MAZUR's E30 S50 Turbo - REV B

[dranttna]

thats a pretty good drop in temps, it doesnt make sence that it didnt melt befor though.

[mazur]

I already had an infrared temp sensor, so I took it with me on my trip to school to do some testing. Both temps were taken after similar driving styles.

With blanket, compressor housing temp was 135*F. with about 105*F ambient.

Without a blanket it shot to 210*F with <100*F ambient.

So I guess blanket wins. Not sure if I overlooked anything skewing the results.

[dranttna]

yeah i heard about standing out there with a flag or whatever it was, ill probly do that during nonsummer events.

[mazur]

I’m not in nasa yet but have been looking at joining, I’ve just heard its a huge hassle and expensive and not much track time for a while, but im going to make the plunge soon. plus getting the car ready hasn't been easy but i think it can handle it now.

Hassle? Compared to what?

Expensive is also relative (Is PASA cheaper or something) If expense is a big concern, as it is with me, working as a corner becomes a good alternative. One free track day per corner working day.

[dranttna]

I’m not in nasa yet but have been looking at joining, I’ve just heard its a huge hassle and expensive and not much track time for a while, but im going to make the plunge soon. plus getting the car ready hasn't been easy but i think it can handle it now.

Compressor concern: I think harbor freight sells a infrared thermometer/gun for about $15, id grab one and do a few runs with and without the blanket. I’d be interested to see the results since my filter is slightly warped looking already and I have been looking to get a blanket.

[mazur]

looks nice, those pneumatic fitting are so much cleaner than silicon hose and hose clamp. i replaced all my vacuum lines with them and they are way easier to work around, and holding up better. keep up the good work, maybe our cars can meet on the track soon.

True dat.

So are you with NASA? Have you been doing it for a while? Have I seen you out there before? I'm assuming you track an E30? What group are you in?

Sorry for all the questions, but I'm always curious about those things.

---------------------------------

Update:

So I've finally been doing some real boosting. I have my 50mm Synapse WG plumbed for lowest boost setting along with having the stiffer main spring and smaller valve seat installed for quicker spool. So all that equates to me getting a whopping 4.2 psi, lol. Good enough for break-in period ;)

This places my exhaust back-pressure at about 8.7psi, which isn't the worst thing in the world, but my last setup had less (about 1:1). According to Synapse's manual, putting the larger valve seat back in should help a little. My car already spools very quickly (and that's with the pre-load spring at it's lowest setting) so I'm going to try the larger seat.

One thing to note is that I am making MUCH more exhaust gas by volume with E85 and I still have that damn cat in my exhaust, so I feel safe saying that's my main source of increased back pressure. Need to make that damn test pipe already.



So far so good though. No signs of any issues and spark plugs look great, but they make it apparent that my timing is too retarded (15 deg @ 4psi). It's just a base spark map, so oh well. I'm going to take care of that on the dyno.

Idle is awesome and rock solid. Even better than stock. Like better than in my E36 M3 stock! None of that hunting bullshit. It's amazing how one little thing I learned on Supraforums about tuning idle on the AEM has done so much. Also, my drivability is also leaps and bounds better than before. Feels very stock.




There is one issue, though. My compressor housing got so damn hot today that my intake filter has began to melt! :o

I could place my entire hand on my turbo blanket, but just barely touching the compressor housing was like touching a hot stove, ouch!

Has anyone ever had this happen? I know it's hot in AZ, but damn! Can the blanket be to blame?

[dranttna]

looks nice, those pneumatic fitting are so much cleaner than silicon hose and hose clamp. i replaced all my vacuum lines with them and they are way easier to work around, and holding up better. keep up the good work, maybe our cars can meet on the track soon.

[mazur]

Alright, finally got some pics. The wrapping is that new, uber cool, lava titanium/unobtainium alloy stuff. ;) The blanket was bought on Ebay and so far I'm happy with it, although I have nothing to compare it to.



Also, I finally utilized that black, bulkhead trimming that really cleans up the engine bay from the wiring loom eye sore. Just needs a couple more simple mods to fit up better. Using a single heavy gage wire (scrap part from my E36) for the ground distribution also helped isolate wires away from the strut tower to clean things up.



