[Hujkmlopes]

Not exactly comparable to road cars..., but a 2.4L V8 normally aspirated (and rev limited!) Formula 1 engine is well over 300bhp per litre...

Plus they had like nearly 1000bhp per litre with the 1.5L Turbo era engines...[shocked]

[ZZipZZipe]

Not exactly comparable to road cars..., but a 2.4L V8 normally aspirated (and rev limited!) Formula 1 engine is well over 300bhp per litre...

Plus they had like nearly 1000bhp per litre with the 1.5L Turbo era engines...[shocked]

Max of 1500bhp from a 1.5l petrol turbo engine.....jeeeesus

[joeyCanada]

Max of 1500bhp from a 1.5l petrol turbo engine.....jeeeesus

And that was with primitive technology - very low compression, very big turbo's, mechanical wastegates, etc!

Here's a bit on a Ford engine http://www.motoiq.com/magazine_artic...-6-engine.aspx

As has been said, the BMW fours were reputed* to be well over 1500hp in qualifying trim!
Have a look - http://www.google.com/search?ie=UTF-...1+turbo+engine

http://videos.howstuffworks.com/disc...ower-video.htm

*'Officially' it seems to be a mere 1350 or so horsepower[shocked]

[worldofwarcraft]

id like to see em bring max hp to a super small motor like a 50 cc that gets 50 hp guess thats isnt possible though

[Hujkmlopes]

id like to see em bring max hp to a super small motor like a 50 cc that gets 50 hp guess thats isnt possible though

Can't see any reason why not, imagine a 50cc four stroke V4 turbo running at like 30,000+ rpm w/4 bar PSI...

[worldofwarcraft]

lol this is what i want it in kinda lame car but i like how small it is
http://en.wikipedia.org/wiki/Peel_P50

[HRS1H7gO]

lol this is what i want it in kinda lame car but i like how small it is
http://en.wikipedia.org/wiki/Peel_P50

It can be done, but not cost effectively. The reason F1's used 1.5L engines was because the rule books said they had to use them.

In any racing series as long as there is a displacement limit, you'll see some insane numbers out of spec displacement engines.

When the cars got too fast, they changed the rules to slow them down. They do the same thing in NASCAR, Indy and the Cart series cars.

[joeyCanada]

It can be done, but not cost effectively. The reason F1's used 1.5L engines was because the rule books said they had to use them.

In any racing series as long as there is a displacement limit, you'll see some insane numbers out of spec displacement engines.

When the cars got too fast, they changed the rules to slow them down. They do the same thing in NASCAR, Indy and the Cart series cars.

Not quite - the rule was 3 litre normally aspirated OR 1.5 litre for forced induction. When the rules were written, they just had in mind supercharging, as turbo's hadn't been used and, at that stage, were inefficient with lots of lag.
Then some bright spark realised they could built a turbo 1.5 litre with more power and the rest was history! Some NA engines were still competitive for a while as they were much more driveable but not for long.

Around that time they also introduced a limit on the amount of fuel that could be used in a race - which led to cars running out on the last laps and, At Monaco in the early 80's, the race leader spun out at the hairpin on the last lap, was passed by 5 or 6 cars, and still won because the other cars crashed or ran dry. It was really funny as the driver was trying to get to park perme after the race and the marshals were trying to get him to the winners position - he didn't realise he'd placed, let alone won.

Apparently the 'seasoned' BMW blocks that had been used in road cars was a myth - according to the engineers. They actually did try building an engine from a used block to see what would happen but it failed before they got to full load. May have been something else wrong with it, who knows.
Some Ford blocks were supposed to have been left outside before being machined up, to allow stresses to dissipate - don't know how effective it was - or even if they were just pulling the reporter's leg.

[joeyCanada]

For the car guys -
http://www.racecar-engineering.com/a...-test-rig.html
More here
http://www.racecar-engineering.com/a.../1/videos.html
Check out the 917 clip! [thumbup]

[worldofwarcraft]

hey gordo sorry for the off topic but i figure you will know what stock engine makes the most hp per cubic inch?im guessing some rotary engine?

[joeyCanada]

No idea, off hand, mate - I assume you mean NA?

See what I can find - I know several are around 120hp per litre - still WELL under what the bikes are doing!

Here you go - http://en.wikipedia.org/wiki/List_of...e_superlatives

I don't know how current it is, but recipricating (piston) seems to be the Suzuki R13B with over 180hp from a 1300 for over 140hp per litre.
That's over 2.2hp per cubic inch!

As you surmise, looks like the Wankel has quite a bit more - but that may depend on how you measure the engine capacity - true swept or with a correction factor?

[worldofwarcraft]

its amazing what these motors are getting now