Head temps, HOT, difference between 1 and 3 |
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Head temps, HOT, difference between 1 and 3 |
yarin |
Apr 15 2007, 07:46 AM
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#1
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'14-X'in FOOL Group: Members Posts: 988 Joined: 13-May 03 From: Guttenberg, NJ Member No.: 693 Region Association: North East States |
I've got two of the VDO spark plug type head temp sensors. One on cyl 1 and one on cyl 3. I know that cyl 3 is the hottest, but i'm seeing differences of ballpark 30-40 degrees between the two. From the drivers seat I can't accurately read the gauges, so i'm going to move the gauges somewhere else and see how hot the temps get.
On the track the #1 cyl gets to about 365F. The #3 gets hot, unconfortably hot for me. I thinking around 400. I tried retarding timing 5-6 degrees total, didn't seem to make a difference. A little history: the PO was doing a hill climb and literally melted the right side of the engine (cyl 3 side). He had the head rebuilt and slapped it back together. Before I converted to megasquirt the carbs had all this metal crap (aluminum maybe) welded to the inside of the butterfly valves. I'm thinking this head really had a melt down. #3 always run hotter than #1, even at idle. I'm going check reading on my stock injection head temp sensor and see what Megasquirt says. It was bugging the shit out of me at the track. I kept looking over instead of concentrating on the course. Thanks Attached image(s) |
41ghost |
Apr 15 2007, 11:31 AM
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#2
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Member Group: Members Posts: 235 Joined: 13-July 04 From: noblesville,in. Member No.: 2,345 |
when i say the temp fluxuates up and down to a point that is not believably i mean it in seconds 1 or 2 not a mile or a min.
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yarin |
Apr 15 2007, 11:45 AM
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#3
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'14-X'in FOOL Group: Members Posts: 988 Joined: 13-May 03 From: Guttenberg, NJ Member No.: 693 Region Association: North East States |
when i say the temp fluxuates up and down to a point that is not believably i mean it in seconds 1 or 2 not a mile or a min. you probably have a loose connection somewhere. try a different sensor or a different gauge. my temps move, but over the course of a minute. the needle does not bounce around over 1-2 secs. Jake - thanks for your reply. I'll pay close attention to the actual reading from #3 under the plug and see what temps i'm running. I know its hot, probably too hot. |
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