Snowy Posted January 18, 2015 Share Posted January 18, 2015 Can anyone who has converted an 1800 inlet manifold to fit the 18E or 20SEH/20NE please post a picture of how they modified theirs to fit? I can't decide if I should weld it or make a sandwhich plate? Thanks Quote Link to comment Share on other sites More sharing options...
rutts Posted January 18, 2015 Share Posted January 18, 2015 1.8e should be same. Quote Link to comment Share on other sites More sharing options...
Snowy Posted January 18, 2015 Author Share Posted January 18, 2015 (edited) http://m.ebay.co.uk/itm/151310897891?nav=SEARCH The one I bought online isn't. Has the same ports as the 2l head. The head does have 18E stamped into it. Thanks Edited January 18, 2015 by Snowy Quote Link to comment Share on other sites More sharing options...
Snowy Posted January 18, 2015 Author Share Posted January 18, 2015 Right, a bit of research and I have aan 18SE head, which are stamped 18E. But it seems they make for a better road engine anyway... http://www.astra-mk2.com/forum/archive/index.php/t-37832.html 18E http://www.darrenh.co.uk/car_various/18E_head03.jpg 18SE http://www.darrenh.co.uk/car_various/18SE_head03.jpg Quote Link to comment Share on other sites More sharing options...
dynamytedan Posted January 26, 2015 Share Posted January 26, 2015 (edited) FYI Original 18s manifold Modified 18s manifold to fit 20SEH or the like note where ally is built up for extra long stud to fix to head in right place and for alternator bracket . ports on later injection heads are higher up , the mk1 astra gte head is the same shape as the 18s ports and such so plops right on . the cam in the mk1 gte head is much much better than any other 1800 or 20i 8v ....its a good upgrade without much hassle . from the look of it all the bolt holes needed changing to get the ports to line up . the top ones just cut off and re drilled and the lowers cut off and welded back on lower down . Edited January 26, 2015 by dynamytedan 1 Quote Link to comment Share on other sites More sharing options...
Snowy Posted January 26, 2015 Author Share Posted January 26, 2015 FYI Original 18s manifold Modified 18s manifold to fit 20SEH or the like note where ally is built up for extra long stud to fix to head in right place and for alternator bracket . ports on later injection heads are higher up , the mk1 astra gte head is the same shape as the 18s ports and such so plops right on . the cam in the mk1 gte head is much much better than any other 1800 or 20i 8v ....its a good upgrade without much hassle . from the look of it all the bolt holes needed changing to get the ports to line up . the top ones just cut off and re drilled and the lowers cut off and welded back on lower down . Thanks. I've gone a slightly different route. Once done I shall post up some pictures. I've gone for the 18 SE head. It is very similar to the 20NE/SE/SEH head. Thanks Quote Link to comment Share on other sites More sharing options...
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