New NSX to have 450HP from a 3.6L V6 !!

[mAdD INDIAN]

Originally posted by: Howard
Arg, mindian pwns me. 🙂

BTW, I forgot to mention high-speed breathing is ALSO assisted by an ideal rod/stroke ratio of 1.75-1.8:1

I finally "pwn" someone! 😀 😀

Where did you get that ratio from? I figured high-rpm breathing was depending on valve size/angle/timing/lift and most importantly, resonance of the airwaves?

 

[Howard]

Originally posted by: mAdD INDIAN

Originally posted by: Howard
Arg, mindian pwns me. 🙂

BTW, I forgot to mention high-speed breathing is ALSO assisted by an ideal rod/stroke ratio of 1.75-1.8:1

I finally "pwn" someone! 😀 😀

Where did you get that ratio from? I figured high-rpm breathing was depending on valve size/angle/timing/lift and most importantly, resonance of the airwaves?

With a longer rod, the piston spends more time at TDC and BDC, therefore the air has a bit more time to rush in. 1.75 is the figure Larry Widmer likes (head tuner of Endyn), whereas F1 cars go up to 2:1 or above, so I just gave a small range.

EDIT: High-rpm breathing has a LOT to do with the volume of the intake manifold, the volume and shape of the intake runners, the volume and shape of the intake ports, the shape of the intake valves, the shape of the piston crown, the shape of the head in the combustion chamber, and the same for the exhaust side. You should go read everything on http://www.theoldone.com/, it's quite enlightening.

 

[RMSistight]

Actually, the new Honda S2200 gets about 250 HP. Now I know 10HP jump is not a big whoop, but consider this: Honda's S2200 is still a LEV (low emission vehicle). Name me another sports car out there in the market that is a LEV. NOW, if Honda didn't care about the LEV crap, their 4 cylinder engine in the S2200 can easily make over 300hp.

 

[Siddhartha]

Yep, 450 hp should shut the critics.

 

[Babbles]

Originally posted by: NFS4
450HP NA from a 3.6 liter V6? I'll believe it when I see it.

Took the words right out of my mouth.

I know some are comparing it to the Porsche 911 GT2 or 3, however are those not twin turbos? Minor differance when you have twin turbos putting out >400 HP and a N/A putting out >400HP.

Did not BMW basically say that they got the max performance out of their 6 cylinder with this past years 5 series, hence dropping a V8 into the new upcoming 5 series. Maybe Honda has a trick up their sleeve (150lb torque engine reving at 15k RPMs), but if BMW can not do it, then I would be very suprised if Honday could.

 

[mAdD INDIAN]

Originally posted by: Babbles

Originally posted by: NFS4
450HP NA from a 3.6 liter V6? I'll believe it when I see it.

Took the words right out of my mouth.

I know some are comparing it to the Porsche 911 GT2 or 3, however are those not twin turbos? Minor differance when you have twin turbos putting out >400 HP and a N/A putting out >400HP.

Did not BMW basically say that they got the max performance out of their 6 cylinder with this past years 5 series, hence dropping a V8 into the new upcoming 5 series. Maybe Honda has a trick up their sleeve (150lb torque engine reving at 15k RPMs), but if BMW can not do it, then I would be very suprised if Honday could.

well it depends on price too. 5-series is a volume car for BMW..they can't have it to expensive (altho i think it is already).

The NSX is a niche car..low volume..and very expensive....Honda can afford to be exotic with it.

Also, its possible to get that much power...its just reliability thats in question.

hell, the 3L Nissan VQ makes 450hp natrually asipirated in race form (its used in a few Formula racing series in Europe).

 

[malbojah]

Originally posted by: lupin

Originally posted by: Howard

Originally posted by: lupin
HP is a function of torque x rpm. Torque is just almost linear to engine displacement. (F1 engines, 3 liter has ~300 lb-ft of torque. not much different than your everyday sportscar torque). Higher HP is acquired through RPM.

Ferrari's 3.6L produces 400 HP with 8750 rpm.
If the NSX, with 2 less cylinders is to have 450 HP *NA*, it'll need to spin close to 10,000 rpm.

Unlikely. Besides, Honda's not the kind of manufacturer that produces cars with killer HPs. (unlike americans and germans)

But who knows.

Do you mean torque scales linearly with increasing displacement? That may be true, but only accounting for everything about the engine and its ancillaries is the same.

The S2000's engine redlines at 9000RPM. Assuming the new V6 can rev that high, the engine needs to make 260lb-ft of torque at 9000RPM to make 450HP.

Then again, it would be easy to get 450HP with a turbo (Honda would probably never go with a crankshaft-driven supercharger).

260 lb-ft @ 9000 is possible (that'd give us 445 HP). The question is, can Honda make a 9000 rpm V6?

Shouldn't be that hard. I have a 12k rpm honda I4 that's 10 years old.
😉

 

[Howard]

Originally posted by: malbojah

Originally posted by: lupin

Originally posted by: Howard

Originally posted by: lupin
HP is a function of torque x rpm. Torque is just almost linear to engine displacement. (F1 engines, 3 liter has ~300 lb-ft of torque. not much different than your everyday sportscar torque). Higher HP is acquired through RPM.

Ferrari's 3.6L produces 400 HP with 8750 rpm.
If the NSX, with 2 less cylinders is to have 450 HP *NA*, it'll need to spin close to 10,000 rpm.

Unlikely. Besides, Honda's not the kind of manufacturer that produces cars with killer HPs. (unlike americans and germans)

But who knows.

Do you mean torque scales linearly with increasing displacement? That may be true, but only accounting for everything about the engine and its ancillaries is the same.

The S2000's engine redlines at 9000RPM. Assuming the new V6 can rev that high, the engine needs to make 260lb-ft of torque at 9000RPM to make 450HP.

Then again, it would be easy to get 450HP with a turbo (Honda would probably never go with a crankshaft-driven supercharger).

260 lb-ft @ 9000 is possible (that'd give us 445 HP). The question is, can Honda make a 9000 rpm V6?

Shouldn't be that hard. I have a 12k rpm honda I4 that's 10 years old.
😉

No wonder your engines keep dying. RPM = Ruin's People's Motors - Larry Widmer.

In any event, it's probably not stock, so what did you do to it?

 

[djplayx714]

id like to see a v8 engine comprised of 2 k22as sandwiched together making on badass 4.0 aluminum engine cranking out 480 hp.

hell i could build one right now.

 

[WinkOsmosis]

Originally posted by: djplayx714
id like to see a v8 engine comprised of 2 k22as sandwiched together making on badass 4.0 aluminum engine cranking out 480 hp.

hell i could build one right now.

If they are sandwiched, it's not a V8 😛.

 

[WinkOsmosis]

Originally posted by: djplayx714
id like to see a v8 engine comprised of 2 k22as sandwiched together making on badass 4.0 aluminum engine cranking out 480 hp.

hell i could build one right now.

If they are sandwiched, it's not a V8 😛.

 

[Howard]

Originally posted by: WinkOsmosis

Originally posted by: djplayx714
id like to see a v8 engine comprised of 2 k22as sandwiched together making on badass 4.0 aluminum engine cranking out 480 hp.

hell i could build one right now.

If they are sandwiched, it's not a V8 😛.

You know what he means. 😛