Understood and thanks, that's the set-up I am seriously considering as I want to shelf the distributor and run the Miata CAS and coils / ignitor.
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GTX build from Atlanta
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Originally posted by BFMRGTX View PostWildfire - Which MS system are you using? The: MegaSquirtPNP G2 MM9093 or: MS2 v3.0 Running MS2-extra ?
So my setup right now is the DIYPNP, which using a Mircosquirt board/processor, and 2 bip373 to drive my coil packs. Everything CAS/Coil is on their own wiring using the DB15(can't remember what number it is) and then the rest of the car is via the factory harness.
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Not to much of an update, the car has been in storage between moving housing and kids. Unfortunately while inspecting the car after moving it to the new garage I noticed the HKS exhaust was rusted in to many places so it's out. Ordered up a handful of parts for the new exhaust.
The plan is to run it from the turbo back, with a devorced downpipe. 2.5 out of the turbo with a 1.75 for the wastegate. Merge those into a 3" and run 3" all the way to the back.
Now to photos.
3" cat
1.75 and 2.5 piping
Muffler
3" bends
Vbands and steal plate for the turbine flange
Test sizing (this is where it goes between the body and the rear subframe) plenty of room getting the vband in there, so I should have plenty of room
Also have 7' of 3" piping not photoed. Hopefully this should be enough to build the the system. Or at least I should be able to get 90% of it from these parts :D. Now to try and find time to build the exhaust. Between work, and the 4 kids I don't get a whole lot of free time.
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3" is loud, but it shoudl be fun!. nice to see your using v-bands on this new exhaust.---Has ClubProtege helped you in someway? show your support by Contributing--- Click Here---
1992- project FE3..... 313 WHP @ 9.3psi
I pet my dash when I get into the car..."good car"he actually has a mazda tree, parts grow on it
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Originally posted by FE3-323 View Post3" is loud, but it shoudl be fun!. nice to see your using v-bands on this new exhaust.
First time working with V-bands but seems like it should really make working on the car in the future easy. I am sick of breaking exhaust bolts on the flange.
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BEWARE GRAPHIC IMAGES ... Well for anyone that knows how to weld
So I have been finding an hour here or there to work on the exhaust. So Photo dump incoming with some updates.
Finding the radius center point so I could work on "pie" cutting the bend to decrease the overall radius of the bend.
The first pass on the band saw
Comparing the first pass to the original part
Only picture I have of the second pass at the bandsaw
UGLY ass sin welds,
Starting to clean it up with the flap disk
Test fitting the new part. I'll have to clean up the face some and most like tap in a small section that is touching on the AC compressor. But it fits in the hole where the original bend wasn't even close.
Overall, I am slowly getting the hang of welding. At the start, I was getting some burn thought and such, but over the 20 minutes messing with this part, I got better at controlling the heat in the pipe and filling in the huge gaps. I'll have to do a second touch up with the welder as I already know I have a few pin holes.
I did realize I need to spend some time in the garage and setup a workbench in the new house. Having to knee on the hard floor well welding and grinder hurt. I hate getting old. Long term I'd love to get a nice welding table but for now a simple table not on the floor will have to do :D.
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what welder do you have? are you using shielding gas?---Has ClubProtege helped you in someway? show your support by Contributing--- Click Here---
1992- project FE3..... 313 WHP @ 9.3psi
I pet my dash when I get into the car..."good car"he actually has a mazda tree, parts grow on it
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Originally posted by FE3-323 View Postwhat welder do you have? are you using shielding gas?
Yea I still have a long way to go on my welding skills.
I think the side showing , was the first side I did and was much rougher. I was also having trouble at first with getting burn through, and so I kept starting and stopping, which doesn't help with the look.
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what size wire are you using? your not using flux core wire with shield gas are ya??---Has ClubProtege helped you in someway? show your support by Contributing--- Click Here---
1992- project FE3..... 313 WHP @ 9.3psi
I pet my dash when I get into the car..."good car"he actually has a mazda tree, parts grow on it
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Well I was having issues with V1 of Exhaust Turbine exit, or as I am more use to calling them 02 housing.
So the 2.5 pipe was a little to big to fit in the gap, mixed with a little oversized on the flange and just wasn't sealing up nicely(aka I suck at welding )
So started on V2.
Few changes:
Using 2.25 pipe that will step up to 2.5, and then that will tie into my 3" planned exhaust.
Pie Cuts cause I couldn't find anything with a tight enough CLR
Onto photos, which are now on Flickr, and I'll upload older photos at some point.
First I made a jig, so I could cut each side the same. The goal was for a 20 degree cut, but now I know if I line up side A with another Side A they would be the same angle, or stupidly close, and keep from getting to odd oval shapes.
Pie Cut Jig by b c, on Flickr
Handful of my cuts. I cut more so I could pick the different length to get my different shapes, and give me spares to practice welding the tight areas.
Pie Cuts by b c, on Flickr
First piece in the flange to make sure it fit, and with some guiding from a BFH, it fit.
Flange by b c, on Flickr
Testing my planned order.
Test Bend by b c, on Flickr
More planning
Test Bend with Flange by b c, on Flickr
I don't have photos but I tried to put it all in the car as a test. It's close, but doesn't fit like I wanted. It's close enough that once I get it bolted in, I can use the BFH to give a few taps and gain the little extra space I need between the AC and exhaust. But overall I think right now this approach will work.
After I get it all welded up, I'll need to use my small piping to make the wastegate piping and feeding that into where the 2.25 steps up to the 2.5. Then get a new 2.5 v-band clamp. This way I can use the clamp like the stock setup did, and allow the lower DP to be released from the upper DP. This way I don't have remove the A/C from the motor if I need to remove the DP to gain clearance for anything. Instead I can drop just the lower DP only.
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