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351 cleveland building pressure in radiator 

 

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 Post subject: 351 cleveland building pressure in radiator
Posted: Sat Sep 25, 2010 2:18 pm 
Tyre Shredder
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Age: 31

Posts: 320

Joined: 23rd Apr 2008

Ride: ED, EB11, 351 XF

Location: christchurch
New Zealand

have just put my 351 into my xf . Motor has been recond a while ago then was left sitting for a while in doors. i fully did all the gaskets befor i put the motor in. Headgaskets , sump ect. New 3 inch alloy readiator and water pump. new hoses ect.
Now the problem is it seems to be building pressure in the cooling system. every time i take the rad cap off there is a release of pressure.
Any ideas????
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 Post subject: Re: 351 cleveland building pressure in radiator
Posted: Sun Sep 26, 2010 12:40 am 
EFI Guru
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Age: 58

Posts: 4351

Joined: 5th Nov 2004

Gallery: 28 images

Ride: 351 Vogue,XH 5.0,'17 5.0 Stang

Location: Perth
WA, Australia

How much pressure? Is the engine dead cold when this happens? Is the cap new? what pressure is it? what thermostat is in it?
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 Post subject: Re: 351 cleveland building pressure in radiator
Posted: Sun Sep 26, 2010 8:34 pm 
Getting Side Ways
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Age: 56

Posts: 6467

Joined: 18th Dec 2006

Ride: 93 ED sedan

Power: 161 rwkw

Location: Rockhampton
QLD, Australia

Were the head gaskets fitted correctly???....was cooling system bled properly???....is there a 2.5mm hole drilled in the t'stat??? How is the impeller to timing cover place clearance??? How is the impeller to pump housing clearance

 

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