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Contour Electric Fan Install |
Post Reply | Page <1234 14> |
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Greyhounds_AMX
AMC Addicted Joined: Nov/14/2009 Location: Kansas City Status: Offline Points: 1268 |
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Ollie, This question comes up alot on EFI forums as well. Engine temp is the variable we're trying to control, and the best indicator of engine temp is the temperature of the water exiting the block. The temp of the water out of the radiator won't tell us if the engine is too hot or too cold, as the fluid temp has been changed by the radiator, and the amount of change would vary with vehicle speed, fan speed, etc. So current cars use the water temp exiting the block. The aftermarket stuff does as well though - here's a clip from the instructions for the aftermarket controller that farna has has good success with: |
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1968 AMX 390 w/T5
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Jmerican
AMC Addicted Joined: Mar/29/2016 Location: Seattle, Wa Status: Offline Points: 585 |
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304 - you have some bizarre if not dangerous advice on electricity. I’m not studying this to hard, but you’ve got references to voltage drop on ac power tool cable mixed in with circuit boards, mixed in with 40amps on a 22gauge (dc app, with regular junk automotive wire. You say fuses can go anywhere in a circuit. You’re short circuited.
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Jmerican
AMC Addicted Joined: Mar/29/2016 Location: Seattle, Wa Status: Offline Points: 585 |
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you and that engineering toolbox are missing many critical factors, and both are borderline dangerous.
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billd
Moderator Group Forum Administrator Joined: Jun/27/2007 Location: Iowa Status: Offline Points: 30894 |
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We are talking 13.8 volt DC, some distance (more than a couple of feet to be sure).
Up to 4 feet, 12 gauge will only do 35 at 13.8 volts which is typical with a running engine. 10 gauge for up to 50 amps. Recommended for a 40 amp load at 4 feet of wire would be 12 gauge, 10 much better to stay close to the 13.8 volts (keep withing about a 2% drop. Edited by billd - Jun/23/2019 at 4:12pm |
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billd
Moderator Group Forum Administrator Joined: Jun/27/2007 Location: Iowa Status: Offline Points: 30894 |
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Don't worry - only the originals and factual simple basic information will go in. In other words - the original post, maybe one or two others that relate directly (and that likely won't include mine up to this point! ) |
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6t8amxetc
AMC Addicted Joined: Mar/11/2008 Location: Washington State Status: Offline Points: 631 |
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Thanks...LOL
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purple72Gremlin
AMC Addicted Charter Member Joined: Jul/01/2007 Location: Illinois Status: Offline Points: 16611 |
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73hornut
AMC Addicted Joined: Jul/03/2007 Location: Southern Oregon Status: Offline Points: 3130 |
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I run 3 60-80a relays and a Saab 2spd thermal switch, for low speed, the power goes through the first relay then through the first single spd motor, then passively through the second relay through the second motor, to ground, this gives 6volt to each motor in series, so run half speed. For high speed, the second and third relays go to ground, grounding both motors giving full 12volts to each motor, in parallel. There is no resister. i have a relay that grounds the low side of the thermal switch, when A/C is turned on. Fans run of battery power on 50amp buss fuse, and switching power comes off the starter relay and a 40amp buss fuse. All of my wire is 10g. Well over 2 years now with this setup, not a single issue. My new contour fans for the Javelin, are 2spd motors, so wiring will differ slightly. Edited by 73hornut - Jun/23/2019 at 6:38pm |
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71 Javelin
74 Gremlin 79 Spirit AMX Rogue Valley Rumblers Like Us on FB https://www.facebook.com/groups/1602825606650796 |
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73hornut
AMC Addicted Joined: Jul/03/2007 Location: Southern Oregon Status: Offline Points: 3130 |
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71 Javelin
74 Gremlin 79 Spirit AMX Rogue Valley Rumblers Like Us on FB https://www.facebook.com/groups/1602825606650796 |
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billd
Moderator Group Forum Administrator Joined: Jun/27/2007 Location: Iowa Status: Offline Points: 30894 |
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Curiosity and to lay out the basics for those watching -
what issues were you having with your cooling (obviously there were issues if you say it improved it - it wasn't working to remove the heat) and - is the engine stock or "built beyond" stock? And what else did you change - radiator?, other changes?/ I ask because if it improved that means you were having trouble with it not cooling - not removing the BTUs the engine was producing. |
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