so,
Is it just me or does every Magnum engine seem to totally rock when the engine is cold.
Like when the temperature gauge reads exactly "C" or a teeny tiny bit past "C".
[ Engine block would be between 100F and 150F at this point. It has not even had the
chance to get to regulated temp of 180F ( i have the 180* t-stat mod installed ) ]
But after it warms up to operating temp, it seems that a little bit of torque has been
lost somewhere.
Details:
When I left my work @ 8pm this evening the outdoor air temp was 61F and humidity was 70%,
I discovered IT WOULD CHIRP ON THE 1-2 SHIFT -AND- THE 2-3 SHIFT.
But after driving around for 5 minutes it wouldn't do it as much. And after 20 minutes
it hardly will do it. By this point the engine temp was right at 180 to 190F. This is
apparently the optimum range according to this website and other Dakota websites.
And the outdoor temp did change that much. After I drove to my home about 20 minutes
away, it was still about 64F and 74% humidity.
So whats happen here?
Are the pistons and valves doing a better job when the engine is cold?
Is the PCM adjusting spark advance and fuel ratio that much?
I mean it like a have total different truck when its cold. By 'seat of the pants'
measurements, it feels like about 25 FT/LB of more torque when its cold.
Details on the truck are in my sig. But I do have a home-brew 3" diameter cool air
intake from right in behind the grill area to the stock airhat which has a K&N Filter in
it.
No other mods. Engine was 169,000 miles and feels like it brand spanking new.
thanks
Dan K.
1992 Dakota Club Cab LE with A/C, Cruise, PS, PB, PW, PL, 3.55 rear, 5.2L V8 and a 46RH.
Current Mods: Cool-air intake, 180* T-stat, relocated IAT, DynoMax Super Turbo exhaust, Autolite Platinum plugs, 8mm wires
http://static.flickr.com/42/84856795_c18903d10f.jpg
Plans: Mopar Performance PCM (ECU), March pullies, upgrade to 3.91 rear gear, replace viscous fan with electric fan
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