 Head temps, HOT, difference between 1 and 3 |
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| yarin |
 Apr 15 2007, 07:46 AM
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#21
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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) 
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Posts in this topic
yarin Head temps, HOT Apr 15 2007, 07:46 AM
41ghost pesonally i do not think that the vdo works yery w... Apr 15 2007, 07:59 AM Jake Raby The stock cooling system has imbalance issues betw... Apr 15 2007, 10:41 AM BMXerror Well, is anyone going to ask it? I know this will ... Apr 15 2007, 11:06 AM
Dave_Darling Is there a factory spec for "don't get o... Apr 15 2007, 09:29 PM 41ghost when i say the temp fluxuates up and down to a poi... Apr 15 2007, 11:31 AM yarin
when i say the temp fluxuates up and down to a po... Apr 15 2007, 11:45 AM bperry Also, aren't there 2 different VDO sensor/gaug... Apr 15 2007, 11:53 AM Jake Raby The following temps are based on the readings I ha... Apr 15 2007, 12:11 PM 41ghost very usefull info , thanks again jake. Apr 15 2007, 12:18 PM computers4kids
The following temps are based on the readings I h... Apr 15 2007, 12:41 PM Brando This question might seem counter-productive, but a... Apr 15 2007, 12:52 PM Jake Raby The stock system is not bad, WHEN IT IS SET UP PRO... Apr 15 2007, 06:50 PM 41ghost does it help for cooling to change your 914 engine... Apr 15 2007, 06:55 PM Bleyseng It helps to remove the rain tray by 10-20F on the ... Apr 15 2007, 07:44 PM Twystd1 Then there is the question of accuracy of the VDO ... Apr 15 2007, 08:17 PM yarin
Exactly... both visual resolution and accuracy. ... Apr 15 2007, 10:32 PM bd1308 i have one....works great! Apr 15 2007, 10:54 PM Jake Raby The VDO is not the best instrument for total accur... Apr 16 2007, 06:22 AM Joe Ricard Yarin, you can always back up your VDO gauges with... Apr 16 2007, 06:51 AM yarin
Yarin, you can always back up your VDO gauges wit... Apr 16 2007, 10:40 AM yarin I got my gauge. Slight problem....
The spark plug... May 10 2007, 05:49 PM toon1
I got my gauge. Slight problem....
The spark plu... May 10 2007, 05:59 PM ptravnic Yarin - As for being able to see both gauges at th... May 10 2007, 08:57 PM yarin
Yarin - As for being able to see both gauges at t... May 10 2007, 09:46 PM yarin I emailed tech support, got this response:
... May 11 2007, 10:10 AM  |
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