diy 4 branch manifold new pics 23/6 pm

[jawathemutt]

ive been given a four branch manifold from a k series 1.8(thanks geoff),I'm going to chop it up and make it fit the cvh,illpost up some pics of progress if anybodys interested

[rodney]

fwd setup? can get the adapter plates on ebay,.

[jawathemutt]

the pile of bits

chop chop

welded some tube to the primarys ,should make things easier later

clean the welds up a little not to bothered about how they look at this stage

the cvh exhaust gasket heldup checking spacing of the ports ,its close but not close enough


soi marked out a manifold plate and broke out the pillar drill

more later.........

[composimmonite]

Have you calculated the optimum lengths for the pipes otherwise there will be no advantage, and even a negative, over a standard cast iron item. Also you will need to open the exhaust aperture to the same as the port size / shape on the head - square to smaller round will definatley be a negative as it will restrict flow.
I have no idea how you do the calculations but am sure there will be a web site somewhere to provide the info. Quick search find this to start with -
www.ojzengineering.co.uk/page.php?page=104

Paul H

[jawathemutt]

interesting ready compo thanks dude i have done some research and ended up with the conclusion that long primarys will give the power low down (its a auto driven by my wife who has ms so no screaming banshee type engines just a bit more of the line is her preference)the standard cast manifold is a pos 4inch long primarys 2 feet long secondarys so anything should be a improvement.
picssssss of todays effort
the primarys tacked in toplace to check clearence on the starter and alty


the head is shagged so makes a great heat sink, went a bit chubby with the welds but i need a bit of steel to shape the ports with
stuck the gasket on and wafted a bit of red paint on to see which areas need a tickle with the file

had enough for today so wafted some high temp paint to stop it going rusty till i get a bit of free time