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Posted

I'm in need of a swirl pot / header tank for my '62 Series 2. The original ones mount to the head directly and replace the thermostat housing / water outlet neck and incorporate the radiator cap I think.

 

If anybody has some pictures of one, or better yet, some drawings I can make one if necessary.

Posted
Does this help ??? Still looking for a drawing..

 

Or page 27 in the " Lotus Seven & The Independents " has a photo of a totally different setup.

Posted (edited)

S1Steve asked?

Does this help ??? Still looking for a drawing..

That is the general area. But I think that is a filler neck / thermostat housing.

 

A swirl pot typically has spiral internal baffeling to allow any entrained air to separate as it passes through the container. It acts as a coolant / air separator. So if you have any coolant hot spots where boiling may occur, the swirl pot will separate out any entrained gas bubbles. If I have to fab my own it would be a lot easier to know what the inside of an original one looks like.

 

S1Steve added:

Or page 27 in the " Lotus Seven & The Independents " has a photo of a totally different setup.

 

Thanks, I'll try to check it out.

 

Since I don't have a copy, check out the pics that I have so far (below). Is it like the ones in the bottom three pics below?

 

I've never seen the interior of one of these to know for sure if there is internal baffeling. The 1st two are non swirl pot. More of a remote fill neck so that you don't have to remove the nose to get to the radiator mounted fill cap. The bottom three are the type of swirl pot I'm looking for:

http://www.lotus7register.co.uk/images/l7s2pix/s2coseng.jpg

http://farm5.static.flickr.com/4077/4899418409_5c16ccb8e4_b.jpg

http://www.lotus7register.co.uk/images/l7s2pix/Thirty-7.001.jpg

http://farm5.static.flickr.com/4140/4899454591_38520be85e_b.jpg

Edited by escondidoron

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