 Can poorly adjusted valves cause higher engine temps? |
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| moneysmarts |
 May 11 2015, 12:01 PM
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#1
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Member  Group: Members Posts: 164 Joined: 2-March 04 From: Central Massachusetts Member No.: 1,745 Region Association: None 
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Just adjusted the valves on my '74 2.0 FI
Now oil temp gauge is creeping toward the red zone. I'm never certain how much drag is correct on the feeler gauge, but I think i'm pretty close to .006 intake and .008exhaust. It's not the first time I've done it, but I never feel like I'm 100% dead nuts when I finish. Could a little deviation result in a hotter engine? Thanks |
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| Ferg |
May 11 2015, 12:11 PM
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#2
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914 Guru Group: Members Posts: 5,948 Joined: 8-January 03 From: Boulder CO Member No.: 116 Region Association: None
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How was it running temp wise before?
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| moneysmarts |
May 11 2015, 12:14 PM
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#3
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Member Group: Members Posts: 164 Joined: 2-March 04 From: Central Massachusetts Member No.: 1,745 Region Association: None
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QUOTE(Ferg @ May 11 2015, 10:11 AM)  How was it running temp wise before? Cooler. But I only have the dash gauge, so I can quantify the degrees. Middle of the gauge, now getting close to the red. |
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| Ferg |
May 11 2015, 12:21 PM
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#4
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914 Guru Group: Members Posts: 5,948 Joined: 8-January 03 From: Boulder CO Member No.: 116 Region Association: None
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I'd start with the basics... timing, dwell ect.
Anything getting close to the red on a "small red zone" gauge is to hot. IIRC needle at the begining of the "m" on the TEMP is 220ish, if it's on the other side of the M getting close to the "P" that's 240-50 ish. So yes, to warm. If it has been rock steady before, retrace your steps after confirming timing ect. It's been my experience that nearly all stock 2.0s will run 230 on highway or summer, without a cooler. Buy a lazer temp gauge, it's your best friend unless you have been living in blissful ignorance of how hot the car really runs. Then those lazer pointers are evil and will make u spend money on oil coolers. |
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| moneysmarts |
May 11 2015, 12:37 PM
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#5
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Member Group: Members Posts: 164 Joined: 2-March 04 From: Central Massachusetts Member No.: 1,745 Region Association: None
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For what it's worth, this is kind of where it's running after 30-40 minutes.
I have an MSD ignition, so timing is pretty simple. I will recheck it. Presuming it's ok, are you suggesting that valves would not be suspected and I should look elsewhere?  |
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| Ferg |
May 11 2015, 12:50 PM
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#6
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914 Guru Group: Members Posts: 5,948 Joined: 8-January 03 From: Boulder CO Member No.: 116 Region Association: None
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I was thinking the small center stack gauge, so my numbers likely not correct for that combo gauge. All the more reason to buy a cheap IR thermometer
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| euro911 |
May 11 2015, 02:19 PM
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#7
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Retired & living the dream. God help me if I wake up! Group: Members Posts: 8,849 Joined: 2-December 06 From: So.Cal. & No.AZ (USA) Member No.: 7,300 Region Association: Southern California
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If your valves are adjusted too tight, they don't seat long enough to dissipate the heat. Make sure you're providing enough clearance - and adjusting them stone-cold.
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| r_towle |
May 11 2015, 04:06 PM
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#8
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Custom Member Group: Members Posts: 24,574 Joined: 9-January 03 From: Taxachusetts Member No.: 124 Region Association: North East States
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Yes, do it again
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