sintri

Got an exhaust leak in the cat, gotta replace it. Apparently MagnaFlow 93678 is no longer being sold so currently just trying to order the cat itself which hopefully is in stock. Would however love to get rid of those 2 precats though mostly since the heat shielding's gone from it and it's been 33+ years anyways. Couple things, RB still sell a downpipe S16206 which looks like it should work? Also would it still pass safety without the pre-cats in VA? Car's not running antique plates but does meet 25+ years so no emissions needed.

Also side note, anyone know anywhere to get a replacement roofliner/sunroof assembly?

Hot_Dog

I've recently done some exhaust work on my S5, so maybe this will help: https://www.rx7club.com/2nd-generati...-week-1137807/

sintri

Took at look yesterday didn't notice the second update was different than the original Bonez, guess I'll order the downpipe. Worst case scenario I'll just have an extra downpipe sitting around. Think all the direct bolt cat replacements should be the same length.

Hot_Dog

The reason the cat needs to be 20" flange-to-flange is so that it matches the length of the RB Pre-silencer (Presilencer for 86-88 RX-7 Non-turbo - Man Trans - Racing Beat). The RB Down Pipe p/n S16206 (Exhaust Race Pipes - 1986-92 Mazda RX-7 Performance Parts) and RB Header (Exhaust Headers - 1986-92 Mazda RX-7 Performance Parts) were both designed to be used with their pre-silencer which is also 20" flange-to-flange.

BTW, my used 2-month old Bonez Superflo system is up for sale at a very reasonable price. If you're interested, than please PM me to discuss the details.

sintri

RB S16206 to MagnaFlow 93678 is a couple inches too short to fit onto a stock system, had a weld a pipe in between to extend the length. Still a few other issues to resolve but will see if the safety guy is that problematic about missing the precats.

Side note, having issues finding information about the clutch cut switch or any other information about it asides from:
Last safety guy I went to brought it up, spent a bit looking and double checking for one, there doesn't seem to have been any installed on my 1986, nor anywhere it would've connected to. Found one source that they didn't require one until August/1986. Can't seem to find any other information, though given it's passed safeties for the past 15 years I'm assuming it never needed one?

Lastly, control arm replacements, any suggestions? Only new I can find is for Mevotech, Atkin has some posted for 500 but they're also for S5.

Hot_Dog

The '86 RX7's were not equipped with clutch safety switches. All Rx7's after '86 had clutch safety switches. On my '90, I took mine off about 15-20 years ago and have never had a problem passing my VA annual safety inspection.