp
My Z @ 320-330whp

The class says nothing about engine builds

so guess what the plans are for next season? Haha, this is why I have decided to go down this road. Plus if I ever get tired of GridLife, I can also add some slicks and aero and jump into NASA TT. GridLife street class is in for it next year if everything goes well this off season. They wont know what to do if I have the same power as they do!

Side note: comparing data to guys making only 30-40whp more than I do could gain anywhere from 1-2 seconds down the straightaways, depending on track, that I would have to claw back from shear corner speed. Maybe this extra power will allow me to not try to kill myself through the corners haha.

I can see where you hit a wall and feel the lack of power, you need to get every bit of milliseconds from turns, specially with some tracks where power can save a lot of time, this is something I feel as we have some long straights. I think 360-370whp with good torque can do wonders on our car.

Quote:

Originally Posted by Elmo370z

Soho did 391whp with a built motor.

I think this was on a low compression pistons that has been built for boost.

10-29-2019, 10:05 AM	#6 (permalink)
austins z Base Member Join Date: Dec 2014 Location: indiana Posts: 76 Drives: @austinhertel on IG Rep Power: 75	So just to get this out there, I will be trying to get out in the public more via my Youtube channel @ Austin Hertel. Most of my videos now are just fast lap videos from the weekend. Going to try to do more videos with myself in front of the camera talking about the new 2020 livery and the 2020 build plans for the off season. This should help me grow as a grass roots racer as well as get my build partners/sponsors some more spotlight. They deserve it! Currently I am at a cross roads. 370z motor build with VVEL heads and try to get to 400whp/300wtq OR 370z w/ HR head swap and motor build to get to 400whp/300wtq. Just to leak some more info, there might be someone working on utilizing the 370z harness and ecu tuned on ecutek to control the HR heads. Previously people have been using 350z harness and ecu to make it work. andy_meng1024, Rusty, Hotrodz and 2 others like this.

10-30-2019, 03:16 PM	#14 (permalink)
austins z Base Member Join Date: Dec 2014 Location: indiana Posts: 76 Drives: @austinhertel on IG Rep Power: 75	Ahhh ok, yeah 391whp is awesome! I'd be super happy with those numbers, but I'm trying to get there without going with an aftermarket crank. Custom grind C2 cams (not the off the shelf ones), imsa spec 12.5:1 high compression pistons, vk56 valves, headers, intake porting, and e85 is the plans. Hotrodz, Elmo370z and ZontheRocks like this.

04-09-2017, 10:54 AM	#1 (permalink)
Elmo370z A True Z Fanatic Join Date: Apr 2013 Location: st. petersburg Posts: 5,730 Drives: 09 nissan 370z Sp M6 Rep Power: 295380	You should look into EPS TB's since you're bumping the compression ratio up.