So I used that wrinkle paint for the first time. The IC tube you see in the pic was my first, so it looks shitty, but the other one plus my coolant reservoir and oil cap look titties. All it takes is just another coat on top to fix it up. :)



Some may notice my brake reservoir tank placement looks like a major after-thought. Well, that's because it was. I got rid of the ABS pump in plans of having my dual MC setup done before I was finished. Well, you can see that didn't pan out and I had already shaven the bracket off to where it used to be mounted. Here's a teaser of what's to come though. (Tilton MC's and bias bar) For those who don't know where this will go, it basically replaces the stock brake booster and master cylinder setup.



A quick disconnect tee was installed for the WG signal lines. A LOT better than damn barb fittings.






So anyways, she's running well, but need to begin dialing in fuel for boost. I should have time this Sunday for that as long as I wake up early because it's been really hot out lately. My plan is to get it to a dyno once I get the fuel map down as best as I can so I can tune my spark map. Hopefully I get to that stage sooner than later.

Another note: For break-in, I secured two hard drive magnets to the sides of my oil filter reservoir in hopes of catching metal particles. For my first oil change I found a decent amount of deposits stuck to the wall. I'm going to keep them on to see if if the amount of residue that was collected repeats itself for the next oil change.

[mazur]

the project looks great man.

im sure your aem has unused sensor inputs correct? why dont you put a switch on one, then program it as a "limp-home" map that you design for gasoline use. i havent done alot of work with aem but i would think you can put a fault value for the input that would make it switch maps.

Hmm...that may be possible with the NOS fuel map since it can be switched and I believe can have negative valued cells. I'll have to research how this map actually works. Thanks for the idea.

[dranttna]

the project looks great man.

im sure your aem has unused sensor inputs correct? why dont you put a switch on one, then program it as a "limp-home" map that you design for gasoline use. i havent done alot of work with aem but i would think you can put a fault value for the input that would make it switch maps.

[mazur]

ITS ALIVE!...finally. :rolleyes :)

Started right up nicely, no goofy sounds, no leaks. Just a bunch of smoke from the mani as usual from oil hands and wrap.

Only gave it about 4 psi part throttling it for break-in (with some brake boosting as well), mostly because I didn't trust my fueling enough for WOT. My Synapse wastegate is supposed to limit me to about 5psi at its current setting and I heard it creeping open a couple times, so I'm thinking it may actually hold that number.

Also, the smell of E85 is very pleasant when burned. Sort of a sweet alcohol smell :D



Anyways, I'll to post some pics tommorrow of the final product.

[Tchao]

Safe map and fuel trim is different dude.
Im not here to argue man...just trying to help you out, if you don't want it just say so.

You cannot allow the ems enough authority to override your map enough to compensate for the use of gasoline on an e85 tune.

[mazur]

And for you to leave it in the ECU like that is a joke.

O2 feedback is off for E85 buddy, which is 99% of the time.


And I'm not sure what strategy is being used by the stock ECU, but mine increased fuel by 20% when I took off the stock 02 sensor when before I was turbo. Just a point of interest.

[Tchao]

Jesus Christ Richard just trying to help, no need to get all defensive.

And yes I know what I'm talking about. You do not ever give ego readings the amount of authority needed to correct the differences between e85 and gas. Period.

And for you to leave it in the ECU like that is a joke. Go post up on BFc that you will give the EMS 30% correction based solely off ego feedback.

No ecu, including stock will change a large percentage off it's programed map.

What I said is 100% true, not picking anything, without a computer on hand you must preset your ems like that day everyday....

[mazur]

Here you go again with this stupid Autotune, you need a solid map PERIOD. Nothing can help if your maps are off.

There is no way in hell you are giving the AEM authority to modify that HUGE of a change in any given time. That is just foolish.

E85 and Gasoline are two different animals, you need to run two very different maps man.

You need a computer on hand if AEM cannot switch maps on its own.

So drama queen found his way to this thread as well?


First off, you must be only picking and choosing the phrases you want to argue without reading the whole post.

I DO NOT want to run on gasoline, BUT, I'm sure there will come a time when I'm stuck without fuel, no E85 in site, and my computer is at home. Hmm, why not just let my wideband do all the work so I can at least get home? You actually think I would boost under such a circumstance?

I don't know if you know, but the stock ECU in your car is running a fuel map trimmed by what you call "AUTOTUNE" :roll:

Can't you at least use proper terminology?