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-   -   Mazsport Midpipe owners (https://www.rx8club.com/series-i-aftermarket-performance-modifications-23/mazsport-midpipe-owners-164164/)

alz0rz 01-19-2009 08:04 PM

how thick are those things?

AJ's Shinka 01-19-2009 08:06 PM

^^^Interesting, I was able to connect it back together and put it in the bung but it was a tight stretch. Good news, no CEL thus far and I took it for a drive today! I think that little spring on the o2 sensor is the problem to my tiny vibration. I can live with it but I'm a stickler when it comes to my car. :) brb.

Alrzorz- how's it coming?

I didn't see this...


Originally Posted by alz0rz (Post 2825052)
Soon.. i hope to get these gaskets in tomorrow and possibly getting it on tomorrow night if my dad is cool enough to let me borrow one of his lifts at work.

Q: what gaskets did you say you tore? the stock cat ones? or the ones provided to you with the midpipe?

The stock cat doesn't use any gaskets (you'll see when you take it out) and they just end up braking so I didn't use them. It was the front one closest to the header looks like a triangle. Most people left them out due to them blowing all the time anyhow. We didn't use a lift just a little jack and crawled underneath. Did I tell you all the bolts in the front are going to brake? I have worked on 3 of these already and each time they stripped or broke so don't get alarmed if they do. Did you get bolts with your midpipe from setsuwa? Because you won't be reusing your stock bolts.

05rex8 01-19-2009 08:06 PM

:dunno:

spacers are half inch...?

another way I was thinking was to use some washers and longer bolts...but I don't know how well that would work

AJ's Shinka 01-19-2009 08:11 PM

Damn you guys post fast

Originally Posted by 05rex8 (Post 2825070)
with the AP from MM, you won't get a cel :)

I am running stock map for now.

Originally Posted by 05rex8 (Post 2825079)

I want this, you sell to me REX. :lol: What are those blocks made of plastic? I can probably find something that will suffice. I left the flimsy cross members off, they suck anyhow. I'll just buy some sway bars and call it a day.

alz0rz 01-19-2009 08:11 PM


Originally Posted by AJ's Shinka (Post 2825082)
^^^Interesting, I was able to connect it back together and put it in the bung but it was a tight stretch. Good news, no CEL thus far and I took it for a drive today! I think that little spring on the o2 sensor is the problem to my tiny vibration. I can live with it but I'm a stickler when it comes to my car. :) brb.

Alrzorz- how's it coming?

I didn't see this...



The stock cat doesn't use any gaskets (you'll see when you take it out) and they just end up braking so I didn't use them. It was the front one closest to the header looks like a triangle. Most people left them out due to them blowing all the time any how. We didn't use a lift just a little jack and crawled underneath. Did I tell you all the bolts in the front are going to brake? I have worked on 3 of these already and each time they stripped or broke so don't get alarmed if they do. Did you get bolts with your midpipe from setsuwa? Because you won't be reusing you stock bolts.

I've taken off my stock CAT.. there are definitely 2 gaskets there. One in the front and one in the rear. One is a ring and the other is a donut. The donut is fairly expensive.. $45 each. Neither of them will fit the Mazsport Midpipe.. which is why I gave up on my install when I did. I had to get gaskets that worked and Fluid Motorsports got me the exact hardware that came with the Mazsport Midpipe originally.. hopefully that'll arrive tomorrow.

I had my cat off a week and a half ago.. that is when I realized all this stuff... kinda late.. so I had to put it all back together.

alz0rz 01-19-2009 08:13 PM


Originally Posted by 05rex8 (Post 2825085)
:dunno:

spacers are half inch...?

another way I was thinking was to use some washers and longer bolts...but I don't know how well that would work

I was thinking that also.. washers and longer bolts would do?

05rex8 01-19-2009 08:16 PM


Originally Posted by AJ's Shinka (Post 2825092)
Damn you guys post fast

I am running stock map for now.

I want this, you sell to me REX. :lol: What are those blocks made of plastic? I can probably find something that will suffice. I left the flimsy cross members off, they suck anyhow. I'll just buy some sway bars and call it a day.

they are aluminum

05rex8 01-19-2009 08:17 PM


Originally Posted by alz0rz (Post 2825099)
I was thinking that also.. washers and longer bolts would do?

probably would work

AJ's Shinka 01-19-2009 11:13 PM


Originally Posted by alz0rz (Post 2825094)
I've taken off my stock CAT.. there are definitely 2 gaskets there. One in the front and one in the rear. One is a ring and the other is a donut. The donut is fairly expensive.. $45 each. Neither of them will fit the Mazsport Midpipe.. which is why I gave up on my install when I did. I had to get gaskets that worked and Fluid Motorsports got me the exact hardware that came with the Mazsport Midpipe originally.. hopefully that'll arrive tomorrow.

I had my cat off a week and a half ago.. that is when I realized all this stuff... kinda late.. so I had to put it all back together.

