Fatty_FC3S

I understand that it seems improbable, but it goes to show how much influence engine management has. I didnt believe it at first either, but dyno slip i saw doesnt lie. Sorry if i upset you, but im standing by my previous statement of 212 rwhp.

Port work on a 6 port is not very worthwhile. Racing beat invested lots of money in porting work on 6 port motors and came to the conclusion that it really doesnt gain much horsepower at all. 6 port motors have less material to port versus a 4 port motor. Im not saying you couldnt get a few extra horsepower from porting, but the gains are nowhere near what a 4 port motor will gain.

The car is a 1st gen autocross car that has been featured in grassroots motorsports before. The engine has the dead minimum needed to run (no smog, no power steering etc...) and uses a quartermaster clutch (i believe that is correct, i could be wrong on that). Those clutches are tiny, and the whole clutch and flywheel assembly weighs about 14 lbs. Again, im not trying to make outrageous claims, this car has won races so many times its not even funny.

KiyoKix

Why is it that people think things are impossible, just because THEY haven't seen it? Have any of us seen a McLaren F1 go 231 mph before besides a video that can be hacked...no, but it's a common belief that it's been done. Don't doubt what you can't do...just ask how you too can pull it off.

i_piss_on_hondas

Man people are funny... yeah he might have been running 212 hp ON A TURBO!!!... The secret to building high hp motors is boost... the secret to building NA motors is FLOW... I dont care HOW well the ignition is tuned or how well the fuel maps are tuned IF YOUR NOT FLOWING ANY MORE AIR YOUR NOT GOING TO DO ANYTHING... Na motors need more air to make hp... meaning EXTRAMLY LARGE throttle body or big carb/carbs big port and free flowing exuaghst and compression... PERIOD... since no one makes any HIGH compression rotors that x's out compression... decent power can be made with 9.7:1 series 5 rotors dont get me wrong... 212 whp on a stock port na motor IS IMPOSSABLE... I have never seen superman fly... is it impossable YES!!!... and if you want to run your 12a with a fart pipe and a "cold air" intake and say your makeing 190 whp on your stock NA motor go ahead... all the other rice boys will beleave you... BUT ITS IMPOSSABLE

Fatty_FC3S

Thats fine if you believe that its impossible. Maybe im not being clear, there is no internal porting on the motor, that doenst mean that there wasnt intake and exhaust work (manifolds and such). I dont qualify manifolds as an internal part of the motor, however maybe you do.

Yes i know all about turbos and airflow. The replacement racecar for el duro is a 12a turbo car that puts down 268 rwhp at 10 psi. Its quite rediculous really since its so light and even the biggest stickiest tires wont hook up.

Maybe i can get the dyno sheet and upload it for you, unfortunately i havent seen the car for quite awhile to inquire about that.

KiyoKix

Wow honda boy you had an awesome comeback since we all know that superman is real. I mean c'mon the hell on, at least come back with something rational during an argument and not a comic. If you don't want to believe it great...take your happy rotorite *** the hell on then, unless you're Dr.Wankels freaking brother then shutup.

Logo

Ignore hondaboy, he's still a kiddie!

i_piss_on_hondas

Really a kiddy??? umm no... and IF YOU DONT FLOW ANY MORE AIR THOUGH THE ENGINE YOU DONT GET MORE POWER... EXAUGHST HELPS... AIR FILTERS HELP... your NOT going to make 100% hp gains with EXAUGHST and a "cold air intake" and ignore me if you want to because I live in the REAL WORLD... simple rule of thumb

stock ports na= NO HP PERIOD

Rs4Racer

Hey Im gonna make at least 210 horsepower on my n/a 13b yeah 13bt with s5 rotors and streetport... racing beat header weber manifold and carb system and also a distributer instead of the cas. no a/c or power steering... no emmissions... no bullcrap ecu... e-fan and kr2d radiator.... my enginebay is gonna be so clean.. this is kinda what inspired me..
The article and pictures over at www.fc3s.org





Yeah but anyways your not going to make 212hp out of a non ported engine even with a haltec or whatever...

Thats like saying I should expect 300hp from a streetport if I have a haltec... cmon thats not realistic now is it?

But just wondering a motor that has been ported.. should I expect more power/ torque from an aftermarket manifold and fuel system that is less restrictive? What about on a stock ported motor?

REVHED

I'm not saying he didn't really pull 212hp. But, the only thing that proves is something I've known all along... chassis dyno's numbers can be very innaccurate.

Take this into consideration, I have a friend who has an Rx-3 (no weight reduction) with a bridge-ported 13B, 51mm IDA Weber, exhaust etc. It runs a 12sec quarter and has put down 200rwhp on a Dyno Dynamics system which sounds about right. There's no way in the world your stock port, 6-port 13B has anywhere near as much horsepower. Even taking into acount the Dyno Dynamics 15% drivetrain loss verse 10% for the Dynojet it doesn't even come close to adding up.

buzz

staying out of the arguments... you can get ida style weber manifolds for both NA, T and 6 port 13b's. There are also adaptor plates available to swap inlet manifolds between cars, eg a 13bT onto a 12a (easy way to intercool a 12aT !). There are also weber adaptors to bolt an ida onto mazda 4port carb manifolds, and to bolt a dcoe onto an ida lower manifold.

Getting into the argument, while quality flow is an essential component, it isn't anything without the RPM. Remember HP=rpm x torque - so make then engine to rev (light rotors, flywheel, clutch, etc, clearanced rotors, carefully chosen seals), and then make it to keep living at those revs (revised oil pressure, modified galleries and mainshaft, 2 piece shaft) and then bolt on the free flowing inlet and exhaust.
If you are going to be really serious you might as well bridgeport it and then reach to the top-shelf for engine management (motec) and a quad throttlebody inlet. Check the "Guru Motorsports" website for inlet designs that are as good as any and better than most. Note injector placement over the trumpets... and remember what IPOH said about flow.... this is quality airflow!