Wait, there is more ... valve-capable Wait, there is more ... valve capable of 270 kwfw The V6 has 4 valves per cylinder and there is 6 cylinders... ummm 180 kwfw / 6 cylinders / 4 valves = 180/6/4 = 7.5 kwfw per cylinder per valve And the VH45 has 4 valves per cylinder with 8 cylinders per engine, so that is 7.5 kwfw multiplied by 8 cylinders multiplied by 4 valves = 7.5 x 8 x 4 = 240 kwfw ..... shit that did not work Dam all this maths stuff does not work
Engine weight comparo? Surprised this has not been mentioned, the Z32 VG is a very capable engine but it is regarded as heavy. How does the VH45 compare? I've heard that they are considerably lighter but find this hard to believe. If none were weighed then how do the car ride heights compare?
lighter and a few inches longer edit, had to search as i couldnt remember off the top of my head vh45 weight: 231kg http://forums.nicoclub.com/zerothread/185771 The VH45DE weighs just at 500lbs with all accessories. http://zdriver.com/forums/showthread.php?t=11335 The VG30DETT weighs a little over 600lbs.
40kg saving is quite considerable. and while it makes about as much power as a stock TT it has a much better sound and better throttle response
You say the torque has doubled, yes but how????:bash: 300zx NA, My NA is 272Nm at the wheels (45.3Nm/cyl). 450zx NA, your graph shows (if I'm reading it correctly) about 510Nm (63.75Nm/cyl) 93 x 82.7mm 10.2:1 My old 5L V8 was only 400Nm (50Nm/cyl) 101 x 76.2mm 9:1, Am I right guessing it's all in the compression? Even adding 12% to the 5L it's still only 453Nm, what the? 510Nm this changes my whole perspective completly........(thinking and looking at bank account)
im not trying to deminish your accomplishment, i think what you have done is great. i simply disgaree you are losing 90kw @ the crank through your auto.. maybe 40kw.. 50 max.. but 90? seems extreme. i'll add that auto gen III vy-vz's make around 180 stock.. and they are rated at 245 crank, thats all im basing it off.
I loved the sound of my VG30DETT when it was on the road. I had an exhaust system so quiet you couldn't hear the exhaust. Even idling, you would have your ear right next to the muffler, and wonder if the car is on. However, the engine you could hear. I got pulled over by some cops for having a "loud car" and they were a bit bewildered and let me off with a warning only because they couldn't even tell it was running when I was idling on the side of the road. The engine would scream!!! I used to love to rev it just to hear that VGSymphony~ :biggrin: I think other zedders can't hear that cos their exhaust drowns it out. I want a quiet exhaust again, but not restrictive. V8 sound is lovely, until you start watching youtube videos of V12's. All those countach and diablo video's did it to me, especially the countach's!
I'm sure the use of % only works within a narrow hp range, I mean when you hit 1000hp I can't imagine you'd lose 330hp in the transmission.
Lol, we better no turn it into a VS thread, i think the VG would win. Great engine for what they are though
Great stuff, love reading these VH threads. Have always dreamed of such a conversion after first reading about one, awesome to see them take shape on our very own forum! :zlove:.
wow...nice stuff steven... only thing is that makes me wonder is why do holden engines pull out the same from a 6L while nissan can do it from 4.5L.......like is there any logical reasoning or anything i can read coz im really interested on this....as1.5L difference is like adding an extra corolla engine( ps. i know its not)
The 6 litre chev v8s would be limited. I'm sure if you let it breath free it would produce more power than what we get in our cars.
the holden engine is an old design pushrod V8, sure it's all alloy but thats bout the only new thing about it. The VH has DOHC's, VCT, tuned intake, pretty good stock headers, modern internals and a VERY high flowing head with very well deigned ports. Also the VH revs higher and with a tuned intake will sustain the torque to make the same power
All those are all well and good on paper, however these old school engines are infinitely more flexible and better than our engines and also the VH. The LSx is lighter, smaller, cheaper and easier to make/fix, more powerful, more torque, more reliable, can be modified to run on LPG and E85, and actually has a very good fuel economy. The LSx is for many one of the best engines currently available.
Motor Magazine ... Holden V8 KWFW over the years 1968 ? 5.4l ? 186kwfw 1969 ? 5.7l ? 224kw 1971 ? 5.7l ? 205kw 1974 ? 5.0l ? 179kw 1976 ? 5.0l ? 161kw 1992 ? 5.0l ? 200kw (GTS) 1994 ? 5.7l ? 215kw (GTS) 1997 ? 5.7l ? 220kw (GTS) 2000 ? 5.6l ? 300kw (GTS) 2008 ? 6.0l ? 270kw (SS) 2008 ? 6.1l ? 317kw (GTS) Ford ? 5.4l XR8 Falcon = 290kwfw Holden ? 6.0l SS Commodore = 270kwfw Z32-V6 3l = 180kwfw ?. 180 / 3 = 60 kwfw/l VH45 = 270kwfw ? 60 kwfw/l x 4.5l
but what about the torque I don't understand how the vh45 produces so much torque? Can someone answer this?
Have you seen the heads off the VH? Compared them to the VG? Cam duration and lift? VVT angle? Compression ratio? Stroke vs Bore? You can't just scale it. It doesn't work like that. All these (very simple) theortical calculations are detracting away from the fact you have a working VH in your Z. And another thing you reckon you had 180 kW out of your 17 year old NA VG with a UDP and some premium? Come on...
Steve, You followed your dream...you pulled it off(with great results as far as I can see).:thumbup: All else is "bum fluff". To Hell with the figures(and the doubters), just get out on the road and enjoy! I look forward to seeing "Jennifer" in the flesh.:zlove::zlove:
exactly....who cares if it was 1rwkw more or less than another engine....its totally different to the vg and lsx blah blah...enjoy it for what it is...i assume you made this car to be a gt cruiser or something...enjoy it for what you built it for and stop worrying what others are saying about power
