I agree with you about the WRC, I also like the off road truck racing and World of Outlaws and the Swamp Buggy Racing in Naples Florida

 

I'm with Lake runner on this question. You almost have to be certifiable to drive WRC. My father ran on the Canadian amatuer curcuit until he put his car into a wall at over 150mph. He walked away but has not driven in a race in almost 40 years.

 

I voted Drag Racing, but you also have AMA Superbike and AMA Supercross....and I will also watch Nascar....but you get a different feel at each different kind....But nothing compares to the feeling you get when a top fuel drag blows by and your whole body and the ground shakes!!

 

thanks, i appreciate what you were able to tell me.
could you or anyone hazard a guess ?

what about well over 15 to 1 ?

 

Did a little net searching...couldn't find squat! Specs are probably around from the 3.0L V10 era of a few years ago, but nothing for these 2.4L V8s.

 

Here's a bit of it. These engines are so unlike anything we are accustomed to, they may as well be from another planet.

For one thing, the bore/stroke ratios are amazingly oversquare (bore larger than stroke). This is neccesary to keep them from becoming shrapnel due to piston speeds and crankshaft loading at 19,000 RPM. As we can see below, the maximum bore (and you KNOW they are all this size!) is 98 MM. For comparison, the Ecotec 2.4 4-cylinder is 88 mm. But wait...same 2.4L displacement but twice as many cylinders, yet the bores are BIGGER...what's up with that?

If we do the math, we can see that to achieve 2.4 liters with 8) 98 mm bores, we end up with a stroke of 39.7 mm. To compare...Ecotec 2.4 has 98 mm stroke! That means the piston moves a mere 1 9/16" from top to bottom on that 2.4L F1 V8. Weird!

A side effect of this huge bore is the ability to also run...huge valves. It takes a lot of breath to get 900 HP from 2.4 liters without forced induction.

Engines like this operate in a fashion you and I can barely imagine. They have NO torque to speak of, and that's why you see them sidestepping the clutch and spinning the tires to leave the pit or start line...anything less and they'll stall.

As the dynamics of these engines are so different compared to our experience, you may be suprised to learn that the compression ratio is a mere 14.5:1 in many cases. Things are happening so fast at 19,000 RPM that many of the factors we are used to are essentially irrelevant.

As a case in point...back in the storied Turbo era of F1, even though the 1.5L engines were running upwards of 1.7 bar boost (23 PSI), they'd actually use 87 octane gasoline, and preheat it for better atomization...anything higher octane just burned too slow!


Regulations
The current regulations on Formula One engines look like this. These specifications have become more strict during recent years in an attempt to limit costs and decrease performance. You can find an evolution of the most important regulations per era in the safety section. As this is only an exerpt of the most important regulations on engines, you would need to see the official FIA technical regulations before you start to design a Formula One engine yourself.

Specification
Only 4-stroke engines with reciprocating pistons are permitted.
Engine capacity must not exceed 2400 cc.
Supercharging is forbidden.
All engines must have 8 cylinders arranged in a 90º “V” configuration and the normal section of each cylinder must be circular.
Engines must have two inlet and two exhaust valves per cylinder.
Only reciprocating poppet valves are permitted.
The sealing interface between the moving valve component and the stationary engine component must be circular.

Dimensions, weight and centre of gravity
Cylinder bore diameter may not exceed 98mm.
Cylinder spacing must be fixed at 106.5mm (+/- 0.2mm).
The crankshaft centreline must not be less than 58mm above the reference plane.
The overall weight of the engine must be a minimum of 95kg.
The centre of gravity of the engine may not lie less than 165mm above the reference plane.
The longitudinal and lateral position of the centre of gravity of the engine must fall within a region that is the geometric centre of the engine, +/- 50mm. The geometric centre of the engine in a lateral sense will be considered to lie on the centre of the crankshaft and at the mid point between the centres of the forward and rear most cylinder bores longitudinally.
Variable geometry systems are not permitted

Materials
Magnesium based alloys, Metal Matrix Composites (MMC’s) and Intermetallic materials may not be used anywhere in an engine
Coatings are free provided and must not exceed 0.8mm.
Pistons must be manufactured from an aluminium alloy which is either Al-Si ; Al-Cu ; Al-Mg or Al-Zn based.
Piston pins, crankshafts and camshafts must be manufactured from an iron based alloy and must be machined from a single piece of material.
A supplementary device temporarily connected to the car may be used to start the engine both on the grid and in the pits.

 

I have to agree. If anyone hasn't experienced a top fuel dragster making a pass in person, it's truly a site to behold. I swear my teeth are vibrating. We try to attend the Nationals at Heartland Park in Topeka, KS as much as we can. Another thing to witness is the jet dragsters that run after the finals on Sunday. All I can say is WOW!

 

Oh, and another thing, from a drag racing perspective that more of us can understand..

...if the typical F1 engine produces 850 HP (we can only guess), then that's enough to propel a 1334 lb F1 car/driver to 7.2 second, 190+ MPH in the 1/4 mile.

Now, of course, they cannot get the traction and 60 foot time required to pop that kind of ET. But just think about it..a low 7-second, 190+ 1/4 mile power-to-weight ratio in something that can turn and stop like nothing else on the planet.

ALIEN!

 

As the dynamics of these engines are so different compared to our experience, you may be suprised to learn that the compression ratio is a mere 14.5:1 in many cases. Things are happening so fast at 19,000 RPM that many of the factors we are used to are essentially irrelevant.



THANK YOU SO MUCH !!

 

And these turbo engines were putting out up to 1500HP!