I have done some searching and can't seem to find the answer. Does anyone know the difference between the exhaust on the 85 gs 12a with auto and manual. I want to order the cat delete pipe and all RB has left is the one for the auto 12a. Mine is 12a with manual. Will it work?

 

Rotary Performance sells a good "Bonez" cat delete pipe that doubles as a presilencer, for MT. $125 plus shipping:

http://www.rx7.com/store/rx7/saexhaust.html

They say it just replaces the main cat, but I think that is an error, the one I bought from them replaced all three cats, bolting straight up to the stock exhaust manifold and back to the mid pipe. Here's a photo:

 

Thank you! Unfortunately I already ordered the rb one. 100.00 shipped including the gaskets. Hopefully it will work.

 

You'll like it, I love mine.

 

[QUOTE=Chevsica;10409888]Thank you! Unfortunately I already ordered the rb one. 100.00 shipped including the gaskets. Hopefully it will work.[/QU
How did that pipe fit?I was told it wouldnt fit a 5 speed-Keep Us posted on how that cat pipe fit& What kind of mods were needed to make it work-Thanks

 

Got it last night. Eyeballing it looks like it will fit. Will know in a couple hrs. Going to swap my fuel tank today also. I will post back after I'm done.

 

How did that auto cat delete pipe Fit?What type of mod's were needed to make it Work If Any?Im interested to see If there is that much difference with a "automatic" style pipe.......

 

Well I swapped the fuel tank. Runs good now except for the idle issues, needs the carb rebuilt. Didn't get a chance to get the pipe in today. Will try tomorrow, weather permitting. I will let you know if it fits.

 

The one for the auto is 4.5 inches to long. Getting it cut and welded in a little bit and i'll post the results.

 

Other than makeing the pipe shorter-thats sounds like the pipe was a good deal at the price you got it for,I spoke with Racing beat& they werent sure what type of mods were needed...Keep us posted of progress.

 

They sold me the pipe for 55.00 and the gaskets were 10.00 a piece, shipping was 25.00. 100.00 total. The pipe is in. Cut 4 inches not 4.5 cause the flange is a half inch and it fit perfect! Still a little too quiet with the racing beat muffler that was already on it but oh well. Still sounds good! I am posting this from my phone. When I get inside i'll post pics of the progress.

 

Pics

 

more pics

 

Finished pipe and a pic of the car after it's first visit to the car wash. I will get some pictures of it installed tomorrow.