World Record NA VHR Build

Mike@GTM · 11-16-2014, 05:56 PM

Quote:

Originally Posted by synolimit

that looks spot on too!! 3700 lbs car with driver and 540 hp should trap around 120 mph.

id guess OP is around 3400 lbs with driver. at 371 rwhp and with these cars having around 17.5% drive train loss, thats 450hp. trap should be around 118 mph but its not. traps at the moment are showing about 330 rwhp or 400hp.

Well, considering his first trap speed of the day was 107mph with a 14.4, does that mean he magically gained horsepower for his final run? No, of course not.

Physics is much more complex than you make it out to be. If he's not accelerating due to poor traction, then his final velocity is going to be lower than it could be if he had excellent traction. A 2.3 60 ft time is abysmal and clearly a traction/launch issue...certainly not a horsepower issue. Just remember that those 1/4 mile calculators you find on the internet are way oversimplified and don't account for all the little details like gear ratios in each gear, shape of the torque band (remember torque accelerates a car: not horsepower), coefficient of drag, cross sectional area, air viscosity, shift times, number of shifts that must occur, etc.

It would be nice if @1slow370 would put up his time slips so we can see all the metrics. That will give us a better idea of when he finally gets enough traction to actually put the power down.

Also, I have zero investment in this project, other than seeing what this motor is capable of...it never ceases to amaze me. I wish my car had VVEL. lol

ZKraken22 · 11-16-2014, 06:35 PM

Quote:

Originally Posted by G37Sam

The GTR makes 540 hp and traps around 120mph give or take. Going from 105 to 113 mph is a major improvement IMO, and as the OP mentioned, with a few more runs/grip he would've definitely seen an improvement.

I'd love to see a few runs with stickier tires!

No that's not true a 480 hp CBA (2009-2011) GT-R will trap 120 mph.
The DBA (2012-2014) 545 hp GT-R will trap 125.

And those cars come in at 3800 pounds.

phunk · 11-16-2014, 06:42 PM

its much easier to compare trap speeds in cars that are stock and setup appropriately as far as gearing, drivetrain, and suspension to use their power. Or even cars that have had several trips to the drag strip and had their setup refined. I wouldnt think too deeply about timeslip details for a car that has only seen the track once.

Z eliminator · 11-17-2014, 09:25 AM

My best trap was 114.7

Carbon_z · 11-17-2014, 11:46 AM

would have loved to see this stroked out

crazy nice build btw

Jordo! · 11-17-2014, 12:10 PM

Final gear affects trap speed too -- taller tire profile alone can make a difference above and beyond power.

STD does tend to be overly generous relative to SAE, but I'm sure its still in the upper 350's at the worst. I'd like to see SAE numbers too just to compare and contrast.

1slow370 · 11-17-2014, 02:12 PM

A gtr is over 4k with driver and 1/4 tank. Traps are very dependant on the traction z eliminators times prove this, he has higher traps than several fi cars that have +100hp on him.

Sent from my HTCONE using Tapatalk

njobe89 · 11-18-2014, 02:09 PM

this is pretty cool... do you mind sharing how much you're into it so far?

edk370 · 11-18-2014, 02:21 PM

Impressive indeed! I prefer NA over FI...But if Nissan were to build it like that stock, the 370 would be a $50K car to say the least. That's like Porsche's formula for engineering a reliable 12-sec car without V8 or turbo...Must've cost you a pretty penny.

Elmo370z · 11-18-2014, 02:54 PM

Considering his one off parts, I would say at lease 12-15 thousand. Put it this way if he went F.I. he would have a 700 horsepower Z (E-85 tune) of course. Kuddos to 1slow370 for sticking with NA.

Jordo! · 11-19-2014, 01:52 PM

^^^ The biggest expense had to be the dry sump. That's at least 5K in the box...

Elmo370z · 11-20-2014, 08:22 AM

Yes you right. Damn near price of a stillen supercharger kit lol.

1slow370 · 11-24-2014, 06:25 PM

Ok so I made a feeler for sale thread probably won't sell it but If someone is serious enough I may consider it, there are a couple of other projects I might like to take up.

Kingbaby · 11-28-2014, 01:42 AM

Crazy...

Zoren 370 · 11-28-2014, 07:22 AM

Subscribed.

Dang more threads to read. Nice NA build

11-16-2014, 06:42 PM	#123 (permalink)
phunk A True Z Fanatic Join Date: Mar 2009 Location: Chicago Posts: 3,668 Drives: 370 Rep Power: 974723	its much easier to compare trap speeds in cars that are stock and setup appropriately as far as gearing, drivetrain, and suspension to use their power. Or even cars that have had several trips to the drag strip and had their setup refined. I wouldnt think too deeply about timeslip details for a car that has only seen the track once. __________________ Charles @ CJ Motorsports : Website \| Facebook \| Instagram \| YouTube Home of the 9 second, stock longblock, stock drivetrain 6MT 370z. 9.91 @ 142mph Last edited by phunk; 11-16-2014 at 06:45 PM.

