steveskyhawk 2 Posted January 28, 2010 Has anybody had any luck getting an original style muffler from a local shop? Is the 88-90 different fom the 91? I have a 91 with a bark and it quiets down when it gets warm. No two of my cars drive exactly the same. They all have a personality all their own. Share this post Link to post Share on other sites
Greg Ross 2 Posted February 1, 2010 Steve,Your '91 has a 2-1/2" diameter system, pre-'91 is 2-1/4" diameter. Expand your horizons a little, search for a '91-93 Riv. muffler and see what materializes. Share this post Link to post Share on other sites
steveskyhawk 2 Posted February 1, 2010 Greg,Did the Riviera mufflers have the same dual tailpipe? Share this post Link to post Share on other sites
DShip 305 Posted February 1, 2010 Steve,No, the Riviera did not have the dual tailpipe. According to the 86-93 Riv/Reatta parts book:1986-87 E57 (riv) muffler w/ tailpipe part # = 16387851998 E57 (riv) muffler w/ tailpipe part # = 1645667961989-90 E57 (riv) muffler w/ tailpipe part # = 16494131988-90 E97 (reatta) muffler w/ tailpipes part # = 16477351991-93 E (91 riv & reatta; 92-93 riv) w/ tailpipe part # = 3531037This info would indicate that 88-90 Reatta would have had dual tailpipes, but not the 91. Could you cut the duals off the old and weld onto the new? I've done this on my two 92 rivs...had the muffler shop cut the end of the tailpipe off and weld on chrome ones.Hope this helps... Share this post Link to post Share on other sites
steveskyhawk 2 Posted February 1, 2010 I was hoping that there was an easy fix but I guess that using the old tailpipes is the only way to do it. Thanks guys. Share this post Link to post Share on other sites
padgett 875 Posted February 1, 2010 Could go for the schoolbus look... Share this post Link to post Share on other sites
barra 0 Posted February 2, 2010 When I had to replace the muffler on my 1988, both the dealership and a muffler shop got mufflers with dual outlets but had to configure exhaust "tips". Both assured me that going with a single outlet was just as functional as the duals, just a little louder. Share this post Link to post Share on other sites
steveskyhawk 2 Posted February 2, 2010 "Could go for the schoolbus look... "Padgett, why is it you know so much about school busses? Share this post Link to post Share on other sites
Greg Ross 2 Posted February 2, 2010 Ok Steve,I'ts' on to Plan "B"Source a stainless "aftermarket muffler 2-1/2" inlet (for your '91) and I'm assuming 2 off 2" outlets (best measure!) and have the tips lopped off the old and attached to the new.And the School Bus Look is just really coming into vogue, that's the single 4" straight pipe that makes that sad weezing sound. Share this post Link to post Share on other sites
padgett 875 Posted February 2, 2010 For anything up to six cylinders and without a wild cam, your best exhast is a single pipe to maximise the extraction effect. The Reatta system is single anyway where you need the least restiction (hottest) so dual tips is more for styling, routing, or ground clearance than power. Share this post Link to post Share on other sites
Richard D 10 Posted February 2, 2010 My 90 coupe has a single chrome tip that is oval in shape and fills the space that the dual factory pipes took perfectly. It might have a little more growl when taking off from a stop but after it shifts into second it gets quiet. Share this post Link to post Share on other sites
gotitright 3 Posted February 3, 2010 That oval tip looks good! Share this post Link to post Share on other sites
63viking 99 Posted February 3, 2010 Heck, I got two of them. Share this post Link to post Share on other sites
steveskyhawk 2 Posted February 3, 2010 Turns out I need a cat. Muffler availability is a PITA. Thanks to everybody for their suggestions Share this post Link to post Share on other sites
mhuffy 10 Posted February 4, 2010 When time comes - I want to use the camaro dual as outlined in a previous post. I would have done it a month ago, but was scared to make the cut on the black under the bumper. Share this post Link to post Share on other sites
