Multiple Ports on One Housing

[TXRota]

Same reason anyone does anything to a rota...more power

[RotorDad]

Originally Posted by TXRota

Same reason anyone does anything to a rota...more power

What are the plans for the vehicle, what kind of goals were you looking to achieve. I could be wrong, but I think Ted's question of why is looking for info. That way the members here can better suggest options for you & point you in the right direction.

[RETed]

Originally Posted by TXRota

Same reason anyone does anything to a rota...more power

More power...where?
What kind of racing?

Bridgeporting was invented to get around racing rules back in the day.
With the increase of overlap, you get your +'s and -'s.

Peripheral porting was invented to give you all-out power with all the +'s and -'s of the increased overlap.

There is no advantage to do BOTH unless you're trying to show off.
The PP's are going to require custom work to do as stand-alone induction or if you're trying to incorporate them into an existing side-port intake system.
Both increase overlap significantly.
If you're going to go PP, go big or go home.

I've heard small PP + side port called:
*Combi port
*Combo port
*Mystery port
*Semi PP
With a stockish primary side port + small PP secondary (and sometimes stockish secondary side port), you can stage the PP's to kick in at higher RPM's, which allows you to have a very tame engine at idle and low RPM's but serious power on the top end.

Again, I don't see the logic to BP and PP the motor at the same time...

Hell, just get a T04Z, stand-alone, water injection and crank the boost up for 600hp and call it a day...
(Waits for RICE RACING...)


-Ted

[RICE RACING]

I have said this many times over and will again here. Porting is not needed on 13B turbo engines.

If its N/A then of course you are challenged as to how many oxygen molecules you can aspirate into the engine.

When however you are forcing them into an engine under the effect of a compressor then the simple facts are "porting" any type is just not needed for these motors, unless of course you want an engine that makes LESS mid range power, and is more effected by running any type of normal exhaust system ........ it's all too easy to actually go backwards when porting rather than improving your engine, especially if you want a FAST car and not a DYNO QUEEN.

As Ted said, I run 30+psi, well over 600bhp, and all on a stock std engine (in every way), just with a simple turbo, a ghetto ECU, and allot of colonic irrigation forced into the turbo's anus to keep it all happy

I was using comby ports in 1994 or so (need to scan my old pictures!) small PP's, full bridges, J ports, full Peripheral ports, street ports, you name it I have run it................. in my own car near 20 years later I run a stock std port & love it And I came across this by a simple re-build I did for a friend in 1998, I remembered that and changed my own mega street port to a stock ported block and its better in every way, let alone the bridges and peripheral combo's, they are all just a waste of time on a turbo equipped car.

[RETed]

bahahahahahhahahahaha


-Ted

[TXRota]

Originally Posted by RICE RACING

I have said this many times over and will again here. Porting is not needed on 13B turbo engines.

If its N/A then of course you are challenged as to how many oxygen molecules you can aspirate into the engine.

When however you are forcing them into an engine under the effect of a compressor then the simple facts are "porting" any type is just not needed for these motors, unless of course you want an engine that makes LESS mid range power, and is more effected by running any type of normal exhaust system ........ it's all too easy to actually go backwards when porting rather than improving your engine, especially if you want a FAST car and not a DYNO QUEEN.

As Ted said, I run 30+psi, well over 600bhp, and all on a stock std engine (in every way), just with a simple turbo, a ghetto ECU, and allot of colonic irrigation forced into the turbo's anus to keep it all happy

I was using comby ports in 1994 or so (need to scan my old pictures!) small PP's, full bridges, J ports, full Peripheral ports, street ports, you name it I have run it................. in my own car near 20 years later I run a stock std port & love it And I came across this by a simple re-build I did for a friend in 1998, I remembered that and changed my own mega street port to a stock ported block and its better in every way, let alone the bridges and peripheral combo's, they are all just a waste of time on a turbo equipped car.

That simple huh, I never heard of that, & I was plannin on runnin a full or semi pp 13bt...what's the flaws w/ that setup, if I jus wanna be where you at w/ 600hp, I wanna make a good 550-600 WHP tho

[RICE RACING]

Originally Posted by TXRota

That simple huh, I never heard of that, & I was plannin on runnin a full or semi pp 13bt...what's the flaws w/ that setup, if I jus wanna be where you at w/ 600hp, I wanna make a good 550-600 WHP tho

I just came back from a drive this morning. Look I am not an Astronaut but I say driving my car and accelerating down the road in 3rd and 4th gear is like a space shuttle launching.... it is FUCKING IMPRESSIVE and super quick.

I would give you a plasticine clad warranty that if I used your exagerator 3000 dyno shit heaps in USA my car would show you the power you want lol. There is another poster on this site who did dyno his FD3S set up (running same turbo and similar set up) @ 27psi and got 530rwhp (on a low reading dyno according to him) and he traps 140mph in 1/4 mile in a full weight car. It does 100kmh to 200kmh slightly slower than my RX7.

There are lots of people who know how to do this, just you wont find them on the internet, and most don't have inferiority complexes and don't need to show it off to others either (this is not a comment on anyone its just how it is).

I have a 600+rwhp car on my web site, which is off an Australian dyno which would read much lower than an inertia dyno, anyway that cars acceleration compared to my own (non bridge ported car) running a smaller turbo is btw is equal

For you to have any hope of running the power I use everyday in my RX7 you need an unbelievable chassis (RX7) I use top spec Ohlins shocks (customized by me) and RACE TIRES (I use 18" Toyo R888 275 width) IF you don't have any of that all you will achieve is smoked tires @ 90mph in 3rd gear. My car has so much power that I actually only run 23psi in 2nd gear, 30psi in 3rd gear and 36psi in 4th gear. The need for a bridge port or combi port and or a T51 turbo (I use a T04Z) is not only not needed it not recommended for it WILL make the car slower on the street and not faster at all.

Stock std 13B-REW and WM50 injection

[RICE RACING]

You wont beat the mid range punch of a stock port motor and you will never equal the turbo response of a T04Z.

They make more than enough power, you just have to use the turbo the way the rotor god almighty intended and run it at proper boost levels, and that is unlocked by using water injection.

Big ports and bigger turbos are NOT the way to go.

[RICE RACING]

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