drago86

Thats very impressive power, I'm 99% positive you have the highest HP 6-port NA engine ever posted,.

BRIDGEP0RTED

white fc they cant even notch the housing?

Maxthe7man

If ported right there is no more chance of side seal falling in on a bridgeport than a street port..
the bridge should be located so that the the track of the tip of the side seal, the rubber corner piece , a bit of the corner seal, and the bottem edge of the apex seal is supported.. Side seals only get eaten when the port is the wrong shape...


Mazda claims 250 hp for the renesis in the formula mazda's.. Never seen dyno proof of that though..
I have seen 342 rwhp on a dynapack in a full bridge 13b n/a miata in Nagoya, with motec ems, beautiful machine, and quite streetable...
I am in the process of trying to recreate the same engine for my FC, except probably with haltech ems, and 9.4 rotors instead of 9.7's..Max

Relisys190

iTrader: (4)

Holy crap! It was 3 AM i don't know why i said side seal lol.... I did mean corner seal (falling through) oops

Regards,

-Markus

casio

Relisys, i would love to see the turbo rotary miata. sounds hot. when i talk bridges, i usually mention half bridges simply because i live so close and am pretty good friends with BDC. i know not everyone completely supports his work, but i believe he has (built and tuned) the highest horsepower street engine on the board (499rwhp). what i'm getting at is he deals with half bridges. from my knowledge, he hasnt done a single full bridge. his opinion, take it as you will, is that he doesn't see the half bridges being much or maybe any less reliable than a big streetport. some he does more radically, but for the sake of the extra 1-16 hp, i would think you could stay rather "mild" and possibly reach the goal.

max, the 250hp is flywheel. i am almost undoubtably sure (which means nothing). i worked with formula mazdas (the new ones with the Renesis are Pro Mazdas last i heard) which claimed 180hp. i dont know how true that is, but 180 i would think would be possible with the carb and 3in exhaust. my only question would be at what rpm. formula mazdas are rpm restricted in competition and must check out after a race. i think the rpm limit is 6800 (but can be 6825 give or take; i dont remember specifically). the renesis is rated at about 238hp, so with a nice efi setup (i think they run motecs, i left that job for scholl before the Pro Car arrived) and a big exhaust, i think they could muster another 12hp. oh, and the transaxle they run on those, i was told, was good for approximately 400hp (or was it torque?). that you might be interested in for your dune buggies, renisys.

DerangedHermit

NOS................

pianoprodigy

Mazsport - Florida (where Relisys works) built both my FC and FD motors.

The FC has a rebuild with a mild streetport, full Racing Beat exhaust (race pipe instead of header), Intake (K&N filter with custom airbox, Porting and polishing on the manifolds, Port Sleeves removed, E-fan and an S-AFC II. It will be going to the dyno soon. I'm hoping for at least 170 rwhp.

casio

what year FC? i'm doing a rebuild shortly on my 91. i'm going to try the s4 intake manifold (hopefully ported 'tapered' sections) and maybe swap the s5 on later for comparison. i'm not sure what kind of streetport i want for the stock ecu with safcII. i would like to go wild, but the stock electrical (ecu, sensors)components have me worried how far i can go. good luck with the 170+. i wouldnt mind being right up there, too.

Turbo23

iTrader: (4)

150hp? My s4 t2 with a full exhaust, safc, and fuel pump is making good hp. Ive raced a FD with a intake and dp and i was pulling slightly. So 150 stock is alittle off, but its possible after a few years of wear

casio

how far off would you say 150rwhp is? and what is "good horsepower"? brand new s4 T2s were rated at 182. average drivetrain loss, i believe, for a rear wheel car is said to be ~15% or so (~18%). so figure about 182-15% (27), you get 155. 18% loss and youre at 149.
150 sounds fair to me. he was referring to stock.

White_FC

Nope. no cutting at all.

pianoprodigy

My FC is a 90 Vert.

powrdby13B

you know, 200 RWHP is easy to achieve with a good bridgeport... I did that to an 88NA and it runs fine... I vote for doing that to the buggy :-D

powrdby13B

OOOH AND AN NA-TURBO CONVERSION TOO LOL OR MAYBE A SUPERCHARGER :-D
you'd be like oh damn, my tires don't seem to be able to stop spinning

gerbraldy

we just got done with my friends 86 carb'd 13b 4port. It has a full bridge port, holley 700, full custom exhaust. We put it on the dyno yesterday and it got 232 at the rear wheels.

DerangedHermit

What kinda gas mileage

gerbraldy

well, we fill the tank drove to sarasota there and back, whch is about 35 miles away. He drove fast and irratic so by the time we got back we sputtered to the gas station.

gerbraldy

let's just say a built 350 gets better gas mileage.

gerbraldy

let's just say a built 350 gets better gas mileage.

wpgrexx

what kind of torque numbers are these higher hp motrs running.


Are you guys running a TII intermediate housing?

RETed

I think you guys should also start mentioning redlines.

The new Renesis motor redlines significantly higher (9kRPM?) than the last 13B NA in the 1991 FC at 8kRPM.

If you can reliably spin the motor higher, you can fudge the horsepower output by running a higher redline.  The stock ECU might not be able to do that, but a stand-alone EMS sure can.

This is also why BP's make bigger horsepower numbers, as they keep making power a lot higher than the stock port (and even street port 13B's) can attain.  BP's regularly see above 9kRPM, and if your BP isn't do so, you're wasting it.


-Ted

rowtareh?

iTrader: (1)

Jesus Padilias(sp?) Peri-Ported FB?

360 what? J/K. A full BP will make well over 200hp to the wheels, with the right ecu, ignition, injectors,and intake and exhaust. But if you want it streetable, don't count on it.

And whoever posted about BP's usually going past 9krpm? Try 10k, and 11k. Just look at judge ito's RX-3 SP with Full Bridge, with slight peri port. With an 11k redline, it is gonna be crazy to see the numbers on that car and the times he will be running.

88IntegraLS

Who gives a damn what HP an NA makes. When I see a streetable one break 13's at the drag strip, then I'll be impressed.

RETed

Such animosity?


-Ted

88IntegraLS

Yeah. I'm sick of these wannabe NA dyno queens who don't understand that peak power is pointless without synergy of components in the complete machine. A 200 HP Vtek motor sux compared to something a little more level banded like Icemark's NA for example (I'm guessing he's got 200 at the crank because there is 170 at the wheels). I'm talking calculus here - energy released by the engine through the course of climbing the gears as well as that initially after launch. They call it area under the curve for a reason: it is the amount of joules of kinetic energy supplied _total_, not just at one given point in the RPM range. A fast car has power all over the power band, not just a high peak number, and will release a whole lot more energy to the tires over the course of a drag run than a peaky S2000 mill. Drag times are the only measure of straight line speed, and that takes the cake in the real world. HP numbers are for bragging rights, real world performance is the real measure of a car with its rubber on the pavement.

Yup. Another thing. Fast NA's aren't cheap. You've got to do some hardcore mods that most kids won't try to get into the 14s with an FC NA. Porting, loud a$$ exhaust, ditching a lot of comfort weight like sound insulation, AC, stereo, phat wheels and tires, stickerz, and neons. If I see another multithousand post veteran on this forum run a mid 16 with his FC I'm gonna flip out!

*edit* Make that a multithousand poster with *true duals* and bbs vert wheels running a mid 16!