Dave Bailey
|
| posted on 5/2/12 at 08:51 PM |
|
|
Engine Configuration
For those of you experts out there....
I have problems setting up my ST170 engine... Emissions are high....
The engine has been dry sumped and I have removed the crankcase vent system and blanked off the hole with a plate.... The cambox vent oes directly to
the oil catch tank....
Is this a good idea or do you think I should vent the crankcase.....
Dave B
|
|
|
|
|
Ben_Copeland
|
| posted on 5/2/12 at 08:54 PM |
|
|
Original injection? Carbs? Throttle Bodies? Lambda sensor installed? Wide band Lambda?
Ben
Locost Map on Google Maps
Z20LET Astra Turbo, into a Haynes
Roadster
Enter Your Details Here
http://www.facebook.com/EquinoxProducts for all your bodywork needs!
|
|
|
big_wasa
|
| posted on 5/2/12 at 08:57 PM |
|
|
loads of zetecs run with just the one breather and they breath fine.
[Edited on 5/2/12 by big_wasa]
|
|
|
Dave Bailey
|
| posted on 5/2/12 at 09:55 PM |
|
|
The engine is as follows....
1. Jenvey throttle bodies. 48's (a bit big but they were free!) 60mm trumpets.... Airbox with single input.
2. 4-1 Exhaust with a sports Cat
3. S60 DTA ECU
4. Innovate wide band Lambda sensor
5. Crank Sensor
6. Variable inlet Cam
7. Cam Sensor
8. Air temp Sensor
9. TPS
10. 3 bar fuel reg
thanks
Dave B
|
|
|
rdodger
|
| posted on 5/2/12 at 10:36 PM |
|
|
How high?
Is the cat new, did it get properly hot?
Has the ECU been mapped properly on a rolling road?
|
|
|
Dave Bailey
|
| posted on 5/2/12 at 11:00 PM |
|
|
Pretty bad....
CO = 0.09%
HC = 851ppm
CO2 Level = 9.7%
O2 Level = 7.66%
Lambda = 1.47
Yes the Cat is new.....
I have enabled the close loop control today after DTA gave me a few setting updates... But it still miss fires a bit...
I will get it back on the Analyser when the weather gets better....
Dave B...
|
|
|
Dusty
|
| posted on 6/2/12 at 01:14 AM |
|
|
I have a 50,000 mile ST zetec and it breathes pretty heavy. Much more than the prior silvertop and blacktop I had in before. Another ST zetec user
also said his engine was a heavy breather. I have both block and cam cover vented to a catch tank. Even so the car disgraced itself at the last
rolling road session with an oil spill, blown out of the catch tank at high revs full load. So I would vent the block and fit a well designed oil
trapping catchtank.
|
|
|
