Well the snow slowed me down for a while, but I got back to working on stuff again. Allow me to share some of my aluminum porn.

The intake heat shield thing.

https://www.miataturbo.net/attachmen...ine=1454888824


https://www.miataturbo.net/attachmen...ine=1454888824


https://www.miataturbo.net/attachmen...ine=1454888824


https://www.miataturbo.net/attachmen...ine=1454888824


https://www.miataturbo.net/attachmen...ine=1454888824


https://www.miataturbo.net/attachmen...ine=1454888824

Working on a gasket to fill the void around the intake tube. I'll finish later this week.

https://www.miataturbo.net/attachmen...ine=1455418025

Starting this thing now. 1/4" plywood. Going to use 2Ayer of cloth, top and bottom. Motivation is dwindling @ 17°F.

My buddies toy he is working on. The new Yamaha 1000cc side by side.
Three cylinder
GTX 2870?
20 psi
300 to the wheels.
Thrice pipes
Flames.

https://www.miataturbo.net/attachmen...ine=1455676514

Motor is so pretty. I need to make my engine bay look 1/2 that good!

Skimmed through your thread today! Your build is awesome! I need to start my build thread on here sometime soon, just don't have the time.

Btw, let me know about that oil pan tonight so I know to get it boxed up or not!

Thanks for the compliment. It has been a journey. I'm on the fence with the pan. I have a ton of leftover partz, so I was just going buy it, weld a -10 bung on, then flip it to the MT community. Not sure what the market is like though. I think most people just drill n tap.

You make serious progress though. I seem to move at a snail pace.

So much win :D


Cleeeean engine bay & setup :bigtu:

I NEED

A wing. Someone put something up.for sale.

Here you go.

Only $300


https://www.miataturbo.net/attachmen...ine=1455773350

I guess I should be more specific.

Angel Wings?
https://www.miataturbo.net/attachmen...ine=1455798677

Getting closer.

Ass mustaches don't count as wings.

This is my solution to sealing the space between the intake and the heat shield. A piece of 1/8" urethane. I don't think it will melt. Probably not. Maybe.

https://www.miataturbo.net/attachmen...ine=1455930466

And one last engine pic.

https://www.miataturbo.net/attachmen...ine=1455930466

I tried to drive the damn thing for the first time on 14 months. Brake master cylinder pooped all over the floor. I'm getting used to this sort of thing.

Urethane is a thermoset material. It will not melt.

Are you thinking of silicone? I melted the holes for the rivets in this urethane, and have messed around withe friction welding urethane at work. Either way, I think it's probably fine.

Traditional Urethanes, or actually Polyurethanes are themosets. TPU's are blends of Urethanes in a matrix of thermoplastics that have properties of both. Not sure what you have. Many TPU's are automotive grade materials. There may be other classes, but I'm not aware.

And you you are certainly correct that time will tell.

Glad you are getting so close.

Finished my Splitter quick release rear mounts. I definitely stole this idea from someone, but I can't remember who.


https://www.miataturbo.net/attachmen...ine=1456193461


https://www.miataturbo.net/attachmen...ine=1456193461

I has a sad. It was scheduled to be a monumental day. Mounted the wheels and tires yesterday, cleaned out the area behind the miata so I could get it out to the street for the first time in 14 months. Woke up this morning pumped! Today is the DAY! It's going to actually drive again!

Nope. Fuck you Ryan. Fuck you and your moneypit.

Loses crank sync at 2,500rpm. Hasn't done this during last month that's it's been running on jack stands. Checked all grounds, crank sensor gap, and moved the pot dials in the MS, in .5 turn increments. No difference. I'm lost. Again. Don't know what to do.

Any ideas?

FACEPALM ! moved the sensor a bit closer to the wheel, like almost touching. Problem solved. all sync is good.

Business card is perfect for spacing it out. Spec is .01-.02" i believe?

yup or razor blade

I use my AAA card to set the space between the sensor and the wheel.

I ended up using my scrotum.