11-17-2014, 09:25 AM	#124 (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	My best trap was 114.7 gbrettin likes this. __________________ 12.343 @114.14 . 4.5 stroker motor is now being built. Dec 1 2015.

11-17-2014, 11:46 AM	#125 (permalink)
Carbon_z A True Z Fanatic Join Date: Sep 2009 Location: Atlanta, GA Posts: 1,694 Drives: Carbon Fiber 370z Rep Power: 19	would have loved to see this stroked out crazy nice build btw __________________ Full Carbon Fiber Nissan 370z "400zTT" Fully Built 4.0L Twin Turbo 1300hp, 1100whp. Follow me on Instagram at http://www.instagram.com/carbonz.

11-17-2014, 12:10 PM	#126 (permalink)
Jordo! A True Z Fanatic Join Date: May 2010 Location: nirvana Posts: 6,394 Drives: 2023 NATM Rep Power: 418	Final gear affects trap speed too -- taller tire profile alone can make a difference above and beyond power. STD does tend to be overly generous relative to SAE, but I'm sure its still in the upper 350's at the worst. I'd like to see SAE numbers too just to compare and contrast. __________________ Enjoy it. Destroy it.

11-17-2014, 02:12 PM	#127 (permalink)
1slow370 A True Z Fanatic Join Date: Aug 2009 Location: In the D Posts: 3,732 Drives: v8 74 260z ;) Rep Power: 7251	A gtr is over 4k with driver and 1/4 tank. Traps are very dependant on the traction z eliminators times prove this, he has higher traps than several fi cars that have +100hp on him. Sent from my HTCONE using Tapatalk gbrettin likes this. __________________ ANSWER PRICE LIST Answers - - - - - - - - - - - - - - - - $0.75 Answers (requiring thought) - - - - $1.25 Answers (correct) - - - - - - - - - - $12.50

11-18-2014, 02:09 PM	#128 (permalink)
njobe89 A True Z Fanatic Join Date: May 2014 Location: Atlanta, GA Posts: 5,227 Drives: 2013 370z BS 6MT Rep Power: 174284	this is pretty cool... do you mind sharing how much you're into it so far? __________________ 2 plus 2 times 2 = ? ... hint, it's not 8 Stillen CBE, Stillen Gen 3, TP's, Uprev tuned - 324whp/264tq

11-18-2014, 02:21 PM	#129 (permalink)
edk370 Enthusiast Member Join Date: Nov 2012 Location: So Cal Posts: 296 Drives: 09 370Z Rep Power: 13	Impressive indeed! I prefer NA over FI...But if Nissan were to build it like that stock, the 370 would be a $50K car to say the least. That's like Porsche's formula for engineering a reliable 12-sec car without V8 or turbo...Must've cost you a pretty penny.

11-18-2014, 02:54 PM	#130 (permalink)
Elmo370z A True Z Fanatic Join Date: Apr 2013 Location: st. petersburg Posts: 5,709 Drives: 09 nissan 370z Sp M6 Rep Power: 295378	Considering his one off parts, I would say at lease 12-15 thousand. Put it this way if he went F.I. he would have a 700 horsepower Z (E-85 tune) of course. Kuddos to 1slow370 for sticking with NA.

11-19-2014, 01:52 PM	#131 (permalink)
Jordo! A True Z Fanatic Join Date: May 2010 Location: nirvana Posts: 6,394 Drives: 2023 NATM Rep Power: 418	^^^ The biggest expense had to be the dry sump. That's at least 5K in the box... __________________ Enjoy it. Destroy it.

11-20-2014, 08:22 AM	#132 (permalink)
Elmo370z A True Z Fanatic Join Date: Apr 2013 Location: st. petersburg Posts: 5,709 Drives: 09 nissan 370z Sp M6 Rep Power: 295378	Yes you right. Damn near price of a stillen supercharger kit lol.

11-24-2014, 06:25 PM	#133 (permalink)
1slow370 A True Z Fanatic Join Date: Aug 2009 Location: In the D Posts: 3,732 Drives: v8 74 260z ;) Rep Power: 7251	Ok so I made a feeler for sale thread probably won't sell it but If someone is serious enough I may consider it, there are a couple of other projects I might like to take up. __________________ ANSWER PRICE LIST Answers - - - - - - - - - - - - - - - - $0.75 Answers (requiring thought) - - - - $1.25 Answers (correct) - - - - - - - - - - $12.50

11-28-2014, 07:22 AM	#135 (permalink)
Zoren 370 A True Z Fanatic Join Date: Mar 2012 Location: FL Posts: 11,018 Drives: 11 Nissan 370 M6 Rep Power: 1913653	Subscribed. Dang more threads to read. Nice NA build

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