Ali 5 port
Turbo Mini Forums

Hi does anyone have any experience of the aluminium 5 port cylinder head available through webcon etc
http://www.webcon.co.uk/shop/shopexd.asp?id=37

I've got Ali 7 port from webcon, quality seems Ok, but exhaust ports don't match up the gasket very well. Had to cut gasket and grind exhaust manifold to match. I was also wondering if the Ali 5 port would be good for forced induction. They should allow you to run a higher CR than normal. They are considerably lighter 5kg v 14kg. Still expensive for a bare head though, £1000+ with suitable valves and porting.

The Webcon site doesnt give much info, I think the valve guides are spaced slightly wider than normal to allow larger valves 37x30 without using offset guides. Also give 23cc to start, so 28cc should be within reach.

Edited by alaskanow0 on 12th Mar, 2011.

Class C 3rd Place Avon 2011 14.18 @101mph

It is a Pierce Manifolds head.

http://www.piercemanifolds.com/product_p/99003.843.htm

I have one sitting in my pile of parts. No real experience of it yet. Needs a little fettling before I can fit it.

There are some flow figures on Marcel's site.

http://www.starchak.ca/tech/8-port.htm

Saul Bellow - "A great deal of intelligence can be invested in ignorance when the need for illusion is deep."
Stephen Hawking - "The greatest enemy of knowledge is not ignorance, it is the illusion of knowledge."

i would never deal with webcon again

Be better buying direct off Pierce. Its considerably cheaper that way. Less mark up and they send them as antique.