|
|
|
|
| Author |
|
|
Registered
|
MegaSquirt-II ignition table wanted
Hi,
I am ready to do some tuning on a MegaSquirt-II system running a 2180ccm flat four Turbo VW Type 1 motor. I'd like to get some pointers for ignition timing. Here is what I came up with so far. Does that look reasonable? I don't know what compression the puppy has. We plan 91 octane gas and not more than 10 PSI of boost. What do you guys think? Do I have too much boost retard, too much advance under decel....  Cheers, Ingo
__________________
1974 Targa 3.6, 2001 C4 (sold), 2019 GT3RS, 2000 ML430 I repair/rebuild Bosch CDI Boxes and Porsche Motronic DMEs Porsche "Hammer" or Porsche PST2, PIWIS III - I can help!! How about a NoBadDays DualChip for 964 or '95 993 |
||
06-23-2006, 08:04 AM
|
|
|
3 restos WIP = psycho
Join Date: Feb 2005
Location: North of Exit 17
Posts: 7,665
|
__________________
- 1965 911 - 1969 911S - 1980 911SC Targa - 1979 930 |
||
|
06-23-2006, 12:45 PM
|
|
|
Registered
|
yeah I did but have not received any answers.... Seems to be kind of slow over there. I also posted to the VW forum shoptalk. Same there. Not much activity.....
__________________
1974 Targa 3.6, 2001 C4 (sold), 2019 GT3RS, 2000 ML430 I repair/rebuild Bosch CDI Boxes and Porsche Motronic DMEs Porsche "Hammer" or Porsche PST2, PIWIS III - I can help!! How about a NoBadDays DualChip for 964 or '95 993 |
||
|
06-23-2006, 01:41 PM
|
|
|
Registered
Join Date: Apr 2003
Location: Las Cruces, NM
Posts: 2,459
|
If you go over 10psi according to your map, it looks like you might not have enough advance and will start over heating your exhaust. When i was setting the standard timing table on a turbo 944, i went to 24 deg advance at it's full boost of 14psi (just shy of 200Kpa). I know that air cooled's are different but you may want to either stick it on a dyno and see what it likes, or continue looking for someone with a similar setup.
EDIT: BTW, some of the guys who've converted there SC's to a little boost are running stock configuration with there distributors. This mean under boost they are at the normal 24deg advance for full load.
__________________
2007 Mazda 3 hatch 1972 Porsche 914 roller with plenty of holes to fix 
Last edited by 1fastredsc; 06-29-2006 at 08:37 AM.. |
||
|
06-29-2006, 08:35 AM
|
|
|
Registered
|
Hm, interesting comments. I also thought that I was retarding timing too much from seeing other boosted tables. I have worked on the iginition table a litte bit more and here is what I came up with. It has more advance at full boost though it's not 24 degrees yet. How does this look?
 Cheers, Ingo
__________________
1974 Targa 3.6, 2001 C4 (sold), 2019 GT3RS, 2000 ML430 I repair/rebuild Bosch CDI Boxes and Porsche Motronic DMEs Porsche "Hammer" or Porsche PST2, PIWIS III - I can help!! How about a NoBadDays DualChip for 964 or '95 993 |
||
|
06-29-2006, 08:48 AM
|
|
|
Registered
Join Date: May 2002
Location: Up North
Posts: 1,449
|
Ingo, I'm close to firing mine up so please keep us posted with your table.
__________________
87 930 K27HFS/B&B/Twin-Plug... Megasquirted 
|
||
|
06-29-2006, 09:24 AM
|
|
|
|
Registered
|
We just have to put in a new starter and then it's time to fire it up again. The old starter was on its way out whenever the engine gets warm. I'll get back to the board once we have some more data.
Cheers, ingo
__________________
1974 Targa 3.6, 2001 C4 (sold), 2019 GT3RS, 2000 ML430 I repair/rebuild Bosch CDI Boxes and Porsche Motronic DMEs Porsche "Hammer" or Porsche PST2, PIWIS III - I can help!! How about a NoBadDays DualChip for 964 or '95 993 |
||
|
06-29-2006, 09:34 AM
|
|
1974 Porsche 911 Targa 3.6