steveskyhawk 2 Posted February 4, 2010 Had the cat put on today and now she purrs again. Share this post Link to post Share on other sites
Reatta Forever 10 Posted July 10, 2012 Does anyone know the camaro muffler brand and part # that best fits the 88' to 90' Reatta. Preferably one in 2 out. Thanks, Reatta Forever Share this post Link to post Share on other sites
Ronnie 1,296 Posted July 10, 2012 This link should help answer your questions.Camaro Muffler Installation Share this post Link to post Share on other sites
NCReatta 198 Posted July 10, 2012 I recently installed a used Camaro set up on my '89. It came off a parts car, so I'm not sure the part #, but I know it's a flow master.Sent from my mobile device using Forum Runner Share this post Link to post Share on other sites
Ronnie 1,296 Posted July 10, 2012 The mufflers are available in The Reatta Store . Both Walker (stock sounding) and Flowmaster (Loud) are there. Look in the Engine and Trans category. Share this post Link to post Share on other sites
Reatta Forever 10 Posted July 10, 2012 I checked up on the Walker muffler #18104, in the Reatta store, by calling Walker tech support. They said that you CANNOT switch the in with the out as in Barney Eatons "Camaro installation" setup. Any other muffler brands and corresponding #'sI did come up with one by Magnaflo. Magnaflo performance #18450 with the measurements of 5"x11"x22" overall 28"/ 2.5" in 2.25" out. The in is on one end the 2 outs are on the other. Very close size fit compaired with the O/E Reatta. I've been told with these specific dimensions (You can pick several different) it should be modeately quiet, because of it's length. The shorter length the more loud.Any thoughts? Please share. Thanks, Reatta Forever (Steve) Share this post Link to post Share on other sites
Ronnie 1,296 Posted July 10, 2012 I checked up on the Walker muffler #18104, in the Reatta store, by calling Walker tech support. They said that you CANNOT switch the in with the out as in Barney Eatons "Camaro installation" setup. Any other muffler brands and corresponding #'sI did come up with one by Magnaflo. Magnaflo performance #18450 with the measurements of 5"x11"x22" overall 28"/ 2.5" in 2.25" out. The in is on one end the 2 outs are on the other. Very close size fit compaired with the O/E Reatta. I've been told with these specific dimensions (You can pick several different) it should be modeately quiet, because of it's length. The shorter length the more loud.Any thoughts? Please share. Thanks, Reatta Forever (Steve)Thanks for checking out the Walker muffler. I thought I had saved a link to a post where a Reatta owner said he had used the Walker muffler for a Camaro to do his dual exhaust. Since I'm not able to find it I will remove the Walker muffler from The Reatta Store.What about the Flowmaster muffler in the Reatta Store? It has the same pipe sizes as the Walker muffler. Any info on it working? Share this post Link to post Share on other sites
Reatta Forever 10 Posted July 11, 2012 Thanks for checking out the Walker muffler. I thought I had saved a link to a post where a Reatta owner said he had used the Walker muffler for a Camaro to do his dual exhaust. Since I'm not able to find it I will remove the Walker muffler from The Reatta Store.What about the Flowmaster muffler in the Reatta Store? It has the same pipe sizes as the Walker muffler. Any info on it working? I didn't check out the Flowmaster because I was interested in a quieter sound. I can check it out tomorrow. Share this post Link to post Share on other sites
Reatta Forever 10 Posted July 11, 2012 Ronnie, I checked back with the Reatta store to get the part # for the Flowmaster muffler and it's not there. Can you supply me with the number. Thanks, Steve Share this post Link to post Share on other sites
Ronnie 1,296 Posted July 11, 2012 Thanks Steve. I removed them both until I can verify something that will definitely work. I don't want to take the chance of someone getting the wrong part if I can help it. Thanks again for checking out the Walker muffler and verifying it being the wrong one. Share this post Link to post Share on other sites