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04-16-2016, 12:59 PM | #1 |
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Location: Arizona
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should I worry about carbon buildup
So, after getting my '30 running and having it overheat quickly, I have rodded and flushed the radiator. I took the head off to clean the water jackets.
Now i'm wondering if I should be worried about the carbon on the valves and pistons. The car ran great when I had it running. The overheating was my only reason for taking it apart. If I just put it back together and drive the hell out of it, will I have anything to worry about? Thanks all, -Shawn Sorry the pic is not great: |
04-16-2016, 01:06 PM | #2 |
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Re: should I worry about carbon buildup
I would be the last person to suggest you " drive the hell " out of any 85 year old car. If you do, this won't be the last time it gets torn apart! Wayne
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04-16-2016, 01:28 PM | #3 | |
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Re: should I worry about carbon buildup
Quote:
All the hard work is done (taking head off). So, just take a tool and gently shave the carbon all loose and vacuum it away as scraped off ! A sharp 'putty' knife will get most off, then use a light abrasive pad to finish cleaning all gasket surfaces. Install with coppercoat on both sides of gasket and you will be good to go. OR, don't worry about the dirt/carbon....EXCEPT that it doesn't get under your head gasket when install. MMO use will help remove carbon also, as will a number of useful products when used properly. BTW...all your good work of loosening scale/rust from within block will go for naught, if this stuff makes its way to the radiator ..plugging it up. Take measures to prevent this. Last edited by hardtimes; 04-17-2016 at 02:37 PM. Reason: .......... |
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04-16-2016, 01:39 PM | #4 |
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Join Date: Nov 2013
Location: Arizona
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Re: should I worry about carbon buildup
I'll give that a go. I was just most worried about loosening debris or getting dust/dirt in the cylinders. I will give the MMO a shot as well.
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04-16-2016, 01:53 PM | #5 |
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Re: should I worry about carbon buildup
I always have a vacuum cleaner running while I scrape gasket surfaces so the junk doesn't fall into the coolant chamber.
Now would also be a good time to stick a long thin blow gun down each coolant hole and blow the crud out of there, especially in the rear where it settles. I made such a blow gun from soft copper tubing, and again I have the vacuum sucking on nearby holes while blowing into the coolant hole. |
04-16-2016, 02:08 PM | #6 |
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Re: should I worry about carbon buildup
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04-16-2016, 10:28 PM | #7 |
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Re: should I worry about carbon buildup
It will think positive ! Best of luck to you
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04-17-2016, 02:49 AM | #8 |
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Re: should I worry about carbon buildup
De-carboning valves and Pistons is actually part of the job when pulling a cylinder head. The job time manuals (chiltons) has that listed as a supplement to the overall job.
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04-17-2016, 04:30 AM | #9 | |
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Re: should I worry about carbon buildup
Quote:
This is from the Dykes manual Model A section;
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04-17-2016, 08:13 AM | #10 |
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Location: NW Ohio
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Re: should I worry about carbon buildup
Are you running an in-hose thermostat? I had that overheating for nearly a year and then realized that the thermostat was in the hose backwards. Dumb... But that eliminated the problem. I also a little off the impeller blades of the water pump. It was pumping too fast. Also drilled a 1/8th inch hole in the thermostat for relief.. Don't have the problem anymore.
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04-17-2016, 11:38 AM | #11 |
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Re: should I worry about carbon buildup
Don't forget to clean out the head bolt holes while you've got it apart.
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04-17-2016, 01:41 PM | #12 |
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Re: should I worry about carbon buildup
Lapping the valves and setting tappets also while the head is off could be helpful.
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04-18-2016, 09:30 AM | #13 |
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Re: should I worry about carbon buildup
Even if you're SO CAREFUL about cleanliness, when doing a head gasket, after a few miles, you should do a BACKFLUSH.
Once had a '59 Studebaker Lark that would overheat above 55 MPH. AH HA, head gasket scrapings in the top of radiator tubes! QUICK backflush & it was perfect!! Bill W.
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"THE ASSISTANT GURU OF STUFF" Last edited by BILL WILLIAMSON; 04-18-2016 at 01:29 PM. |
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