I drove the car today. Pretty solid first run around the block.15 times. Then to VatoZone to get a gas cap. Pretty amazing, the amount of torque it makes. If feels like it really only needs 4th gear, for everything. Good thing, because this six speed bites nuts compared to the butter 5.

It's far from done, lots more tune time to get it running good. Lots more little bits and pieces to make still.

Thanks to all who have helped me get this far. I hit some pretty low points during this 15 month journey, and a few of you convinced me to just step back for a bit. Gather my zhit back together. I managed to garble up my own thread with bitching, moaning, and whining. When I go back and read it now, its pretty embarrassing. Anyway, I think I am on the upward tend now.

Thanks guys,

Ryan

GREAT NEWS!!

grats sir. have a cat

Ps, when over boost protection sets in, it DOES scare the crap out of you the first couple times.

Yeap! I had it kick in at 380kPa, thought I lost a motor.

yes, yes it does.

So it was goin really well..... Now its not.

problems.

1. Noticed tps wasnt reading 100 at full throttle, so I re-calibrated it. now it idles at like 2k and anything I do, makes it just instantly die.

2. was making 12 lbs of boost last night, smooth and working well. today it make 8 and the engine studders really bad when it gets to that 8 psi.


I cant see anything in the log that tells me anything about the 8psi studder, but im a noob boner at reading a log anyway. Super tired from the day, so Im probably not thinking straight.

What do you guys think?

No log, no help

1. Your TPS signal probably never goes below the idle tps cutoff. This keeps you from going into idle if your TPS is above whatever value you set it to. Make sure your TPS value at no throttle is around 0.

2. Log

when I tried to post a log, It said I dont have a security token? what?


working on that now...

Refresh and try again

nope. just says upload failed. i have absolutly uploded a log before.Im tired. try agin tomorrow . Can a log file be too large?

4.77 megabytes

Yes, I read that in the drop down.

So why does it just tell me "request sent to miataturbo.net" then fail? Its a 7 kb file. isnt that considerably smaller than 4.77mb ?


fail edit...It is a 7,000kb file. way to big.

If you rename a .MSL to .CSV you can open them in excel or something similar like openoffice and edit off data you don't need.

You'll have to have windows set to "show file extensions of known file types" to be able to rename .msl to .csv, you can google that string there for directions on how to change that.

Aidan, you got it. Idles again. Tomorrow we try this boost stuff again.

:party:

What do I win?

Attachment 166389

Why wont my closed loop settings give any affect to my idle. none.

Only the idle valve, and that hardly does anything. Idle test says I need 33 and 43, idles awesome in test. Close idle test, go to closed loop settings....idles 250 rpm higher than the test, but only for 20 seconds, then it dies. I could enter an infinite amount of numbers into any of the closed loop settings. no change whatsoever. yes, it is on closed loop. Yes it idles in open loop pretty well.

1. Throttle stop plate is closed + 1/8th of a turn
2. Air screw is open 3/4 of a turn
3. Idle valve test says low likes 33 (850rpm) and hi likes 43 (1450rpm)
4. Open loop idle steady at 14.7 and 1000 rpm
5. crank sensor is super close .010

Enter Closed loop idle

1. Idles at 1100 rpm.
2. Idle valve does not affect rpm
3. PID gains have zero effect
4. While steady idle at 1100, engine dies abruptly in about five or ten seconds.

Attachment 166394

Add this too. What the hell

I hate pid closed loop idle, I use the simple mode. If you are idling high then stall I assume the PID is too agressive and dumps all the idle DC instead of tapering it smoothly.

And after looking at the logs, that's what's happening.

Well I think I may have roached this engine in less than 100 miles. For whatever reason, auto tune decided to let the afr go to high 13's at 14 psi. Durring an uphill. This was after solid 12 afr for the previous couple runs. Fingers crossed on this one...

No, I did not have the afr safety set. I totally forgot to set it.

No sparkles on the plugs.

No obvious detonation to the piston crown, but I've seen recently, damage to the ring lands first.

