I would like to find out a practical way to build up a DC5 K20A
engine to a reliable 300-350 HP. i would like to do it NA. what
would anyone recommend? the engine is stock at 220HP at the moment.
Only TODA header and cutback exhast 5Zigen Fireball mounted.

 

not gonna happen. definitely not practically.

 

not gonna happen cheap. PRobably cost you at least 10,000 US dollars.

 

holy **** that would be amazing if you could build a all motor k20a2 all the way up to 350 horsepower

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by MyK20Rips! &raquo;</TD></TR><TR><TD CLASS="quote">holy **** that would be amazing if you could build a all motor k20a2 all the way up to 350 horsepower </TD></TR></TABLE>

 

with a k24a1/k20a2 swap you will make it happen in terms of HP not WHP
I made 309HP and I drive the car with ITB

K20a2 (type-s head ) :
Port & Polish
Crower stage 2: 3/4 Race Cams
Crower Stainless Steel Valves: Exhaust (30.5mm)
Crower Stainless Steel Valves: Intake (35.5mm)
Crower Valve Springs & Titanium Retainers
SSR RACE HEADERS
ITB TWM inductions 50 MM
Peak and hold injectors 660cc
Hondata Gasket

K24a1 (CRV Base )
Machined block
Crower Maxi-Light Rods: K24A1
CP Pistons 12:5 -1

Tranny 6 speed
Exedy Organic Clutch
Exedy Light Weight Racing Flywheel
DC5 Type-R LSD
Neuspeed short shifter


HONDATA K-pro


I hope this helps

 

I have seen and heard of some turbo apps on k20a's and k20a2's doing silly horsepower, but never an NA car putting down that kind of power. Especially not in a reliable way.

You would have to think of it kind of like an F1 engine. Really high CR, very hot cams, 10,000 RPM, blueprinting, balancing and silly good tuning. After all that you are still on the knifes edge are far as reliability. One over rev or a dropped valved or a spun bearing and you will be shooting pistons through the hood.

I hope you can do it though. That would be V8 power from an I4!

 

Either it's been done, or it's been pretty close.

As Honda engineers tend to say, "revs are free", and since you'll only get so much torque out of any engine, you'll have to rev the hell out of it to get high HP numbers. giff74 said it already.

That being said, there's at least one K24A2 out there that's getting very close to 300 whp n/a. He's sunk a LOT of work into it, though.

 

just boost it. will be much cheaper if ur looking for 300+ whp.

 

i dont think thats gonna happen
350 is alot to ask for
you gotta start saving now
expected cost price for 350 n/a = 8-9 not including the cost of the motor go boost- alot cheaper
but mainly most important of all, you MUST have a k-pro

 

its doable to get 250whp ~=300hp to the flywheel

 

exactly what I have right now

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by mt72 &raquo;</TD></TR><TR><TD CLASS="quote">exactly what I have right now </TD></TR></TABLE>

hell yeah ive seen your vids...good ****

whats next in store for us?

 

Repeating alot of other people, it will cost. But it depends if you are talking about strickley Hp out of the wheels or fly wheel? It will still be difficult to attain but easier from the fly wheel because it is naturally higher than at the wheels. If you are talking about to the wheels you are looking at alot of money, tuning and wrench time. And are you considering a stroker kit?

 

maybe cant do it NA, but with turbo it wont be a problem. just make sure u don't boost to high or you could have expensive problems later.