400 whp on N/A VQ possible?

Jordo! · 12-03-2014, 02:51 PM

Quote:

Originally Posted by 1slow370

well my cars ACTUAL drivetrain loss was 16% as measured by the dyno. 286/332 so 430 but it actually made more because the graph cuts off at 8200rpm

Just to put it out there that the grand am cars are around 420wheel with HR heads at 9500rpm

He's referring to you

Yup, you should around 430 bhp on an engine dyno

1slow370 · 12-03-2014, 04:58 PM

I know and now its on ebay so awesome fml i need to sell it and pick up like a mazda 2 or something.

Elmo370z · 12-03-2014, 07:27 PM

Why couldn't you do this 12 months ago!!!

Rusty · 12-03-2014, 07:41 PM

I've seen this so many times. Someone does a build-up. Dump a ton of money into it. Then turn around and sell it. Can never figure out why someone would do this.

1slow370 · 12-03-2014, 07:50 PM

CHange of heart? Change of Financial situation? tired of working 40+hours a week and having nothing but a car to show for it? depreciation is a bitch? there are a lot of reasons, at least i got one of my goals accomplished before i sell and can feel proud of building something unique and let the next guy push the limits on it.

Elmo370z · 12-04-2014, 08:35 AM

Well start selling cocaine have tons of money to spare and have a beast of a 370 lol

Elmo370z · 12-04-2014, 08:37 AM

That itch for tuning your car will never leave you, so you mind as well suck it up and keep the car the way it is for now and just start saving money for other things in your life.

Dcocci · 12-04-2014, 10:34 AM

400whp from a NA 3.7 liter would require like 125hp per liter at the crank (rough estimate). Think about that. That's Ferrari 458/ Porsche gt3 RS 4.0 type of efficiency...aka the biggest non FI hp per liter cars out there from any manufacturer. You'd be looking at alot of work and very high rev's. I'd say at least 9-9500 rpm. The higher revs alone would require alot of work, let alone making the engine breathe the way it should at 9500 rpm. Is it possible? sure, but it'll cost ya.

Masterbeatty · 12-04-2014, 11:43 AM

If our engines with supporting hardware can spin 9k +, what about the drive train? I would worry about the bearings, drive shaft and tranny. Plus the engine accessories.

Dcocci · 12-04-2014, 12:57 PM

All valid concerns. It would take R+D to figure out what can hold up and what can't. Throw that into the budget as well. I'd say for starters balancing the entire rotating assembly with a an extremely light flywheel and clutch attached would be important.

1slow370 · 12-04-2014, 01:36 PM

Quote:

Originally Posted by Dcocci

All valid concerns. It would take R+D to figure out what can hold up and what can't. Throw that into the budget as well. I'd say for starters balancing the entire rotating assembly with a an extremely light flywheel and clutch attached would be important.

Awesome words bro, the accesories are fine unless you are going racing, and then you would want to switch to a lightweight racing alternator anyway, the a/c usually has to die to fit the oil pump, and the ps pump is fine, the drive shaft and rear are fine, the trans is just as crappy as it is now but it doesn't implode or anything, and what you really need to do is get aftermarket rods, a slight bump to the valve spring, balance it, run the 282 duration cams, and have good manifolds intake exhaust. I wish there was a dyna pack near me so i could throw down 400+ just like the other NA builds and call it a day.

If you want to know what that level of NA power feels like just buy my car.

( Click to show/hide )

Spooler · 12-04-2014, 08:31 PM

You will regret selling it, just keep it. Ask me how I know.

1slow370 · 12-04-2014, 08:41 PM

It unfortunately must get sold

sandersd · 12-04-2014, 09:42 PM

What are DE and HR heads?

Jordo! · 12-04-2014, 10:04 PM

Sell it.

You can (and probably will) do another car project in the future.

If its gone from labor of love to a money pit, time to sell.

12-03-2014, 04:58 PM	#62 (permalink)
1slow370 A True Z Fanatic Join Date: Aug 2009 Location: In the D Posts: 3,732 Drives: v8 74 260z ;) Rep Power: 7251	I know and now its on ebay so awesome fml i need to sell it and pick up like a mazda 2 or something. __________________ ANSWER PRICE LIST Answers - - - - - - - - - - - - - - - - $0.75 Answers (requiring thought) - - - - $1.25 Answers (correct) - - - - - - - - - - $12.50

