OliverSedlacek Posted November 19, 2013 Share Posted November 19, 2013 Well I finally did it and bought an alloy cylinder head for my XFlow. To my surprise I find that the water passageway to the heater takeoff is blocked off in the casting. Hmm, sub zero temperatures forecast. Link to comment Share on other sites More sharing options...
7 wonders of the world Posted November 20, 2013 Share Posted November 20, 2013 These are performance based heads therefore the last thing you want is hot water passing inside the inlet manifold to warm the incoming air. Which one did you get Burtons or Ric Wood? Sure it will be possible to arrange a feed from either side or rear of the head or from the water outlet depending what stat arrangement you are running. Link to comment Share on other sites More sharing options...
OliverSedlacek Posted November 20, 2013 Author Share Posted November 20, 2013 They all use the same casting,so I went with CNCHead. As the water doesn't goes straight out of the top of a sidedraught manifold, I reckon the intake heating effect is negligible. With a standard stat, where should I take the hot water from? The rear of the head sure would be handy. Link to comment Share on other sites More sharing options...
eric Posted November 24, 2013 Share Posted November 24, 2013 Hello I have an alloy head on a spare engine Can I connect the water pipe from the water pump to the intake manifold as I did on the standard engine ? Thanks very much for your answer Link to comment Share on other sites More sharing options...
OliverSedlacek Posted November 24, 2013 Author Share Posted November 24, 2013 Eric, no you can't as the casting is blocked off internally. Link to comment Share on other sites More sharing options...
eric Posted November 25, 2013 Share Posted November 25, 2013 Do you think we can drill out 2 holes in the head Many thanks Eric Link to comment Share on other sites More sharing options...
andy couchman Posted November 25, 2013 Share Posted November 25, 2013 Be interested to know what difference the new head makes Oliver (not just in power - with it being lighter too). A tempting upgrade... Andy Link to comment Share on other sites More sharing options...
eric Posted November 25, 2013 Share Posted November 25, 2013 something like 6 Kg lighter but nothing concerning the performance Link to comment Share on other sites More sharing options...
Leadership Team Mcalvert Posted November 26, 2013 Leadership Team Share Posted November 26, 2013 Oliver - I've just checked back to early photos of my Alloy head and confirmed that I originally had a heater running off of it. I can only assume that the head design has changed, as I believe I had one of the first in the country? Michael Link to comment Share on other sites More sharing options...
OliverSedlacek Posted November 26, 2013 Author Share Posted November 26, 2013 I've just spent an hour or so on the mill removing the stumps of the casting sprues from the front of the head for even more weight saving 😬. It might be hard to justify the effort, but they annoy me. The new and old head wont be comparable for power because I'm looking to go fuel injection with a 'No compromise' inlet manifold. The usual twin Weber manifold introduce three shortish radius bends and does god knows what in diameter. I'm hoping to have just one bend of 640mm radius and a steady taper from throttle body to the valve. My biggest concern is how to change the spacing between the throttle bodies. 100 BHP/litre ? Link to comment Share on other sites More sharing options...
elie boone Posted November 27, 2013 Share Posted November 27, 2013 You could use 4 seperate one's here, this is from a Dutch tuner but i am sure you can find them in the Uk Edited by - elie boone on 27 Nov 2013 08:43:33 Link to comment Share on other sites More sharing options...
7 wonders of the world Posted November 27, 2013 Share Posted November 27, 2013 I saw a manifold made by Bogg Bros for a alloy X/flow head, inclined to maintain port angle with flanges to suit Jenvey TB's, can't recall if it was made for DCOE IDA or IDF fitting - would be the ones with c-c nearest to port spacing on the head. Naturally it would require a new bonnet at the exit hole would be much higher. Link to comment Share on other sites More sharing options...
OliverSedlacek Posted November 27, 2013 Author Share Posted November 27, 2013 Hmm, four singles would sure solve the spacing headaches. 690 euros plus VAT as against £150 off Ebay for GSXR1000 throttle bodies including injectors. Link to comment Share on other sites More sharing options...
7 wonders of the world Posted November 27, 2013 Share Posted November 27, 2013 Worth checking the spacings against the DCOE etc options, I'd be more concerned about getting the right size TB. If your serious about getting the max out of your investment then the bike TB's are going to be on the small side. Link to comment Share on other sites More sharing options...
7 wonders of the world Posted November 27, 2013 Share Posted November 27, 2013 worth a look here TB's for sale Link to comment Share on other sites More sharing options...
OliverSedlacek Posted November 28, 2013 Author Share Posted November 28, 2013 The GSXR1000 TBs are 42mm on the engine side, plenty big enough for me. Link to comment Share on other sites More sharing options...
7 wonders of the world Posted November 28, 2013 Share Posted November 28, 2013 If you looking to unleash the potential off your head investment I would look to get the inlet correct - 42's are going to restrict things which would be a shame. Link to comment Share on other sites More sharing options...
OliverSedlacek Posted November 29, 2013 Author Share Posted November 29, 2013 Well the ports in the head are effectively only 30mm, so I really don't think 42mm is a restriction. I'll post up a photo in a bit to show what I mean. Link to comment Share on other sites More sharing options...
OliverSedlacek Posted December 1, 2013 Author Share Posted December 1, 2013 I don't know if you can see this photo but it shows the intended inlet manifold profile. Link to comment Share on other sites More sharing options...
OliverSedlacek Posted August 15, 2014 Author Share Posted August 15, 2014 The plan to extend the throttle spindles didn't work out, so I've had to make some new ones. The front one looks like this Link to comment Share on other sites More sharing options...
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