Multiple Ports on One Housing

[TXRota]

Does anyone have any experience or knowledge with porting the same housing multiple times?

[rxspeed7]

What do you Mean? If you port it bigger than the new port your screwed, I have ported housing that were previously ported. Of course the new port was bigger than the old one.

[TXRota]

Na combining ports on one housing...like bp & pp on one housing

[RETed]

Why?


-Ted

[RotorDad]

I'm pretty sure that a few have done bridge ported irons with semi PP housings. Try contacting Judge Ito, he was a member here. This would be combo porting not porting multiple times. Now on the other hand like RXspeed said you can enlarge a previous port job to a degree.

[TitaniumTT]

Ito is still a member here. His ego has caused HIMSELF to not want to post here anymore.

[Pettersen]

Just search semi pp.

http://www.rotarycarclub.com/rotary_...hlight=semi+pp

[RICE RACING]

Originally Posted by TitaniumTT

Ito is still a member here. His ego has caused HIMSELF to not want to post here anymore.

LOL

God Gift unto himself LOL

Just ask him

[TXRota]

It is multiple porting, porting a housing more than once on one housing

[RotorDad]

Going from a mild street to a large street to a bridge is multiple times, all these ports are in the irons / side ports. The peripheral port is in the housing so by having the semi peripheral I would say combo not multiple unless you are just talking about the irons.

BTW google can be your friend or the search feature on the forums.

[RETed]

(Still waiting for an answer to "Why?"...)


-Ted

[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.