Smokedawg's Overheating and Driveability Issues

NO SLO PK · 05-25-2001, 03:37 PM

Simple questions:

Could there be combustion leak into the cooling system through the head gaskets? A leak down test should show this.

Is your radiator cap in good condition, and rated somewhere around 13-14 psi?

Can we rule out the possibility that the motor is new, tight, and has a lot of friction? (new motors run hotter)

Finally, I like jimberg lots but gotta disagree about the 160 thermostat. I'm running a 160 right now, and it's definitely cooler than the 180 that was in there earlier. I disagree that a 160 causes the coolant to flow through too quickly, for when I used a Moroso flow restrictor (which enables constant hi-volume flow), the engine ran COLD. Just my experience.

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Russ L
'91 LX
Procharger, 3 row intercooler, extrude honed Cobra intake, Mac full Length Headers, 30# inj., 73mm C&L, 75mm tb, E303 cam, 289 rods, ported E7 heads, MSD, T-Rex w/255 lph Walbro, 5 lug conversion, Cobra R wheels, 3.27 gears and Moser Axles.

[This message has been edited by NO SLO PK (edited 05-25-2001).]

05-25-2001, 03:37 PM	#1
NO SLO PK Registered Member Join Date: Mar 1999 Location: Arcadia, CA, USA Posts: 731	Simple questions: Could there be combustion leak into the cooling system through the head gaskets? A leak down test should show this. Is your radiator cap in good condition, and rated somewhere around 13-14 psi? Can we rule out the possibility that the motor is new, tight, and has a lot of friction? (new motors run hotter) Finally, I like jimberg lots but gotta disagree about the 160 thermostat. I'm running a 160 right now, and it's definitely cooler than the 180 that was in there earlier. I disagree that a 160 causes the coolant to flow through too quickly, for when I used a Moroso flow restrictor (which enables constant hi-volume flow), the engine ran COLD. Just my experience. ------------------ Russ L '91 LX Procharger, 3 row intercooler, extrude honed Cobra intake, Mac full Length Headers, 30# inj., 73mm C&L, 75mm tb, E303 cam, 289 rods, ported E7 heads, MSD, T-Rex w/255 lph Walbro, 5 lug conversion, Cobra R wheels, 3.27 gears and Moser Axles. [This message has been edited by NO SLO PK (edited 05-25-2001).]