Jim Green's 90q 20vt - 636whp 07k

SEStone · Post by **SEStone** » Thu May 18, 2006 11:52 am

TheArchitect wrote:
Wizard-of-OD wrote:
audifreakjim wrote:Wiz, I'm running the 75# injectors Javad sells, at 65 psi base rail pressure. This is barely big enough, but it idles and runs great, I'm very happy with them.
Not bad,Joel (purple-pill) was running 8 injectors on his 20V when he was doing the methanol.I could only imagine how much E85 is consumed with respect to regular unleaded gasoline.
Whatever the case my hat goes off to you,I always thought the E85 would slowly eat away @ a plastic fuel tank though :?

All things the same, E85 should require 52% more fuel as compared to Gasoline.

EEK

Sam

cuatrokoop · Post by **cuatrokoop** » Thu May 18, 2006 12:44 pm

TheArchitect wrote:All things the same, E85 should require 52% more fuel as compared to Gasoline.

Why does that sound high??? :?

Longitudinal · Post by **Longitudinal** » Thu May 18, 2006 2:33 pm

cuatrokoop wrote:
TheArchitect wrote:All things the same, E85 should require 52% more fuel as compared to Gasoline.
Why does that sound high??? :?

I thought so, too. The 15% gasamaline should help out. Fifty percent more would be like straight eth, wouldn't it?

Derracuda · Post by **Derracuda** » Thu May 18, 2006 2:49 pm

the E85 can be run leaner in standard running conditions and be fine IIRC. so really only tune it to run richer under boost and one should be able to get by not too badly

audifreakjim · Post by **audifreakjim** » Thu May 18, 2006 7:38 pm

If need to put regular gas back in this thing and get it tuned in with the new injectors. I'll let everyone know what I find. Derek is right, it seems to run fine at 15:1, but on boost 12:1 works great, which makes for some pretty big gains in the upper cells on the basic map.

Longitudinal · Post by **Longitudinal** » Fri May 19, 2006 6:31 am

Hold on. I thought you had to tune by lambda only with eth because AFR is not believable anymore. So, what does 12:1 on eth actually mean, Jim?

JShadzi · Post by **JShadzi** » Fri May 19, 2006 6:35 am

Jonathan wrote:Hold on. I thought you had to tune by lambda only with eth because AFR is not believable anymore. So, what does 12:1 on eth actually mean, Jim?

Stoich for E85 is 9.765:1 a/f, so if your meter is calibrated to a stoch of 14.7:1, you'll certainly be off as Lambda is calcuated as a/f ratio divided by stoich.

Just yesterday we added to the 034EFI tuning software an option to change the stoich for a bunch of different fuels, so this will be built into the software on this new release 8)

Longitudinal · Post by **Longitudinal** » Fri May 19, 2006 7:08 am

JShadzi wrote:Stoich for E85 is 9.765:1 a/f, so if your meter is calibrated to a stoch of 14.7:1, you'll certainly be off as Lambda is calcuated as a/f ratio divided by stoich.

Just yesterday we added to the 034EFI tuning software an option to change the stoich for a bunch of different fuels, so this will be built into the software on this new release 8)

Finally! "Lambda" has a meaning for me. AFR/stoich. So, an O2 sensor, sensing free oxygen in the exhaust gas, is always able to determine lambda accurately. It's the meter that would be confused because it interprets the voltage from the sensor based on 14.7:1 stoich. I am understanding. This is why Jorgen said something like "you'd better just get used to lambda numbers."

Keep improving that 034, Javad. By the time I am ready to plop dollars on the glass, it'll be perfect. :-) It's looking like E85 is for me. I have been going round and round on fuel choice, which influences my CR decision.

Sorry for the mini-hijack, Jim. The moment of lambda clarity was worth any repercussions or beat-downs I might now receive.

audifreakjim · Post by **audifreakjim** » Fri May 19, 2006 7:17 am

I'm spitting out these numbers assuming lambda 1 = 14.7 AFR on the gasoline scale. I should be using lambda, which is showing .8-.82 at WOT in the logs.

audifreakjim · Post by **audifreakjim** » Wed May 31, 2006 5:06 am

:Update:

After driving the pink rocket camping all weekend, I have a new appreciation for this car, it's fiddle sticking fast! :woowoo:

JShadzi · Post by **JShadzi** » Wed May 31, 2006 6:02 am

audifreakjim wrote::Update:

