"I'm not going to mod it"
- Thread starter DreXeL
- Start date
Are there many fundamental differences between the K20 and F20 (other than the pair of wheels they drive)?
Yeah, completely different engines. F20 is VTEC, K20 is i-VTEC (includes cam phasing.
The Honda F20C and F22C engine is unrelated to the F-series found in the [mid 90s Honda Accord and Prelude]. It shares many properties with the K-series. This engine, unlike most F-series engines, has two counter-rotating overhead cams, a VTEC system for both the intake and exhaust camshaft, carbon-fiber reinforced cylinder liners (FRM), molybdenum disulfide-coated piston skirts for reduced friction, and uses a more modern chain driven valvetrain as opposed to a belt driven system. It is the only Honda 4-cylinder engine that is designed to sit longitudinally for rear wheel drive.
The engine displaces 1997 cubic centimeters, lending to the Honda S2000's name (1997 rounded to 2000). This method of naming follows suit with the rest of the Honda S-series.
The F20C's bore is 87 mm and stroke is 84 mm.
The Honda K series engine is a four-cylinder otto cycle engine. It is available in 2.0 L and 2.4 L naturally-aspirated variants, and a 2.3 L turbocharged model.
The K series engines are equipped with DOHC valvetrains and use roller rockers to reduce friction. The engines use a coil on plug, distributorless ignition system with a coil for each spark plug. This system eliminates the need for spark plug wires as well as the problems associated with them. It also allows the ECU to precisely control the ignition timing based on various sensor inputs. The cylinders have cast iron sleeves similar to the B-series engines, as opposed to the FRM cylinders found in the H-series.
Two versions of Honda's i-VTEC system can be found on K series engines, variable timing control (VTC) can be found on the intake cam of both versions. The VTEC system on engines like the K20A3 only operate on the intake cam, at low RPM only one intake valve is fully opened, the other opening just slightly to create a swirl effect in the combustion chamber for improved fuel atomization. At high rpm both intake valves open fully to improve engine breathing. In engines such as the K20A2 found in the Acura RSX Type-S the VTEC system operates on both the intake and exhaust valves, allowing both to benefit from multiple cam profiles.
Bore is 86 mm & Stroke is 86 mm for all of the K20 engines.
This is the highest CR of any honda engine:
Found in:
2007- Honda Civic Type-R (FD2)
Displacement: 1998 cc
Compression: 11.7:1
Power: 222 bhp (225 PS, 165 kW) @ 8000 rpm
Torque: 159 ft·lbf (215 N·m) @ 6100 rpm
Redline: 8400 rpm
TBH I was looking at some in the trader yesterday........
Don't think I'd get a particularly good example for the money I would have though.
I can't do that, I'm not that sensible
Save up for one
The S2000 is supposed to be the ultimate N/A car, pretty impressive power from a 2.0 N/A.
Not a chance, iv driven my brothers on numerous occasions, dont see what all the fuss is about. Dont feel like its pushing the power they are quoted.
You could have just linked him to Wikipedia instead of cut'n'pasting it!
Doesn't the F20C also "spin the other way" (crankshaft wise) compared to most other longitudinally mounted FR layout engines?
That's probably because the power delivery is so smooth.
There's no sudden changes in the power when a turbo comes on song, and they're mapped so that the VTEC doesn't "kick" like the older, earlier VTEC systems did - you just get a smooth, progressive power delivery.
Also, you have to realise that the little thing between the two seats with the numbers written on it has to be used more regularly to keep it on-song
You could have just linked him to Wikipedia instead of cut'n'pasting it!
Doesn't the F20C also "spin the other way" (crankshaft wise) compared to most other longitudinally mounted FR layout engines?
I know the B16 does..A mate of mine really wanted to put one in his caterfield until I told him that...
*n
It's a car you get or you don't. You obviously didn't
They really have to be ragged to make progress, on a twisty country road though they are awesome. Crap on motorways though, this is why WillGill hated his. He did about 40,000 miles in 9 months in one!
You could have just linked him to Wikipedia instead of cut'n'pasting it!
Lol, sorry I thought I would save people clicking
An F20c can be mounted to a k20 gearbox to make it FWD if you turn the diff bearing the other way, however the bearing brakes too easily this way for it to be any use. At least, thats what i was told.
Spins the other way to the K20, that I know.
One of the few things I do know about them is that both the K20A and F20C engine spin clockwise (i.e. the conventional direction).