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-   RX-7 2nd Gen Specific (1986-92) (https://rotarycarclub.com/forumdisplay.php?f=37)
-   -   3" exhaust and failing aux ports (https://rotarycarclub.com/showthread.php?t=12020)

Silver86 08-12-2010 01:27 PM

Quote:

Originally Posted by NYsNumba1Man (Post 125935)
Location of actuators? Would there be a BIG notice? My car gets to redline without any problems at all, it doesn't strain or hesitate or anything.


left side of the engine bay. attached to the LIM, above exhaust manifold. cant miss them.

bryant 08-12-2010 01:49 PM

my 87 na was open header no exhaust and was so loud you had to scream at the person next to you just to talk to them. at idle
at 3000rpm the hat on my head was vibrating like i had two 15's.
i loved the way it sounded but the cops sure didnt.

funny thing when you would drive by people they would look at you and cover there ears.lol

project86 08-12-2010 05:51 PM

Quote:

Originally Posted by bryant (Post 125945)
my 87 na was open header no exhaust and was so loud you had to scream at the person next to you just to talk to them. at idle
at 3000rpm the hat on my head was vibrating like i had two 15's.
i loved the way it sounded but the cops sure didnt.

funny thing when you would drive by people they would look at you and cover there ears.lol

haha i drove mine for 2 days right off the presilencer... i know exactly what you mean. She was settin off car alarms :001_005:

NoDOHC 08-12-2010 06:48 PM

I had RB headers feeding through a straight pipe to dual Dynaflow mufflers and with a stock port, it wasn't loud at all.

With the streetported 4-port, I had to add a presilencer.

If the headers are really thin, you will get a loud exhaust, thick headers are your friend.

diabolical1 08-12-2010 07:28 PM

Quote:

Originally Posted by NoDOHC (Post 125986)
... thick headers are your friend.

where a rotary's exhaust noise is concerned, thick pipes in general are your friend.

NYsNumba1Man 08-12-2010 09:54 PM

Alright, i'll check out my aux ports tomorrow then.

If i DO have an exhaust leak at my headers will replacing with RB headers make it sound better? or will it just be louder?

Phoenix7 08-12-2010 11:38 PM

Quote:

Originally Posted by josh18_2k (Post 125830)
the stock manifold really quiets things down. With a header it will indeed be loud as shit. I had a greddy power extreme dual exhaust (two very big cans) and it was still intolerable. I would never put a header on a daily driver

I have RB headers, midpipe and HKS old-school catback on our NA...we DDed that car until we got the bimmer. You CAN have straight pipes on your NA but you need to have a GOOD catback to quiet it down.

Before the HKS (52mm) catback we had Apex-i N1 Duals and they were definitely LOUD and intolerable...to the point that we bought earplugs. Maybe I'm just too old for the loud exhausts?

If you have an S4 you also have to make sure you get the S4 midpipe that incorporates the "split-air pipe" so you can actuate the Aux ports via backpressure.

My5ABaby 08-12-2010 11:43 PM

Quote:

Originally Posted by Phoenix7 (Post 126016)
Also make sure you get the S5 midpipe that incorporates the "split-air pipe" so you can actuate the Aux ports.

S4...

Phoenix7 08-13-2010 12:04 AM

yeah, I edited it to reflect right info. I wonder how the RB rotary mufflers sound on open pipes.

Also, the HKS catback I have doesn't shoot flames...Just thought I'd throw that out there. It really makes the NA quieter than open pipes but no fire.

NYsNumba1Man 08-13-2010 12:20 AM

^^Same. I get backfire but no flames......

Phoenix7 08-13-2010 12:32 AM

Here's the HKS 52mm catback:
http://rotarycarclub.com/rotary_foru...2118f215c1.jpg
http://img.photobucket.com/albums/v1...2mmExhaust.jpg
http://s256.photobucket.com/albums/h...=Trackday1.flv
^^Please ignore my commentary and listen to the sounds around 15 seconds in...that's as loud as the car was. I don't have any other sound clips but I'll make sure to get some once I finish installing the new motor.

OLD N1 Duals:
http://img.photobucket.com/albums/v1...exansrajah.jpg

mnrthrt 08-13-2010 01:25 AM

Quote:

Originally Posted by Phoenix7 (Post 126020)

Holy shit! ha Huge tips on those Apexi's. Wish I could have heard a sound clip of that. ha

project86 08-13-2010 01:51 AM

Quote:

Originally Posted by mnrthrt (Post 126022)
Holy shit! ha Huge tips on those Apexi's. Wish I could have heard a sound clip of that. ha

they are retarded loud. I had a single... it might have made me def

mnrthrt 08-13-2010 02:08 AM

ha One good thing about being in Afghanistan is that with all the low flying planes and rockets and other shit, I'm pretty much already def. lol HEADERS WITH NO EXHAUST HERE WE COME! hahaha j/k

Phoenix7 08-13-2010 02:31 AM

it sounds like sex on wheels for about 10 minutes...then the drone at highway speeds vibrates the whole car and the insides of your head. Even at LOW RPMs the car was loud.


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