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View Full Version : 2.5L LM fuel/spark questions!


turbovanmanČ
08-25-2011, 01:23 PM
I need to make up a stock 2.5 Cal for a customers 87 Shelby. LM is socketed, so is Rob's turbonator close to stock or do I need to adjust the fuel and spark curves. This is BONE STOCK except for a blow thru conversion, NO IC.
tryingbe
08-25-2011, 02:41 PM
In the 12.5V LM cal, there is a 2.5L file, use it. Then copy 89 2.5L's AdvanceFromRPM2 to it. You should be good to go.
turbovanmanČ
08-25-2011, 02:52 PM
Thanks. Forgot to mention, its an auto.
roachjuice
08-25-2011, 03:06 PM
I need to make up a stock 2.5 Cal for a customers 87 Shelby. LM is socketed, so is Rob's turbonator close to stock or do I need to adjust the fuel and spark curves. This is BONE STOCK except for a blow thru conversion, NO IC. burn it to a chip and find out. when it knocks like crazy and you dont understand why come back and post up results

---------- Post added at 02:06 PM ---------- Previous post was at 02:02 PM ----------

oh and the cold idle is too rich that it almost dies too. i wouldnt call that minor tweeking.
turbovanmanČ
08-25-2011, 03:09 PM
burn it to a chip and find out. when it knocks like crazy and you dont understand why come back and post up results

---------- Post added at 02:06 PM ---------- Previous post was at 02:02 PM ----------

oh and the cold idle is too rich that it almost dies too. i wouldnt call that minor tweeking.

I'll let you know how it runs, :D

Didn't Rob fix that?
roachjuice
08-25-2011, 05:07 PM
no. mine still ran rich at idle.
Force Fed Mopar
08-26-2011, 10:46 AM
Need to know what head is on it Simon, you know this. I didn't think any log engines came with a swirl head though.
roachjuice
08-26-2011, 11:41 AM
86-87. Yep. Swirl head.
turbovanmanČ
08-26-2011, 11:57 AM
Need to know what head is on it Simon, you know this. I didn't think any log engines came with a swirl head though.

All 87+ came with swirl, stock, :D, maybe even 86 but too busy to go look. Have to make one today so I'll post up what happens.
tryingbe
08-26-2011, 12:08 PM
no. mine still ran rich at idle.

Mine idles just fine.

How rich are you idling?
roachjuice
08-26-2011, 12:44 PM
cold idle was like 10.0 lol. warm idle was fine.
Force Fed Mopar
08-26-2011, 12:45 PM
Hmm yeah I forgot that I guess lol. Although my 87 carbed Charger has a 287 bathtub...