sean's cheap thrills, 90 1.6 with subaru td04 - Page 29 - Miata Turbo Forum - Boost cars, acquire cats.

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Old 08-09-2015, 01:57 PM   #561
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Well used. I'd rather pay you for those than send you my old ones I bet. I have like 7 track days on them and a year of use. I bet they have one more track season left with how I drive.
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Old 08-09-2015, 03:41 PM   #562
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aidan, can i has afr table?

ive been looking through your thread and cant find it

I get white smoke with a little bit of revs.... problem?
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Old 08-09-2015, 03:49 PM   #563
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Yes.I'm house shopping right now though.
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Old 08-09-2015, 04:14 PM   #564
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Quote:
Originally Posted by aidandj View Post
Yes.I'm house shopping right now though.
Cool thanx.

Oil return line leaks at the upper fitting from the threads, which probably means I need to remake the line It is the only leak though, so thats cool.



thinking of you aidan



shitty video where you mostly just hear the HLAs struggling to pump up.
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Old 08-09-2015, 05:35 PM   #565
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Ignition table would be cool too aidan.

Here is the afr table I just built mostly copied from thirdgen.



I looked closer at the oil drain and i was actually leaking from the flare, I put a wrench on it and was able to get another half turn out of it. my bad. hopefully that takes care of that.

The car does smoke pretty bad though. I was hoping it would clear up, but it hasnt. There is just a little white smoke at idle, and a nice plume comes out when you rev it. Im wondering if its the turbo. I am using a 1.5mm restrictor and I did rebuild it, but... it does seem to coincide with oil pressure.
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Old 08-09-2015, 08:42 PM   #566
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<p>Here is my 33mpg AFR table. Everything above 100kpa has been dyno tuned, just fyi, my fuel map doesn't match that above 100kpa. I don't even autotune in boost anymore, just dyno tune. You can run even leaner in cruise. Ben (@diyautotune) has mentioned before that he tunes cruise as lean as it will go without stumbling.</p><p><a href="http://imgur.com/M5ZSNhq" target="_blank"><img alt="" src="http://i.imgur.com/M5ZSNhq.png" /></a></p><p>And spark. Its a combo of some different stuff. It was dyno tuned, but changing spark didn't change power so I don't believe it is much different than whatever basemap I pulled it from.</p><p><a href="http://imgur.com/qz4RdY2" target="_blank"><img alt="" src="http://www.miataturbo.net/attachment.php?attachmentid=146484&amp;dateline=14 39167370" /></a></p><p>Table files are attached. (right click table and import)</p>
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File Type: table afrtableforsean.table (2.4 KB, 75 views)
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Old 08-09-2015, 08:43 PM   #567
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<p>Ew, my AFR table needs some cleaning up top. I'll update it.</p>
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Old 08-09-2015, 09:22 PM   #568
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<p>Lean cruise takes lots of spark advance though.&nbsp; Like &gt;40&deg;.</p>
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Old 08-09-2015, 09:27 PM   #569
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<p>How lean? I'm seeing 15.5ish in cruise. Are you saying I should add more advance? Or I would need more if I went leaner than that.</p><p>Mind posting your maps Ben?</p>
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Old 08-09-2015, 10:06 PM   #570
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This is a track only car, no care about cruise AFRs for fuel mileage. Having said that, my NA tune had me cruising around 16:1, and the NA section of your spark map is almost identical to mine. Thanks for the maps aidan.

Is there any way to rule out the turbo oil supply causing my smoking. For example, can I plug the feed, and just keep the blades from spinning just to do a quick rev test to see if the tail pipe clears up a little. Im trying to determine if this is coolant or oil. Eveything points to oil. Hell it might still be burning residual **** I guess.
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Old 08-09-2015, 10:16 PM   #571
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You will care about cruise when you drive that thing up to Oregon to come to some awesome tracks.
<br />What does it smell like? They are pretty different smells.
<br />What seal did you forget during the turbo rebuild
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Old 08-09-2015, 10:39 PM   #572
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Quote:
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<br />What seal did you forget during the turbo rebuild
this

smells like gas. im running straight water right now, so it wouldnt smell like coolant anyway.
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Old 08-09-2015, 10:44 PM   #573
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I seem to recall from past experience that water vapor basically dissipates as soon as it leaves the tail pipe. Burning oil carries.

It carried to my neighbors yards.

Ill get a video tomorrow.
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Old 08-09-2015, 10:52 PM   #574
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<p>Doubt you would see steam out of the tailpipe. Just burning coolant. Though white means its like pissing oil. Small amounts of oil are usually blue.</p><p>Any hints of oil in your charge pipes?</p>
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Old 08-09-2015, 10:54 PM   #575
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Quote:
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<p>Doubt you would see steam out of the tailpipe. Just burning coolant. Though white means its like pissing oil. Small amounts of oil are usually blue.</p><p>Any hints of oil in your charge pipes?</p>
I only dropped the coupler coming right off the turbo. It was clean.

Im going to go pull a few more right now. If those are clean, maybe ill pull the midpipe tomorrow.

edit-Or hell, maybe even just the o2
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Old 08-10-2015, 03:09 PM   #576
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So I plugged the oil feed, locked the turbine in place with a piece of wood and a vice grip and ran it for a minute. The smoking might have improved marginally. There is nothing in the charge pipes, or in the intake itself, all clean as new.

so I pulled the plugs, theyre covered in oil. Keep in mind this is about 20 minutes run time total on these plugs. 1-4 from left to right, you can see where I just wiped the oil off of 1 and 4. So I think this rules the turbo out, at least as the only cause as it might be contributing.




So my intake valves are leaking is my best guess. They are new. Guess I should go pull the VC? Or should I just go flog it and see what happens?
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Old 08-10-2015, 04:09 PM   #577
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I looked down the spark plug holes, all 4 pistons has a small puddle on it

Stem seals are the only thing that can cause this to my knowledge. Its like theyre not even there. Im confused how new stem seals can all fail so bad like this? Can you really **** up seal install that bad? I handed the seals that came in the felpro kit to my machinists, so its possible a mistake was made. Interestingly the part number on the head gasket kit for the stem seals isnt the same part number that comes up if you buy the seal separately from felpro. Felrpo doesnt even recognize the kit part number.

Any insight before I order seals and a valve spring/keeper tool? Is there a stupid plug or something I forgot to install? I would really like an easy button. This has me upset so im going to go play world of tanks for a few hours.
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Old 08-10-2015, 06:20 PM   #578
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I installed my felpro stem seals myself and wasn't exactly easy on them. They come with a stem straw to guide them over the valve, but I just used a pair of needle nose pliers...

Anyway, I wasn't gentle but I did pre-lube them a bit and made damn sure they were seated with a socket. I don't think I burn oil...

I've got a c-clamp hacked socket mess you are welcome to borrow, if you've got a tilting head on that mill of yours I'd use the quill because that sounds slick!

Although I guess you'd probably like to do it without removing the head...
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Old 08-10-2015, 06:25 PM   #579
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Although I guess you'd probably like to do it without removing the head...
Correct. I can get the tool, and new seals for less than just a head gasket costs, and with less work and time. Thanks for the offer though.

Ive installed many stem seals in my life, theyre usually pretty straight forward. Thats why im so surprised that its leaking, let alone like the titanic.
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Old 08-10-2015, 07:06 PM   #580
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I wonder if maybe they were installed dry and tore or rolled up or something, like you said I don't see a lot of room to mess up the install.

The only other thing I can think of is they didn't get pressed down onto the valve guide thing far enough and the spring bucket trashed the top of em, ripped the oil seal spring out? I hope not, those would be a bitch to find.
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