MAZUR's E30 S50 Turbo - REV B

[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.

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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]

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]

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]

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

[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]

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

[mazur]

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

It was an especially hot day that day and I was doing some boosting, so together that may have been too much for my filter. I'll worry about it if it happens again. So far so good though.

[mazur]

Small update:

Well, turbo blankets work REALLY well. Just after simple cruising, you can see the turbine housing glowing quite brightly at night and takes a while to fade. Without the blanket, no glowing at all.

About the air filter, looks like the summer heat is just not letting the compressor housing dissipate heat quickly enough, because even without the blanket, it still began melting the rubber on my new K&N. I'm just going to isolate the filter from the compressor.




My EGT's -
Idle: avg 700*F
Cruising @ 80mph: avg 1050*F
I don't have solid number on WOT, but it currently seems like it may be on the cool side.



Boost pressure is currently set at 8psi @ 15 deg and I cannot believe how strong it feels. Feels quicker than a R35 GTR for sure. It really excites me for what's still to come. :D



Also began tuning my "VANOS map", as I've been running it without VANOS until this time. Activating VANOS has rendered needing roughly 8%+ increased fueling across the map.

Interesting note. I was doing some tuning with my friend at the wheel and decided to upload the VANOS map. He instantly asked me what I changed. I said, "nothing, why?". He says, "I don't know, it's spooling a lot faster all of a sudden". "Oh yah, that's VANOS :)"

So coupled with the extra exhaust gases of E85 my GT35 spools like a much smaller frame unit.



Next steps: boost control, dyno, video, wheels, brakes, trackday, video. *Sigh*, still have plenty to do :)

[mazur]

A little OT, but I was in one of the labs at school using the CMM to inspect a part today and couldn't help but recognize what head was pictured on one of the manuals :D










Anyways, update is that car is running great. Still boosting at 8.5 psi. Once I get a little extra dough I'm going to take her on a dyno. But before that I still need to install my boost control solenoid and get it to work with the Synapse WG.

[giantkeeper]

Richard, how is the wrinkle paint holding up?

Car looks tits as usual, nice work man!

[mazur]

FINALLY have some results to share on my build. Damn, has it already been a year? :o

Anyways, for much of the past year I have been really busy with school and work and sort of ignored any issues I had with the car. My only real issues were wiring gremlins. The car would run fine for a while and then suddenly I would have weird missfires or spark blowout with barely any boost. Then it would magically drive well again, so because of my busy schedule and this car being my daily driver, I just dealt with it.

I finally traced the problem to the DME to EMS adapter that I made, on the DME connector side. Even with soldering the wires to the pins and using cocking to reduce the chance of vibrational damage, it still failed. I just threw that shit away, cut off the DME connector on the main harness and wired it directly to the Honda connectors. It's been perfect ever since.

Last weekend I went to a track event at INDE Motorsport Ranch. This would be my first time driving this car boosted on the track. Though I was nervous the whole time on track that something may go wrong, it didn't. Everything worked flawlessly. All I had to do was keep feeding it corn. :D I only ran it at 8 psi though because I'm a waffleswaffleswaffleswaffleswaffles and was afraid I may blow it up.

Here's a very short clip of it on track - http://www.youtube.com/watch?v=V21sQ...eature=related




Today I finally took it to a local shop to clean up my tune and begin making some serious power. The end result - 453rwhp/413rwtq corrected...with a cat ;)

Here's the video of the dyno pull (Don't mind the vacuum tubes. Did some last minute boost control plumbing.) - http://www.youtube.com/watch?v=fsNy_...layer_embedded

That pull was done at 15psi and just over 10 degrees was added to my "base" map, lol. Every time we added timing it just kept making more power. He wanted to keep the tune fairly conservative so we didn't push timing any further.

One thing that my buddy Tchao and I found interesting is how much torque fell off at the top end when we deactivated VANOS (something crazy like 30tq IIRC).. We initially thought gains would be made by retarding the cam timing up top, but the very opposite was true. VANOS therefore is left active anytime the vehicle is not idling.


We had to stop at 15psi due to my fuel pump not being able to keep up with the fuel demands. I did recently install an Aeromotive 340lph pump which I had hoped would alleviate this problem, but I guess I was wrong. My first plan of attack is to check to see if I'm getting a voltage drop in my stock pump wiring. Chances are this is my problem and I feel dumb for not re-wiring the fuel pump as is recommended by probably all aftermarket pump manufacturers :embarrasm If that doesn't help, I may just do a dual parallel setup.

Once fuel delivery is all sorted out I will probably be going back to squeeze some more out of her. 20psi? :devillook




Anyways, this car just WRIPS! On my drive home tonight I just couldn't believe how strong this thing pulls. If I had traction in second gear I would definitely cream my pants.

I'm going to play with the vehicle speed dependent boost control to help out with the traction issue.




The pull was done mainly at 1 bar but we increased the top end to 15 psi to flatten out the torque curve a little. Also, I'm not sure if my turbo spool is up to par or not. It is a journal bearing turbo, so maybe my results are typical. Anyone else have any experience?

[Cronopoulos]

Nice numbers and very sick build...

[giantkeeper]

Nice build!

[dude8383]

Holy crap that is a rot of powaaaa

[328ijunkie]

hawt