monster626 Posted November 5, 2003 Share Posted November 5, 2003 i bought the 270/260 cam and have had a good pull from 2500 up the problem i have is my temp now sits at 195 while driving and around 210-220 at idle. I have taken the thermastate out all together because it overheats with it in. has anyone ever used this cam...........if so what was you experience and what settings are you using. Any help would be great. right now i have the cam alittle advanced could this be the problem? Quote Link to comment Share on other sites More sharing options...
SleeperZ Posted November 5, 2003 Share Posted November 5, 2003 I've used the cam, never had any overheating issues with it. How is your ignition timing? Is your radiator getting old? Are you running a good fuel mixture (not too lean at idle and cruising)? I did run the cam dialed in, not advanced or retarded.... Quote Link to comment Share on other sites More sharing options...
Lockjaw Posted November 5, 2003 Share Posted November 5, 2003 I would double check to make sure you haven't missed a tooth on the cam gear. You should also check to make sure the engine is really at TDC before doing that, and lining up the notch on the balancer is not the way to do it, because your balancer could have slipped. If you have a retarded cam, that can cause overheating, but installation of a cam alone should not cause an overheating problem. What other mods have you done to the car? Quote Link to comment Share on other sites More sharing options...
monster626 Posted November 6, 2003 Author Share Posted November 6, 2003 i have the hks ajustable cam sprocket i know that it is dead center when i started but i have advanced the cam alittle more. i think that is the problem....i'm going to go back to stock timing and see if thats the problem. Quote Link to comment Share on other sites More sharing options...
yo2001 Posted November 6, 2003 Share Posted November 6, 2003 Or a headgasket problem. Quote Link to comment Share on other sites More sharing options...
monster626 Posted November 6, 2003 Author Share Posted November 6, 2003 the headgasket is also the hks 2mm and i have the arp studs torqued at 85 so that should not be an issue. i haven't had a chance to check the cam timing yet but i will do that this afternoon. Quote Link to comment Share on other sites More sharing options...
zxtman Posted November 6, 2003 Share Posted November 6, 2003 How did you setup the hks sprocket? I've seen them and the dowel hole doesn't line up with the OE sprocket to give you a base line to start with. If your not going to run a thermostat, you should at least run a restrictor otherwise coolant flows through the radiator too quickly and isn't cooled as well. Quote Link to comment Share on other sites More sharing options...
Lockjaw Posted November 7, 2003 Share Posted November 7, 2003 You should run a thermostat anyway, your final cold start circuit shuts off at about 170 degrees. My car normally always runs better numbers with operating temp coolant then with cold, and my dyno pulls also showed that. Quote Link to comment Share on other sites More sharing options...
Tim240z Posted November 7, 2003 Share Posted November 7, 2003 If your not going to run a thermostat, you should at least run a restrictor otherwise coolant flows through the radiator too quickly and isn't cooled as well. That is actually a fallacy. The reason to restrict the flow is is to build pressure in the system. Without the restriction, pressure would not build and the boiling point of the coolant would be lowered to the point that hot spots or steam pockets would be created around the cylinders. Tim Quote Link to comment Share on other sites More sharing options...
zxtman Posted November 7, 2003 Share Posted November 7, 2003 Tim you are correct: the greater the pressure, the greater the boiling point. Quote Link to comment Share on other sites More sharing options...
monster626 Posted November 8, 2003 Author Share Posted November 8, 2003 when i got the hks sproket i looked at it and your right they don't line up the same at all. Basically what i did is turn the sproket to a position that gave me room to move it left and right. laid them on top of one another and transfored the timing marks so that i then had a starting position. As for the termostate it is in at this time. the reason that i had been over heating was i advanced the cam to far. the car runs good at stock position but i think i would like alittle more pull so i'm going to advance it some and have fun. thanks for your help Quote Link to comment Share on other sites More sharing options...
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