After driving the pink rocket camping all weekend, I have a new appreciation for this car, it's fiddle sticking fast! :woowoo:

I hear ya, I always tell people, "Want to make your car faster? Drive a slower one for a few days"

Post by **Marc** » Wed May 31, 2006 6:06 am

JShadzi wrote:
audifreakjim wrote::Update:

After driving the pink rocket camping all weekend, I have a new appreciation for this car, it's fiddle sticking fast! :woowoo:
I hear ya, I always tell people, "Want to make your car faster? Drive a slower one for a few days"

Says the man with a 700hp car... :-P

yodasfro · Post by **yodasfro** » Mon Jun 26, 2006 9:08 am

Jim If I were to use an MC bottom w/ my 7A head would the stock mc pistons work or no?

WAUG0806 · Post by **WAUG0806** » Mon Jun 26, 2006 9:32 am

yodasfro wrote:Jim If I were to use an MC bottom w/ my 7A head would the stock mc pistons work or no?

Austin,

I now have unburnt fuel vapors coming out of my breather :frustrated:

we'll be doing compression/leakdown, removing the head, etc. so we will know "what gives" on that combo... but remember that I had the boost up close to 20 and did lots of hard driving over the past year...

hell of it is, it still runs pretty good but something is wrong for sure... stand by ... should have the answer in a few days, hope to have it all better in time for Old School Quattros end of July...

I have a spare 20V head in reserve and am hoping it's a burned valve!

yodasfro · Post by **yodasfro** » Mon Jun 26, 2006 9:40 am

Thanks Doug!!!

SilverCQ · Post by **SilverCQ** » Mon Jun 26, 2006 11:52 am

newt wrote:
yodasfro wrote:Jim If I were to use an MC bottom w/ my 7A head would the stock mc pistons work or no?
if you want a 6:1 compression ratio.. they'll work...

awesome, should beable to run monster boost on that eh? :bump:

SilverCQ · Post by **SilverCQ** » Mon Jun 26, 2006 12:02 pm

newt wrote:
SilverCQ wrote:
newt wrote:if you want a 6:1 compression ratio.. they'll work...
awesome, should beable to run monster boost on that eh? :bump:
Define monster boost, we're running 40psi on 8.5:1 in the 80....

You'll loose any sort of decent street driving on a 6:1 motor, it'll be super lame off-boost and will take longer to get things spooled up.

my bad, i guess the sarcasm didn't come through on that post........

audifreakjim · Post by **audifreakjim** » Mon Jun 26, 2006 12:27 pm

Austin, Doug is running an NG bottom end.

WAUG0806 · Post by **WAUG0806** » Tue Jun 27, 2006 2:51 am

audifreakjim wrote:Austin, Doug is running an NG bottom end.

yup, I was thinking about my day job when I replied to Austin..

yodasfro · Post by **yodasfro** » Tue Jun 27, 2006 3:17 am

audifreakjim wrote:Austin, Doug is running an NG bottom end.

Yeah I know. That doesn't answer my question about mc pistons and 7a?

But see Nate did ok that's all I was looking for. So I'll stick with the NG for now.

SEStone · Post by **SEStone** » Tue Jun 27, 2006 2:12 pm

Jim,

Run any more E85 through the car? Checked condition of the fuel rail and stuff?

Sam

audifreakjim · Post by **audifreakjim** » Tue Jun 27, 2006 2:29 pm

Yep. still on E85. The fuel rail looked fine last time I had it off.

PRA4WX · Post by **PRA4WX** » Sat Jul 01, 2006 6:18 pm

i want to convert BOTH vehicles to run E85. Are 30% bigger injectors sufficient, you think, to handle E85?

olsonjus · Post by **olsonjus** » Sun Jul 02, 2006 10:07 am

There are 39 ethanol distileries being built this year in the US. By 2008 the US will be the largest ethanol manufature in the world. :woowoo: :woowoo:

audifreakjim · Post by **audifreakjim** » Mon Jul 03, 2006 2:06 pm

So I'm in the process of putting in AN fuel lines and it starts to rain, hard. I think it's about freaken time and keep working in my 1/2 underground parking garage. About 30 min into this I look over and a small wall of water is moving my way. WTF! I've got shit everywhere on the ground, fuel pumps, filters, tools, the car's up on jacks, yikes! Needless to say I set a record for cleanup, it was kinda like Hank running to get the fire extingusher to put the fire out under his hood.

So the car's sitting in about 4" of water, hopefully I can finish this tomorrow. :curses: