Talk:Honda F20C engine

VTEC[edit]

The page says vtec is engaged at 6100rpm in the motor spec breakdown. Then it says 6000rpm in the paragraph. Inconsistency

"VTEC engagement" is incorrect terminology.. it would be better written as "VTEC crossover".. VTEC does not go from off to on.. it goes from stage 1 to stage 2.. if vtec was off then it would not change profiles.. gezzuzz 03/23/08

Removed[edit]

Removed the following: The heads are not interchangeable, mainly due to the differences in the drive system for the valvetrain between the two engine types. IJB TA 23:35, 23 May 2006 (UTC)[reply]

Removed the following: "...though unofficial dynamometer tests show a slight increase."

Is this really relevant here? IJB TA 11:44, 24 August 2006 (UTC)[reply]

Celica engine[edit]

2ZZ GE Celica engine is only capable of producing 180HP stock, not 200. Which makes the 2ZZGE 100HP/L. TRD versions of the engine is able to produce up to 210PS. http://trdparts.jp/english/parts_2zz-engine.html

SR16VE N1[edit]

The second place prize goes to this engine, 123hp/L please edit 203.217.13.50 (talk) 06:29, 5 September 2008 (UTC)[reply]

F20C vs SR16VE N1[edit]

Specs

Honda F20C engine: 1,997 cc (2.0 L) with 247 hp (250 PS)
Nissan SR16VE N1 engine: 1,600 cc (1.6 L) with 197 hp (200 PS)

Math

F20C: $.mw-parser-output .frac{white-space:nowrap}.mw-parser-output .frac .num,.mw-parser-output .frac .den{font-size:80%;line-height:0;vertical-align:super}.mw-parser-output .frac .den{vertical-align:sub}.mw-parser-output .sr-only{border:0;clip:rect(0,0,0,0);clip-path:polygon(0px 0px,0px 0px,0px 0px);height:1px;margin:-1px;overflow:hidden;padding:0;position:absolute;width:1px}1997⁄247 = 0.12368$
SR16VE N1: $1600 ⁄ 197 = 0.12312$

Results

F20C: 123.6 hp/L
SR16VE N1: 123.1 hp/L

Conclusion

The Honda F20C engine, at 123.6 hp/L, is .5 hp/L more than the 123.1 hp/L Nissan SR16VE N1 engine. The F20C produces the highest power per L of any production engine.

Thoughts? roguegeek (talk·cont) 00:27, 27 October 2008 (UTC)[reply]

on the other hand 200/1.596>250/1.997

are the cams really counter-rotating? they do not seem so:

http://image.modified.com/f/17359222+w750+st0/0610sccp_15z+honda_s2000+cam_bridge_bolts.jpg

any data on the conrod length, or reciprocating masses? or overall engine mass? the timing chain looks special, is there an advantage vs roller chains?

Claim about HP/L being the biggest is incorrect or at least not specific enough[edit]

There are plenty of motorcycle engines that made more than 123hp/l in 2001, for example the engine in Honda's own CBR600F4 (1999-2000) at 157hp/l. Motorcycle engines are also naturally aspirated and mass produced.

So the claim from the article that

"Honda's F20C engine held the record for producing the highest specific power output for any mass production naturally aspirated piston engine, at 123.5 HP/L, until Ferrari began production of the 458 Italia in 2010, which produced 124.5 HP/L."

is untrue if it doesn't specify that this only applies when looking at car engines, not all mass produced naturally aspirated engines. 2001:9E8:3010:C800:88AF:EC1C:9F1A:3282 (talk) 14:54, 15 November 2023 (UTC)[reply]