miataman04

iTrader: (1)

My exhaust is tight since I dump externally by the trans so it took longer to get that out of the way. IDK by yourself taking your time 6-8 hours to do it right. If all depends on your experience. My friend and I can get it done in 4 hours, but we both have several of these under our belt. If you are going to pull the engine soon and everything works for now, I would wait. With it out of the car it is easy to do.

miataman04

iTrader: (1)

I installed and tested my trans a few days ago.

04 5spd 20k miles $300
Motocraft $50
5X shifter rebuid $87
ACT throwout bearing $37
OEM pilot bearing $17
Full OEM seal kit $67

So $558 total. Next time I am going to go 6spd, I don't want to do that until I install 3.63s

Once I got all that together, I got some friends together and went to Eureka Springs Arkansas, about 4 hours from me. The Ozarks are great for running corners. Unfortunately it rained most of the time, oh well. The Cresent inn is there, it's supposedly haunted. Here are some of my pics.

miataman04

iTrader: (1)

I still can't get my BOV to respond correctly. I need some ideas.

Tial 50mm older model, it is mounted right by the inter cooler on the intake manifold side.

What I've done:

• Direct 1/4" source on intake manifold
• New 1/4" HPS hose (about 3' run)
• 7psi spring
• Took the BOV appart and lubed everything

Full_Tilt_Boogie

iTrader: (1)

Dont worry about it

Girz0r

iTrader: (1)

Need photo for reference of exact location. At the moment it just sounds like a slow valve

miataman04

iTrader: (1)

The line goes under stuff but you get the point, the source is under the brake booster line, a 1/2" threaded with 1/4" barb end.

miataman04

iTrader: (1)

Other than being loud as hell, won't that hurt the turbo and cause slower spool on the next gearshift?

Full_Tilt_Boogie

iTrader: (1)

Funny sounding? Yes.
Slowing the turbo down? Yes.
Hurting the turbo? No.

A fraction of a second of surge isnt going to hurt it. Surge is only a problem when it happens continuously, leading to harmonic, vibrating, destruction.

Lexzar

iTrader: (2)

This is much worse. You can hear it trail off indefinitely.

miataman04

iTrader: (1)

Oh yeah thats way worse.

18psi

iTrader: (76)

sounds completely normal to me

miataman04

iTrader: (1)

Its like 1 second's worth of surge, that is the annoying part.The car would be so much quieter if i could fix this. Here is another video, don't make fun of my grandma no redline shifting.

Full_Tilt_Boogie

iTrader: (1)

You may need to use a different vale and plumb it back into the intake or put a filter on it to muffle it.
I used a OEM Mitsubishi valve from a 3000GT at one point and it was very quiet, but they are apparently very leaky. Maybe something like a turbosmart or GReddy Type S.

miataman04

iTrader: (1)

I've thought about going to a turbosmart 34mm. My current BOV is v-banded so I will need to work on my pipes. I don't have wielder to change that myself. So I would have to buy the tidbits to change it or take the pipes to a shop. I would like it to be closer to the throttle body like the FM set up, buying from them is quite pricey.

concealer404

iTrader: (3)

Chalk it up to "doesn't matter."

That's not actually surge. Surge is under load. Every FM setup i've had/experienced has done the same thing.

If you want quiet you need to just put the biggest valve you can put on it. The old GFB i had on our MSM was earsplittingly loud (actually sounded exactly like yours), the hugenormous HKS Racing Type 1 i had on the MX6 was nearly silent until it was tasked with venting 30psi.

Braineack

iTrader: (62)

maybe a little too much preload on the valve, but it's not bad.

miataman04

iTrader: (1)

It's been a while since I posted anything, I've been waaaaaaay busy.

I'll start with the first thing, I finally finished my house and got moved in. I still have to finish out the shop but that won't take long. I'm so glad to be moved. I've got 4 kids under 8, we were staying in a tiny rental. It was hell. Now that I'm settled in, I'm hoping to get some things lined out on my car.






The day after I moved, it hailed really bad. My hood is covered in tiny little bumps. Thankfully I have full coverage insurance on the car. I've got enough money to replace the hood and paint the whole car. However new OEM hoods are not cheap and there isn't anything close as far as used parts go. I'm tossing around the idea of buying a whole running car so I will have some parts. I work on my friends miata's a lot so I would be able to sell all the little stuff if I did. So you'll probably see me grab another car soon.



After that I had to change the brakes on my Sequoia, the pads went out without warning and toasted the rotors with em, I spent a small fortune on EBC rotors and pads. I got the green stuff, hopefully they hold up good. I'm going to use my Sequioa to tow my miata to deals gap in august. I love my miata but 9.5 hours in it is quite a stretch plus I like being able to carry tools, tires and such. I'll be in a miata convoy so I bet I end up with some luggae too.





A few years ago, one of my close friends died. Before he did he made me promise to beat a corvette because I always wanted to do that. Although some time has past since then, I've not forgotten my promise. One of my other friends recently bought one, so once I get my car dialed in, I'm going to race it. It sure looks pretty.



Some last minute adjustments before a drive. I found that the ECU timing reading needed to be correctly calibrated.




Off to the dyno, the owner of the dyno has a few super cars. Here is the one he drove today. He has a lot of money but is one of the most down to earth guys I know.











So this is what I have fixed since the original run. I've started working with a tuner to do some remote tuning. We haven't touched the tune yet because we wanted to make sure all the small stuff was fixed first.

• New O2
• All new vacuum lines
• Re-routed the the cobbled up turbo piping
• Found that the ECU was not getting a boost signal at all, there was a huge hole in the line
• Re calibrated timing for the ECU
• Prayed to the turbo cat for more power

The results are kinda depressing. I threw my fist dyno on here. I am making more power but its not what I was hoping. At 18psi with this turbo and supporting mods I thought 300HP as a goal would be a cake walk to get to. Well apparently not. Although my car drives awesome and is super fast compared to all the Mustang GTs around here, it still isn't near my goal. I'm all ears for any advice anyone might have.



Just for fun I threw my last miata's dyno on here as well as my buddies BONE STOCK 06 miata. Thats a hoot, looking at those two cars makes me appreciate the power I do make more.

18psi

iTrader: (76)

Ouch.
lets see that timing map. do you have access to e85?

Dunno what mustang gt's your racing but that wouldn't even come close to mine, and definitely won't touch that vette.

but you're making real good progress

codrus

Do you have spool numbers? What A/R is the turbine?

Your torque curve is strange, most of the time with a big turbo you can see the point where the boost comes on because the torque curve suddenly shoots upwards, but yours is just a gradual climb from 3000-5000.

I don't think the 2.5" exhaust is doing your any favors, 3" would probably help a lot.

Have you done a leakdown test to evaluate the general health of the motor? How many miles on it since it was built?

Are you tuning the timing yourself, or is the dyno operator/tuner doing it? Are you able to get it to MBT, or is it detonation limited?

--Ian

sixshooter

iTrader: (12)

Are you using an EBC?