Chuck, to answer your VSS question from the other day I have taken this extract from the EEC bible.
"For a manual transmission MAF Mustang, the VSS is used to maintain an 1100 idle when coasting to a stop until you drop below ~8 mph. I’ve known a few people who converted their speed density cars to MAF that had stalling problems when pushing in and holding the clutch at speed until the VSS sensor was hooked up."
As far as the t-stat is concerned, The stock is actually 192*. That being said there is a huge debate on what to run in these engines for many reasons.
The EEC does not care if the engine is at 195*.
It retards the timing 2 degrees upon reaching 190*.
Running cooler than stock is both good and bad. The good is obvious. The bad is two fold. First, if your temp does not get above 160*, you risk the potential for condensed water to not evaporate from the oil which will reduce lubrication effectiveness and premature engine wear. Also, the EEC will force itself out of closed loop scheduling when below 140*.
With that in mind, I run the 180* stat. Why? I keep my timing at 10 degrees, I stay in closed loop, and I am still able to purge my oil of any moisture.
"For a manual transmission MAF Mustang, the VSS is used to maintain an 1100 idle when coasting to a stop until you drop below ~8 mph. I’ve known a few people who converted their speed density cars to MAF that had stalling problems when pushing in and holding the clutch at speed until the VSS sensor was hooked up."
As far as the t-stat is concerned, The stock is actually 192*. That being said there is a huge debate on what to run in these engines for many reasons.
The EEC does not care if the engine is at 195*.
It retards the timing 2 degrees upon reaching 190*.
Running cooler than stock is both good and bad. The good is obvious. The bad is two fold. First, if your temp does not get above 160*, you risk the potential for condensed water to not evaporate from the oil which will reduce lubrication effectiveness and premature engine wear. Also, the EEC will force itself out of closed loop scheduling when below 140*.
With that in mind, I run the 180* stat. Why? I keep my timing at 10 degrees, I stay in closed loop, and I am still able to purge my oil of any moisture.
'77 351w- Explorer EFI, 4R70W, 4-link, lockers, 4.56, 35" MT/Rs with a severe rock addiction.
mokin:
Roads? Where we're going, we don't need roads.
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mokin:Roads? Where we're going, we don't need roads.