Miata Turbo Forum - Boost cars, acquire cats.

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-   -   Intro turned hopefully epic build thread (https://www.miataturbo.net/build-threads-57/intro-turned-hopefully-epic-build-thread-80256/)

curly 09-21-2014 11:00 AM

That throttle body coupler is so clean it looks photo shopped.

Imma gonna move this to the build thread section.

92turbomiata 09-21-2014 02:47 PM

She runs! Drove it about 25 miles last night and everything seems ok so far. Got a bunch of tuning to do. I will post more info and pics later

18psi 09-21-2014 04:04 PM

nice. good job.

I think eventually you'll have to do something about the manifold being millimeters away from the mixing manifold - something tells me you'll melt the hose

Efini~FC3S 09-21-2014 05:11 PM

Props on the quick progress.

You've done in a month what's taking me almost a year, and I'm still not done.

I haz shame

92turbomiata 09-21-2014 09:20 PM

5 Attachment(s)
Few finished pics of the car after a much needed wash after it sat for 3 months! It's running strong and I'm not even in boost yet. Should be pretty gnarly once I add boost and get it tuned on the dyno.

https://www.miataturbo.net/attachmen...ine=1411348819

https://www.miataturbo.net/attachmen...ine=1411348819

https://www.miataturbo.net/attachmen...ine=1411348819

https://www.miataturbo.net/attachmen...ine=1411348819

https://www.miataturbo.net/attachmen...ine=1411348819

oh and I'll be putting an air filter on it too lol

hornetball 09-21-2014 11:48 PM

Looks really nice. My red car also had pinstripes when I bought it.

turbofan 09-22-2014 01:11 AM

Looking good. Air filter asap. In for results.

matthewdesigns 09-23-2014 10:30 AM

Great job getting this done so quickly, and cleanly to boot. Is that your 2Gb in the garage? You'll be way happier with the Miata :)

92turbomiata 09-23-2014 12:57 PM


Originally Posted by matthewdesigns (Post 1169572)
Great job getting this done so quickly, and cleanly to boot. Is that your 2Gb in the garage? You'll be way happier with the Miata :)

Thanks! It was alot of work but I'm just glad I get to drive it again.

Yes thats my 97 talon in the garage. Had it for about 6 years now, running on and off over those years. Built motor, turboed 420a. It's pretty quick but I started doing a bunch of work on it last July and never got it finished up and then bought my miata in December and haven't touched it since lol. I need to get her back up and running and painted.

92turbomiata 09-23-2014 01:06 PM

2 Attachment(s)
Well I spent the weekend driving it around and then chasing a misfire on cylinder number 3. Turned out to be a loose injector clip :-/

After I got that figured out she was running like a champ the rest of the weekend until I got to the muffler shop Monday morning to mate the downpipe with the rest of the exhaust. As I'm pulling it on to the lift it starts running rough like it was on 3 cylinders again and sounded different. Anyways I let them finish and then pull it outside and pop the hood to find the number 3 spark plug and wire had popped right out! Threads in the head were shot. Shame on me for not checking those threads when I first received it from the guy on ebay.

That led to this and a spark plug repair kit. This is only temporary until I find a good deal on a 99+ head. Did all this yesterday.

https://www.miataturbo.net/attachmen...ine=1411492008

https://www.miataturbo.net/attachmen...ine=1411492008

Got the threads fixed and put it all back together and couldn't get it running right for the life of me. I worked on it all night and finally gave up and then came back this morning with a clear mind. I must have redone and checked the timing 6 or 7 times and It was perfect everytime. Still ran on 3 cylinders. Took a break from that and changed the oil and oil filter and then went to think about it again.
When the spark plug came out the first time the spark plug wire had fallen on the exhaust manifold while they were doing my exhaust and melted some of the rubber insulation. Thought about it for a minute and thought, hey I bet its arcing to the cylinder head instead of the spark plug since electricity takes the path of least resistance so I grabbed an older "good" spark plug wire and put it on and fired it up. Ran like a dream......

Moral of the story, if your frustrated and can't get your car running right after working on it all day, take a break and grab a beer and then come back and look at it again. Lol

Everything seems to be running great again. Lets hope it stays this way so I can get on with tuning it.

Efini~FC3S 09-23-2014 01:29 PM

Jeez you work fast...

18psi 09-23-2014 01:30 PM

I have a super awesome VVT head for sale btw ;)

92turbomiata 09-23-2014 01:42 PM


Originally Posted by 18psi (Post 1169649)
I have a super awesome VVT head for sale btw ;)

I don't think my DIYPNP can control VVT, even if it could I'm pretty much out of outputs. I'm hoping I can find a 99 or 00 head here locally since it flows better but doesn't have VVT.

hornetball 09-23-2014 02:17 PM

Where is "locally"?

92turbomiata 09-23-2014 02:25 PM

Edited profile

92turbomiata 09-24-2014 12:18 PM

Got about 100 miles on it now and have hooked up the wastegate finally. Still being easy on it with conservative timing and not going above 6k rpm. Logs showing around 6-7psi with only about 60% throttle and letting off around 5.5k. This is on a 8psi actuator. I think I need to adjust it a little more to add some more pre-load since I think it should be spooling quicker given the 11:1 compression and 1.8 engine. She pulls pretty good though, still running a bit rich but I am having a buddy of mine help me tune it tomorrow so hopefully we can get it dialed in and add in some timing. Oh and all this extra torque is amazing :jerkit:

Not sure if I like this hks ssqv. Its one of the cheap ebay ones that I grabbed off my other car since I had to redo the intercooler piping. It flutters with anything under about 5psi, above that and it seems to work ok. I think I will be going back to my type RS bov that I had on it before. It worked like a dream and sounded good to boot.

rwyatt365 09-24-2014 01:14 PM

in for the durability of the CXRacing mani (been secretly looking at it, but didn't want to be a Guinea Pig).

92turbomiata 09-24-2014 01:26 PM


Originally Posted by rwyatt365 (Post 1170006)
in for the durability of the CXRacing mani (been secretly looking at it, but didn't want to be a Guinea Pig).

its been fine so far for the first 100 miles or so but time will tell. So far so good though.

A couple issues I ran into with it. 1 the number 1 runner is so close to the water pump inlet that it was tough to get the hose on it. First start up it started melting the hose a little bit :facepalm: I have wrapped it in that DEI heat tape stuff as a temporary fix and its been fine so far but I'm going to have to take that water pump inlet off and cut it about an inch shorter and have it rewelded to get that lower hose away from the manifold.

Second issue was with their downpipe. It fits ok but I had to remove the little ear off of the transmission to get it to clear. It also very slightly hits the firewall at certain rpms. I haven't messed with that yet but I'm hoping I can turn it just a little bit since its a v-band downpipe so it will stop rubbing the firewall.

matthewdesigns 09-24-2014 06:11 PM


Originally Posted by 92turbomiata (Post 1169980)
I think I will be going back to my type RS bov that I had on it before. It worked like a dream and sounded good to boot.

What spring(s) do you have in it? I got sick of trying to adjust the flutter out of mine and yanked it. Went back to a 1g DSM valve.

ahawks9er 09-24-2014 07:40 PM


...if your frustrated and can't get your car running right after working on it all day, take a break and grab a beer and then come back and look at it again.
Solid advice. Glad you're getting it all dialed in.


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