Is a K-series a superior engine to a 4G63? Stock short block vs stock short block? Built 4G63 vs built K?

This should be interesting. I think you need a little more context on what you mean by superior though. Like superior for? $/HP , HP/Liter , reliability doing X, ease of build, weight, trophies won, swaps, parts availability, 1/4 mile records, this specific thing you're trying to do, etc.

I've never owned a Honda and I know very little about the K-series in general so looking forward to what people have to say.

the k series is no doubt a legendary engine, but then so is the 4g63. Like biggie states, both will have advantages/disadvantages depending on what your application. I cant say much on the honda front since ive never owned any honda, but know afew people who do and even worked on some/tore apart a b series. The 4g63 seems like an overall more bulletproof engine tho, The closed deck iron block itself makes it so, it is also designed from factory to handle forced induction. Keep in mind with k series motors most are n/a therefor not pushing the motor to its fullest stress point, those that are have a significantly less reliability/lifespan when compared side by side with the 4g63 but for the cost of building one 4g63 engine, you could have like 3-4 k series motors lol

The K20A is the best production N/A 4-cylinder in the world.
The 4G63T is the best production forced induction 4-cylinder in the world.
Both have billet replacements that are far beyond what the factory intended. You can meet your goals with either one of them these days.

The K20 has incredible cylinder head VE, which makes it very efficient when putting a lot of air through it, but the 4G63 is just an absolute slugger. It's going to make power with brute force - they'll take just about any beating and the solution is always to just force more into it, and it's going to make more power. It's a simple engine that is very easy to modify and it gets great results with basic setups - the powerband is very broad and response is phenomenal. DSMs were in the 7s long before the K-series was even thinking about it. The fastest manual transmission AWD car in the world remains a 4G63 car, even despite the large weight penalty of the DSM chassis. Mike Reichen's 4G63-powered Evo II held the 4 cylinder standing mile record for a while (it still might?).

Ultimately, you build the engine you want according to the chassis you want or have. The Evo is commonly accepted as the best all-around performance chassis in the world; it can do anything, and absolutely dominated the global time attack scene. It will drag race, hillclimb, rally/rallycross, do top speed runs, autocross, circuit duty, and still make a great daily driver. You can't beat the all-around flexibility of the 4G63 or Evo, and that's what makes them great. The K20 may eventually go faster in a 1700 lb tin can, but I'd argue that the K20 is most in its element when N/A, or on mild & responsive turbo setups. The 4G63 is just always on when a turbo is attached.

Time for someone to do an adapter plate to go kseries in an evo

DSM's were in the 7's before the K-series even existed... this metric doesn't really mean anything. and a big factor of that was awd, i'd argue more than the engine. Cause Honda engines (B series) were making as much or more power when DSM's started running 7's but only had fwd to work with.

In general, K series > 4g63. The 4g is good if you want to boost a ton of power, though.

"In the world Group N Production Car category, Mitsubishi's record is unmatched; seven consecutive titles from 1995 to 2001 with the Lancer Evolution."*
So the 4G has covered itself/Mitsubishi in glory, doing what it was made to do. What has the K series done for Honda, aside from internet fame? Mild snark aside, I am actually interested to hear what it has done in motorsport for Honda.


* https://www.mitsubishi-motors.com/en...er%20Evolution.

F20/22C has entered the chat..
There are countless examples of the K taking absurd amounts of abuse and making more power on stock internals (while staying reliable) than anybody here would even be comfortable with in the 4g. The F20/22 even more so. I love the 4g but the K/F is superior for power output and strength in stock configuration.
Real Street's s2000 years back was running mid 9sec on unopened stock F20 (besides cams) for a looong time and Jay beat the **** out of that engine regularly taking it over 10k rpm. If it wasn't for a freeze plug popping out they would have kept racing it with stock engine. If I remember right, I think they were posting in the s2ki forum about the engine teardown inspection and said everything looked perfect inside.

They do different things, so it's not really a fair comparison. However, they both do what they were designed to do and do it well. Are you trying to decide what to build?

Your point? How does this compare to the 4g? There are countless shops that have built cars to beat countless records.

OP asked which is superior in stock form, K or 4g and I made a case for K being stronger and making more power more efficiently. So K = superior. I mentioned the F because RS2000 said K was the best in the world, but F > K. Two different points.

RS200 said the k is the best production N/A in the world, which I and most people can agree with but you throw turbocharged into the argument there are way too many factors to declare any one superior. Refer to biggies first post. We are not discussing the f-20/22 even though those were also n/a factory motors.

I'd argue real street went through alot more work to fit in that turbocharger to make their s2k capable of those numbers, alot more then what you'd have to do with any evo.

Honda engines respond VERY well to boost. It doesn't take a while lot to make power. And, with their C/Rs, the response is incredible.
I do miss my turbo Hondas.....

the K made Honda a few sh*t tons of money…