ive got a friend with a 95 civic 4dr. i know it aint the best platform. were goin to do an engine swap. what would be the better engine. the k20s, h22s or b18s. he wants to turbo it so which one will acept the best full turbo setup.  

K20A2 with a Full Race turbo kit  

do you know where i can find one online at.  

b18 w/b16 head and a custom turbo kit that would coast less than 5k and walk a gayass k20  

All options are good options.I say go with the K20s. They have much more potential to make power.  

tw1nturb03kgt you really must not know anything about Honda motors and the advances made since the B series have no longer been used in factory cars.  Yes the B series have made big power in the past in the world of Honda performance.  However, the K series motors are substantially stronger.   It would cost more to go the K20 route, but in the end the OP would have a much stronger, more reliable set up.  

the b series is the classic honda motor. thats the first tuner i worked on. i know the k series pushes out more power at stock. is the market as large for the k series as it is for the b series.  

Why not turbocharge the little runt? I think with careful planning it could cost about as much as a correctly made engine swap, except you won't get scammed by those shady junkyard dealers  .

The formula goes as follows:


first you find the PCO (or how much boost)


PCO = (how much boost you run) + 14.7 + 1.5 = X


Then from there you find Intake Density:


Di(Intake air density) =  boost pressure+ atmospheric pressure
_______________________________________________________

R (a gas law = 53.3) x 12 x (460 [degrees rankin] + intake temp)


From that we get the mass flow rate:


*Mf = Di x displacement x (RPM/2) x Volumetric efficiency


and then the correct mass flow:


Mf x the square root of the compressor inlet temp. / 545
_____________________________________________________

atmospheric pressure/ Mass flow rate*



Now you get that and put your findings in an efficiency island.



   



I don't know if you already know this, but hey no harm done.  You want to run as close to the highest number or the center of the islands (closest to 70% or higher). That will give you the best boost and calibration to your engine minimizing some lag and providing the best reliable and usable power. Make sure you don't leave the islands in your calculations, because that would just mean your just blowing hot air.   And you'll possibly wreck something...

Just a suggestion, so weigh your options and good luck.

You can find a better example of this formula in this book: Sport Compact Car Engine and Driveline Handbook. Since you see that I can't really comprehend why the MF is used twice in one formula as stated by the *'s. But hey it works!

Sometimes being a geek pays off   (just keep it on the down low)  

Oh I completely forgot! Edelbrock sells a turbo kit for your car for about $3,800 bucks and it comes with a GT28R ball-bearing turbo which should suffice all the volume you need without ramping the Psi to unsafe levels.  

that sound good? ya you lost me. im not a turbo nohow. the guy is all into nos and im tryin to turn him over more engine power. na or fi.  

I was just saying that your friend could just "correctly" (< by that I mean just calibrate) turbocharge his car and leave off some problems that might be encountered with an engine swap, because we all know not all engine swaps are the same no matter how many time's they've been done....

If you do get an engine swap I think the Heads on a K24 engine are better than those in a K20 so a K24 would be better, but I'm not good on Honda topics regarding such things, so I'll shut up now....  

^its actually the opposite.  the heads on K20's have more aggressive valvetrains which is why they rev up so high.  the K24 has larger displacement which obviously = more tq.  a few people have taken K20Z3 heads and matched them up to K24 blocks for the best of both worlds.  

that sounds awesome. that is one of the reasons i love hondas. you can use stock honda parts and make a beast of a frankenstien motor.  

i have experience with hondas if its a sohc turbo it becauses them little *** are fun when on boost just make shure its not your everyday driver