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05-31-2015, 04:57 AM | #21 |
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Re: '35 Large Top Tank Radiator
Don, great information. Thank you. You and DavidG are amazing when it comes to the amount of knowledge you both have on these early Ford V-8's. Is that chart possibly somewhere in the '35 - '36 Book? I looked quickly under radiators a couple days ago and did not see that info there.
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05-31-2015, 05:29 AM | #22 |
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Re: '35 Large Top Tank Radiator
John, This detailed information is not in The 35-36 Book. It was discovered years after the book was originally printed. This information and a lot more could eventually be included in a supplement to the book or a total rewrite of the book(ugh).
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05-31-2015, 08:42 AM | #23 |
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Re: '35 Large Top Tank Radiator
Id buy that book without question.I also looked through the '35-'36 book and found nothing.
In researching this car and the '35 info that's out there I find im always hungry to find more. |
05-31-2015, 09:12 AM | #24 |
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Re: '35 Large Top Tank Radiator
The stop leak is part of the pump installation instructions and may have prevented your problem. G.M.
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05-31-2015, 11:52 AM | #25 |
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Re: '35 Large Top Tank Radiator
I realize it was part of the install instructions. Im unsure as to how that would have prevented the tank from oil canning. Don't get me wrong, I in no way am putting blame to the pump builder.
I was more concerned if others had experienced this same sort of thing and the ideas they may have had to change or correct it. Id buy these pumps again for another engine without thought. |
05-31-2015, 12:41 PM | #26 |
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Re: '35 Large Top Tank Radiator
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05-31-2015, 01:13 PM | #27 |
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Re: '35 Large Top Tank Radiator
Ok, gotcha! What I did was purchased a Block tester from NAPA,Balkamp product.
I used it about a dozen times and the results were negative for exhaust gases. In using it i had to make a special rubber washer so I could block the rad. cap catch notches in the fill hole. Im certain I had good tests. |
06-01-2015, 07:04 AM | #28 | |
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Re: '35 Large Top Tank Radiator
Quote:
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06-01-2015, 08:15 PM | #29 |
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Re: '35 Large Top Tank Radiator
I am surprised at how many people run pressure in thier stock radiators. I have a 34 and a 35 and was always afraid to cause a leak. Both of mine run cool anyway with the blocks super cleaned when I built them and the correct timing. Lots of raving on here about Skips pumps etc but I just don't see the need.
Of course, I don't live in the desert either........ |
06-05-2015, 04:16 PM | #30 |
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Re: '35 Large Top Tank Radiator
Update to the radiator situation.
I took the 3lbs. pressure valve off and put a pint size over flow tank on with a breather as G.M. suggested. With the engine at operating temp I went for a spin.Id say I was going around 65 m.p.h.. While going I could watch the top of the tank oil canning about a quarter inch,someimes as much as a half inch. Then all of a sudden the tank sucked down about an inch and a half an never flexed back up. Almost home and watching it all the while still oil canning about a quarter inch up and down. Its weird, ud think it would draw air from the overflow tube and not suck down the tank top down. Up to this change id been running the 3 lbs valve with some flex.Maybe 3/8".Especially with the engine off and cooled down it would suck down 1/2" Im curious as to any ideas or experiances from others.Id like to solve this situation. |
06-05-2015, 05:06 PM | #31 |
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Re: '35 Large Top Tank Radiator
Are you sure your overflow tube is open (not clogged)? It sounds like you don't have any vent in the system at all.
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06-05-2015, 05:40 PM | #32 |
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Re: '35 Large Top Tank Radiator
Positively open! Water drained on its own to the over flow tank.
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06-05-2015, 05:47 PM | #33 |
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Re: '35 Large Top Tank Radiator
Rob, it sounds like the overflow tube is blocked by the pressure cap, not releasing until the system is over-pressurized. This is a normal setup for a pressurized system without an overflow tank. With an overflow tank, however, the tube has the pressure valve like you have, but is separated away from the fill tube and cap.
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06-05-2015, 05:53 PM | #34 |
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Re: '35 Large Top Tank Radiator
It doesn't have a pressure cap. Over flow tube is separate and always open on the '35 radiator.Only way its closed off is if I put the 3lbs check valve on.
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06-05-2015, 05:53 PM | #35 |
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Re: '35 Large Top Tank Radiator
In '35, Ford used several differing radiator designs. You have one of the large top tank versions. Where is the end of the overflow tube located in your particular radiator? Under the filler cap or up in the uppermost centre of the tank?
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06-05-2015, 05:56 PM | #36 |
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Re: '35 Large Top Tank Radiator
Upper most dimple on the tank top Brian.
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06-05-2015, 06:07 PM | #37 |
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Re: '35 Large Top Tank Radiator
Cool! Right, that is the ideal location. Seems to me that if radiator was pressurising, the tank would want to expand outwards, from your description, it sounds as though vacuum is sucking it inwards. I cannot comprehend this. As you understand, the outlet /overflow is open to atmospheric pressure, even if it is running into catchcan as I suggested you fit, and which you have done without success. Therefore the system can 'breathe'. Can you try testing again, but leave the radiator cap loose? , ie, not screwed down tight. See if it behaves itself like that.
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06-05-2015, 06:14 PM | #38 |
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Re: '35 Large Top Tank Radiator
Ill give it a try.
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06-05-2015, 06:41 PM | #39 |
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Re: '35 Large Top Tank Radiator
On my 35 the overflow is under the cap (not pressurized) and when ever I go around a right turn, you can see a trail of water that runs out the overflow. If I go on about 25-30 mile ride I have to add about 1/2 gal of fluid and the car does not overheat, and the plugs are not wet or sooty, where does it go I have a large tank on mine. I notice under the cap there is a deflector that the water can only come in or go out in one direction, looks like a 3/4 bowl.
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06-05-2015, 07:57 PM | #40 |
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Re: '35 Large Top Tank Radiator
I am surprised nobody has mentioned a bad coil causing the warm engine starting problems. Sure gave me fits until I had Skip rebuild it.
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