Car:
(http://i94.photobucket.com/albums/l95/1badimport/punchbuggy028.jpg)
Engine:
(http://www.braunstadt.com/lugtronic/images/Todd4.jpg)
32-33 psi Dyno:
(http://www.vems.hu/files/KevinBlack/Todd592.jpg)
25-27 psi Dyno:
(http://www.vems.hu/files/KevinBlack/Todd526.jpg)
Wire-in VEMS v3 ECU. External 400 KPA MAP Sensor. Bosch 2x2 Ignition Coil.
Thanks Rob and this Forum for the support!
Awesome :o
Thanks, just another day at the office.
Here is a new run on my "home dyno", which has a working RPM pickup and more consistent results.
(http://www.vems.hu/files/KevinBlack/Todd547.JPG)
Update, 1 year later.
This car now runs E85 fuel, still a street car, Bosch 160# injectors, it makes 680 wheel HP and it has gone 10.42@141 mph in the 1/4 mile.
VEMS is working great, I hope to implement some of the new features to make this car faster and still as reliable.
Would you describe more detailed about parts, sizes?
Sure, here are the specs:
* ABA / 16v
* 10:1 compression Wiseco pistons
* Crower connecting rods
* Stock 1.8 head w/ valve springs
* Shrick Camshafts
* Racecraft Intake and Exhaust Manifolds
* Precision 6262 .63AR Turbo
* Bosch 044 fuel pumps
* Bosch 1680cc fuel injectors
* E85 Fuel
* Clutchmasters FX700 Twin Disc Clutch
* Quaife 6 Speed
* DSS Stage 5 Axles
* M+H 25"x8.7"Tires on Exospeed 13" Wheels
- We ran the 10.41 pass on stock camshafts at 43 psi boost
- The 683 whp dyno was with Schrick camshafts at 39 psi
- Here's a dyno chart, one run is 18-22 psi and the 671 run is 38 psi
(http://www.braunstadt.com/lugtronic/images/Todd437WG.jpg)
Did't 4th cyl suffer from leaner? Intake manifold looks too simplified for so high flow.
Do you mean cylinder #1 (by the timing belt?)
Regardless, no, there are no problems with any cylinders.
The E85 is working very well. This car has been too lean, overboosted (46+ psi on 43.5 psi MAP sensor), and still has no damage.
Newest engine picture:
(http://www.braunstadt.com/lugtronic/images/Toddor2.jpg)
(http://www.braunstadt.com/lugtronic/images/Todd3sng.jpg)
Quote from: lugnuts on November 29, 2009, 09:59:03 PM
Do you mean cylinder #1 (by the timing belt?)
Regardless, no, there are no problems with any cylinders.
The E85 is working very well. This car has been too lean, overboosted (46+ psi on 43.5 psi MAP sensor), and still has no damage.
Sorry - 1st cylinder, yes!
What is launching strategy?
Crankshaft and bearings are OE?
evil Golf :)
thanks! ;D
The Quaife gearset has a pretty tall first gear. Right now, I'm basically running full boost down the racetrack.
The boost is 10-13 psi on the launch, and grows to 31 psi, the tires spin all of first gear.
On a "good" launch, the rpm will "catch" and drop from 8000+ down to 6500 rpm in the middle of the gear, and then it will be a good 60" time (1.6 to 1.7). The car makes ~36 psi in second gear, and spins a bit at the bottom of 2nd. Then it dead hooks 3rd and 4th as it hits 39+ psi boost. The 10.41 run was with a 1.77 60' time. this is all unorthodox, with a lower numerically first gear, we can do low 1.6 60' times all day long.
Now that I have founf out about the "Completely Undocumented Boost by Gear and RPM 1.1.47FW and MT", I am going to try staging the boost some more.
Quote from: lugnuts on November 30, 2009, 02:18:07 AM
thanks! ;D
Now that I have founf out about the "Completely Undocumented Boost by Gear and RPM 1.1.47FW and MT", I am going to try staging the boost some more.
In two days i'll write tutorial for that on wiki and forum.
Excellent, thanks.
I just had a setback, I found out that my test car has a broken Speed Gear in the transaxle, so i cannot use fromt (driven) wheel speed.
So, I'm back to making the rear wheel speed work. I'm just trying to knock a couple tenths off of this car before the end of the year.
Of course you never use a driven wheel unless you absolutely must like 4wd.
I've had great success with both types using Autronic SM4 ecu.
It is also nice to have both driven, and un-driven speed sensors for datalog analysis, to assist in driver training.
But yes, un-driven wheel is the best way overall to control a drag race car.
There's a few more options that I would like to implement, as soon at the VEMSTune becomes remotely usable.
Quote
What is launching strategy?
Crankshaft and bearings are OE?
- Yes, crank and bearings are 100% OEM.
- We have problems with the flywheel bolts at 8,500 RPM however
Are they not 12.9´s?
Right now we're using an ARP bolt that is 220,000 psi tensile strength.
But there will be other measures taken when the engine is apart next time.
http://www.vems.hu/wiki/index.php?page=MembersPage%2FDamirMuha%2FBoostDependingGear
small tutorial