12-03-2014, 07:41 PM	#64 (permalink)
Rusty Ronin Samurai - Assassin Join Date: Dec 2011 Location: Fayettenam,Pennsyltucky Age: 68 Posts: 35,187 Drives: 2011 Nismo GM 6M Rep Power: 2684437	I've seen this so many times. Someone does a build-up. Dump a ton of money into it. Then turn around and sell it. Can never figure out why someone would do this. Megan370z likes this. __________________ 浪人 - 殺し屋 "The Difficult Anytime, The Impossible By Appointment Only" http://www.the370z.com/members-370z-...o-journal.html

12-03-2014, 07:50 PM	#65 (permalink)
1slow370 A True Z Fanatic Join Date: Aug 2009 Location: In the D Posts: 3,732 Drives: v8 74 260z ;) Rep Power: 7251	CHange of heart? Change of Financial situation? tired of working 40+hours a week and having nothing but a car to show for it? depreciation is a bitch? there are a lot of reasons, at least i got one of my goals accomplished before i sell and can feel proud of building something unique and let the next guy push the limits on it. Jordo!, gbrettin, Rusty and 1 others like this. __________________ ANSWER PRICE LIST Answers - - - - - - - - - - - - - - - - $0.75 Answers (requiring thought) - - - - $1.25 Answers (correct) - - - - - - - - - - $12.50

12-04-2014, 11:43 AM	#69 (permalink)
Masterbeatty A True Z Fanatic Join Date: May 2012 Location: Whales Vagina Posts: 4,586 Drives: the speed limit... Rep Power: 122867	If our engines with supporting hardware can spin 9k +, what about the drive train? I would worry about the bearings, drive shaft and tranny. Plus the engine accessories. __________________ 2011 MB 6MT Masterbeatty journal

12-04-2014, 08:41 PM	#73 (permalink)
1slow370 A True Z Fanatic Join Date: Aug 2009 Location: In the D Posts: 3,732 Drives: v8 74 260z ;) Rep Power: 7251	It unfortunately must get sold __________________ ANSWER PRICE LIST Answers - - - - - - - - - - - - - - - - $0.75 Answers (requiring thought) - - - - $1.25 Answers (correct) - - - - - - - - - - $12.50

12-03-2014, 07:27 PM	#63 (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	Why couldn't you do this 12 months ago!!!

12-04-2014, 08:35 AM	#66 (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	Well start selling cocaine have tons of money to spare and have a beast of a 370 lol

12-04-2014, 08:37 AM	#67 (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	That itch for tuning your car will never leave you, so you mind as well suck it up and keep the car the way it is for now and just start saving money for other things in your life.

12-04-2014, 10:34 AM	#68 (permalink)
Dcocci Base Member Join Date: Sep 2014 Location: Santa Barbara, CA Posts: 215 Drives: 2014 370z black 6spd Rep Power: 11	400whp from a NA 3.7 liter would require like 125hp per liter at the crank (rough estimate). Think about that. That's Ferrari 458/ Porsche gt3 RS 4.0 type of efficiency...aka the biggest non FI hp per liter cars out there from any manufacturer. You'd be looking at alot of work and very high rev's. I'd say at least 9-9500 rpm. The higher revs alone would require alot of work, let alone making the engine breathe the way it should at 9500 rpm. Is it possible? sure, but it'll cost ya.

12-04-2014, 12:57 PM	#70 (permalink)
Dcocci Base Member Join Date: Sep 2014 Location: Santa Barbara, CA Posts: 215 Drives: 2014 370z black 6spd Rep Power: 11	All valid concerns. It would take R+D to figure out what can hold up and what can't. Throw that into the budget as well. I'd say for starters balancing the entire rotating assembly with a an extremely light flywheel and clutch attached would be important.

12-04-2014, 08:31 PM	#72 (permalink)
Spooler A True Z Fanatic Join Date: Jun 2014 Location: Ga Posts: 13,800 Drives: 2013 Nismo 370z Rep Power: 2684392	You will regret selling it, just keep it. Ask me how I know.

12-04-2014, 09:42 PM	#74 (permalink)
sandersd Enthusiast Member Join Date: May 2014 Location: Houston, TX, USA Posts: 280 Drives: 2014 370z Nismo Rep Power: 11	Not familiar with these acronyms What are DE and HR heads? __________________ 2014 370Z NISMO -- HKS Hi-Power Exhaust -- Swift Springs -- BC ER Coilovers -- SPL Suspension Components -- Nismo R-Tune Intake -- Seibon BD CF Hood

12-04-2014, 10:04 PM	#75 (permalink)
Jordo! A True Z Fanatic Join Date: May 2010 Location: nirvana Posts: 6,394 Drives: 2023 NATM Rep Power: 418	Sell it. You can (and probably will) do another car project in the future. If its gone from labor of love to a money pit, time to sell. __________________ Enjoy it. Destroy it.