please help! its a strange question

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Jan 11, 2010 | 02:11 PM

griff2

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please help! its a strange question

hi all

im new here
i dont own a jag myself as i cant efford one :-( lol

but i have a kit car im building,on it im using a jagxj40 water exspantion bottle

but wot are the top 2 pipes for?
???both return ??? or is one some kind of overflow????

as you can see below ive plumped it in as one(both as a return)

Name: 100_1147.jpg
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Name: 100_1147.jpg
Views: 64
Size: 101.5 KB

is this correct??????????? or am i missing a overflow bottle or something?

please please please help

griff

Jan 11, 2010 | 05:55 PM

joycesjag

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Joined: Feb 2009

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From: Sunny South Carolina

griff you may want to post this in the xj40 section of this forum. You will get better results.

Jan 11, 2010 | 07:57 PM

Thermo

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Joined: May 2008

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From: Great Mills, MD

griff, odds are, one is a low point suction port, the other is a high point discharge. Personally, I would look at the internals of the bottle and see where the ports go. If one is high, one is low, then I would block the high port and only use the low port. Using it as you are with a high and a low port, you are going to air bind the coolant system if there is any leakage and you will end up hurting the motor.

Jan 13, 2010 | 05:44 AM

Translator

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From: Brittany France

Griff the exterior pipe (right as you look at this photo) goes to the radiator and the interior pipe would normally go to the thermostat housing, thus completing the hot water circuit.

There is no overflow tank on the later XJ40 tank you have here, it is a closed pressurised system.

BTW what is the kit you are building?