They say it cannot be done - 1000bhp Supercharged VXR8
Discussion
Max_Torque said:
Factory s/c LS9s run 11psi, and make a genuine ~620bhp
1000bhp is roughly 60% greater output...........
Through a stock (restrictive) intake and exhaust system and stock heads. Also this could be running more comp. ratio and a better matched cam. Not to mention the stock tune! Bolt on mods and a retune can make significant power gains well they have in the ZR1s anyway. 1000bhp is roughly 60% greater output...........
I'm not saying 930bhp is correct but how much do the experts on here think it would be making?....
Max_Torque said:
Factory s/c LS9s run 11psi, and make a genuine ~620bhp
1000bhp is roughly 60% greater output...........
And with a better cam you get more power with less boost http://www.hotrod.com/how-to/engine/1409-lsx-blowe...1000bhp is roughly 60% greater output...........
Max_Torque said:
Factory s/c LS9s run 11psi, and make a genuine ~620bhp
1000bhp is roughly 60% greater output...........
Doesn't quite work like that though. My LSA-based engine is identical in architecture to the LS9, even same supercharger technology/capacity but with 13psi makes a verified 824hp which I put mostly down to the cam and exhaust. 1000bhp is roughly 60% greater output...........
wormus said:
Max_Torque said:
Factory s/c LS9s run 11psi, and make a genuine ~620bhp
1000bhp is roughly 60% greater output...........
Doesn't quite work like that though. My LSA-based engine is identical in architecture to the LS9, even same supercharger technology/capacity but with 13psi makes a verified 824hp which I put mostly down to the cam and exhaust. 1000bhp is roughly 60% greater output...........
chuntington101 said:
Max_Torque said:
Factory s/c LS9s run 11psi, and make a genuine ~620bhp
1000bhp is roughly 60% greater output...........
Through a stock (restrictive) intake and exhaust system and stock heads. Also this could be running more comp. ratio and a better matched cam. Not to mention the stock tune! Bolt on mods and a retune can make significant power gains well they have in the ZR1s anyway. 1000bhp is roughly 60% greater output...........
I'm not saying 930bhp is correct but how much do the experts on here think it would be making?....
AER said:
wormus said:
... but with 13psi makes a verified 824hp which I put mostly down to the cam and exhaust.
verified how and at what engine speed...?Edited by anonymous-user on Wednesday 25th May 16:36
Max_Torque said:
Care to link to the Homologation certification to show this "verified" 824 bhp?????
If you haven't got this (industry std and fully traceable) certification then you are using the word "verified" erroneously!
Why would I need a homologation certificate to use the word "verified" ? Most of the numbers quoted by the automotive industry aren't totally accurate and the engineering tolerances of mass produced engines means there is some variation so why be such an "expert" about it? My engine's output was measured in a dyno room, not in the car so to me that's accurate enough.If you haven't got this (industry std and fully traceable) certification then you are using the word "verified" erroneously!
AER said:
chuntington101 said:
AER said:
chuntington101 said:
Stick some boost on top of it and why would it not make the number SEM state?
...because 12psi isn't even double the intake pressure and boosting with a supercharger takes a shïtload of crankshaft power. There's only two reasons for starters... 70% VE on an NA application is bloody good going. 108% VE NA is hocus pocus.
Inertial supercharging, IMHO, blurs the line between NA and FI and doesn't represent a true NA engine as the intake charge is still being forced, albeit without a secondary pump to facilitate this.
Edit: not that you need telling this given your provenance!
Edited by Alias218 on Wednesday 25th May 20:04
Edited by Alias218 on Wednesday 25th May 20:17
DanielSan said:
Other than a lot of b
hing has their been any progress with the actual car yet? I last saw the thread on page 9 and upto that point it doesn't seem worth slimming another 7-8 pages without asking the question.
Some nice parts are on order that should move me closer to the goal hing has their been any progress with the actual car yet? I last saw the thread on page 9 and upto that point it doesn't seem worth slimming another 7-8 pages without asking the question.
Alias218 said:
Gaining >100% VE on an NA application is categorically impossible
Have you revealed this amazing discovery of yours to any engine developers? ;-)(hint, and F1 engine peaks at around 125% manifold VE, and decent NA road car (think bmw S54 or honda F20C) hits around 110% VE!)
wormus said:
Max_Torque said:
Care to link to the Homologation certification to show this "verified" 824 bhp?????
If you haven't got this (industry std and fully traceable) certification then you are using the word "verified" erroneously!
Why would I need a homologation certificate to use the word "verified" ? Most of the numbers quoted by the automotive industry aren't totally accurate and the engineering tolerances of mass produced engines means there is some variation so why be such an "expert" about it? My engine's output was measured in a dyno room, not in the car so to me that's accurate enough.If you haven't got this (industry std and fully traceable) certification then you are using the word "verified" erroneously!
1) £10M facility, which is inspected and certified by an independent 3rd party, and where every bit of equipment and every process is fully standardised and traceable
or
2) A man in a shed with a dyno. (who incidentally, makes his living by creating "powerful" engines. Now i'm not saying you engine builder is fiddling the numbers, but you can VERIFY that he isn't..........
I've been designing, developing, and calibrating engines for 25 years, and AER for even longer than that (sorry ;-) and our "bulls*it" radar is finely tuned. Physics can't be beaten, and as an actual expert (you know, one who earns their living from the trade in question) the balance of probability is that a 6l s/c engine at 12psi and <7000rpm can't make a genuine 1000bhp.
Alias218 said:
Gaining >100% VE on an NA application is categorically impossible. VE is the volume of air you can get into a given swept volume using atmospheric pressure as the reference - at atmospheric pressure (as you would find in an NA application) the volume of air you can squeeze into a given swept volume can at most be equal to that swept volume i.e. 100% VE. Greater than 100% is only possible on FI application because the turbo/supercharger is stuffing more air into the swept volume than the swept volume itself (greater air charge density).
70% VE on an NA application is bloody good going. 108% VE NA is hocus pocus.
Inertial supercharging, IMHO, blurs the line between NA and FI and doesn't represent a true NA engine as the intake charge is still being forced, albeit without a secondary pump to facilitate this.
Edit: not that you need telling this given your provenance!
Over 100% VE is a regular occurrence even on modern N/A roadgoing engines with good intake and head design.70% VE on an NA application is bloody good going. 108% VE NA is hocus pocus.
Inertial supercharging, IMHO, blurs the line between NA and FI and doesn't represent a true NA engine as the intake charge is still being forced, albeit without a secondary pump to facilitate this.
Edit: not that you need telling this given your provenance!
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