Camrann

Do street ported motors sound diff.

Stanello

iTrader: (1)

Not really

88t2romad

it would depend on the port, like if it was milled to open earlier, that would cause a little overlap

jacobcartmill

iTrader: (6)

yes they sound different. its really more dependant on the size of the EXHAUST porting, since thats where the air leaves the engine and out the muffler. but yeah, generally, ported rotaries sound more "blatty"

NSBerkland

*brap**brap**brap**brap*

KompressorLOgic

iTrader: (6)

brige port sounds alot diff! or prephial,, my t2 with vacume leaks sounds like a bridge port, brap brap, haha

Sideways7

iTrader: (7)

Like they said, the exhaust port has a much bigger impact on the exhaust sound. Most of the time, the exhaust port is ported along with the intakes according to the size of the intake porting so people associate the louder sound with the bigger port.

AreExSevenProject

iTrader: (1)

im thinking maybe my engine is streetported...

texFCturboII

iTrader: (17)

*bbBBBRRRAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA AAAPPPPP*

totallimmortal

beat me to it, they sound sexy

Aaron Cake

iTrader: (1)

If you want to know, pull the inake and exhaust manifolds and check the ports for evidence of work.

Otherwise it's just guessing. A "street" port won't effect sound that greatly and should not effect vacuum readings.

More radical porting will make a large difference in both.

CyberPitz

Pretty much echo what Aaron said. you start getting to the different sounds when you hit bridge port, and your really just hearing a lumpy idle :P

new2mazda

iTrader: (1)

sounds like the rotary is digesting a v8. =P sexy

J-Rat

iTrader: (2)

Mine sounds and idles like a stock motor does.

coxxoc

iTrader: (3)

It depends on the size and timing of the porting. As with anything else, when overlap is introduced, the sound will change. Mine doesn't sound stock. It's lumpy.

Josh

eraser13bt

so what if it goes brap *brap* brap* brap* really fast

eraser13bt

Here is the Idle ( NAME THAT PORT!?!?!?) lol.
<embed width="448" height="361" type="application/x-shockwave-flash" wmode="transparent" src="http://i113.photobucket.com/player.swf?file=http://vid113.photobucket.com/albums/n227/reliantk03/MOV-00092.flv">

DavidHolmesIII

That sounds like no port job that i've ever heard...Sounds to me like thermowax/bac malfunction, vacuum leaks.. I dont know. Good god.

CrackHeadMel

iTrader: (2)

sounds like a lumpy 5.0...

SpooledupRacing

Sounds like a bad TPS..

eraser13bt

See we thought it was bad TPS/ leak/ other sensors, and we replaced all sensors and a ton of other stuff. the motor came from Japan with a Pan sport ECU. It makes 242 hp at 11 psi on stock S5 turbo. I just figured it had a massive port.

SpooledupRacing

Did you have that dynoed personally... sounds a bit made up..

Just because u replaced the sensors if u did not put them in spec (adjust them properly) they will act up.

Maybe a bad ECU

eraser13bt

ill post up the dyno sheet as soon as i get near a scanner. every thing is with in spec with accordance to the FSM.

Stanis

iTrader: (2)

You have the WuTang port



I have a street ported motor. The exhaust was ported earlier and the over lap wasn't changed too much. It still sounds about the same as it did before porting. With the exhaust port, it's just a little louder, but not too much.

AreExSevenProject

iTrader: (1)

well maybe ill pull it off some rainy day when i have nothing to do. I thought this all because i have a lot of power in my N/A...more than what ive normally seen. It has more power than my friends turbo II. and the idle is wierd and sometimes sounds like it is missing...and just sounds...well a lil different. The car was owned by a rotary shop 2 owners before...