E 85 GT4094r 26/25 psi
 

we were able to spend a day on the rollers and it proved to be fruitful. i now have a Flex Fuel Sensor (FFS) in my system w a bunch of the usual fuel upgrades... 8800 CC of injector, the Walbro E85 pump being run by my beloved Kenne Bell Boost A Pump, dash 8 fuel lines etc.

all seems to be well. we ran on straight E85 yesterday and i was blown away by how much midrange power the motor made.... 402 at 5000! 448 at 5500! the dyno lost RPM signal where the sheet ends but we ran most pulls to around 8800.

i was running my GT4094r at around 25- 26 psi. we made 575 which is about right for that boost. the 4094 makes max air at 29 psi which after we shuffle a few things we will visit.

http://img842.imageshack.us/img842/5241/nqh3.jpg

http://img19.imageshack.us/img19/7680/svjs.jpg

i am entered in the Texas Mile in late Oct.

MUCH THANKS to LUKE STUBBS at BEYOND REDLINE FOR HIS TRULY AMAZING TUNING ABILITIES

LOVE THE V88! still scratching the surface and having a ball.

howard

thats awesome howard. what are the spec on the motor?

Congrats! Looking forward to more boost!

It's about time Howard! Congrats

Say goodbye to 93 with meth injection.

Congrats!! from another 4094R user running big boost. Happy that you got this far with this turbo.

thanks for the kind comments. the primary motivating factor to make the switch to E85 was i had serious doubts about the motor being able to do the Texas Mile on gas and AI. i think it will be pretty brutal.

i figure around 30 seconds and probably near 20 of them in fifth gear. if all goes well (fingers crossed) it will be 8400 RPM thru the lights in fifth.

so we made the switch to E85. i have always loved alcohol and now it is the main dish.

"specs on the motor?"

the motor is just my normal build which features a really well developed/big primary port along w the usual really big secondary. (no bridgeport). i do think the exhaust port is a key to the midrange along w my manifold. the exhaust port on a rotary is HUGE and it is Peripheral and it is open a LONG TIME. it doesn't need to be bigger.... but. i think it does need to be open sooner. so i direct the last remaining ooomph away from the rear wheels and to the turbo. it does add mid range by spooling the turbo harder. i do not touch the exhaust close as it pollutes the intake nor do i change the width.

beyond that i currently run Goopy 2 mm oversize custom fit apex seals and am impressed so far. earlier this year my AI system fuel injectors became plugged due to me adding (25%) water to the mix and i made some runs off the spring (14 psi) and was getting knock.

the seals survived and seem to be fine. i am impressed and would love to take the motor down and check the crown surface on the seals. maybe this winter just for fun.

the only other thing that is not in my usual build is the Titanium thru bolts. (Rotary Works street version)

ignition is 4 IGN-1A coils at 4.5 max dwell and Autolite AR3932X plugs.

3 inch exhaust including DP.

as to the GT4094r, it is an under-loved turbo for our two rotors. it is very close to the size of a GT35 yet puts out 80 pounds per minute, making the output within 7% of the much larger GT4294r. the smaller package allows it to be along side my motor, not in front of... which allows me to have straight SHORT runners on my manifold. along w a large airfilter etc.

i look forward to trying the BW EFR 9180 as it appears to trump the 4094 in all areas.

HC

Congrats on the great results Howard. Do you think the 3" exhaust is holding back any power? Ive noticed alot of guys going to 3.5" and larger on much more conservative setups than a 4094 @26psi. Good luck at the mile, looking forward to your results out there.

Does the Walbro outflow an 044? I'm amazed one pump provides the fuel you need. What was injector duty? I have 850/2000s and my tuner told me I'll need more than the Power FC to control 2000 primaries.

How does a 4094r compare to the s363/2 (idk what it actually was) that you were previously looking at or is this simply for the Mile?

Looks great and good luck at the mile!

Good job on the number Howard. The only question i have is what size hot side did you use to make such a beautiful powerband

"Do you think the 3" exhaust is holding back any power?"

i am very interested in the answer to this question. i expect the 4094 will make 600 at 29 psi. if it doesn't the exhaust will be the culprit. i really like the sound level of the car ATM and the car is dual purpose so i am not changing it to trade for more power.

i may remove the rear catback for the Mile and substitute a straight pipe. this would leave me w my center muffler which is a Borla 3 inch SS straight thru. mainly to reduce weight...


"Does the Walbro outflow an 044? I'm amazed one pump provides the fuel you need."

Walbro introduced a new "E85" pump this year PN 9000267. it is your single pump answer for E85 and 600 rotary hp. for details see my sticky thread in the Single Turbo Section, "Fuel Pumps 2014."

i do combine it w a Kenne Bell Boost A Pump.


"How does a 4094r compare to the s363/2 (idk what it actually was) that you were previously looking at or is this simply for the Mile?"

the 4094 can deliver 80 pounds per minute or a legitimate 600 rotary hp. i consider it to be in the "large" class of turbos for our motors with a 8.175 square inch compressor.

the BW S363 (PN 177283) is a mid size ( 7 sq inch comp) that can deliver 75 pounds or 550. it is my favorite midsize as it sports a 6.31 sized turbine wheel and has a smaller trim for more midrange on the compressor side.

i switched turbos for more power for the Mile.

the hot side of my GT4094r is 1.06 and the turbine is 6.93 sq inches. the turbo has little to do w the torque curve. primary factors influencing the curve are the ports and manifold design. the recent runs were the first "clean" runs w my overall design and when i first saw the curve i said to Luke that it looks like a V8.

the rotary needs a wider torque curve and i hope it will work for me in Texas.

howard

nice work!

what kind of wastegate setup are you running, howard?

Tial 60 mm

here's a Beyond Redline video of what is just a shakedown run Oct 4 to check on a couple of things. straight E85.

https://www.facebook.com/photo.php?v...type=2&theater

we expect to do a final dyno for the Texas Mile this sunday Oct 13. i will be adding AI to the E85 to cool IATs a touch.... nothing big, just 600 CC of a non flammable combo of water meth at the elbow.

sunday will feature 29 psi boost and fifth gear to 200 mph on the dyno... we did 165 on the dyno on Oct 3 in 4th.

Nice built and setup Howard and your atention to detail...

I Pm you some question about your ECU... I really liking this ECU..
Please if you have time PM me back..

Good luck with the mile event tomorrow...

"...fifth gear to 200 mph on the dyno... we did 165 on the dyno on Oct 3 in 4th."

Careful: a chassis dyno will not load the tires the same way as the track. For one thing, the track is flat while the rollers are round, this will deform the tires differently. Additionally, the tie-down straps tend to load tires differently than the car's suspension & aero package.

You don't want to experience this:

That's pretty scary!

"final dyno for the Texas Mile this sunday Oct 13."

delayed til monday Oct 14.

205.11 MPH in fifth on the dyno today.

http://imageshack.us/a/img822/9623/jq98.jpg

what's w this Section... you can't post pictures and it is a dyno section?

my Sumitomo HTR Z3 tires behaved.

howard

interesting egt curve

e85 is the best fuel available imo