I did not see these at all! is it possible that I overlooked them? Rex did your stock cat have gaskets? :sweatdrop Glad I posted this and the whole time I thought I was helping you. :)

05rex8 01-19-2009 11:15 PM

yup, mine had gaskets. In fact I used them for my agency power midpipe before I sold it.

alz0rz 01-19-2009 11:24 PM


Originally Posted by AJ's Shinka (Post 2825397)
I did not see these at all! is it possible that I overlooked them? Rex did your stock cat have gaskets? :sweatdrop Glad I posted this and the whole time I thought I was helping you. :)

np dude, everything does help... if not to me then to anyone else reading a thread down the road.

this is the gasket in between the exhaust manifold and the stock cat:

http://www.mazdatrix.com/8pics/8exha...0-N3H1-Big.jpg

and this is the "donut" gasket between the stock cat and the catback:

http://www.mazdatrix.com/8pics/8exha...0-L398-Big.jpg

05rex8 01-19-2009 11:26 PM

I have one of these I'm not using...didn't use it with my turbo downpipe....didn't see a reason to.
I just remembered that... :)
http://www.mazdatrix.com/8pics/8exha...0-N3H1-Big.jpg

alz0rz 01-19-2009 11:28 PM

and these are the ones that are going to be used with the Mazsport Midpipe

http://www.fluidmotorsports.com/imag.../large/775.jpg

AJ's Shinka 01-20-2009 12:09 AM

Whew, I just took a look at my cat, and the gaskets are on there. We were working in the dark with just a spotlight and didn't even see them. :lol: I am relieved.:rock:

Man that midpipe sounds sweet. Did I mention my car is a lot faster now and smoother? My cat must have been really clogged. It feels like this is the way the Renesis was designed to run. :smoker:

alz0rz 01-27-2009 01:23 AM

All I have to say is WOW.

This midpipe is freaking amazing.

My dad got me some time to use the lift as his shop and I finally got it on with the gaskets provided to me by Brice @ Fluid Motorsports.

http://implux.net/~alz0rz/images/mdrm1.JPG

http://implux.net/~alz0rz/images/mdrm2.JPG

My dad's ingenuity.. voila spacers! It now has perfect clearance. I can keep my crossmembers.

http://implux.net/~alz0rz/images/mdrm3.JPG

Had to play around with the o2 sensor harness to get it to reach.

http://implux.net/~alz0rz/images/mdrm4.JPG

Afterwards I went on some nitrous spraying runs and OMG it's freaking beautiful. I wasn't really a flame guy until it happened.. and I nearly creamed. Right at the cusp of redline.

AJ's Shinka 01-27-2009 01:30 AM

Very nice! Was it just washers you used on the cross members? It is a really nice piece, makes you wish Mazsport didn't go out of business. This mod is a toss up between my AFE short shifter and the Mazsport midpipe for my favorite mod.

alz0rz 01-27-2009 01:35 AM

It's a longer bolt with 2 washers and a nut fitted in between. The clearance is perfect. I bet I could cooerce my dad into making a set of 8 for you if you'd like to pay shipping or something.

AJ's Shinka 01-27-2009 01:48 AM

Man that would be great, just tell me how much. Is that yellow stuff on the gaskets anti-seize?

alz0rz 01-27-2009 02:16 AM

http://www.youtube.com/watch?v=HnIYvACrIL8

HockeyRX-8 01-27-2009 08:56 AM

^sounds good Al!!

05rex8 01-27-2009 10:23 PM

congrats man, well worth the wait, eh?

alz0rz 01-27-2009 10:56 PM

Ah yes. The cool thing is at normal city driving it doesn't at all sound any different than the stock cat mated to my Borla, however at WOT or anything over 6k.. a different story. ;)

AJ's Shinka 01-28-2009 12:19 AM

Very nice I might consider this Borla setup.:squint:

alz0rz 01-28-2009 12:20 AM

Racing Beat is a bit more on the conservative side, the Borla has a deeper grunt and growl.

AJ's Shinka 01-28-2009 12:43 AM

At first I thought I wanted to be conservative but the more I think about it I want that growl.

alz0rz 02-01-2009 06:47 PM

http://www.youtube.com/watch?v=OPSvGUbhDcI

GuyWithRx8 05-29-2009 02:12 PM

Was anybody able to connect the o2 sensor back up, if you did, did you connect it to the hole in the pipe near the front or in the middle?

Or is there anyway to not have a CEL I have CEL code p00037 now. When I had a single resonated catless pipe I only had CEL for the first few months for p00240, I didn't have a single CEL for a year..catless the whole time.

I think if I could get the sensor to connect I wouldn't have a cel anymore, but it just isn't long enough

05rex8 05-29-2009 05:45 PM

the middle bung is for a wideband o2 sensor. plug it up if you don't have a wideband afr gauge

you were lucky not to have a cel in the first place with no cat...

GuyWithRx8 05-29-2009 07:45 PM

ok it currently looks like this. Are you saying I should put it in the other one between the two resonators? The other one currently has the bolt thing plugging it that came with it. Will it reach if I switch it to the other bung hole?





http://img35.imageshack.us/img35/1492/1145z.jpg

05rex8 05-29-2009 07:49 PM

the one plugged already is for the wideband sensor

the way you have it is the correct way...it will not reach the other bung

alz0rz 05-30-2009 12:25 AM

ah yes I remember I had that problem too I didn't think the cable would ever fit the originally way.. i routed it on the inside of the transmission bracing.. think creatively you'll figure it out.

GuyWithRx8 05-30-2009 01:26 AM

Oh I see, I missed this pic you posted


http://implux.net/~alz0rz/images/mdrm4.JPG




It looks like you moved the the cable/wire at the top of the pic

Also, is the cross brace supposed to actually touch the pipe? I'm not sure how big of spacers I need.

alz0rz 05-30-2009 01:30 AM

ah.. my car :(:(

so yeah I actually had to machine a small notch in the frame at that point..

and the frame won't fit at all without you doing some sort of spacer thing there

05rex8 05-30-2009 01:33 AM

I am confused as why you want to put the o2 sensor there. Just to get around a cel?

alz0rz 05-30-2009 01:33 AM

here i did it like this.. keep in mind I ran the cable inside of that bracing there (where I dashed the line)

http://implux.net/~alz0rz/images/o2wr.jpg

alz0rz 05-30-2009 01:35 AM

OH and I forgot to also mention I had to undo the plastic cable tie (or whatever it is) holding the cable ONTOP of the transmission.. that gave me enough slack to route it the way I did.

GuyWithRx8 05-30-2009 10:37 AM


Originally Posted by 05rex8 (Post 3045571)
I am confused as why you want to put the o2 sensor there. Just to get around a cel?

Ya I just need those two wires to connect up. It's annoying to have a cel on the dash every time I start the car up.

Alzors, thanks, I'll try to get it all figured out this afternoon

shazy 05-30-2009 11:13 AM

I c.

05rx8mazda 06-01-2009 04:41 PM

they bolt up just like the front.. get a bolt and a nut .. simple not that hard. order gasket rom fluid. or you can make your own.

Nadrealista 03-26-2011 08:01 PM

resurrecting this thread. just installed mazsport midpipe and have gasket and crossmeber clearance issues..

What gaskets(and size, ID for front and rear) do I need for the header side and catback side and where can I get them?

how do I fix crossmeber clearance issues?

alz0rz 03-26-2011 08:32 PM

pm RaceRoots about the gaskets and fashion up some spacers for the the crossmember bolts

Nadrealista 03-27-2011 05:10 AM

how thick spacers need to be?

alz0rz 03-27-2011 10:49 PM

how ever thick you need them to be.. get under there and trial and error with some washers.

olddragger 03-28-2011 09:08 AM

those gaskets will not fit our car---sorry dude--i have looked and looked myself. Ended up making my own out of aluminum and then using copper based exhaust sealent. The carbon ones for sale work well BUT they get very fragile. if you ever have to remove the pipe again they usually break.
OD

Nadrealista 03-28-2011 05:55 PM


Originally Posted by olddragger (Post 3926180)
those gaskets will not fit our car---sorry dude--i have looked and looked myself. Ended up making my own out of aluminum and then using copper based exhaust sealent. The carbon ones for sale work well BUT they get very fragile. if you ever have to remove the pipe again they usually break.
OD

funny I was also thinking to use just copper based sealant up front. and gasket at the back side...

why these wont work? wrong size?

olddragger 03-29-2011 08:09 AM

yep---the inside diameter is ok but we have a different bolt pattern than normally used on collectors.
I made one for the header by using two thin sheets of aluminum (cut out) and then using the copper based exhaust sealant in between the two. works ok.
OD

dannobre 03-29-2011 07:14 PM

1/8 in copper sheet makes awesome exhaust gaskets...you can anneal them and make them soft over and over...and they seal great. The only PIA is making them in the first place.....

Spin9k 03-29-2011 08:46 PM


Originally Posted by Nadrealista (Post 3925146)
how do I fix crossmeber clearance issues?

when I still had that sumobitches midpipe before that sucker stole it from me in the guise of 'fixing it'.... there was that vexiing crossmember clearance issue. I went to the hardware store (not stupid HD or Lowes) where they had the wall of little hardware boxes and got some spacers that fit over some extended SS bolts i got. That worked, but the undercar clearance was woefully little and I think it compromised the bracing the crossmember was trying to do.

The reason I had to return that piece of crap was that the front silencer is in no way strong enough to stand the heat of the rotary and everyhting in there turned to molton metal chard that rattled like crazy... pile of useless excrement that thing was as was it's cheating lying maker.

alz0rz 03-29-2011 09:21 PM

I had the Race Roots carbon gaskets on my old mazsport midpipe and although they have great fitment and seal well, once I dropped the exhaust to replace the catback, they were pretty much ruined.

SayNoToPistons 09-01-2012 05:13 PM


Originally Posted by olddragger (Post 3927364)
yep---the inside diameter is ok but we have a different bolt pattern than normally used on collectors.
I made one for the header by using two thin sheets of aluminum (cut out) and then using the copper based exhaust sealant in between the two. works ok.
OD

Bump. Having a dilemma finding gaskets too and not exactly a fan of one-time use gaskets by Race Roots. What thickness aluminum did you use and where did you get it? I tried the usual Home Depot and Lowes but didn't have any luck.


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