Dipstick was pushed out, and blowing coolant from the overflow.

Shit compression IMO (140 ) across the board. This is a 8.6:1 build, so not sure what it should be.

More to come of this. I'm sure.

I'd say you're fine with 140 on all. Test with wet too :bigtu:

How long was the run with higher AFR? Do you has log?

That sucks. I don't use autotune for this reason, it just does not work correctly sometime. I've had it do the SAME thing on my car, AFRs above target, and Autotune pulling fuel despite the fact it should be adding fuel.

Blown dipstick for me has always been a cracked piston. Blowing out coolant has been a headgasket failure for me.

I'd say your best case scenario is a blown head gasket only- pressurizing both the cooling system and crankcase causing both symptoms at the same time from a single (and cheaply fixable) failure. Mixed water in oil/ oil in water would confirm. Oil on one of the plugs/pistons would suggest a cracked piston.

I'd do a leakdown test next.

It was probably two or three seconds, that I noticed.

I think I have a log. It was a big one, so I'll cut and snip, to show.

Went back out with afr safety on. Hit all the time, so shit was definitely bad. Came back home, dipstick still in. No oil spray, so that's a positive.

I might have gotten REALLY lucky this time.

I already know that I'm a paranoid wierdo. This just adds to it.

https://www.miataturbo.net/attachmen...ine=1459539937

If I go 100% throttle, the engine goes into what feels like a fuel or spark cut, right at about 8 psi. if I stay at anything below 98% it drives fine and makes full boost (10.9). What could be causing this?

I see that the Accell enrich is going nuts. at what RPM should It be disabled?

No has help?

It has been 3 hours on a payday Friday afternoon. We are all busy cashing our pay checks and getting singles to hit up the strip clubs.

Sorry, I'm antsy. Trying to run the local autocross tomorrow a.m.

It runs great....except for not being able to use power level 100.

email me the tune and log and I'll take a look at it.

Major props for Pat! Found my problem in one minute, proving again my tuning deficiencies.

Launch control was f ing with me. Turned it off and all is well.

Thanks man!

Quick update:
ive only driven the car a total of 25 miles in 17 months, and most of that was data log short runs. Well..
I got out to the local autocross this weekend. Car ran great. Suspension still needs some final adjustments, and a bigger sway bar. The bigger more powerful brakes stop way better than anything I am use to driving with, so there is that learning curve. 11 psi and I could turn 3rd i could turn the tires into smoke down the long sweeper if I wasn't careful, and this is on legit 15 x9 uls and 225 ventus v2's.
All said and done I eeked out 1st place in our microscopic SSM class (3 entries, all turbo cars), and 15 overall (I think) of 110 entries. We have a hanfull of fast corvettes, s2k's and subarus.

I call it another win for MiataTurbo.NET

Need help. was running great for the week. So turn boost up. didn't know, and still don't know why when you take a tune from TS to Megaviewer, It doesnt recognize that I changed the x and Y values. whatever.

more boost , backfire (I think) and now it idles at 2k. no manifold leaks, BOV is closed, map reads what I believe to be correct. any Ideas? in the pic you can see the boost spike, then rpms fall, then idle at 2k.

went back to a tune from days ago, when it ran great, still idles at 2k.

https://www.miataturbo.net/attachmen...ine=1460081754

If I'm reading that right, your AFRs are in the 8's at full boost? If so, yeah it's gonna misfire running that rich.

Post or email datalog and tune of it idling high and I'll take a look.

It was the very first run at more than 10 psi, so I had no real idea what to fuel, so I went with what I thought was safe. I don't know what the fuck I'm doing. Obviously.

FWIW what I do is, say fuel is good at 8 PSI it's tuned and works great. And say the next line up in my VE table is say, 11 PSI. I'll copy/paste the 8 PSI row to the 11 PSI row, and add 2 to it. Then turn up boost and see how it runs at 11, and move that entire row up/down as needed till AFRs are right.

I make the steps all the same, so what happens is the change between rows is similar.

Makes sense.