|
Sponsored Links (Register now to hide all advertisements) |
|
|
Thread Tools | Display Modes |
12-26-2016, 05:36 PM | #1 |
Member
Join Date: Jul 2014
Posts: 43
|
Water out the overflow???
I run my 30 Roadster all day at 30 mph never loose a drop of coolant. Runner at 50 for 30 minutes down a gallon!!
compression-- 70 to 80 psi. each cyl 5.5 Snyder head Radiator--seems to pass drain test-- empty in 4-5 seconds the radiator tubes I can see look clean Head gasket? Plugged radiator? |
12-26-2016, 05:49 PM | #2 |
Senior Member
Join Date: Jun 2014
Location: Melbourne, Australia
Posts: 7,496
|
Re: Water out the overflow???
Try doing a search - this has come up lots of times.
http://www.fordbarn.com/forum/showth...flow&showall=1 for example.
__________________
I'm part of the only ever generation with an analogue childhood and a digital adulthood. |
Sponsored Links (Register now to hide all advertisements) |
|
12-26-2016, 05:51 PM | #3 |
BANNED
Join Date: May 2010
Location: Bucks County, PA
Posts: 11,454
|
Re: Water out the overflow???
Yea it flows quick from the tubes that are unblocked. The fill and drop test is a myth...
Personally i use my infrared camera that mounts to my iphone to see what exactly is going on with the radiator.. the temp gun or hand method would be the next best method, short of pulling it. Are you overfilling it?? A very common issue... it should only be filled to the level of the baffle thats in the bottom of the top tank.. Do some searches tons of reading available on the barn Last edited by Mitch//pa; 12-26-2016 at 05:58 PM. |
12-26-2016, 08:17 PM | #4 |
Senior Member
|
Re: Water out the overflow???
Your radiator is plugged. All the Other stuff won't fix your problem.
|
12-26-2016, 10:09 PM | #5 |
Senior Member
Join Date: May 2010
Location: Quincy, CA.
Posts: 1,708
|
Re: Water out the overflow???
I would like to make a suggesting; the faster you drive the faster the water pump pumps water into the radiator, the water builds up faster than the water can drain through the tubes and return to the block, this can cause cavitation and heating; try drilling a 3/16" hole in each impeller to slow down the volume being pumped.
I have made this modification when rebuilding my water pumps for many years and have had no problems with water running over the overflow. When I say "water", I usually put one gallon of coolant in my system as a rust inhibitor, only fill the radiator to the bottom of the baffle. Ron |
12-26-2016, 10:11 PM | #6 |
Senior Member
Join Date: May 2010
Location: Concord CA
Posts: 637
|
Re: Water out the overflow???
Sponsored Links (Register now to hide all advertisements)
Like Mitch says, the flow test is a myth. |
12-27-2016, 07:40 AM | #7 | |
Senior Member
Join Date: May 2010
Location: Mpls, MN
Posts: 27,582
|
Re: Water out the overflow???
Quote:
|
|
12-27-2016, 08:12 AM | #8 | |
BANNED
Join Date: May 2010
Location: Bucks County, PA
Posts: 11,454
|
Re: Water out the overflow???
Quote:
|
|
12-27-2016, 09:28 AM | #9 |
Senior Member
Join Date: May 2010
Location: Hebron, CT
Posts: 432
|
Re: Water out the overflow???
Are you using a thermostat? If you are make certain it hasn't moved up the hose toward the radiator. If it has it could be flowing water directly into the the overflow tube. When you go 50mph the flow increases and is exiting the through the overflow. The fix would be to locate the thermostat above the gooseneck and install an extra hose clamp to prevent it from moving upward.
|
12-27-2016, 10:04 AM | #10 |
Senior Member
Join Date: Sep 2010
Location: michigan
Posts: 1,126
|
Re: Water out the overflow???
Trust me jack knows what he is talking about !!
I have heard that the Finns on some rebuilt water pump build up more water flow than the radaitor can handle at higher speeds pushes the water out of the over flow tube just a thought but if I was a betting man I would bet Jack is right best of luck to you. |
12-27-2016, 10:17 AM | #11 |
Senior Member
|
Re: Water out the overflow???
Keep this in mind. The water pump gets it's water from the bottom of the radiator. That's all it can pump. A free flowing radiator can handle much more water than the pump could possibly pump. 36 gal per minute is a good flowing radiator. Most of our radiators are plugged up to some extent. My rule of thumb is: if you can run 45 mph for 10 solid minutes, you have a good radiator.
|
12-27-2016, 10:21 AM | #12 |
Senior Member
Join Date: May 2010
Location: Mpls, MN
Posts: 27,582
|
Re: Water out the overflow???
This is another good reason to install a 3.27 ring and pinion, or an overdrive if you want to drive 45 and faster. It will slow the water pump.
|
12-27-2016, 01:45 PM | #13 |
Member
Join Date: May 2010
Location: Sacramento, CA
Posts: 74
|
Re: Water out the overflow???
|
|
|
Sponsored Links (Register now to hide all advertisements) |
|