ok well today i finally decide to do my first ever mod by my self. earlier in the week i bought my friends old exhaust set up (RB header, 2.5" strait pipe, magnaflow muffler)

i get the old exhaust off and install the RB header and decide to start the car up to see just how loud a rotary is with just a header hahaha (evil laugh)

hear is the video.
http://s4.photobucket.com/albums/y13...penHeaders.flv

any ideas?

 

the first experience is always the best. i loved it so much that i drove around for about a week with an open header.....it was deafening and i loved it. that was many years ago though, lol. nothing i would do now.

 

pull choke **** yah **** lol just kidding they sound awesome run it all the way back to a megaphone

 

i had the choke out and it just dies.

 

Mine was a bitch to get going with no headers at all just running off block.

 

I asked the mufflershop to install my RB headers, cat-replace-pipe, to my magnaflow muffler and when he fired it up at the shop he said it was louder than his 9 sec drag Falcon with a big block ford motor. God these cars are fun

 

Sounds like it's only running on one rotor. Without any backpressure, it's going to be really cold natured.

 

well im going to put the rest of it on tomorrow and see if that makes any difference, i hope it does.

i'll take video

 

I tried running mine on the stock header without the exhaust after removing my cats and it ran fine, just a little on the noisy side (although not as bad as you might expect and as some people claim, kind of like yours, only it kept going and idled smoothly).

I suspect something else happened while you were doing the work on the header. You might want to check over your ignition components, choke cable and adjustment, fuel flow, etc.

PS, I love the skinny tires!

Ray

 

Yea that's one rotor not firing.

 

yeah thats the sound of one rotor almost sounds like its not getting gas!

 

Like everyone else said, definitely only running off of one rotor.

 

What year? Check the Shutter valve if equipped.

 

Please post a vid of the full exhaust on it....im planning on doing close to the same exhaust set-up in the next few weeks.

 

its an 85

it was running just fine when i pulled it on to the ramp. all i did was change the oil, fule filter, air cleaner and put the header on.

TeamSMS i will take some video of the full exhaust on tomorrow if i can find out the problem.

 

Ok thanks man....only thing that will be different on my setup is that im going to run an HKS hi-power muffler.

 

yea im not sure if im going to stick with the magnaflow, its just to big looking. but i'll try it



just for fun hear is a drive by right before i put on the header. i was going to do a exhaust comparison video.


http://s4.photobucket.com/albums/y13...X7_Driveby.flv

 

how big is the tip on the magnaflow? Im going to use the HKS Hi-power turbo muffler....3" inlet 4.75" tip. Im going to build my extra motor in the future for a turbo set up and dont feel like buying an n/a hks muffler for 250 then have to buy the turbo version for 270.

 

Does HKS work with rotary?

 

....HKS makes exhaust for fd's....so im sure it will withstand the heat. Also it is HKS....so its going to be good quality.

 

cool, i did not know that

 

check spark plus...

 

to verify if it's a one rotor motor, after trying to start it a few times put your finger on the exhaust port sleeve, see if it's warm.

pumping the gas pedal to the floor five times before starting should do it.

 

bad leading spark coupled with a good trailing spark could equal burning hot header rather quickly... be careful...

 

Ok well still check it. If the butterfly closes it will starve one of the rotors. It only takes a second to check.