Pushing the limits of 4 cylinders?

[Shad]

1.8 Rover K-Series 4 cylinder engine. Have a guess at the power.




Two hundred and ninety bhp! 290 bhp!! 242 ftlb torque!!! From a 1.8 litre 4 cylinder!!!

Ok so it's been supercharged and race prepped... but still!

http://www.bookatrack.com/-pC?517

Someone lend me 18 large, NOW!!

[Maffu]

Hardly.

Didn't the Mercedes 2.5 16v Evo, which was a 4pot, iirc, have 250+bhp from a N/A engine?

Anyway, if we're allowing for 'charging, then the SR20 and YB engines have the game beat. Plus turbo charging a vtec can get silly results. 4pots aren't even being tested yet!

[Zak33]

Hey lets not mess about....

Production Honda S2000......4 cylinders, 2 litres, normally aspirated.....

any guesses....

it starts with a 2......then a ......4.....then a ......0

240 bhp and its got a 3 year warranty and sensible servicing.

Unreal

[Jiff Lemon]

100 BHP per litre is a good figure to aim for. If you're turbo/supercharging you can start getting silly.....

Look at the group b cars - R5 maxi turbo 2, 1565cc, 430bhp.

Ok, so you have to rebuild the engine after every rally but hey!

[Zak33]

old shape Mk1 BMW M3 was over 200 bhp...back in 88

[hotpurple]

Well, my 1.6 na Honda (non VTEC) has 130bhp, and that is quite tuned up (but as it came from the factory). Most of the newer performance honda engines have around 100bhp/litre, S2000 is 120bhp/litre. If we really want to get silly though, the BMW F1 engine in the 80s was a 1.5l 4 cylinder turbo. Have a guess what power that produced. That's it, you got it, 1500bhp!!! That's 1000bhp per litre! Funnyest thing about it was that it was a standard road block that had already done 100,000 miles to destress the block. Brave!

Chris

[[GSV]Trig]

Any car in my eyes should have at least 100Bhp/litre to be worth its salt, I'm aiming for 200Bhp/tonne tho jsut to be different

No turbo, No blower, No GiggleGas....!

http://www.qednet.demon.co.uk/xe/race.htm

http://www.sbdev.co.uk/Taper%20Kits/.../TP290_Kit.htm

[hotpurple]

Power isn't everything

[[GSV]Trig]

Nope, brakes 32mm bigger than standard help as well, as does tweaked suspension a quick rack, sticky tyres and balls the size of watermelons

[Richie]

Only got 65BHP/litre here :/

Ack, sod it.... forget BHP, feel the torque !!!!

[hotpurple]

Nah, you don't need torque if you're driving it properly (on a track)

[5lab]

ermmm... yes ya do.

i got something like 55-60bhp/litre out of my engine but it is 17yrs old..

[hotpurple]

Well, age is no excuse. Mine is 15yrs old and produces 130bhp. And also my engine has plenty of go as long as you keep it above 4500rpm. Still only has 145nm at 5700rpm.

Chris

[5lab]

bet its alot bigger block than a n/a carb 1.4 thou

[hotpurple]

I wouldn't bet on it, and it'll definitely be lighter.

Honda D16A9 engine. 1.6 short stroke, twin cam. Alloy block and head. Revs to the moon (repeatedly). The engine is actually quite small, apart from the head that is quite wide (due to the rockers and excessive valve angles).

Chris

[Richie]

Originally posted by hotpurple
Nah, you don't need torque if you're driving it properly (on a track)

Er.... Torque is what gives you acceleration so even on a track, its pretty important.... No more or less important than all the components tho (handling, grip etc) but still important...